Attachment 135562 Details for Bug 103800 – Same kernel, with preemption enabled.

Same kernel, with preemption enabled.

dmesgoutput2.txt (text/plain), 181.59 KB, created by Rafael Antognolli on 2017-11-17 21:30:37 UTC

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Description:

Filename:

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Creator: Rafael Antognolli

Created: 2017-11-17 21:30:37 UTC

Size: 181.59 KB

patch

obsolete

>[    0.000000] Linux version 4.14.0cnl_staging+ (rantogno@rantogno-mobl4.amr.corp.intel.com) (gcc version 7.2.1 20170915 (Red Hat 7.2.1-2) (GCC)) #20 SMP PREEMPT Fri Nov 17 12:02:49 PST 2017
>[    0.000000] Command line: BOOT_IMAGE=/vmlinuz-4.14.0cnl_staging+ root=/dev/mapper/fedora-root ro rd.lvm.lv=fedora/root rd.lvm.lv=fedora/swap rhgb quiet LANG=en_US.UTF-8
>[    0.000000] x86/mpx: Disabling MPX since SMEP not present
>[    0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
>[    0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
>[    0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
>[    0.000000] x86/fpu: Supporting XSAVE feature 0x008: 'MPX bounds registers'
>[    0.000000] x86/fpu: Supporting XSAVE feature 0x010: 'MPX CSR'
>[    0.000000] x86/fpu: Supporting XSAVE feature 0x020: 'AVX-512 opmask'
>[    0.000000] x86/fpu: Supporting XSAVE feature 0x040: 'AVX-512 Hi256'
>[    0.000000] x86/fpu: Supporting XSAVE feature 0x080: 'AVX-512 ZMM_Hi256'
>[    0.000000] x86/fpu: Supporting XSAVE feature 0x200: 'Protection Keys User registers'
>[    0.000000] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
>[    0.000000] x86/fpu: xstate_offset[3]:  832, xstate_sizes[3]:   64
>[    0.000000] x86/fpu: xstate_offset[4]:  896, xstate_sizes[4]:   64
>[    0.000000] x86/fpu: xstate_offset[5]:  960, xstate_sizes[5]:   64
>[    0.000000] x86/fpu: xstate_offset[6]: 1024, xstate_sizes[6]:  512
>[    0.000000] x86/fpu: xstate_offset[7]: 1536, xstate_sizes[7]: 1024
>[    0.000000] x86/fpu: xstate_offset[9]: 2560, xstate_sizes[9]:    8
>[    0.000000] x86/fpu: Enabled xstate features 0x2ff, context size is 2568 bytes, using 'compacted' format.
>[    0.000000] e820: BIOS-provided physical RAM map:
>[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009efff] usable
>[    0.000000] BIOS-e820: [mem 0x000000000009f000-0x00000000000fffff] reserved
>[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000008341efff] usable
>[    0.000000] BIOS-e820: [mem 0x000000008341f000-0x0000000083ad1fff] reserved
>[    0.000000] BIOS-e820: [mem 0x0000000083ad2000-0x0000000083c7dfff] ACPI NVS
>[    0.000000] BIOS-e820: [mem 0x0000000083c7e000-0x0000000083d0efff] ACPI data
>[    0.000000] BIOS-e820: [mem 0x0000000083d0f000-0x0000000083d0ffff] usable
>[    0.000000] BIOS-e820: [mem 0x0000000083d10000-0x000000008ebfffff] reserved
>[    0.000000] BIOS-e820: [mem 0x00000000fe010000-0x00000000fe010fff] reserved
>[    0.000000] BIOS-e820: [mem 0x00000000ff600000-0x00000000ffffffff] reserved
>[    0.000000] BIOS-e820: [mem 0x0000000100000000-0x00000002713fffff] usable
>[    0.000000] NX (Execute Disable) protection: active
>[    0.000000] e820: update [mem 0x7f2bb018-0x7f2cb057] usable ==> usable
>[    0.000000] e820: update [mem 0x7f2bb018-0x7f2cb057] usable ==> usable
>[    0.000000] extended physical RAM map:
>[    0.000000] reserve setup_data: [mem 0x0000000000000000-0x000000000009efff] usable
>[    0.000000] reserve setup_data: [mem 0x000000000009f000-0x00000000000fffff] reserved
>[    0.000000] reserve setup_data: [mem 0x0000000000100000-0x000000007f2bb017] usable
>[    0.000000] reserve setup_data: [mem 0x000000007f2bb018-0x000000007f2cb057] usable
>[    0.000000] reserve setup_data: [mem 0x000000007f2cb058-0x000000008341efff] usable
>[    0.000000] reserve setup_data: [mem 0x000000008341f000-0x0000000083ad1fff] reserved
>[    0.000000] reserve setup_data: [mem 0x0000000083ad2000-0x0000000083c7dfff] ACPI NVS
>[    0.000000] reserve setup_data: [mem 0x0000000083c7e000-0x0000000083d0efff] ACPI data
>[    0.000000] reserve setup_data: [mem 0x0000000083d0f000-0x0000000083d0ffff] usable
>[    0.000000] reserve setup_data: [mem 0x0000000083d10000-0x000000008ebfffff] reserved
>[    0.000000] reserve setup_data: [mem 0x00000000fe010000-0x00000000fe010fff] reserved
>[    0.000000] reserve setup_data: [mem 0x00000000ff600000-0x00000000ffffffff] reserved
>[    0.000000] reserve setup_data: [mem 0x0000000100000000-0x00000002713fffff] usable
>[    0.000000] efi: EFI v2.60 by Intel
>[    0.000000] efi:  SMBIOS=0x836cd000  ACPI=0x83d0e000  ACPI 2.0=0x83d0e014  ESRT=0x8024aa18 
>[    0.000000] random: fast init done
>[    0.000000] SMBIOS 3.0 present.
>[    0.000000] DMI: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[    0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
>[    0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
>[    0.000000] e820: last_pfn = 0x271400 max_arch_pfn = 0x400000000
>[    0.000000] MTRR default type: write-back
>[    0.000000] MTRR fixed ranges enabled:
>[    0.000000]   00000-9FFFF write-back
>[    0.000000]   A0000-BFFFF uncachable
>[    0.000000]   C0000-FFFFF write-protect
>[    0.000000] MTRR variable ranges enabled:
>[    0.000000]   0 base 00C0000000 mask 7FC0000000 uncachable
>[    0.000000]   1 base 00A0000000 mask 7FE0000000 uncachable
>[    0.000000]   2 base 0090000000 mask 7FF0000000 write-combining
>[    0.000000]   3 base 008C000000 mask 7FFC000000 uncachable
>[    0.000000]   4 base 008B000000 mask 7FFF000000 uncachable
>[    0.000000]   5 base 008A800000 mask 7FFF800000 uncachable
>[    0.000000]   6 disabled
>[    0.000000]   7 disabled
>[    0.000000]   8 disabled
>[    0.000000]   9 disabled
>[    0.000000] x86/PAT: Configuration [0-7]: WB  WC  UC- UC  WB  WP  UC- WT  
>[    0.000000] e820: last_pfn = 0x83d10 max_arch_pfn = 0x400000000
>[    0.000000] esrt: Reserving ESRT space from 0x000000008024aa18 to 0x000000008024aa78.
>[    0.000000] Scanning 1 areas for low memory corruption
>[    0.000000] Base memory trampoline at [ffff880000096000] 96000 size 24576
>[    0.000000] Using GB pages for direct mapping
>[    0.000000] BRK [0x02837000, 0x02837fff] PGTABLE
>[    0.000000] BRK [0x02838000, 0x02838fff] PGTABLE
>[    0.000000] BRK [0x02839000, 0x02839fff] PGTABLE
>[    0.000000] BRK [0x0283a000, 0x0283afff] PGTABLE
>[    0.000000] BRK [0x0283b000, 0x0283bfff] PGTABLE
>[    0.000000] Secure boot disabled
>[    0.000000] RAMDISK: [mem 0x3ed8f000-0x3fffdfff]
>[    0.000000] ACPI: Early table checksum verification disabled
>[    0.000000] ACPI: RSDP 0x0000000083D0E014 000024 (v02 INTEL )
>[    0.000000] ACPI: XSDT 0x0000000083CA1188 0000FC (v01 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: FACP 0x0000000083D01000 000114 (v06 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: DSDT 0x0000000083CB3000 04A333 (v02 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: FACS 0x0000000083B2A000 000040
>[    0.000000] ACPI: SSDT 0x0000000083D0B000 0017CB (v02 CpuRef CpuSsdt  00003000 INTL 20160422)
>[    0.000000] ACPI: SSDT 0x0000000083D07000 003212 (v02 SaSsdt SaSsdt   00003000 INTL 20160422)
>[    0.000000] ACPI: SSDT 0x0000000083D06000 0004C8 (v02 Intel_ Tpm2Tabl 00001000 INTL 20160422)
>[    0.000000] ACPI: SSDT 0x0000000083D05000 000046 (v02 MeSsdt MeSsdt   00003000 INTL 20160422)
>[    0.000000] ACPI: TPM2 0x0000000083D04000 000034 (v04                 00000000      00000000)
>[    0.000000] ACPI: UEFI 0x0000000083B3C000 000042 (v01 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: SSDT 0x0000000083D03000 0005B6 (v02 Intel  PerfTune 00001000 INTL 20160422)
>[    0.000000] ACPI: ECDT 0x0000000083D02000 000069 (v01 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: HPET 0x0000000083D00000 000038 (v01 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: APIC 0x0000000083CFF000 00012C (v03 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: MCFG 0x0000000083CFE000 00003C (v01 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: SSDT 0x0000000083CAF000 003640 (v02 INTEL  CnlY_Rvp 00001000 INTL 20160422)
>[    0.000000] ACPI: SSDT 0x0000000083CAD000 0011B1 (v02 INTEL  Ther_Rvp 00001000 INTL 20160422)
>[    0.000000] ACPI: SSDT 0x0000000083CAB000 0013F0 (v02 INTEL  xh_cnud4 00000000 INTL 20160422)
>[    0.000000] ACPI: BOOT 0x0000000083CAA000 000028 (v01 INTEL  TIANO    00000002 MSFT 01000013)
>[    0.000000] ACPI: SSDT 0x0000000083CA8000 00198A (v02 INTEL  UsbCTabl 00001000 INTL 20160422)
>[    0.000000] ACPI: LPIT 0x0000000083CA7000 000094 (v01 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: WSMT 0x0000000083CA6000 000028 (v01 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: SSDT 0x0000000083CA3000 002815 (v02 INTEL  PtidDevc 00001000 INTL 20160422)
>[    0.000000] ACPI: SSDT 0x0000000083CA2000 000FBB (v02 INTEL  TbtTypeC 00000000 INTL 20160422)
>[    0.000000] ACPI: DBGP 0x0000000083D0D000 000034 (v01 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: DBG2 0x0000000083CA0000 000054 (v00 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: NHLT 0x0000000083C9E000 001783 (v00 INTEL  CNL      00000002      01000013)
>[    0.000000] ACPI: FPDT 0x0000000083C9D000 000044 (v01 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: ASF! 0x0000000083C9C000 0000A0 (v32 INTEL   HCG     00000001 TFSM 000F4240)
>[    0.000000] ACPI: BGRT 0x0000000083C9B000 000038 (v01 INTEL  CNL-ULT  20170001 INTL 20160422)
>[    0.000000] ACPI: Local APIC address 0xfee00000
>[    0.000000] Zone ranges:
>[    0.000000]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
>[    0.000000]   DMA32    [mem 0x0000000001000000-0x00000000ffffffff]
>[    0.000000]   Normal   [mem 0x0000000100000000-0x00000002713fffff]
>[    0.000000] Movable zone start for each node
>[    0.000000] Early memory node ranges
>[    0.000000]   node   0: [mem 0x0000000000001000-0x000000000009efff]
>[    0.000000]   node   0: [mem 0x0000000000100000-0x000000008341efff]
>[    0.000000]   node   0: [mem 0x0000000083d0f000-0x0000000083d0ffff]
>[    0.000000]   node   0: [mem 0x0000000100000000-0x00000002713fffff]
>[    0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x00000002713fffff]
>[    0.000000] On node 0 totalpages: 2049982
>[    0.000000]   DMA zone: 64 pages used for memmap
>[    0.000000]   DMA zone: 24 pages reserved
>[    0.000000]   DMA zone: 3998 pages, LIFO batch:0
>[    0.000000]   DMA32 zone: 8337 pages used for memmap
>[    0.000000]   DMA32 zone: 533536 pages, LIFO batch:31
>[    0.000000]   Normal zone: 23632 pages used for memmap
>[    0.000000]   Normal zone: 1512448 pages, LIFO batch:31
>[    0.000000] Reserving Intel graphics memory at 0x000000008b000000-0x000000008ebfffff
>[    0.000000] ACPI: PM-Timer IO Port: 0x1808
>[    0.000000] ACPI: Local APIC address 0xfee00000
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x04] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x05] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x06] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x07] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x08] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x09] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x0a] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x0b] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x0c] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x0d] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x0e] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x0f] high edge lint[0x1])
>[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x10] high edge lint[0x1])
>[    0.000000] IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-119
>[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
>[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
>[    0.000000] ACPI: IRQ0 used by override.
>[    0.000000] ACPI: IRQ9 used by override.
>[    0.000000] Using ACPI (MADT) for SMP configuration information
>[    0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
>[    0.000000] smpboot: Allowing 4 CPUs, 0 hotplug CPUs
>[    0.000000] e820: [mem 0x8ec00000-0xfe00ffff] available for PCI devices
>[    0.000000] Booting paravirtualized kernel on bare hardware
>[    0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1910969940391419 ns
>[    0.000000] setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:4 nr_node_ids:1
>[    0.000000] percpu: Embedded 37 pages/cpu @ffff880271000000 s113384 r8192 d29976 u524288
>[    0.000000] pcpu-alloc: s113384 r8192 d29976 u524288 alloc=1*2097152
>[    0.000000] pcpu-alloc: [0] 0 1 2 3 
>[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 2017925
>[    0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-4.14.0cnl_staging+ root=/dev/mapper/fedora-root ro rd.lvm.lv=fedora/root rd.lvm.lv=fedora/swap rhgb quiet LANG=en_US.UTF-8
>[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
>[    0.000000] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes)
>[    0.000000] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes)
>[    0.000000] Memory: 7880196K/8199928K available (12831K kernel code, 1684K rwdata, 5112K rodata, 1588K init, 884K bss, 319732K reserved, 0K cma-reserved)
>[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
>[    0.000000] ftrace: allocating 47124 entries in 185 pages
>[    0.000000] Preemptible hierarchical RCU implementation.
>[    0.000000] 	RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4.
>[    0.000000] 	Tasks RCU enabled.
>[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
>[    0.000000] NR_IRQS: 4352, nr_irqs: 1024, preallocated irqs: 16
>[    0.000000] Console: colour dummy device 80x25
>[    0.000000] console [tty0] enabled
>[    0.000000] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635855245 ns
>[    0.000000] hpet clockevent registered
>[    0.001000] tsc: Detected 2200.000 MHz processor
>[    0.001000] Calibrating delay loop (skipped), value calculated using timer frequency.. 4416.00 BogoMIPS (lpj=2208000)
>[    0.001000] pid_max: default: 32768 minimum: 301
>[    0.001000] ACPI: Core revision 20170728
>[    0.091312] ACPI: 12 ACPI AML tables successfully acquired and loaded
>[    0.092357] Security Framework initialized
>[    0.092454] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes)
>[    0.092482] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes)
>[    0.092849] CPU: Physical Processor ID: 0
>[    0.092851] CPU: Processor Core ID: 0
>[    0.092859] ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
>[    0.092861] ENERGY_PERF_BIAS: View and update with x86_energy_perf_policy(8)
>[    0.092883] mce: CPU supports 8 MCE banks
>[    0.092904] CPU0: Thermal monitoring enabled (TM1)
>[    0.092937] process: using mwait in idle threads
>[    0.092942] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
>[    0.092944] Last level dTLB entries: 4KB 64, 2MB 0, 4MB 0, 1GB 4
>[    0.093239] Freeing SMP alternatives memory: 48K
>[    0.101380] smpboot: Max logical packages: 2
>[    0.107977] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
>[    0.117044] TSC deadline timer enabled
>[    0.117065] smpboot: CPU0: Intel 1.00GHz (family: 0x6, model: 0x66, stepping: 0x2)
>[    0.121068] Performance Events: PEBS fmt3+, generic architected perfmon, full-width counters, Intel PMU driver.
>[    0.121082] ... version:                4
>[    0.121084] ... bit width:              48
>[    0.121085] ... generic registers:      4
>[    0.121087] ... value mask:             0000ffffffffffff
>[    0.121089] ... max period:             00007fffffffffff
>[    0.121090] ... fixed-purpose events:   3
>[    0.121092] ... event mask:             000000070000000f
>[    0.123013] Hierarchical SRCU implementation.
>[    0.129011] smp: Bringing up secondary CPUs ...
>[    0.136087] x86: Booting SMP configuration:
>[    0.136090] .... node  #0, CPUs:      #1 #2 #3
>[    0.153310] smp: Brought up 1 node, 4 CPUs
>[    0.153310] smpboot: Total of 4 processors activated (17664.00 BogoMIPS)
>[    0.154415] devtmpfs: initialized
>[    0.155140] PM: Registering ACPI NVS region [mem 0x83ad2000-0x83c7dfff] (1753088 bytes)
>[    0.155291] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns
>[    0.155297] futex hash table entries: 1024 (order: 4, 65536 bytes)
>[    0.155404] xor: automatically using best checksumming function   avx       
>[    0.155416] pinctrl core: initialized pinctrl subsystem
>[    0.155636] NET: Registered protocol family 16
>[    0.156077] cpuidle: using governor ladder
>[    0.158005] cpuidle: using governor menu
>[    0.158224] Simple Boot Flag at 0x47 set to 0x80
>[    0.158271] ACPI: bus type PCI registered
>[    0.158421] PCI: Using configuration type 1 for base access
>[    0.167074] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
>[    0.184013] raid6: sse2x1   gen()  2976 MB/s
>[    0.201015] raid6: sse2x1   xor()  2248 MB/s
>[    0.218016] raid6: sse2x2   gen()  3796 MB/s
>[    0.235013] raid6: sse2x2   xor()  2300 MB/s
>[    0.252012] raid6: sse2x4   gen()  4566 MB/s
>[    0.269011] raid6: sse2x4   xor()  2699 MB/s
>[    0.286012] raid6: avx2x1   gen()  6054 MB/s
>[    0.303006] raid6: avx2x1   xor()  4228 MB/s
>[    0.320012] raid6: avx2x2   gen()  7371 MB/s
>[    0.337008] raid6: avx2x2   xor()  4337 MB/s
>[    0.354010] raid6: avx2x4   gen()  8882 MB/s
>[    0.371006] raid6: avx2x4   xor()  4646 MB/s
>[    0.388007] raid6: avx512x1 gen()  8968 MB/s
>[    0.405005] raid6: avx512x1 xor()  4812 MB/s
>[    0.422008] raid6: avx512x2 gen() 10933 MB/s
>[    0.439006] raid6: avx512x2 xor()  6326 MB/s
>[    0.456007] raid6: avx512x4 gen() 13351 MB/s
>[    0.473005] raid6: avx512x4 xor()  7160 MB/s
>[    0.473008] raid6: using algorithm avx512x4 gen() 13351 MB/s
>[    0.473011] raid6: .... xor() 7160 MB/s, rmw enabled
>[    0.473013] raid6: using avx512x2 recovery algorithm
>[    0.473142] ACPI: Added _OSI(Module Device)
>[    0.473144] ACPI: Added _OSI(Processor Device)
>[    0.473146] ACPI: Added _OSI(3.0 _SCP Extensions)
>[    0.473148] ACPI: Added _OSI(Processor Aggregator Device)
>[    0.473154] ACPI: EC: EC started
>[    0.473156] ACPI: EC: interrupt blocked
>[    0.608700] ACPI: \: Used as first EC
>[    0.608705] ACPI: \: GPE=0x6e, EC_CMD/EC_SC=0x66, EC_DATA=0x62
>[    0.608707] ACPI: \: Used as boot ECDT EC to handle transactions
>[    0.636560] ACPI Error: [_INI] Namespace lookup failure, AE_ALREADY_EXISTS (20170728/dswload2-346)
>[    0.636581] ACPI Exception: AE_ALREADY_EXISTS, During name lookup/catalog (20170728/psobject-252)
>[    0.636594] ACPI Error: Method parse/execution failed \_SB.PCI0.SAT0, AE_ALREADY_EXISTS (20170728/psparse-550)
>[    0.636609] ACPI: Marking method SAT0 as Serialized because of AE_ALREADY_EXISTS error
>[    0.637895] ACPI: Executed 60 blocks of module-level executable AML code
>[    0.747729] ACPI: Dynamic OEM Table Load:
>[    0.747754] ACPI: SSDT 0xFFFF880267483800 000642 (v02 PmRef  Cpu0Ist  00003000 INTL 20160422)
>[    0.748250] ACPI: Executed 1 blocks of module-level executable AML code
>[    0.748465] ACPI: \_SB_.PR00: _OSC native thermal LVT Acked
>[    0.753339] ACPI: Dynamic OEM Table Load:
>[    0.753359] ACPI: SSDT 0xFFFF880267484000 00046F (v02 PmRef  Cpu0Cst  00003001 INTL 20160422)
>[    0.753777] ACPI: Executed 1 blocks of module-level executable AML code
>[    0.754095] ACPI: Dynamic OEM Table Load:
>[    0.754112] ACPI: SSDT 0xFFFF88026761B200 0000FD (v02 PmRef  Cpu0Hwp  00003000 INTL 20160422)
>[    0.754495] ACPI: Executed 1 blocks of module-level executable AML code
>[    0.754718] ACPI: Dynamic OEM Table Load:
>[    0.754737] ACPI: SSDT 0xFFFF880267484800 000724 (v02 PmRef  HwpLvt   00003000 INTL 20160422)
>[    0.755093] ACPI: Executed 1 blocks of module-level executable AML code
>[    0.756000] ACPI: Dynamic OEM Table Load:
>[    0.756029] ACPI: SSDT 0xFFFF880267C65000 000EF1 (v02 PmRef  ApIst    00003000 INTL 20160422)
>[    0.757702] ACPI: Executed 1 blocks of module-level executable AML code
>[    0.758017] ACPI: Dynamic OEM Table Load:
>[    0.758034] ACPI: SSDT 0xFFFF8802674BB400 000317 (v02 PmRef  ApHwp    00003000 INTL 20160422)
>[    0.758550] ACPI: Executed 1 blocks of module-level executable AML code
>[    0.758865] ACPI: Dynamic OEM Table Load:
>[    0.758881] ACPI: SSDT 0xFFFF8802674BB800 00030A (v02 PmRef  ApCst    00003000 INTL 20160422)
>[    0.759397] ACPI: Executed 1 blocks of module-level executable AML code
>[    0.764733] ACPI: Interpreter enabled
>[    0.764801] ACPI: (supports S0 S3 S5)
>[    0.764804] ACPI: Using IOAPIC for interrupt routing
>[    0.764878] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
>[    0.768986] ACPI: Enabled 6 GPEs in block 00 to 7F
>[    0.789450] ACPI: Power Resource [USBC] (on)
>[    0.789844] ACPI: Power Resource [PAUD] (on)
>[    0.800488] ACPI: Power Resource [PXP] (off)
>[    0.804851] ACPI: Power Resource [PXP] (off)
>[    0.810499] ACPI: Power Resource [PXP] (on)
>[    0.938999] ACPI: Power Resource [V0PR] (on)
>[    0.939466] ACPI: Power Resource [V1PR] (on)
>[    0.939912] ACPI: Power Resource [V2PR] (on)
>[    0.998390] ACPI: Power Resource [FN00] (off)
>[    0.998612] ACPI: Power Resource [FN01] (off)
>[    0.998824] ACPI: Power Resource [FN02] (off)
>[    0.999041] ACPI: Power Resource [FN03] (off)
>[    0.999250] ACPI: Power Resource [FN04] (off)
>[    1.002202] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-fe])
>[    1.002213] acpi PNP0A08:00: _OSC: OS supports [ASPM ClockPM Segments MSI]
>[    1.002438] acpi PNP0A08:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI]
>[    1.003046] PCI host bridge to bus 0000:00
>[    1.003051] pci_bus 0000:00: root bus resource [io  0x0000-0x0cf7 window]
>[    1.003055] pci_bus 0000:00: root bus resource [io  0x0d00-0xffff window]
>[    1.003058] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
>[    1.003061] pci_bus 0000:00: root bus resource [mem 0x8ec00000-0xdfffffff window]
>[    1.003063] pci_bus 0000:00: root bus resource [mem 0xfc800000-0xfe7fffff window]
>[    1.003067] pci_bus 0000:00: root bus resource [bus 00-fe]
>[    1.003123] pci 0000:00:00.0: [8086:5a02] type 00 class 0x060000
>[    1.005600] pci 0000:00:02.0: [8086:5a49] type 00 class 0x030000
>[    1.005624] pci 0000:00:02.0: reg 0x10: [mem 0xa0000000-0xa0ffffff 64bit]
>[    1.005639] pci 0000:00:02.0: reg 0x18: [mem 0x90000000-0x9fffffff 64bit pref]
>[    1.005649] pci 0000:00:02.0: reg 0x20: [io  0x4000-0x403f]
>[    1.005683] pci 0000:00:02.0: BAR 2: assigned to efifb
>[    1.007340] pci 0000:00:05.0: [8086:5a19] type 00 class 0x048000
>[    1.007360] pci 0000:00:05.0: reg 0x10: [mem 0xa1000000-0xa1ffffff 64bit]
>[    1.009037] pci 0000:00:08.0: [8086:5a11] type 00 class 0x088000
>[    1.009065] pci 0000:00:08.0: reg 0x10: [mem 0xa2238000-0xa2238fff 64bit]
>[    1.010787] pci 0000:00:12.0: [8086:9df9] type 00 class 0x118000
>[    1.010841] pci 0000:00:12.0: reg 0x10: [mem 0xa2239000-0xa2239fff 64bit]
>[    1.012592] pci 0000:00:13.0: [8086:9dfc] type 00 class 0x070000
>[    1.012642] pci 0000:00:13.0: reg 0x10: [mem 0xa2234000-0xa2235fff 64bit]
>[    1.012773] pci 0000:00:13.0: PME# supported from D0 D3hot
>[    1.014566] pci 0000:00:14.0: [8086:9ded] type 00 class 0x0c0330
>[    1.014616] pci 0000:00:14.0: reg 0x10: [mem 0xa2220000-0xa222ffff 64bit]
>[    1.014757] pci 0000:00:14.0: PME# supported from D3hot D3cold
>[    1.016490] pci 0000:00:14.2: [8086:9def] type 00 class 0x050000
>[    1.016538] pci 0000:00:14.2: reg 0x10: [mem 0xa2236000-0xa2237fff 64bit]
>[    1.016569] pci 0000:00:14.2: reg 0x18: [mem 0xa223a000-0xa223afff 64bit]
>[    1.018222] pci 0000:00:14.5: [8086:9df5] type 00 class 0x080501
>[    1.018276] pci 0000:00:14.5: reg 0x10: [mem 0xa223b000-0xa223bfff 64bit]
>[    1.020396] pci 0000:00:15.0: [8086:9de8] type 00 class 0x0c8000
>[    1.021128] pci 0000:00:15.0: reg 0x10: [mem 0xa223c000-0xa223cfff 64bit]
>[    1.025101] pci 0000:00:15.1: [8086:9de9] type 00 class 0x0c8000
>[    1.025840] pci 0000:00:15.1: reg 0x10: [mem 0xa223d000-0xa223dfff 64bit]
>[    1.029635] pci 0000:00:16.0: [8086:9de0] type 00 class 0x078000
>[    1.029690] pci 0000:00:16.0: reg 0x10: [mem 0xa223e000-0xa223efff 64bit]
>[    1.029839] pci 0000:00:16.0: PME# supported from D3hot
>[    1.031653] pci 0000:00:16.4: [8086:9de4] type 00 class 0x078000
>[    1.031707] pci 0000:00:16.4: reg 0x10: [mem 0xa223f000-0xa223ffff 64bit]
>[    1.031856] pci 0000:00:16.4: PME# supported from D3hot
>[    1.033728] pci 0000:00:19.0: [8086:9dc5] type 00 class 0x0c8000
>[    1.034473] pci 0000:00:19.0: reg 0x10: [mem 0xa2240000-0xa2240fff 64bit]
>[    1.038259] pci 0000:00:1a.0: [8086:9dc4] type 00 class 0x080501
>[    1.038313] pci 0000:00:1a.0: reg 0x10: [mem 0xa2241000-0xa2241fff 64bit]
>[    1.040305] pci 0000:00:1d.0: [8086:9db0] type 01 class 0x060400
>[    1.040450] pci 0000:00:1d.0: PME# supported from D0 D3hot D3cold
>[    1.042484] pci 0000:00:1e.0: [8086:9da8] type 00 class 0x078000
>[    1.043205] pci 0000:00:1e.0: reg 0x10: [mem 0xa2242000-0xa2242fff 64bit]
>[    1.046990] pci 0000:00:1f.0: [8086:9d83] type 00 class 0x060100
>[    1.048794] pci 0000:00:1f.3: [8086:9dc8] type 00 class 0x040100
>[    1.048879] pci 0000:00:1f.3: reg 0x10: [mem 0xa2230000-0xa2233fff 64bit]
>[    1.048957] pci 0000:00:1f.3: reg 0x20: [mem 0xa2000000-0xa20fffff 64bit]
>[    1.049124] pci 0000:00:1f.3: PME# supported from D3hot D3cold
>[    1.051027] pci 0000:00:1f.4: [8086:9da3] type 00 class 0x0c0500
>[    1.051142] pci 0000:00:1f.4: reg 0x10: [mem 0xa2243000-0xa22430ff 64bit]
>[    1.051246] pci 0000:00:1f.4: reg 0x20: [io  0xefa0-0xefbf]
>[    1.052992] pci 0000:00:1f.5: [8086:9da4] type 00 class 0x0c8000
>[    1.053041] pci 0000:00:1f.5: reg 0x10: [mem 0xfe010000-0xfe010fff]
>[    1.054720] pci 0000:00:1f.6: [8086:15be] type 00 class 0x020000
>[    1.054787] pci 0000:00:1f.6: reg 0x10: [mem 0xa2200000-0xa221ffff]
>[    1.055026] pci 0000:00:1f.6: PME# supported from D0 D3hot D3cold
>[    1.056824] pci 0000:01:00.0: [144d:a802] type 00 class 0x010802
>[    1.056860] pci 0000:01:00.0: reg 0x10: [mem 0xa2100000-0xa2103fff 64bit]
>[    1.056875] pci 0000:01:00.0: reg 0x18: [io  0x3000-0x30ff]
>[    1.060166] pci 0000:00:1d.0: PCI bridge to [bus 01]
>[    1.060172] pci 0000:00:1d.0:   bridge window [io  0x3000-0x3fff]
>[    1.060177] pci 0000:00:1d.0:   bridge window [mem 0xa2100000-0xa21fffff]
>[    1.060198] pci_bus 0000:00: on NUMA node 0
>[    1.066717] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 10 11 12 14 *15), disabled.
>[    1.066873] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 10 11 12 14 *15), disabled.
>[    1.067020] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 10 11 12 14 *15), disabled.
>[    1.067169] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 10 11 12 14 *15), disabled.
>[    1.067318] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 10 11 12 14 *15), disabled.
>[    1.067465] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 10 11 12 14 *15), disabled.
>[    1.067611] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 10 11 12 14 *15), disabled.
>[    1.067758] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 10 11 12 14 *15), disabled.
>[    1.068780] platform MSFT0101:00: failed to claim resource 1: [mem 0xfed40000-0xfed40fff]
>[    1.068795] acpi MSFT0101:00: platform device creation failed: -16
>[    1.069631] ACPI: EC: interrupt unblocked
>[    1.069654] ACPI: EC: event unblocked
>[    1.069723] ACPI: \_SB_.PCI0.LPCB.H_EC: GPE=0x6e, EC_CMD/EC_SC=0x66, EC_DATA=0x62
>[    1.069727] ACPI: \_SB_.PCI0.LPCB.H_EC: Used as boot DSDT EC to handle transactions and events
>[    1.070152] pci 0000:00:02.0: vgaarb: setting as boot VGA device
>[    1.070152] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
>[    1.070152] pci 0000:00:02.0: vgaarb: bridge control possible
>[    1.070152] vgaarb: loaded
>[    1.070180] SCSI subsystem initialized
>[    1.070211] libata version 3.00 loaded.
>[    1.070211] ACPI: bus type USB registered
>[    1.070211] usbcore: registered new interface driver usbfs
>[    1.070211] usbcore: registered new interface driver hub
>[    1.070211] usbcore: registered new device driver usb
>[    1.070217] media: Linux media interface: v0.10
>[    1.070229] Linux video capture interface: v2.00
>[    1.070249] pps_core: LinuxPPS API ver. 1 registered
>[    1.070250] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
>[    1.070255] PTP clock support registered
>[    1.070290] Registered efivars operations
>[    1.090053] Advanced Linux Sound Architecture Driver Initialized.
>[    1.090054] PCI: Using ACPI for IRQ routing
>[    1.090057] PCI: pci_cache_line_size set to 64 bytes
>[    1.090534] e820: reserve RAM buffer [mem 0x0009f000-0x0009ffff]
>[    1.090537] e820: reserve RAM buffer [mem 0x7f2bb018-0x7fffffff]
>[    1.090540] e820: reserve RAM buffer [mem 0x8341f000-0x83ffffff]
>[    1.090542] e820: reserve RAM buffer [mem 0x83d10000-0x83ffffff]
>[    1.090544] e820: reserve RAM buffer [mem 0x271400000-0x273ffffff]
>[    1.090722] Bluetooth: Core ver 2.22
>[    1.090732] NET: Registered protocol family 31
>[    1.090734] Bluetooth: HCI device and connection manager initialized
>[    1.090738] Bluetooth: HCI socket layer initialized
>[    1.090741] Bluetooth: L2CAP socket layer initialized
>[    1.090750] Bluetooth: SCO socket layer initialized
>[    1.090782] nfc: nfc_init: NFC Core ver 0.1
>[    1.090782] NET: Registered protocol family 39
>[    1.091254] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0, 0, 0, 0, 0, 0
>[    1.091268] hpet0: 8 comparators, 64-bit 24.000000 MHz counter
>[    1.094056] clocksource: Switched to clocksource hpet
>[    1.130783] pnp: PnP ACPI init
>[    1.131360] system 00:00: [io  0x1800-0x18fe] has been reserved
>[    1.131364] system 00:00: [mem 0xfd000000-0xfd69ffff] has been reserved
>[    1.131368] system 00:00: [mem 0xfd6b0000-0xfd6cffff] has been reserved
>[    1.131371] system 00:00: [mem 0xfd6f0000-0xfdffffff] has been reserved
>[    1.131375] system 00:00: [mem 0xfe000000-0xfe01ffff] could not be reserved
>[    1.131378] system 00:00: [mem 0xfe200000-0xfe7fffff] has been reserved
>[    1.131389] system 00:00: Plug and Play ACPI device, IDs PNP0c02 (active)
>[    1.131942] system 00:01: [io  0x2000-0x20fe] has been reserved
>[    1.131949] system 00:01: Plug and Play ACPI device, IDs PNP0c02 (active)
>[    1.132382] system 00:02: [io  0x06a4] has been reserved
>[    1.132385] system 00:02: [io  0x06a0] has been reserved
>[    1.132392] system 00:02: Plug and Play ACPI device, IDs PNP0c02 (active)
>[    1.132794] system 00:03: [io  0x0680-0x069f] has been reserved
>[    1.132798] system 00:03: [io  0x164e-0x164f] has been reserved
>[    1.132804] system 00:03: Plug and Play ACPI device, IDs PNP0c02 (active)
>[    1.132853] pnp 00:04: Plug and Play ACPI device, IDs PNP0b00 (active)
>[    1.133109] system 00:05: [io  0x1854-0x1857] has been reserved
>[    1.133117] system 00:05: Plug and Play ACPI device, IDs INT3f0d PNP0c02 (active)
>[    1.133287] pnp 00:06: Plug and Play ACPI device, IDs PNP0501 (active)
>[    1.133398] pnp 00:07: Plug and Play ACPI device, IDs PNP0303 (active)
>[    1.135703] system 00:08: Plug and Play ACPI device, IDs PNP0c02 (active)
>[    1.138460] system 00:09: [mem 0xfed10000-0xfed17fff] has been reserved
>[    1.138464] system 00:09: [mem 0xfeda0000-0xfeda0fff] has been reserved
>[    1.138467] system 00:09: [mem 0xfeda1000-0xfeda1fff] has been reserved
>[    1.138470] system 00:09: [mem 0xe0000000-0xefffffff] has been reserved
>[    1.138473] system 00:09: [mem 0xfed20000-0xfed3ffff] has been reserved
>[    1.138477] system 00:09: [mem 0xfed90000-0xfed93fff] has been reserved
>[    1.138480] system 00:09: [mem 0xfed45000-0xfed8ffff] has been reserved
>[    1.138483] system 00:09: [mem 0xff000000-0xffffffff] could not be reserved
>[    1.138486] system 00:09: [mem 0xfee00000-0xfeefffff] has been reserved
>[    1.138494] system 00:09: Plug and Play ACPI device, IDs PNP0c02 (active)
>[    1.139621] system 00:0a: [mem 0x00000000-0x0009cfff] could not be reserved
>[    1.139628] system 00:0a: Plug and Play ACPI device, IDs PNP0c01 (active)
>[    1.139959] pnp: PnP ACPI: found 11 devices
>[    1.154416] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
>[    1.154455] pci 0000:00:1d.0: PCI bridge to [bus 01]
>[    1.154471] pci 0000:00:1d.0:   bridge window [io  0x3000-0x3fff]
>[    1.154489] pci 0000:00:1d.0:   bridge window [mem 0xa2100000-0xa21fffff]
>[    1.154514] pci_bus 0000:00: resource 4 [io  0x0000-0x0cf7 window]
>[    1.154517] pci_bus 0000:00: resource 5 [io  0x0d00-0xffff window]
>[    1.154520] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
>[    1.154522] pci_bus 0000:00: resource 7 [mem 0x8ec00000-0xdfffffff window]
>[    1.154525] pci_bus 0000:00: resource 8 [mem 0xfc800000-0xfe7fffff window]
>[    1.154528] pci_bus 0000:01: resource 0 [io  0x3000-0x3fff]
>[    1.154530] pci_bus 0000:01: resource 1 [mem 0xa2100000-0xa21fffff]
>[    1.155201] NET: Registered protocol family 2
>[    1.155445] TCP established hash table entries: 65536 (order: 7, 524288 bytes)
>[    1.155624] TCP bind hash table entries: 65536 (order: 9, 2097152 bytes)
>[    1.156370] TCP: Hash tables configured (established 65536 bind 65536)
>[    1.156420] UDP hash table entries: 4096 (order: 6, 393216 bytes)
>[    1.156546] UDP-Lite hash table entries: 4096 (order: 6, 393216 bytes)
>[    1.156733] NET: Registered protocol family 1
>[    1.157259] RPC: Registered named UNIX socket transport module.
>[    1.157260] RPC: Registered udp transport module.
>[    1.157262] RPC: Registered tcp transport module.
>[    1.157264] RPC: Registered tcp NFSv4.1 backchannel transport module.
>[    1.157289] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
>[    1.158410] PCI: CLS 0 bytes, default 64
>[    1.158484] Trying to unpack rootfs image as initramfs...
>[    1.982650] Freeing initrd memory: 18876K
>[    1.982657] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
>[    1.982662] software IO TLB [mem 0x7b2bb000-0x7f2bb000] (64MB) mapped at [ffff88007b2bb000-ffff88007f2bafff]
>[    1.983538] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fd3b81b95f, max_idle_ns: 440795257325 ns
>[    1.985323] Scanning for low memory corruption every 60 seconds
>[    1.987515] workingset: timestamp_bits=46 max_order=21 bucket_order=0
>[    1.990687] squashfs: version 4.0 (2009/01/31) Phillip Lougher
>[    1.991197] NFS: Registering the id_resolver key type
>[    1.991209] Key type id_resolver registered
>[    1.991211] Key type id_legacy registered
>[    1.991217] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
>[    1.991221] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
>[    1.991549] fuse init (API version 7.26)
>[    1.991735] 9p: Installing v9fs 9p2000 file system support
>[    1.998555] NET: Registered protocol family 38
>[    1.998816] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 246)
>[    1.998994] io scheduler noop registered
>[    1.998996] io scheduler deadline registered
>[    1.999147] io scheduler cfq registered (default)
>[    1.999149] io scheduler mq-deadline registered
>[    1.999151] io scheduler kyber registered
>[    2.000071] efifb: probing for efifb
>[    2.000097] efifb: framebuffer at 0x90000000, using 14400k, total 14400k
>[    2.000099] efifb: mode is 2560x1440x32, linelength=10240, pages=1
>[    2.000100] efifb: scrolling: redraw
>[    2.000104] efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0
>[    2.021488] Console: switching to colour frame buffer device 320x90
>[    2.052621] fb0: EFI VGA frame buffer device
>[    2.052648] intel_idle: does not run on family 6 model 102
>[    2.053307] ACPI: AC Adapter [ADP1] (on-line)
>[    2.055266] input: Lid Switch as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:1b/PNP0C09:00/PNP0C0D:00/input/input0
>[    2.056293] ACPI: Lid Switch [LID0]
>[    2.056434] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input1
>[    2.056518] ACPI: Power Button [PWRB]
>[    2.056584] input: Sleep Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input2
>[    2.056618] ACPI: Sleep Button [SLPB]
>[    2.056691] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input3
>[    2.056755] ACPI: Power Button [PWRF]
>[    2.105853] Monitor-Mwait will be used to enter C-1 state
>[    2.105862] Monitor-Mwait will be used to enter C-2 state
>[    2.105869] Monitor-Mwait will be used to enter C-3 state
>[    2.112463] (NULL device *): hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info().
>[    2.171740] thermal LNXTHERM:00: registered as thermal_zone0
>[    2.171742] ACPI: Thermal Zone [TZ00] (41 C)
>[    2.178556] thermal LNXTHERM:01: registered as thermal_zone1
>[    2.178559] ACPI: Thermal Zone [TZ01] (0 C)
>[    2.179353] ACPI: Battery Slot [BAT0] (battery present)
>[    2.179471] ACPI: Battery Slot [BAT1] (battery absent)
>[    2.179622] ACPI: Battery Slot [BAT2] (battery absent)
>[    2.253655] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
>[    2.275118] 00:06: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
>[    2.276125] serial 0000:00:13.0: enabling device (0000 -> 0002)
>[    2.277596] Linux agpgart interface v0.103
>[    2.280240] [drm] Memory usable by graphics device = 4096M
>[    2.280245] checking generic (90000000 e10000) vs hw (90000000 10000000)
>[    2.280246] fb: switching to inteldrmfb from EFI VGA
>[    2.280288] Console: switching to colour dummy device 80x25
>[    2.280514] [drm] Replacing VGA console driver
>[    2.286562] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
>[    2.286564] [drm] Driver supports precise vblank timestamp query.
>[    2.289409] i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
>[    2.289513] i915 0000:00:02.0: Direct firmware load for i915/cnl_dmc_ver1_06.bin failed with error -2
>[    2.289517] i915 0000:00:02.0: Failed to load DMC firmware i915/cnl_dmc_ver1_06.bin. Disabling runtime power management.
>[    2.289520] i915 0000:00:02.0: DMC firmware homepage: https://01.org/linuxgraphics/downloads/firmware
>[    2.305590] [drm] RC6 on
>[    2.307247] [drm] Initialized i915 1.6.0 20171109 for 0000:00:02.0 on minor 0
>[    2.310678] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
>[    2.311636] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input4
>[    2.319681] fbcon: inteldrmfb (fb0) is primary device
>[    2.323368] brd: module loaded
>[    2.327985] loop: module loaded
>[    2.328180] Uniform Multi-Platform E-IDE driver
>[    2.328254] ide-gd driver 1.18
>[    2.328264] ide-cd driver 5.00
>[    2.328745] nvme nvme0: pci function 0000:01:00.0
>[    2.328978] CAN device driver interface
>[    2.328980] pcnet32: pcnet32.c:v1.35 21.Apr.2008 tsbogend@alpha.franken.de
>[    2.329070] e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI
>[    2.329071] e100: Copyright(c) 1999-2006 Intel Corporation
>[    2.329095] e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI
>[    2.329096] e1000: Copyright (c) 1999-2006 Intel Corporation.
>[    2.329119] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
>[    2.329119] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
>[    2.329158] e1000e 0000:00:1f.6: enabling device (0000 -> 0002)
>[    2.329579] e1000e 0000:00:1f.6: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
>[    2.436935]  nvme0n1: p1 p2 p3
>[    2.600655] e1000e 0000:00:1f.6 0000:00:1f.6 (uninitialized): registered PHC clock
>[    2.689460] e1000e 0000:00:1f.6 eth0: (PCI Express:2.5GT/s:Width x1) 90:49:fa:03:a4:75
>[    2.689464] e1000e 0000:00:1f.6 eth0: Intel(R) PRO/1000 Network Connection
>[    2.689640] e1000e 0000:00:1f.6 eth0: MAC: 13, PHY: 12, PBA No: FFFFFF-0FF
>[    2.689701] usbcore: registered new interface driver r8152
>[    2.689715] usbcore: registered new interface driver asix
>[    2.689736] usbcore: registered new interface driver ax88179_178a
>[    2.689748] usbcore: registered new interface driver cdc_ether
>[    2.689761] usbcore: registered new interface driver net1080
>[    2.689774] usbcore: registered new interface driver cdc_subset
>[    2.689785] usbcore: registered new interface driver zaurus
>[    2.689802] usbcore: registered new interface driver cdc_ncm
>[    2.689874] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
>[    2.689886] ehci-pci: EHCI PCI platform driver
>[    2.689908] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
>[    2.689911] ohci-pci: OHCI PCI platform driver
>[    2.689929] uhci_hcd: USB Universal Host Controller Interface driver
>[    2.690498] xhci_hcd 0000:00:14.0: xHCI Host Controller
>[    2.690508] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1
>[    2.691788] xhci_hcd 0000:00:14.0: hcc params 0x20007fc1 hci version 0x110 quirks 0x00009810
>[    2.691808] xhci_hcd 0000:00:14.0: cache line size of 64 is not supported
>[    2.692459] hub 1-0:1.0: USB hub found
>[    2.692493] hub 1-0:1.0: 12 ports detected
>[    2.696580] xhci_hcd 0000:00:14.0: xHCI Host Controller
>[    2.696586] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 2
>[    2.696591] xhci_hcd 0000:00:14.0: Host supports USB 3.1 Enhanced SuperSpeed
>[    2.696955] hub 2-0:1.0: USB hub found
>[    2.696983] hub 2-0:1.0: 6 ports detected
>[    2.698772] usb: port power management may be unreliable
>[    2.699413] usbcore: registered new interface driver usb-storage
>[    2.699444] usbcore: registered new interface driver usbserial
>[    2.699457] usbcore: registered new interface driver usbserial_generic
>[    2.699467] usbserial: USB Serial support registered for generic
>[    2.699479] usbcore: registered new interface driver cp210x
>[    2.699487] usbserial: USB Serial support registered for cp210x
>[    2.699504] usbcore: registered new interface driver ftdi_sio
>[    2.699512] usbserial: USB Serial support registered for FTDI USB Serial Device
>[    2.699549] usbcore: registered new interface driver pl2303
>[    2.699557] usbserial: USB Serial support registered for pl2303
>[    2.699634] i8042: PNP: PS/2 Controller [PNP0303:PS2K] at 0x60,0x64 irq 1
>[    2.699635] i8042: PNP: PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp
>[    2.700145] i8042: Warning: Keylock active
>[    2.700336] serio: i8042 KBD port at 0x60,0x64 irq 1
>[    2.700726] mousedev: PS/2 mouse device common for all mice
>[    2.701603] usbcore: registered new interface driver appletouch
>[    2.701750] rtc_cmos 00:04: RTC can wake from S4
>[    2.702860] rtc_cmos 00:04: rtc core: registered rtc_cmos as rtc0
>[    2.703096] rtc_cmos 00:04: alarms up to one month, y3k, 242 bytes nvram, hpet irqs
>[    2.703137] i2c /dev entries driver
>[    2.704198] i801_smbus 0000:00:1f.4: enabling device (0000 -> 0003)
>[    2.704553] i801_smbus 0000:00:1f.4: SPD Write Disable is set
>[    2.704613] i801_smbus 0000:00:1f.4: SMBus using PCI interrupt
>[    2.717173] IR NEC protocol handler initialized
>[    2.717175] IR RC5(x/sz) protocol handler initialized
>[    2.717176] IR RC6 protocol handler initialized
>[    2.717176] IR JVC protocol handler initialized
>[    2.717177] IR Sony protocol handler initialized
>[    2.717178] IR SANYO protocol handler initialized
>[    2.717179] IR Sharp protocol handler initialized
>[    2.717180] IR MCE Keyboard/mouse protocol handler initialized
>[    2.717181] IR XMP protocol handler initialized
>[    2.717183] ivtv: Start initialization, version 1.4.3
>[    2.717206] ivtv: End initialization
>[    2.717208] ivtvfb: no cards found
>[    2.717899] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
>[    2.718152] iTCO_wdt iTCO_wdt: can't request region for resource [mem 0x00c5fffc-0x00c5ffff]
>[    2.718158] iTCO_wdt: probe of iTCO_wdt failed with error -16
>[    2.718175] iTCO_vendor_support: vendor-support=0
>[    2.718442] device-mapper: ioctl: 4.37.0-ioctl (2017-09-20) initialised: dm-devel@redhat.com
>[    2.718694] usbcore: registered new interface driver btusb
>[    2.718700] intel_pstate: Intel P-state driver initializing
>[    2.721212] intel_pstate: HWP enabled
>[    2.721220] sdhci: Secure Digital Host Controller Interface driver
>[    2.721220] sdhci: Copyright(c) Pierre Ossman
>[    2.721238] sdhci-pci 0000:00:14.5: SDHCI controller found [8086:9df5] (rev 11)
>[    2.722367] sdhci-pci 0000:00:1a.0: SDHCI controller found [8086:9dc4] (rev 11)
>[    2.723370] mmc0: SDHCI controller on PCI [0000:00:1a.0] using ADMA 64-bit
>[    2.723482] usbcore: registered new interface driver ushc
>[    2.723900] ledtrig-cpu: registered to indicate activity on CPUs
>[    2.724409] EFI Variables Facility v0.08 2004-May-17
>[    2.741644] pstore: using zlib compression
>[    2.741646] pstore: Registered efi as persistent store backend
>[    2.741810] usbcore: registered new interface driver usbhid
>[    2.741810] usbhid: USB HID core driver
>[    2.741831] oprofile: using NMI interrupt.
>[    2.741855] u32 classifier
>[    2.741856]     Actions configured
>[    2.741909] ip_tables: (C) 2000-2006 Netfilter Core Team
>[    2.741984] NET: Registered protocol family 10
>[    2.742447] Segment Routing with IPv6
>[    2.742471] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
>[    2.742587] NET: Registered protocol family 17
>[    2.742589] can: controller area network core (rev 20170425 abi 9)
>[    2.742602] NET: Registered protocol family 29
>[    2.742603] can: raw protocol (rev 20170425)
>[    2.742603] can: broadcast manager protocol (rev 20170425 t)
>[    2.742605] can: netlink gateway (rev 20170425) max_hops=1
>[    2.742779] Bluetooth: RFCOMM TTY layer initialized
>[    2.742789] Bluetooth: RFCOMM socket layer initialized
>[    2.742801] Bluetooth: RFCOMM ver 1.11
>[    2.742812] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
>[    2.742813] Bluetooth: BNEP filters: protocol multicast
>[    2.742823] Bluetooth: BNEP socket layer initialized
>[    2.742824] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
>[    2.742825] Bluetooth: HIDP socket layer initialized
>[    2.742855] 9pnet: Installing 9P2000 support
>[    2.742873] Key type dns_resolver registered
>[    2.743473] microcode: sig=0x60662, pf=0x80, revision=0x12
>[    2.743673] microcode: Microcode Update Driver: v2.2.
>[    2.743679] AVX2 version of gcm_enc/dec engaged.
>[    2.743680] AES CTR mode by8 optimization enabled
>[    2.747642] sched_clock: Marking stable (2747627402, 0)->(2767396195, -19768793)
>[    2.747941] registered taskstats version 1
>[    2.748205] Btrfs loaded, crc32c=crc32c-intel
>[    2.750595] Key type trusted registered
>[    2.752284] sdhci-pci 0000:00:14.5: SDHCI controller found [8086:9df5] (rev 11)
>[    2.927223] atkbd serio0: Failed to deactivate keyboard on isa0060/serio0
>[    2.991860] clocksource: Switched to clocksource tsc
>[    3.017343] usb 1-6: new high-speed USB device number 2 using xhci_hcd
>[    3.149465] hub 1-6:1.0: USB hub found
>[    3.150005] hub 1-6:1.0: 4 ports detected
>[    3.153633] sdhci-pci 0000:00:14.5: SDHCI controller found [8086:9df5] (rev 11)
>[    3.259515] usb 2-4: new SuperSpeedPlus USB device number 2 using xhci_hcd
>[    3.275568] usb-storage 2-4:1.0: USB Mass Storage device detected
>[    3.275842] usb-storage 2-4:1.0: Quirks match for vid 174c pid 55aa: 400000
>[    3.275916] scsi host0: usb-storage 2-4:1.0
>[    3.276256] sdhci-pci 0000:00:14.5: SDHCI controller found [8086:9df5] (rev 11)
>[    3.303079] atkbd serio0: Failed to enable keyboard on isa0060/serio0
>[    3.303192] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input5
>[    3.303488] sdhci-pci 0000:00:14.5: SDHCI controller found [8086:9df5] (rev 11)
>[    3.426317] usb 1-6.2: new full-speed USB device number 3 using xhci_hcd
>[    3.511002] input: Logitech USB Receiver as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.2/1-6.2:1.0/0003:046D:C52B.0001/input/input6
>[    3.523251] Console: switching to colour frame buffer device 320x90
>[    3.542093] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
>[    3.542154] console [netcon0] enabled
>[    3.542155] netconsole: network logging started
>[    3.542366] rtc_cmos 00:04: setting system clock to 2017-11-17 13:04:28 UTC (1510923868)
>[    3.542426] ALSA device list:
>[    3.542427]   No soundcards found.
>[    3.563537] hid-generic 0003:046D:C52B.0001: input: USB HID v1.11 Keyboard [Logitech USB Receiver] on usb-0000:00:14.0-6.2/input0
>[    3.563691] sdhci-pci 0000:00:14.5: SDHCI controller found [8086:9df5] (rev 11)
>[    3.567804] input: Logitech USB Receiver as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.2/1-6.2:1.1/0003:046D:C52B.0002/input/input7
>[    3.619683] hid-generic 0003:046D:C52B.0002: input,hiddev96: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-0000:00:14.0-6.2/input1
>[    3.619963] sdhci-pci 0000:00:14.5: SDHCI controller found [8086:9df5] (rev 11)
>[    3.624866] hid-generic 0003:046D:C52B.0003: hiddev97: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-6.2/input2
>[    3.625071] sdhci-pci 0000:00:14.5: SDHCI controller found [8086:9df5] (rev 11)
>[    4.320180] scsi 0:0:0:0: Direct-Access     KINGSTON  SA400S37240G    0    PQ: 0 ANSI: 6
>[    4.320898] sd 0:0:0:0: Attached scsi generic sg0 type 0
>[    4.320903] sdhci-pci 0000:00:14.5: SDHCI controller found [8086:9df5] (rev 11)
>[    4.321203] sd 0:0:0:0: [sda] 468862128 512-byte logical blocks: (240 GB/224 GiB)
>[    4.321500] sd 0:0:0:0: [sda] Write Protect is off
>[    4.321507] sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00
>[    4.321749] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
>[    4.328753]  sda: sda1 sda2 sda3
>[    4.330121] sd 0:0:0:0: [sda] Attached SCSI disk
>[    5.343169] floppy0: no floppy controllers found
>[    5.355749] Freeing unused kernel memory: 1588K
>[    5.355750] Write protecting the kernel read-only data: 20480k
>[    5.356176] Freeing unused kernel memory: 1488K
>[    5.358078] Freeing unused kernel memory: 1032K
>[    5.358083] rodata_test: all tests were successful
>[    5.401846] systemd[1]: systemd 233 running in system mode. (+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN default-hierarchy=hybrid)
>[    5.401977] systemd[1]: Detected architecture x86-64.
>[    5.401979] systemd[1]: Running in initial RAM disk.
>[    5.401990] systemd[1]: Set hostname to <cnltest.jf.intel.com>.
>[    5.439064] systemd[1]: Listening on udev Kernel Socket.
>[    5.439128] systemd[1]: Listening on udev Control Socket.
>[    5.439157] systemd[1]: Reached target Local File Systems.
>[    5.439987] systemd[1]: Reached target Swap.
>[    5.439996] systemd[1]: Reached target Timers.
>[    5.440297] systemd[1]: Created slice System Slice.
>[    5.714259] e1000e 0000:00:1f.6 enp0s31f6: renamed from eth0
>[    6.043879] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
>[    6.383055] systemd-journald[158]: Received SIGTERM from PID 1 (systemd).
>[    6.395305] systemd: 12 output lines suppressed due to ratelimiting
>[    6.423304] systemd[1]: RTC configured in localtime, applying delta of -300 minutes to system time.
>[    6.520135] EXT4-fs (dm-0): re-mounted. Opts: (null)
>[    6.540063] systemd-journald[529]: Received request to flush runtime journal from PID 1
>[    6.554900] random: crng init done
>[    7.032205] Adding 8118268k swap on /dev/mapper/fedora-swap.  Priority:-2 extents:1 across:8118268k SSFS
>[    7.095084] EXT4-fs (nvme0n1p2): mounted filesystem with ordered data mode. Opts: (null)
>[    8.011112] EXT4-fs (dm-2): mounted filesystem with ordered data mode. Opts: (null)
>[    9.033229] IPv6: ADDRCONF(NETDEV_UP): enp0s31f6: link is not ready
>[    9.247798] IPv6: ADDRCONF(NETDEV_UP): enp0s31f6: link is not ready
>[   10.765987] e1000e: enp0s31f6 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
>[   10.765997] e1000e 0000:00:1f.6 enp0s31f6: 10/100 speed: disabling TSO
>[   10.766152] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s31f6: link becomes ready
>[  116.623168] gl-1.0-front-in[1295]: segfault at 74 ip 00007fa7fd9b4efd sp 00007fff9a015a30 error 4 in i965_dri.so[7fa7fd5d2000+80a000]
>[  116.910141] gl-1.0-swapbuff[1311]: segfault at 74 ip 00007fa69efe1efd sp 00007ffc855ff480 error 4 in i965_dri.so[7fa69ebff000+80a000]
>[  117.125642] drawbuffer-mode[1325]: segfault at 74 ip 00007fe11479befd sp 00007ffe6c146290 error 4 in i965_dri.so[7fe1143b9000+80a000]
>[  117.514240] read-front[1348]: segfault at 44 ip 00007fd2f488ecd1 sp 00007ffdbadd14f0 error 4 in i965_dri.so[7fd2f4475000+80a000]
>[  117.725937] read-front[1363]: segfault at 74 ip 00007f69d791fb67 sp 00007fffedc18d40 error 4 in i965_dri.so[7f69d750b000+80a000]
>[  117.993450] read-front[1377]: segfault at 74 ip 00007f754086cb67 sp 00007ffff35042e0 error 4 in i965_dri.so[7f7540458000+80a000]
>[  118.337968] read-front[1393]: segfault at 74 ip 00007fd78cc87b67 sp 00007ffdd3888670 error 4 in i965_dri.so[7fd78c873000+80a000]
>[  118.686401] read-front[1412]: segfault at 74 ip 00007fa562e81b67 sp 00007fff882232d0 error 4 in i965_dri.so[7fa562a6d000+80a000]
>[  119.005230] read-front[1429]: segfault at 74 ip 00007faef61adb67 sp 00007ffed393ab40 error 4 in i965_dri.so[7faef5d99000+80a000]
>[  119.332558] read-front[1454]: segfault at 74 ip 00007f555fb2aefd sp 00007fffba960c50 error 4 in i965_dri.so[7f555f748000+80a000]
>[  133.611897] show_signal_msg: 5 callbacks suppressed
>[  133.611901] gl30basic[2082]: segfault at 74 ip 00007fd167764efd sp 00007ffdccf48410 error 4 in i965_dri.so[7fd167382000+80a000]
>[  174.715307] fbo-sys-blit[3516]: segfault at 208 ip 00007fc3b26d2528 sp 00007fff11c0e330 error 4 in i965_dri.so[7fc3b22ba000+80a000]
>[  174.916078] fbo-sys-sub-bli[3523]: segfault at 208 ip 00007f78ec5be528 sp 00007ffca4fb5410 error 4 in i965_dri.so[7f78ec1a6000+80a000]
>[  255.239166] fcc-front-buffe[5490]: segfault at 74 ip 00007f6ae9b2cefd sp 00007ffedd611460 error 4 in i965_dri.so[7f6ae974a000+80a000]
>[  836.770199] [drm] GPU HANG: ecode 10:1:0x00000008, in shader_runner [20493], reason: Hang on bcs0, action: reset
>[  836.770203] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
>[  836.770205] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
>[  836.770207] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
>[  836.770209] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
>[  836.770211] [drm] GPU crash dump saved to /sys/class/drm/card0/error
>[  836.770255] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  844.703190] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  852.703179] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  860.703144] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  868.703200] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  902.751237] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  910.751207] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  918.751318] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  926.751227] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  934.751247] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  950.751272] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  958.751237] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  966.751237] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  974.751271] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  982.751225] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  992.735350] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[  998.751196] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[ 1004.767157] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[ 1012.703188] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[ 1020.703148] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[ 1056.395762] masked-clear[21441]: segfault at 74 ip 00007f11722ceefd sp 00007ffc932acf70 error 4 in i965_dri.so[7f1171eec000+80a000]
>[ 1339.034981] i915 0000:00:02.0: bcs0 is not idle before parking
>[ 1339.035054] intel_engines_park bcs0
>[ 1339.035058] intel_engines_park 	current seqno 5a00a9, last 5a00a9, hangcheck 5a00a9 [2300 ms], inflight 0
>[ 1339.035060] intel_engines_park 	Reset count: 20
>[ 1339.035062] intel_engines_park 	Requests:
>[ 1339.035068] intel_engines_park 	RING_START: 0x00015000 [0x00000000]
>[ 1339.035072] intel_engines_park 	RING_HEAD:  0x00000278 [0x00000000]
>[ 1339.035075] intel_engines_park 	RING_TAIL:  0x00000278 [0x00000000]
>[ 1339.035079] intel_engines_park 	RING_CTL:   0x00003000
>[ 1339.035083] intel_engines_park 	RING_MODE:  0x00000200 [idle]
>[ 1339.035089] intel_engines_park 	ACTHD:  0x00000000_00000278
>[ 1339.035094] intel_engines_park 	BBADDR: 0x00000000_00000074
>[ 1339.035098] intel_engines_park 	Execlist status: 0x00000301 00000000
>[ 1339.035102] intel_engines_park 	Execlist CSB read 3 [3 cached], write 3 [3 from hws], interrupt posted? no
>[ 1339.035104] intel_engines_park 		ELSP[0] count=1, 
>[ 1339.035109] intel_engines_park rq: 5a00a9! [9:8] prio=0 @ 4216ms: arb_gpu_shader5[25222]/0
>[ 1339.035111] intel_engines_park 		ELSP[1] idle
>[ 1339.035113] intel_engines_park 		HW active? 0x1
>[ 1339.035115] intel_engines_park Idle? no
>[ 1339.035116] intel_engines_park 
>[ 1341.018982] i915 0000:00:02.0: bcs0 is not idle before parking
>[ 1341.019052] intel_engines_park bcs0
>[ 1341.019057] intel_engines_park 	current seqno 5a00a9, last 5a00a9, hangcheck 5a00a9 [4284 ms], inflight 0
>[ 1341.019059] intel_engines_park 	Reset count: 20
>[ 1341.019060] intel_engines_park 	Requests:
>[ 1341.019068] intel_engines_park 	RING_START: 0x00015000 [0x00000000]
>[ 1341.019071] intel_engines_park 	RING_HEAD:  0x00000278 [0x00000000]
>[ 1341.019074] intel_engines_park 	RING_TAIL:  0x00000278 [0x00000000]
>[ 1341.019078] intel_engines_park 	RING_CTL:   0x00003000
>[ 1341.019083] intel_engines_park 	RING_MODE:  0x00000200 [idle]
>[ 1341.019088] intel_engines_park 	ACTHD:  0x00000000_00000278
>[ 1341.019093] intel_engines_park 	BBADDR: 0x00000000_00000074
>[ 1341.019098] intel_engines_park 	Execlist status: 0x00000301 00000000
>[ 1341.019102] intel_engines_park 	Execlist CSB read 3 [3 cached], write 3 [3 from hws], interrupt posted? no
>[ 1341.019104] intel_engines_park 		ELSP[0] count=1, 
>[ 1341.019109] intel_engines_park rq: 5a00a9! [9:8] prio=0 @ 6200ms: arb_gpu_shader5[25222]/0
>[ 1341.019111] intel_engines_park 		ELSP[1] idle
>[ 1341.019112] intel_engines_park 		HW active? 0x1
>[ 1341.019115] intel_engines_park Idle? no
>[ 1341.019116] intel_engines_park 
>[ 1343.066981] i915 0000:00:02.0: bcs0 is not idle before parking
>[ 1343.067051] intel_engines_park bcs0
>[ 1343.067055] intel_engines_park 	current seqno 5a00a9, last 5a00a9, hangcheck 5a00a9 [6332 ms], inflight 0
>[ 1343.067056] intel_engines_park 	Reset count: 20
>[ 1343.067058] intel_engines_park 	Requests:
>[ 1343.067065] intel_engines_park 	RING_START: 0x00015000 [0x00000000]
>[ 1343.067068] intel_engines_park 	RING_HEAD:  0x00000278 [0x00000000]
>[ 1343.067071] intel_engines_park 	RING_TAIL:  0x00000278 [0x00000000]
>[ 1343.067076] intel_engines_park 	RING_CTL:   0x00003000
>[ 1343.067080] intel_engines_park 	RING_MODE:  0x00000200 [idle]
>[ 1343.067085] intel_engines_park 	ACTHD:  0x00000000_00000278
>[ 1343.067090] intel_engines_park 	BBADDR: 0x00000000_00000074
>[ 1343.067095] intel_engines_park 	Execlist status: 0x00000301 00000000
>[ 1343.067099] intel_engines_park 	Execlist CSB read 3 [3 cached], write 3 [3 from hws], interrupt posted? no
>[ 1343.067101] intel_engines_park 		ELSP[0] count=1, 
>[ 1343.067105] intel_engines_park rq: 5a00a9! [9:8] prio=0 @ 8248ms: arb_gpu_shader5[25222]/0
>[ 1343.067107] intel_engines_park 		ELSP[1] idle
>[ 1343.067109] intel_engines_park 		HW active? 0x1
>[ 1343.067111] intel_engines_park Idle? no
>[ 1343.067112] intel_engines_park 
>[ 1345.050983] i915 0000:00:02.0: bcs0 is not idle before parking
>[ 1345.051054] intel_engines_park bcs0
>[ 1345.051058] intel_engines_park 	current seqno 5a00a9, last 5a00a9, hangcheck 5a00a9 [8316 ms], inflight 0
>[ 1345.051060] intel_engines_park 	Reset count: 20
>[ 1345.051062] intel_engines_park 	Requests:
>[ 1345.051069] intel_engines_park 	RING_START: 0x00015000 [0x00000000]
>[ 1345.051072] intel_engines_park 	RING_HEAD:  0x00000278 [0x00000000]
>[ 1345.051075] intel_engines_park 	RING_TAIL:  0x00000278 [0x00000000]
>[ 1345.051079] intel_engines_park 	RING_CTL:   0x00003000
>[ 1345.051083] intel_engines_park 	RING_MODE:  0x00000200 [idle]
>[ 1345.051089] intel_engines_park 	ACTHD:  0x00000000_00000278
>[ 1345.051094] intel_engines_park 	BBADDR: 0x00000000_00000074
>[ 1345.051099] intel_engines_park 	Execlist status: 0x00000301 00000000
>[ 1345.051103] intel_engines_park 	Execlist CSB read 3 [3 cached], write 3 [3 from hws], interrupt posted? no
>[ 1345.051105] intel_engines_park 		ELSP[0] count=1, 
>[ 1345.051109] intel_engines_park rq: 5a00a9! [9:8] prio=0 @ 10232ms: arb_gpu_shader5[25222]/0
>[ 1345.051111] intel_engines_park 		ELSP[1] idle
>[ 1345.051113] intel_engines_park 		HW active? 0x1
>[ 1345.051115] intel_engines_park Idle? no
>[ 1345.051116] intel_engines_park 
>[ 1347.034981] i915 0000:00:02.0: bcs0 is not idle before parking
>[ 1347.035048] intel_engines_park bcs0
>[ 1347.035052] intel_engines_park 	current seqno 5a00a9, last 5a00a9, hangcheck 5a00a9 [10300 ms], inflight 0
>[ 1347.035054] intel_engines_park 	Reset count: 20
>[ 1347.035055] intel_engines_park 	Requests:
>[ 1347.035062] intel_engines_park 	RING_START: 0x00015000 [0x00000000]
>[ 1347.035065] intel_engines_park 	RING_HEAD:  0x00000278 [0x00000000]
>[ 1347.035068] intel_engines_park 	RING_TAIL:  0x00000278 [0x00000000]
>[ 1347.035072] intel_engines_park 	RING_CTL:   0x00003000
>[ 1347.035077] intel_engines_park 	RING_MODE:  0x00000200 [idle]
>[ 1347.035082] intel_engines_park 	ACTHD:  0x00000000_00000278
>[ 1347.035088] intel_engines_park 	BBADDR: 0x00000000_00000074
>[ 1347.035092] intel_engines_park 	Execlist status: 0x00000301 00000000
>[ 1347.035096] intel_engines_park 	Execlist CSB read 3 [3 cached], write 3 [3 from hws], interrupt posted? no
>[ 1347.035098] intel_engines_park 		ELSP[0] count=1, 
>[ 1347.035102] intel_engines_park rq: 5a00a9! [9:8] prio=0 @ 12216ms: arb_gpu_shader5[25222]/0
>[ 1347.035104] intel_engines_park 		ELSP[1] idle
>[ 1347.035106] intel_engines_park 		HW active? 0x1
>[ 1347.035107] intel_engines_park Idle? no
>[ 1347.035109] intel_engines_park 
>[ 1349.018980] i915 0000:00:02.0: bcs0 is not idle before parking
>[ 1349.019047] intel_engines_park bcs0
>[ 1349.019051] intel_engines_park 	current seqno 5a00a9, last 5a00a9, hangcheck 5a00a9 [12284 ms], inflight 0
>[ 1349.019053] intel_engines_park 	Reset count: 20
>[ 1349.019054] intel_engines_park 	Requests:
>[ 1349.019062] intel_engines_park 	RING_START: 0x00015000 [0x00000000]
>[ 1349.019065] intel_engines_park 	RING_HEAD:  0x00000278 [0x00000000]
>[ 1349.019068] intel_engines_park 	RING_TAIL:  0x00000278 [0x00000000]
>[ 1349.019072] intel_engines_park 	RING_CTL:   0x00003000
>[ 1349.019077] intel_engines_park 	RING_MODE:  0x00000200 [idle]
>[ 1349.019082] intel_engines_park 	ACTHD:  0x00000000_00000278
>[ 1349.019088] intel_engines_park 	BBADDR: 0x00000000_00000074
>[ 1349.019092] intel_engines_park 	Execlist status: 0x00000301 00000000
>[ 1349.019096] intel_engines_park 	Execlist CSB read 3 [3 cached], write 3 [3 from hws], interrupt posted? no
>[ 1349.019098] intel_engines_park 		ELSP[0] count=1, 
>[ 1349.019102] intel_engines_park rq: 5a00a9! [9:8] prio=0 @ 14200ms: arb_gpu_shader5[25222]/0
>[ 1349.019104] intel_engines_park 		ELSP[1] idle
>[ 1349.019106] intel_engines_park 		HW active? 0x1
>[ 1349.019108] intel_engines_park Idle? no
>[ 1349.019109] intel_engines_park 
>[ 1351.066981] i915 0000:00:02.0: bcs0 is not idle before parking
>[ 1351.067049] intel_engines_park bcs0
>[ 1351.067053] intel_engines_park 	current seqno 5a00a9, last 5a00a9, hangcheck 5a00a9 [14332 ms], inflight 0
>[ 1351.067054] intel_engines_park 	Reset count: 20
>[ 1351.067056] intel_engines_park 	Requests:
>[ 1351.067062] intel_engines_park 	RING_START: 0x00015000 [0x00000000]
>[ 1351.067065] intel_engines_park 	RING_HEAD:  0x00000278 [0x00000000]
>[ 1351.067068] intel_engines_park 	RING_TAIL:  0x00000278 [0x00000000]
>[ 1351.067072] intel_engines_park 	RING_CTL:   0x00003000
>[ 1351.067076] intel_engines_park 	RING_MODE:  0x00000200 [idle]
>[ 1351.067082] intel_engines_park 	ACTHD:  0x00000000_00000278
>[ 1351.067087] intel_engines_park 	BBADDR: 0x00000000_00000074
>[ 1351.067091] intel_engines_park 	Execlist status: 0x00000301 00000000
>[ 1351.067095] intel_engines_park 	Execlist CSB read 3 [3 cached], write 3 [3 from hws], interrupt posted? no
>[ 1351.067097] intel_engines_park 		ELSP[0] count=1, 
>[ 1351.067101] intel_engines_park rq: 5a00a9! [9:8] prio=0 @ 16248ms: arb_gpu_shader5[25222]/0
>[ 1351.067103] intel_engines_park 		ELSP[1] idle
>[ 1351.067104] intel_engines_park 		HW active? 0x1
>[ 1351.067106] intel_engines_park Idle? no
>[ 1351.067108] intel_engines_park 
>[ 1364.767097] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[ 2056.942256] gl-1.0-front-in[27928]: segfault at 74 ip 00007f937633a47d sp 00007ffc7c203c20 error 4 in i965_dri.so[7f9375f57000+80b000]
>[ 2057.136449] gl-1.0-swapbuff[27936]: segfault at 74 ip 00007f6eafef947d sp 00007ffdfce28350 error 4 in i965_dri.so[7f6eafb16000+80b000]
>[ 2057.432750] drawbuffer-mode[27959]: segfault at 74 ip 00007f18226f247d sp 00007fff8001b280 error 4 in i965_dri.so[7f182230f000+80b000]
>[ 2057.832800] read-front[27980]: segfault at 44 ip 00007f3a556c9521 sp 00007fffb3b22380 error 4 in i965_dri.so[7f3a552af000+80b000]
>[ 2058.115745] read-front[27998]: segfault at 74 ip 00007f27702893b7 sp 00007ffee335c410 error 4 in i965_dri.so[7f276fe74000+80b000]
>[ 2058.345238] read-front[28010]: segfault at 74 ip 00007f99b12c33b7 sp 00007ffe89a2dcd0 error 4 in i965_dri.so[7f99b0eae000+80b000]
>[ 2058.662143] read-front[28032]: segfault at 74 ip 00007fc814bcb3b7 sp 00007ffc429dd280 error 4 in i965_dri.so[7fc8147b6000+80b000]
>[ 2058.978045] read-front[28052]: segfault at 74 ip 00007f251a7623b7 sp 00007fff731c1350 error 4 in i965_dri.so[7f251a34d000+80b000]
>[ 2059.292149] read-front[28068]: segfault at 74 ip 00007f79c4a0b3b7 sp 00007ffc86dcca60 error 4 in i965_dri.so[7f79c45f6000+80b000]
>[ 2059.632812] read-front[28092]: segfault at 74 ip 00007f831f62a47d sp 00007ffc420e0710 error 4 in i965_dri.so[7f831f247000+80b000]
>[ 2073.423004] show_signal_msg: 5 callbacks suppressed
>[ 2073.423008] gl30basic[28721]: segfault at 74 ip 00007f57bfe9147d sp 00007ffc2fd2deb0 error 4 in i965_dri.so[7f57bfaae000+80b000]
>[ 2112.639260] fbo-sys-blit[30138]: segfault at 208 ip 00007f6ecac09d78 sp 00007ffced2be410 error 4 in i965_dri.so[7f6eca7f1000+80b000]
>[ 2112.867545] fbo-sys-sub-bli[30147]: segfault at 208 ip 00007f1c73867d78 sp 00007fffc750e6a0 error 4 in i965_dri.so[7f1c7344f000+80b000]
>[ 2193.387322] fcc-front-buffe[32136]: segfault at 74 ip 00007f45fc2fc47d sp 00007fffc4e954e0 error 4 in i965_dri.so[7f45fbf19000+80b000]
>[ 3003.723889] masked-clear[15646]: segfault at 74 ip 00007f406f63e47d sp 00007ffd0168af40 error 4 in i965_dri.so[7f406f25b000+80b000]
>[ 3118.751177] i915 0000:00:02.0: Resetting rcs0 after gpu hang
>[ 3318.751313] i915 0000:00:02.0: Resetting bcs0 after gpu hang
>[ 3318.751337] BUG: unable to handle kernel paging request at 00000000fffffffc
>[ 3318.751371] IP: execlists_cancel_port_requests+0x36/0x60
>[ 3318.751389] PGD 0 P4D 0 
>[ 3318.751401] Oops: 0002 [#1] PREEMPT SMP
>[ 3318.751416] Modules linked in:
>[ 3318.751429] CPU: 2 PID: 28008 Comm: kworker/2:1 Not tainted 4.14.0cnl_staging+ #20
>[ 3318.751454] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3318.751495] Workqueue: events_long i915_hangcheck_elapsed
>[ 3318.751514] task: ffff880263c60000 task.stack: ffffc900015ac000
>[ 3318.751535] RIP: 0010:execlists_cancel_port_requests+0x36/0x60
>[ 3318.751555] RSP: 0018:ffffc900015afba0 EFLAGS: 00010006
>[ 3318.751573] RAX: 0000000000000001 RBX: ffff8802672542e0 RCX: 0000000000000001
>[ 3318.751595] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 00000000fffffffc
>[ 3318.751618] RBP: ffffc900015afbb0 R08: 0000000000000002 R09: 00000000000001f4
>[ 3318.751642] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8802672542f0
>[ 3318.751665] R13: 0000000000000246 R14: 0000000000000000 R15: ffff880267254000
>[ 3318.751689] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3318.751715] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3318.751734] CR2: 00000000fffffffc CR3: 000000000240b005 CR4: 00000000006606e0
>[ 3318.751757] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3318.751780] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3318.751803] PKRU: 55555554
>[ 3318.751813] Call Trace:
>[ 3318.751826]  reset_common_ring+0x30/0x100
>[ 3318.751842]  i915_gem_reset_engine+0x11a/0x330
>[ 3318.751859]  ? intel_gpu_reset+0x1c3/0x1e0
>[ 3318.751874]  ? gen6_reset_engines+0x90/0x90
>[ 3318.751890]  i915_reset_engine+0xdb/0x120
>[ 3318.751905]  i915_handle_error+0x1fe/0x3d0
>[ 3318.751922]  ? vsnprintf+0xd0/0x4b0
>[ 3318.751935]  ? scnprintf+0x3a/0x70
>[ 3318.751949]  hangcheck_declare_hang+0xd3/0xf0
>[ 3318.751966]  ? intel_runtime_pm_put+0x56/0xa0
>[ 3318.751982]  i915_hangcheck_elapsed+0x252/0x2c0
>[ 3318.752000]  process_one_work+0x17a/0x420
>[ 3318.752015]  worker_thread+0x3d/0x3b0
>[ 3318.752029]  kthread+0x12f/0x150
>[ 3318.752042]  ? process_one_work+0x420/0x420
>[ 3318.752057]  ? kthread_create_on_node+0x40/0x40
>[ 3318.752074]  ret_from_fork+0x25/0x30
>[ 3318.752088] Code: 74 48 55 48 89 e5 41 54 53 48 8d 5f 60 48 8b 7f 60 48 85 ff 74 2f 4c 8d 64 c3 08 eb 08 48 8b 3b 48 85 ff 74 20 48 83 e7 fc 74 0a <f0> ff 0f 75 05 e8 a0 57 0c 00 48 c7 03 00 00 00 00 48 83 c3 08 
>[ 3318.752173] RIP: execlists_cancel_port_requests+0x36/0x60 RSP: ffffc900015afba0
>[ 3318.752196] CR2: 00000000fffffffc
>[ 3318.752209] ---[ end trace bc1d0ac8f16a8078 ]---
>[ 3318.798188] BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:34
>[ 3318.798219] in_atomic(): 1, irqs_disabled(): 1, pid: 28008, name: kworker/2:1
>[ 3318.798242] Preemption disabled at:
>[ 3318.798247] [<ffffffff817105c1>] reset_common_ring+0x21/0x100
>[ 3318.798279] CPU: 2 PID: 28008 Comm: kworker/2:1 Tainted: G      D         4.14.0cnl_staging+ #20
>[ 3318.798307] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3318.798349] Workqueue: events_long i915_hangcheck_elapsed
>[ 3318.798367] Call Trace:
>[ 3318.798380]  dump_stack+0x65/0x8e
>[ 3318.798393]  ? reset_common_ring+0x21/0x100
>[ 3318.798410]  ___might_sleep+0x128/0x180
>[ 3318.798425]  __might_sleep+0x4a/0x80
>[ 3318.798440]  exit_signals+0x24/0x230
>[ 3318.798454]  do_exit+0xa2/0xbe0
>[ 3318.798467]  ? kthread+0x12f/0x150
>[ 3318.798480]  ? process_one_work+0x420/0x420
>[ 3318.798496]  rewind_stack_do_exit+0x17/0x20
>[ 3318.798527] note: kworker/2:1[28008] exited with preempt_count 1
>[ 3342.461920] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 3342.461953] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=5250 
>[ 3342.461981] 	(detected by 3, t=21002 jiffies, g=605158, c=605157, q=179)
>[ 3342.462006] Sending NMI from CPU 3 to CPUs 2:
>[ 3342.462024] NMI backtrace for cpu 2
>[ 3342.462027] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 3342.462028] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3342.462033] Workqueue: i915 i915_gem_retire_work_handler
>[ 3342.462034] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 3342.462038] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 3342.462039] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 3342.462040] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 3342.462040] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 3342.462041] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 3342.462041] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 3342.462042] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 3342.462043] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3342.462043] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3342.462044] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 3342.462045] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3342.462045] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3342.462045] PKRU: 55555554
>[ 3342.462046] Call Trace:
>[ 3342.462049]  do_raw_spin_lock+0xb2/0xc0
>[ 3342.462053]  _raw_spin_lock_irq+0x26/0x30
>[ 3342.462056]  i915_gem_retire_requests+0x73/0x1a0
>[ 3342.462058]  ? finish_task_switch+0x9f/0x240
>[ 3342.462060]  i915_gem_retire_work_handler+0x97/0xb0
>[ 3342.462062]  process_one_work+0x17a/0x420
>[ 3342.462063]  worker_thread+0x3d/0x3b0
>[ 3342.462065]  kthread+0x12f/0x150
>[ 3342.462065]  ? process_one_work+0x420/0x420
>[ 3342.462067]  ? kthread_create_on_node+0x40/0x40
>[ 3342.462068]  ret_from_fork+0x25/0x30
>[ 3342.462069] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 3405.466919] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 3405.510742] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=20993 
>[ 3405.513052] 	(detected by 0, t=84052 jiffies, g=605158, c=605157, q=1050)
>[ 3405.515371] Sending NMI from CPU 0 to CPUs 2:
>[ 3405.517680] NMI backtrace for cpu 2
>[ 3405.517683] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 3405.517684] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3405.517690] Workqueue: i915 i915_gem_retire_work_handler
>[ 3405.517691] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 3405.517695] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 3405.517696] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 3405.517697] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 3405.517698] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 3405.517698] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 3405.517699] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 3405.517700] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 3405.517701] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3405.517702] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3405.517703] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 3405.517704] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3405.517704] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3405.517705] PKRU: 55555554
>[ 3405.517705] Call Trace:
>[ 3405.517710]  do_raw_spin_lock+0xb2/0xc0
>[ 3405.517713]  _raw_spin_lock_irq+0x26/0x30
>[ 3405.517716]  i915_gem_retire_requests+0x73/0x1a0
>[ 3405.517719]  ? finish_task_switch+0x9f/0x240
>[ 3405.517721]  i915_gem_retire_work_handler+0x97/0xb0
>[ 3405.517723]  process_one_work+0x17a/0x420
>[ 3405.517725]  worker_thread+0x3d/0x3b0
>[ 3405.517727]  kthread+0x12f/0x150
>[ 3405.517728]  ? process_one_work+0x420/0x420
>[ 3405.517730]  ? kthread_create_on_node+0x40/0x40
>[ 3405.517731]  ret_from_fork+0x25/0x30
>[ 3405.517733] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 3468.471917] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 3468.473719] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=36574 
>[ 3468.475513] 	(detected by 0, t=147015 jiffies, g=605158, c=605157, q=2248)
>[ 3468.477307] Sending NMI from CPU 0 to CPUs 2:
>[ 3468.479094] NMI backtrace for cpu 2
>[ 3468.479097] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 3468.479098] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3468.479103] Workqueue: i915 i915_gem_retire_work_handler
>[ 3468.479104] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 3468.479109] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 3468.479109] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 3468.479110] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 3468.479111] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 3468.479112] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 3468.479112] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 3468.479113] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 3468.479114] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3468.479115] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3468.479116] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 3468.479117] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3468.479118] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3468.479118] PKRU: 55555554
>[ 3468.479119] Call Trace:
>[ 3468.479123]  do_raw_spin_lock+0xb2/0xc0
>[ 3468.479127]  _raw_spin_lock_irq+0x26/0x30
>[ 3468.479129]  i915_gem_retire_requests+0x73/0x1a0
>[ 3468.479133]  ? finish_task_switch+0x9f/0x240
>[ 3468.479135]  i915_gem_retire_work_handler+0x97/0xb0
>[ 3468.479137]  process_one_work+0x17a/0x420
>[ 3468.479138]  worker_thread+0x3d/0x3b0
>[ 3468.479140]  kthread+0x12f/0x150
>[ 3468.479141]  ? process_one_work+0x420/0x420
>[ 3468.479143]  ? kthread_create_on_node+0x40/0x40
>[ 3468.479144]  ret_from_fork+0x25/0x30
>[ 3468.479146] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 3531.476916] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 3531.551813] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=52042 
>[ 3531.554309] 	(detected by 0, t=210092 jiffies, g=605158, c=605157, q=2810)
>[ 3531.556808] Sending NMI from CPU 0 to CPUs 2:
>[ 3531.559305] NMI backtrace for cpu 2
>[ 3531.559308] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 3531.559308] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3531.559314] Workqueue: i915 i915_gem_retire_work_handler
>[ 3531.559315] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 3531.559319] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 3531.559319] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 3531.559320] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 3531.559321] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 3531.559322] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 3531.559323] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 3531.559324] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 3531.559325] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3531.559326] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3531.559326] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 3531.559328] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3531.559328] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3531.559329] PKRU: 55555554
>[ 3531.559329] Call Trace:
>[ 3531.559333]  do_raw_spin_lock+0xb2/0xc0
>[ 3531.559337]  _raw_spin_lock_irq+0x26/0x30
>[ 3531.559340]  i915_gem_retire_requests+0x73/0x1a0
>[ 3531.559343]  ? finish_task_switch+0x9f/0x240
>[ 3531.559345]  i915_gem_retire_work_handler+0x97/0xb0
>[ 3531.559347]  process_one_work+0x17a/0x420
>[ 3531.559348]  worker_thread+0x3d/0x3b0
>[ 3531.559350]  kthread+0x12f/0x150
>[ 3531.559351]  ? process_one_work+0x420/0x420
>[ 3531.559353]  ? kthread_create_on_node+0x40/0x40
>[ 3531.559354]  ret_from_fork+0x25/0x30
>[ 3531.559356] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 3594.481915] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 3594.562684] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=67488 
>[ 3594.565183] 	(detected by 1, t=273022 jiffies, g=605158, c=605157, q=3367)
>[ 3594.567689] Sending NMI from CPU 1 to CPUs 2:
>[ 3594.570185] NMI backtrace for cpu 2
>[ 3594.570187] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 3594.570188] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3594.570193] Workqueue: i915 i915_gem_retire_work_handler
>[ 3594.570194] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 3594.570198] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 3594.570198] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 3594.570199] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 3594.570200] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 3594.570200] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 3594.570201] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 3594.570201] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 3594.570202] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3594.570203] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3594.570204] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 3594.570205] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3594.570205] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3594.570205] PKRU: 55555554
>[ 3594.570206] Call Trace:
>[ 3594.570209]  do_raw_spin_lock+0xb2/0xc0
>[ 3594.570213]  _raw_spin_lock_irq+0x26/0x30
>[ 3594.570215]  i915_gem_retire_requests+0x73/0x1a0
>[ 3594.570218]  ? finish_task_switch+0x9f/0x240
>[ 3594.570220]  i915_gem_retire_work_handler+0x97/0xb0
>[ 3594.570222]  process_one_work+0x17a/0x420
>[ 3594.570223]  worker_thread+0x3d/0x3b0
>[ 3594.570225]  kthread+0x12f/0x150
>[ 3594.570226]  ? process_one_work+0x420/0x420
>[ 3594.570227]  ? kthread_create_on_node+0x40/0x40
>[ 3594.570228]  ret_from_fork+0x25/0x30
>[ 3594.570229] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 3657.486913] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 3657.567731] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=82779 
>[ 3657.570229] 	(detected by 1, t=336027 jiffies, g=605158, c=605157, q=4005)
>[ 3657.572728] Sending NMI from CPU 1 to CPUs 2:
>[ 3657.575229] NMI backtrace for cpu 2
>[ 3657.575231] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 3657.575232] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3657.575237] Workqueue: i915 i915_gem_retire_work_handler
>[ 3657.575238] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 3657.575242] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 3657.575242] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 3657.575243] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 3657.575244] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 3657.575244] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 3657.575245] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 3657.575246] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 3657.575247] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3657.575247] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3657.575248] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 3657.575249] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3657.575249] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3657.575249] PKRU: 55555554
>[ 3657.575250] Call Trace:
>[ 3657.575254]  do_raw_spin_lock+0xb2/0xc0
>[ 3657.575257]  _raw_spin_lock_irq+0x26/0x30
>[ 3657.575260]  i915_gem_retire_requests+0x73/0x1a0
>[ 3657.575263]  ? finish_task_switch+0x9f/0x240
>[ 3657.575264]  i915_gem_retire_work_handler+0x97/0xb0
>[ 3657.575266]  process_one_work+0x17a/0x420
>[ 3657.575268]  worker_thread+0x3d/0x3b0
>[ 3657.575269]  kthread+0x12f/0x150
>[ 3657.575271]  ? process_one_work+0x420/0x420
>[ 3657.575272]  ? kthread_create_on_node+0x40/0x40
>[ 3657.575273]  ret_from_fork+0x25/0x30
>[ 3657.575274] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 3720.491912] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 3720.572678] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=98083 
>[ 3720.575178] 	(detected by 1, t=399032 jiffies, g=605158, c=605157, q=4526)
>[ 3720.577669] Sending NMI from CPU 1 to CPUs 2:
>[ 3720.580171] NMI backtrace for cpu 2
>[ 3720.580174] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 3720.580174] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3720.580180] Workqueue: i915 i915_gem_retire_work_handler
>[ 3720.580181] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 3720.580185] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 3720.580185] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 3720.580186] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 3720.580187] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 3720.580187] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 3720.580188] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 3720.580188] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 3720.580189] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3720.580190] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3720.580190] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 3720.580191] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3720.580192] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3720.580192] PKRU: 55555554
>[ 3720.580193] Call Trace:
>[ 3720.580196]  do_raw_spin_lock+0xb2/0xc0
>[ 3720.580200]  _raw_spin_lock_irq+0x26/0x30
>[ 3720.580202]  i915_gem_retire_requests+0x73/0x1a0
>[ 3720.580205]  ? finish_task_switch+0x9f/0x240
>[ 3720.580207]  i915_gem_retire_work_handler+0x97/0xb0
>[ 3720.580209]  process_one_work+0x17a/0x420
>[ 3720.580210]  worker_thread+0x3d/0x3b0
>[ 3720.580212]  kthread+0x12f/0x150
>[ 3720.580213]  ? process_one_work+0x420/0x420
>[ 3720.580214]  ? kthread_create_on_node+0x40/0x40
>[ 3720.580215]  ret_from_fork+0x25/0x30
>[ 3720.580216] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 3783.496910] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 3783.577543] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=113521 
>[ 3783.580044] 	(detected by 1, t=462037 jiffies, g=605158, c=605157, q=4997)
>[ 3783.582542] Sending NMI from CPU 1 to CPUs 2:
>[ 3783.585045] NMI backtrace for cpu 2
>[ 3783.585048] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 3783.585049] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3783.585054] Workqueue: i915 i915_gem_retire_work_handler
>[ 3783.585055] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 3783.585059] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 3783.585059] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 3783.585060] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 3783.585061] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 3783.585062] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 3783.585062] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 3783.585063] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 3783.585064] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3783.585064] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3783.585065] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 3783.585066] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3783.585066] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3783.585067] PKRU: 55555554
>[ 3783.585067] Call Trace:
>[ 3783.585070]  do_raw_spin_lock+0xb2/0xc0
>[ 3783.585074]  _raw_spin_lock_irq+0x26/0x30
>[ 3783.585077]  i915_gem_retire_requests+0x73/0x1a0
>[ 3783.585080]  ? finish_task_switch+0x9f/0x240
>[ 3783.585081]  i915_gem_retire_work_handler+0x97/0xb0
>[ 3783.585083]  process_one_work+0x17a/0x420
>[ 3783.585084]  worker_thread+0x3d/0x3b0
>[ 3783.585086]  kthread+0x12f/0x150
>[ 3783.585087]  ? process_one_work+0x420/0x420
>[ 3783.585088]  ? kthread_create_on_node+0x40/0x40
>[ 3783.585090]  ret_from_fork+0x25/0x30
>[ 3783.585091] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 3846.501909] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 3846.582527] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=128924 
>[ 3846.585024] 	(detected by 1, t=525042 jiffies, g=605158, c=605157, q=5508)
>[ 3846.587520] Sending NMI from CPU 1 to CPUs 2:
>[ 3846.590029] NMI backtrace for cpu 2
>[ 3846.590031] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 3846.590032] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3846.590037] Workqueue: i915 i915_gem_retire_work_handler
>[ 3846.590038] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 3846.590042] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 3846.590043] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 3846.590044] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 3846.590044] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 3846.590045] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 3846.590045] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 3846.590046] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 3846.590047] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3846.590048] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3846.590048] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 3846.590049] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3846.590050] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3846.590050] PKRU: 55555554
>[ 3846.590050] Call Trace:
>[ 3846.590054]  do_raw_spin_lock+0xb2/0xc0
>[ 3846.590057]  _raw_spin_lock_irq+0x26/0x30
>[ 3846.590060]  i915_gem_retire_requests+0x73/0x1a0
>[ 3846.590063]  ? finish_task_switch+0x9f/0x240
>[ 3846.590065]  i915_gem_retire_work_handler+0x97/0xb0
>[ 3846.590066]  process_one_work+0x17a/0x420
>[ 3846.590068]  worker_thread+0x3d/0x3b0
>[ 3846.590069]  kthread+0x12f/0x150
>[ 3846.590070]  ? process_one_work+0x420/0x420
>[ 3846.590072]  ? kthread_create_on_node+0x40/0x40
>[ 3846.590073]  ret_from_fork+0x25/0x30
>[ 3846.590074] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 3909.506906] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 3909.587695] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=144459 
>[ 3909.590189] 	(detected by 1, t=588047 jiffies, g=605158, c=605157, q=6190)
>[ 3909.592694] Sending NMI from CPU 1 to CPUs 2:
>[ 3909.595193] NMI backtrace for cpu 2
>[ 3909.595196] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 3909.595197] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3909.595203] Workqueue: i915 i915_gem_retire_work_handler
>[ 3909.595204] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 3909.595207] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 3909.595208] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 3909.595209] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 3909.595209] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 3909.595210] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 3909.595210] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 3909.595211] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 3909.595212] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3909.595213] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3909.595213] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 3909.595214] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3909.595215] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3909.595215] PKRU: 55555554
>[ 3909.595215] Call Trace:
>[ 3909.595219]  do_raw_spin_lock+0xb2/0xc0
>[ 3909.595222]  _raw_spin_lock_irq+0x26/0x30
>[ 3909.595225]  i915_gem_retire_requests+0x73/0x1a0
>[ 3909.595228]  ? finish_task_switch+0x9f/0x240
>[ 3909.595229]  i915_gem_retire_work_handler+0x97/0xb0
>[ 3909.595231]  process_one_work+0x17a/0x420
>[ 3909.595232]  worker_thread+0x3d/0x3b0
>[ 3909.595234]  kthread+0x12f/0x150
>[ 3909.595235]  ? process_one_work+0x420/0x420
>[ 3909.595237]  ? kthread_create_on_node+0x40/0x40
>[ 3909.595238]  ret_from_fork+0x25/0x30
>[ 3909.595239] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 3972.511905] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 3972.592742] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=160189 
>[ 3972.595238] 	(detected by 1, t=651052 jiffies, g=605158, c=605157, q=6686)
>[ 3972.597730] Sending NMI from CPU 1 to CPUs 2:
>[ 3972.600226] NMI backtrace for cpu 2
>[ 3972.600229] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 3972.600230] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 3972.600235] Workqueue: i915 i915_gem_retire_work_handler
>[ 3972.600236] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 3972.600240] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 3972.600241] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 3972.600242] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 3972.600242] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 3972.600243] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 3972.600243] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 3972.600244] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 3972.600245] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 3972.600246] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 3972.600246] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 3972.600247] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 3972.600248] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 3972.600248] PKRU: 55555554
>[ 3972.600249] Call Trace:
>[ 3972.600252]  do_raw_spin_lock+0xb2/0xc0
>[ 3972.600256]  _raw_spin_lock_irq+0x26/0x30
>[ 3972.600258]  i915_gem_retire_requests+0x73/0x1a0
>[ 3972.600261]  ? finish_task_switch+0x9f/0x240
>[ 3972.600263]  i915_gem_retire_work_handler+0x97/0xb0
>[ 3972.600264]  process_one_work+0x17a/0x420
>[ 3972.600266]  worker_thread+0x3d/0x3b0
>[ 3972.600267]  kthread+0x12f/0x150
>[ 3972.600268]  ? process_one_work+0x420/0x420
>[ 3972.600270]  ? kthread_create_on_node+0x40/0x40
>[ 3972.600271]  ret_from_fork+0x25/0x30
>[ 3972.600272] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4035.516903] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4035.597720] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=175919 
>[ 4035.600219] 	(detected by 1, t=714057 jiffies, g=605158, c=605157, q=7172)
>[ 4035.602734] Sending NMI from CPU 1 to CPUs 2:
>[ 4035.605240] NMI backtrace for cpu 2
>[ 4035.605242] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4035.605243] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4035.605248] Workqueue: i915 i915_gem_retire_work_handler
>[ 4035.605250] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4035.605253] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4035.605253] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4035.605254] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4035.605255] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4035.605255] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4035.605256] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4035.605257] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4035.605258] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4035.605258] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4035.605259] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4035.605260] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4035.605260] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4035.605261] PKRU: 55555554
>[ 4035.605261] Call Trace:
>[ 4035.605265]  do_raw_spin_lock+0xb2/0xc0
>[ 4035.605268]  _raw_spin_lock_irq+0x26/0x30
>[ 4035.605271]  i915_gem_retire_requests+0x73/0x1a0
>[ 4035.605274]  ? finish_task_switch+0x9f/0x240
>[ 4035.605275]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4035.605277]  process_one_work+0x17a/0x420
>[ 4035.605278]  worker_thread+0x3d/0x3b0
>[ 4035.605280]  kthread+0x12f/0x150
>[ 4035.605281]  ? process_one_work+0x420/0x420
>[ 4035.605283]  ? kthread_create_on_node+0x40/0x40
>[ 4035.605284]  ret_from_fork+0x25/0x30
>[ 4035.605285] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4098.521901] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4098.580798] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=191663 
>[ 4098.582624] 	(detected by 3, t=777122 jiffies, g=605158, c=605157, q=7752)
>[ 4098.584454] Sending NMI from CPU 3 to CPUs 2:
>[ 4098.586283] NMI backtrace for cpu 2
>[ 4098.586285] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4098.586286] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4098.586291] Workqueue: i915 i915_gem_retire_work_handler
>[ 4098.586293] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4098.586296] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4098.586297] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4098.586298] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4098.586298] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4098.586299] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4098.586300] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4098.586300] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4098.586301] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4098.586302] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4098.586303] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4098.586304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4098.586304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4098.586305] PKRU: 55555554
>[ 4098.586305] Call Trace:
>[ 4098.586309]  do_raw_spin_lock+0xb2/0xc0
>[ 4098.586313]  _raw_spin_lock_irq+0x26/0x30
>[ 4098.586315]  i915_gem_retire_requests+0x73/0x1a0
>[ 4098.586318]  ? finish_task_switch+0x9f/0x240
>[ 4098.586320]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4098.586322]  process_one_work+0x17a/0x420
>[ 4098.586323]  worker_thread+0x3d/0x3b0
>[ 4098.586325]  kthread+0x12f/0x150
>[ 4098.586326]  ? process_one_work+0x420/0x420
>[ 4098.586328]  ? kthread_create_on_node+0x40/0x40
>[ 4098.586329]  ret_from_fork+0x25/0x30
>[ 4098.586330] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4161.526900] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4161.607602] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=207399 
>[ 4161.610096] 	(detected by 1, t=840067 jiffies, g=605158, c=605157, q=8227)
>[ 4161.612592] Sending NMI from CPU 1 to CPUs 2:
>[ 4161.615092] NMI backtrace for cpu 2
>[ 4161.615095] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4161.615096] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4161.615101] Workqueue: i915 i915_gem_retire_work_handler
>[ 4161.615102] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4161.615105] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4161.615106] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4161.615107] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4161.615107] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4161.615108] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4161.615108] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4161.615109] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4161.615110] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4161.615111] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4161.615111] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4161.615112] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4161.615112] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4161.615113] PKRU: 55555554
>[ 4161.615113] Call Trace:
>[ 4161.615117]  do_raw_spin_lock+0xb2/0xc0
>[ 4161.615120]  _raw_spin_lock_irq+0x26/0x30
>[ 4161.615123]  i915_gem_retire_requests+0x73/0x1a0
>[ 4161.615126]  ? finish_task_switch+0x9f/0x240
>[ 4161.615127]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4161.615129]  process_one_work+0x17a/0x420
>[ 4161.615130]  worker_thread+0x3d/0x3b0
>[ 4161.615132]  kthread+0x12f/0x150
>[ 4161.615133]  ? process_one_work+0x420/0x420
>[ 4161.615135]  ? kthread_create_on_node+0x40/0x40
>[ 4161.615136]  ret_from_fork+0x25/0x30
>[ 4161.615137] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4224.531897] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4224.590705] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=223143 
>[ 4224.592534] 	(detected by 3, t=903132 jiffies, g=605158, c=605157, q=8699)
>[ 4224.594366] Sending NMI from CPU 3 to CPUs 2:
>[ 4224.596198] NMI backtrace for cpu 2
>[ 4224.596200] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4224.596201] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4224.596207] Workqueue: i915 i915_gem_retire_work_handler
>[ 4224.596208] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4224.596211] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4224.596212] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4224.596213] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4224.596214] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4224.596214] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4224.596215] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4224.596216] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4224.596217] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4224.596217] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4224.596218] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4224.596219] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4224.596220] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4224.596220] PKRU: 55555554
>[ 4224.596221] Call Trace:
>[ 4224.596225]  do_raw_spin_lock+0xb2/0xc0
>[ 4224.596228]  _raw_spin_lock_irq+0x26/0x30
>[ 4224.596231]  i915_gem_retire_requests+0x73/0x1a0
>[ 4224.596234]  ? finish_task_switch+0x9f/0x240
>[ 4224.596236]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4224.596238]  process_one_work+0x17a/0x420
>[ 4224.596239]  worker_thread+0x3d/0x3b0
>[ 4224.596241]  kthread+0x12f/0x150
>[ 4224.596242]  ? process_one_work+0x420/0x420
>[ 4224.596243]  ? kthread_create_on_node+0x40/0x40
>[ 4224.596245]  ret_from_fork+0x25/0x30
>[ 4224.596246] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4266.070897] INFO: rcu_sched self-detected stall on CPU
>[ 4266.151713] 	1-...: (20999 ticks this GP) idle=fda/140000000000001/0 softirq=1920776/1920776 fqs=5249 
>[ 4266.154212] 	 (t=21000 jiffies g=320 c=319 q=4)
>[ 4266.156719] NMI backtrace for cpu 1
>[ 4266.159201] CPU: 1 PID: 19191 Comm: (d-logind) Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4266.161743] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4266.164334] Call Trace:
>[ 4266.166920]  <IRQ>
>[ 4266.169503]  dump_stack+0x65/0x8e
>[ 4266.172099]  nmi_cpu_backtrace+0xbe/0xc0
>[ 4266.174687]  ? irq_force_complete_move+0xe0/0xe0
>[ 4266.177288]  nmi_trigger_cpumask_backtrace+0xb0/0x100
>[ 4266.179877]  arch_trigger_cpumask_backtrace+0x19/0x20
>[ 4266.182476]  rcu_dump_cpu_stacks+0xa3/0xdc
>[ 4266.185076]  rcu_check_callbacks+0x6ca/0x970
>[ 4266.187692]  ? debug_smp_processor_id+0x17/0x20
>[ 4266.190289]  update_process_times+0x2f/0x60
>[ 4266.192893]  tick_sched_handle+0x39/0x50
>[ 4266.195500]  tick_sched_timer+0x39/0x80
>[ 4266.198029]  ? tick_sched_do_timer+0x50/0x50
>[ 4266.200496]  __hrtimer_run_queues+0xe4/0x280
>[ 4266.202942]  hrtimer_interrupt+0xb2/0x1e0
>[ 4266.205376]  ? x86_configure_nx+0x60/0x60
>[ 4266.207778]  smp_apic_timer_interrupt+0x6b/0x160
>[ 4266.210176]  apic_timer_interrupt+0x93/0xa0
>[ 4266.212567]  </IRQ>
>[ 4266.214918] RIP: 0010:smp_call_function_many+0x20e/0x240
>[ 4266.217230] RSP: 0018:ffffc90001a27c48 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
>[ 4266.219566] RAX: 0000000000000002 RBX: ffff88027109b840 RCX: 0000000000000001
>[ 4266.221896] RDX: ffff88027111f2e0 RSI: 0000000000000000 RDI: ffff88027109b848
>[ 4266.224253] RBP: ffffc90001a27c80 R08: fffffffffffffffe R09: 000000000000000d
>[ 4266.226603] R10: ffffc90001a27db0 R11: 0000000000000010 R12: ffff88027109b848
>[ 4266.228953] R13: 0000000000000008 R14: ffffffff810aa7e0 R15: 0000000000000000
>[ 4266.231310]  ? x86_configure_nx+0x60/0x60
>[ 4266.233665]  ? smp_call_function_many+0x1ea/0x240
>[ 4266.236014]  ? x86_configure_nx+0x60/0x60
>[ 4266.238342]  smp_call_function+0x3b/0x70
>[ 4266.240657]  ? x86_configure_nx+0x60/0x60
>[ 4266.242974]  on_each_cpu+0x2f/0x90
>[ 4266.245286]  flush_tlb_kernel_range+0x3c/0x60
>[ 4266.247605]  __purge_vmap_area_lazy+0x52/0xe0
>[ 4266.249896]  vm_unmap_aliases+0x10f/0x150
>[ 4266.252197]  change_page_attr_set_clr+0x283/0x420
>[ 4266.254505]  set_memory_ro+0x29/0x30
>[ 4266.256818]  bpf_prog_select_runtime+0x53/0xe0
>[ 4266.259131]  bpf_prepare_filter+0x37e/0x3a0
>[ 4266.261443]  bpf_prog_create_from_user+0x9a/0x100
>[ 4266.263759]  ? kdb_kbd_cleanup_state+0x40/0x40
>[ 4266.266070]  do_seccomp+0x211/0x690
>[ 4266.268383]  SyS_seccomp+0xe/0x10
>[ 4266.270700]  entry_SYSCALL_64_fastpath+0x1a/0xa5
>[ 4266.273016] RIP: 0033:0x7ff0e983f539
>[ 4266.275326] RSP: 002b:00007fffa254eee8 EFLAGS: 00000246 ORIG_RAX: 000000000000013d
>[ 4266.277672] RAX: ffffffffffffffda RBX: 000000000000013d RCX: 00007ff0e983f539
>[ 4266.279959] RDX: 000055e05c01a7e0 RSI: 0000000000000000 RDI: 0000000000000001
>[ 4266.282184] RBP: 000055e05c067fa0 R08: 000055e05c01a7e0 R09: 000000004000003e
>[ 4266.284386] R10: 0000000000000030 R11: 0000000000000246 R12: 000055e05bf234a0
>[ 4266.286569] R13: 00007fffa254ef38 R14: 00007fffa254ef40 R15: 00007ff0eafad854
>[ 4266.288760] Sending NMI from CPU 1 to CPUs 2:
>[ 4266.290944] NMI backtrace for cpu 2
>[ 4266.290946] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4266.290946] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4266.290951] Workqueue: i915 i915_gem_retire_work_handler
>[ 4266.290952] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4266.290955] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4266.290956] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4266.290956] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4266.290957] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4266.290958] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4266.290958] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4266.290959] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4266.290960] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4266.290960] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4266.290961] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4266.290962] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4266.290962] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4266.290963] PKRU: 55555554
>[ 4266.290963] Call Trace:
>[ 4266.290966]  do_raw_spin_lock+0xb2/0xc0
>[ 4266.290969]  _raw_spin_lock_irq+0x26/0x30
>[ 4266.290971]  i915_gem_retire_requests+0x73/0x1a0
>[ 4266.290974]  ? finish_task_switch+0x9f/0x240
>[ 4266.290976]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4266.290977]  process_one_work+0x17a/0x420
>[ 4266.290978]  worker_thread+0x3d/0x3b0
>[ 4266.290980]  kthread+0x12f/0x150
>[ 4266.290981]  ? process_one_work+0x420/0x420
>[ 4266.290983]  ? kthread_create_on_node+0x40/0x40
>[ 4266.290984]  ret_from_fork+0x25/0x30
>[ 4266.290985] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4287.536896] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4287.587693] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=238831 
>[ 4287.589277] 	(detected by 3, t=966129 jiffies, g=605158, c=605157, q=10886)
>[ 4287.590884] Sending NMI from CPU 3 to CPUs 2:
>[ 4287.592472] NMI backtrace for cpu 2
>[ 4287.592475] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4287.592475] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4287.592481] Workqueue: i915 i915_gem_retire_work_handler
>[ 4287.592482] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4287.592485] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4287.592486] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4287.592487] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4287.592488] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4287.592488] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4287.592489] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4287.592489] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4287.592490] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4287.592491] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4287.592492] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4287.592493] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4287.592493] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4287.592493] PKRU: 55555554
>[ 4287.592494] Call Trace:
>[ 4287.592498]  do_raw_spin_lock+0xb2/0xc0
>[ 4287.592501]  _raw_spin_lock_irq+0x26/0x30
>[ 4287.592504]  i915_gem_retire_requests+0x73/0x1a0
>[ 4287.592507]  ? finish_task_switch+0x9f/0x240
>[ 4287.592508]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4287.592510]  process_one_work+0x17a/0x420
>[ 4287.592511]  worker_thread+0x3d/0x3b0
>[ 4287.592513]  kthread+0x12f/0x150
>[ 4287.592514]  ? process_one_work+0x420/0x420
>[ 4287.592516]  ? kthread_create_on_node+0x40/0x40
>[ 4287.592517]  ret_from_fork+0x25/0x30
>[ 4287.592518] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4329.073895] INFO: rcu_sched self-detected stall on CPU
>[ 4329.145337] 	1-...: (83782 ticks this GP) idle=fda/140000000000001/0 softirq=1920776/1920776 fqs=20944 
>[ 4329.147704] 	 (t=84003 jiffies g=320 c=319 q=4)
>[ 4329.150098] NMI backtrace for cpu 1
>[ 4329.152471] CPU: 1 PID: 19191 Comm: (d-logind) Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4329.154875] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4329.157343] Call Trace:
>[ 4329.159811]  <IRQ>
>[ 4329.162267]  dump_stack+0x65/0x8e
>[ 4329.164714]  nmi_cpu_backtrace+0xbe/0xc0
>[ 4329.167169]  ? irq_force_complete_move+0xe0/0xe0
>[ 4329.169627]  nmi_trigger_cpumask_backtrace+0xb0/0x100
>[ 4329.172092]  arch_trigger_cpumask_backtrace+0x19/0x20
>[ 4329.174552]  rcu_dump_cpu_stacks+0xa3/0xdc
>[ 4329.177018]  rcu_check_callbacks+0x6ca/0x970
>[ 4329.179485]  ? debug_smp_processor_id+0x17/0x20
>[ 4329.181953]  update_process_times+0x2f/0x60
>[ 4329.184406]  tick_sched_handle+0x39/0x50
>[ 4329.186837]  tick_sched_timer+0x39/0x80
>[ 4329.189262]  ? tick_sched_do_timer+0x50/0x50
>[ 4329.191699]  __hrtimer_run_queues+0xe4/0x280
>[ 4329.194113]  hrtimer_interrupt+0xb2/0x1e0
>[ 4329.196526]  ? x86_configure_nx+0x60/0x60
>[ 4329.198921]  smp_apic_timer_interrupt+0x6b/0x160
>[ 4329.201320]  apic_timer_interrupt+0x93/0xa0
>[ 4329.203701]  </IRQ>
>[ 4329.206036] RIP: 0010:smp_call_function_many+0x20e/0x240
>[ 4329.208346] RSP: 0018:ffffc90001a27c48 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
>[ 4329.210674] RAX: 0000000000000002 RBX: ffff88027109b840 RCX: 0000000000000001
>[ 4329.213029] RDX: ffff88027111f2e0 RSI: 0000000000000000 RDI: ffff88027109b848
>[ 4329.215367] RBP: ffffc90001a27c80 R08: fffffffffffffffe R09: 000000000000000d
>[ 4329.217713] R10: ffffc90001a27db0 R11: 0000000000000010 R12: ffff88027109b848
>[ 4329.220051] R13: 0000000000000008 R14: ffffffff810aa7e0 R15: 0000000000000000
>[ 4329.222402]  ? x86_configure_nx+0x60/0x60
>[ 4329.224749]  ? smp_call_function_many+0x1ea/0x240
>[ 4329.227102]  ? x86_configure_nx+0x60/0x60
>[ 4329.229425]  smp_call_function+0x3b/0x70
>[ 4329.231742]  ? x86_configure_nx+0x60/0x60
>[ 4329.234044]  on_each_cpu+0x2f/0x90
>[ 4329.236341]  flush_tlb_kernel_range+0x3c/0x60
>[ 4329.238657]  __purge_vmap_area_lazy+0x52/0xe0
>[ 4329.240952]  vm_unmap_aliases+0x10f/0x150
>[ 4329.243261]  change_page_attr_set_clr+0x283/0x420
>[ 4329.245579]  set_memory_ro+0x29/0x30
>[ 4329.247899]  bpf_prog_select_runtime+0x53/0xe0
>[ 4329.250218]  bpf_prepare_filter+0x37e/0x3a0
>[ 4329.252525]  bpf_prog_create_from_user+0x9a/0x100
>[ 4329.254852]  ? kdb_kbd_cleanup_state+0x40/0x40
>[ 4329.257170]  do_seccomp+0x211/0x690
>[ 4329.259492]  SyS_seccomp+0xe/0x10
>[ 4329.261811]  entry_SYSCALL_64_fastpath+0x1a/0xa5
>[ 4329.264132] RIP: 0033:0x7ff0e983f539
>[ 4329.266450] RSP: 002b:00007fffa254eee8 EFLAGS: 00000246 ORIG_RAX: 000000000000013d
>[ 4329.268792] RAX: ffffffffffffffda RBX: 000000000000013d RCX: 00007ff0e983f539
>[ 4329.271072] RDX: 000055e05c01a7e0 RSI: 0000000000000000 RDI: 0000000000000001
>[ 4329.273299] RBP: 000055e05c067fa0 R08: 000055e05c01a7e0 R09: 000000004000003e
>[ 4329.275499] R10: 0000000000000030 R11: 0000000000000246 R12: 000055e05bf234a0
>[ 4329.277693] R13: 00007fffa254ef38 R14: 00007fffa254ef40 R15: 00007ff0eafad854
>[ 4329.279872] Sending NMI from CPU 1 to CPUs 2:
>[ 4329.282054] NMI backtrace for cpu 2
>[ 4329.282056] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4329.282056] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4329.282061] Workqueue: i915 i915_gem_retire_work_handler
>[ 4329.282062] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4329.282065] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4329.282066] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4329.282067] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4329.282067] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4329.282068] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4329.282068] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4329.282069] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4329.282070] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4329.282070] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4329.282071] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4329.282072] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4329.282072] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4329.282073] PKRU: 55555554
>[ 4329.282073] Call Trace:
>[ 4329.282076]  do_raw_spin_lock+0xb2/0xc0
>[ 4329.282079]  _raw_spin_lock_irq+0x26/0x30
>[ 4329.282081]  i915_gem_retire_requests+0x73/0x1a0
>[ 4329.282084]  ? finish_task_switch+0x9f/0x240
>[ 4329.282085]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4329.282087]  process_one_work+0x17a/0x420
>[ 4329.282088]  worker_thread+0x3d/0x3b0
>[ 4329.282090]  kthread+0x12f/0x150
>[ 4329.282091]  ? process_one_work+0x420/0x420
>[ 4329.282093]  ? kthread_create_on_node+0x40/0x40
>[ 4329.282094]  ret_from_fork+0x25/0x30
>[ 4329.282095] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4350.541895] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4350.611529] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=254517 
>[ 4350.613720] 	(detected by 1, t=1029082 jiffies, g=605158, c=605157, q=11752)
>[ 4350.615909] Sending NMI from CPU 1 to CPUs 2:
>[ 4350.618091] NMI backtrace for cpu 2
>[ 4350.618093] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4350.618094] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4350.618099] Workqueue: i915 i915_gem_retire_work_handler
>[ 4350.618100] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4350.618104] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4350.618104] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4350.618105] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4350.618106] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4350.618106] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4350.618107] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4350.618107] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4350.618109] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4350.618109] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4350.618110] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4350.618111] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4350.618111] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4350.618112] PKRU: 55555554
>[ 4350.618112] Call Trace:
>[ 4350.618116]  do_raw_spin_lock+0xb2/0xc0
>[ 4350.618119]  _raw_spin_lock_irq+0x26/0x30
>[ 4350.618122]  i915_gem_retire_requests+0x73/0x1a0
>[ 4350.618125]  ? finish_task_switch+0x9f/0x240
>[ 4350.618126]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4350.618128]  process_one_work+0x17a/0x420
>[ 4350.618129]  worker_thread+0x3d/0x3b0
>[ 4350.618131]  kthread+0x12f/0x150
>[ 4350.618132]  ? process_one_work+0x420/0x420
>[ 4350.618133]  ? kthread_create_on_node+0x40/0x40
>[ 4350.618135]  ret_from_fork+0x25/0x30
>[ 4350.618136] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4392.076894] INFO: rcu_sched self-detected stall on CPU
>[ 4392.148254] 	1-...: (146501 ticks this GP) idle=fda/140000000000001/0 softirq=1920776/1920776 fqs=36622 
>[ 4392.150614] 	 (t=147006 jiffies g=320 c=319 q=4)
>[ 4392.152979] NMI backtrace for cpu 1
>[ 4392.155343] CPU: 1 PID: 19191 Comm: (d-logind) Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4392.157754] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4392.160222] Call Trace:
>[ 4392.162685]  <IRQ>
>[ 4392.165140]  dump_stack+0x65/0x8e
>[ 4392.167581]  nmi_cpu_backtrace+0xbe/0xc0
>[ 4392.170030]  ? irq_force_complete_move+0xe0/0xe0
>[ 4392.172501]  nmi_trigger_cpumask_backtrace+0xb0/0x100
>[ 4392.174961]  arch_trigger_cpumask_backtrace+0x19/0x20
>[ 4392.177418]  rcu_dump_cpu_stacks+0xa3/0xdc
>[ 4392.179880]  rcu_check_callbacks+0x6ca/0x970
>[ 4392.182326]  ? debug_smp_processor_id+0x17/0x20
>[ 4392.184795]  update_process_times+0x2f/0x60
>[ 4392.187241]  tick_sched_handle+0x39/0x50
>[ 4392.189660]  tick_sched_timer+0x39/0x80
>[ 4392.192083]  ? tick_sched_do_timer+0x50/0x50
>[ 4392.194494]  __hrtimer_run_queues+0xe4/0x280
>[ 4392.196911]  hrtimer_interrupt+0xb2/0x1e0
>[ 4392.199324]  ? x86_configure_nx+0x60/0x60
>[ 4392.201703]  smp_apic_timer_interrupt+0x6b/0x160
>[ 4392.204107]  apic_timer_interrupt+0x93/0xa0
>[ 4392.206483]  </IRQ>
>[ 4392.208808] RIP: 0010:smp_call_function_many+0x20e/0x240
>[ 4392.211123] RSP: 0018:ffffc90001a27c48 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
>[ 4392.213438] RAX: 0000000000000002 RBX: ffff88027109b840 RCX: 0000000000000001
>[ 4392.215763] RDX: ffff88027111f2e0 RSI: 0000000000000000 RDI: ffff88027109b848
>[ 4392.218096] RBP: ffffc90001a27c80 R08: fffffffffffffffe R09: 000000000000000d
>[ 4392.220439] R10: ffffc90001a27db0 R11: 0000000000000010 R12: ffff88027109b848
>[ 4392.222781] R13: 0000000000000008 R14: ffffffff810aa7e0 R15: 0000000000000000
>[ 4392.225133]  ? x86_configure_nx+0x60/0x60
>[ 4392.227474]  ? smp_call_function_many+0x1ea/0x240
>[ 4392.229833]  ? x86_configure_nx+0x60/0x60
>[ 4392.232164]  smp_call_function+0x3b/0x70
>[ 4392.234470]  ? x86_configure_nx+0x60/0x60
>[ 4392.236769]  on_each_cpu+0x2f/0x90
>[ 4392.239073]  flush_tlb_kernel_range+0x3c/0x60
>[ 4392.241376]  __purge_vmap_area_lazy+0x52/0xe0
>[ 4392.243664]  vm_unmap_aliases+0x10f/0x150
>[ 4392.245969]  change_page_attr_set_clr+0x283/0x420
>[ 4392.248278]  set_memory_ro+0x29/0x30
>[ 4392.250584]  bpf_prog_select_runtime+0x53/0xe0
>[ 4392.252892]  bpf_prepare_filter+0x37e/0x3a0
>[ 4392.255203]  bpf_prog_create_from_user+0x9a/0x100
>[ 4392.257533]  ? kdb_kbd_cleanup_state+0x40/0x40
>[ 4392.259840]  do_seccomp+0x211/0x690
>[ 4392.262153]  SyS_seccomp+0xe/0x10
>[ 4392.264458]  entry_SYSCALL_64_fastpath+0x1a/0xa5
>[ 4392.266774] RIP: 0033:0x7ff0e983f539
>[ 4392.269084] RSP: 002b:00007fffa254eee8 EFLAGS: 00000246 ORIG_RAX: 000000000000013d
>[ 4392.271433] RAX: ffffffffffffffda RBX: 000000000000013d RCX: 00007ff0e983f539
>[ 4392.273715] RDX: 000055e05c01a7e0 RSI: 0000000000000000 RDI: 0000000000000001
>[ 4392.275931] RBP: 000055e05c067fa0 R08: 000055e05c01a7e0 R09: 000000004000003e
>[ 4392.278121] R10: 0000000000000030 R11: 0000000000000246 R12: 000055e05bf234a0
>[ 4392.280297] R13: 00007fffa254ef38 R14: 00007fffa254ef40 R15: 00007ff0eafad854
>[ 4392.282478] Sending NMI from CPU 1 to CPUs 2:
>[ 4392.284654] NMI backtrace for cpu 2
>[ 4392.284656] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4392.284656] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4392.284661] Workqueue: i915 i915_gem_retire_work_handler
>[ 4392.284662] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4392.284665] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4392.284666] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4392.284667] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4392.284667] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4392.284668] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4392.284668] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4392.284669] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4392.284670] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4392.284670] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4392.284671] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4392.284672] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4392.284672] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4392.284673] PKRU: 55555554
>[ 4392.284673] Call Trace:
>[ 4392.284676]  do_raw_spin_lock+0xb2/0xc0
>[ 4392.284679]  _raw_spin_lock_irq+0x26/0x30
>[ 4392.284681]  i915_gem_retire_requests+0x73/0x1a0
>[ 4392.284684]  ? finish_task_switch+0x9f/0x240
>[ 4392.284686]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4392.284688]  process_one_work+0x17a/0x420
>[ 4392.284689]  worker_thread+0x3d/0x3b0
>[ 4392.284691]  kthread+0x12f/0x150
>[ 4392.284692]  ? process_one_work+0x420/0x420
>[ 4392.284693]  ? kthread_create_on_node+0x40/0x40
>[ 4392.284694]  ret_from_fork+0x25/0x30
>[ 4392.284695] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4413.546893] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4413.616429] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=270198 
>[ 4413.618603] 	(detected by 1, t=1092087 jiffies, g=605158, c=605157, q=12391)
>[ 4413.620792] Sending NMI from CPU 1 to CPUs 2:
>[ 4413.622958] NMI backtrace for cpu 2
>[ 4413.622960] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4413.622961] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4413.622965] Workqueue: i915 i915_gem_retire_work_handler
>[ 4413.622967] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4413.622970] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4413.622970] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4413.622971] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4413.622972] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4413.622973] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4413.622973] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4413.622974] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4413.622975] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4413.622975] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4413.622976] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4413.622977] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4413.622977] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4413.622978] PKRU: 55555554
>[ 4413.622978] Call Trace:
>[ 4413.622982]  do_raw_spin_lock+0xb2/0xc0
>[ 4413.622984]  _raw_spin_lock_irq+0x26/0x30
>[ 4413.622987]  i915_gem_retire_requests+0x73/0x1a0
>[ 4413.622990]  ? finish_task_switch+0x9f/0x240
>[ 4413.622992]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4413.622993]  process_one_work+0x17a/0x420
>[ 4413.622995]  worker_thread+0x3d/0x3b0
>[ 4413.622997]  kthread+0x12f/0x150
>[ 4413.622998]  ? process_one_work+0x420/0x420
>[ 4413.622999]  ? kthread_create_on_node+0x40/0x40
>[ 4413.623000]  ret_from_fork+0x25/0x30
>[ 4413.623001] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4455.079892] INFO: rcu_sched self-detected stall on CPU
>[ 4455.151317] 	1-...: (209221 ticks this GP) idle=fda/140000000000001/0 softirq=1920776/1920776 fqs=52301 
>[ 4455.153675] 	 (t=210009 jiffies g=320 c=319 q=4)
>[ 4455.156050] NMI backtrace for cpu 1
>[ 4455.158410] CPU: 1 PID: 19191 Comm: (d-logind) Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4455.160812] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4455.163284] Call Trace:
>[ 4455.165742]  <IRQ>
>[ 4455.168181]  dump_stack+0x65/0x8e
>[ 4455.170641]  nmi_cpu_backtrace+0xbe/0xc0
>[ 4455.173080]  ? irq_force_complete_move+0xe0/0xe0
>[ 4455.175541]  nmi_trigger_cpumask_backtrace+0xb0/0x100
>[ 4455.178010]  arch_trigger_cpumask_backtrace+0x19/0x20
>[ 4455.180483]  rcu_dump_cpu_stacks+0xa3/0xdc
>[ 4455.182957]  rcu_check_callbacks+0x6ca/0x970
>[ 4455.185416]  ? debug_smp_processor_id+0x17/0x20
>[ 4455.187876]  update_process_times+0x2f/0x60
>[ 4455.190323]  tick_sched_handle+0x39/0x50
>[ 4455.192747]  tick_sched_timer+0x39/0x80
>[ 4455.195175]  ? tick_sched_do_timer+0x50/0x50
>[ 4455.197604]  __hrtimer_run_queues+0xe4/0x280
>[ 4455.200026]  hrtimer_interrupt+0xb2/0x1e0
>[ 4455.202430]  ? x86_configure_nx+0x60/0x60
>[ 4455.204826]  smp_apic_timer_interrupt+0x6b/0x160
>[ 4455.207237]  apic_timer_interrupt+0x93/0xa0
>[ 4455.209617]  </IRQ>
>[ 4455.211937] RIP: 0010:smp_call_function_many+0x20e/0x240
>[ 4455.214243] RSP: 0018:ffffc90001a27c48 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
>[ 4455.216569] RAX: 0000000000000002 RBX: ffff88027109b840 RCX: 0000000000000001
>[ 4455.218899] RDX: ffff88027111f2e0 RSI: 0000000000000000 RDI: ffff88027109b848
>[ 4455.221234] RBP: ffffc90001a27c80 R08: fffffffffffffffe R09: 000000000000000d
>[ 4455.223584] R10: ffffc90001a27db0 R11: 0000000000000010 R12: ffff88027109b848
>[ 4455.225919] R13: 0000000000000008 R14: ffffffff810aa7e0 R15: 0000000000000000
>[ 4455.228275]  ? x86_configure_nx+0x60/0x60
>[ 4455.230625]  ? smp_call_function_many+0x1ea/0x240
>[ 4455.232990]  ? x86_configure_nx+0x60/0x60
>[ 4455.235312]  smp_call_function+0x3b/0x70
>[ 4455.237625]  ? x86_configure_nx+0x60/0x60
>[ 4455.239926]  on_each_cpu+0x2f/0x90
>[ 4455.242235]  flush_tlb_kernel_range+0x3c/0x60
>[ 4455.244545]  __purge_vmap_area_lazy+0x52/0xe0
>[ 4455.246842]  vm_unmap_aliases+0x10f/0x150
>[ 4455.249141]  change_page_attr_set_clr+0x283/0x420
>[ 4455.251449]  set_memory_ro+0x29/0x30
>[ 4455.253777]  bpf_prog_select_runtime+0x53/0xe0
>[ 4455.256095]  bpf_prepare_filter+0x37e/0x3a0
>[ 4455.258431]  bpf_prog_create_from_user+0x9a/0x100
>[ 4455.260738]  ? kdb_kbd_cleanup_state+0x40/0x40
>[ 4455.263048]  do_seccomp+0x211/0x690
>[ 4455.265357]  SyS_seccomp+0xe/0x10
>[ 4455.267665]  entry_SYSCALL_64_fastpath+0x1a/0xa5
>[ 4455.269985] RIP: 0033:0x7ff0e983f539
>[ 4455.272300] RSP: 002b:00007fffa254eee8 EFLAGS: 00000246 ORIG_RAX: 000000000000013d
>[ 4455.274660] RAX: ffffffffffffffda RBX: 000000000000013d RCX: 00007ff0e983f539
>[ 4455.276944] RDX: 000055e05c01a7e0 RSI: 0000000000000000 RDI: 0000000000000001
>[ 4455.279160] RBP: 000055e05c067fa0 R08: 000055e05c01a7e0 R09: 000000004000003e
>[ 4455.281350] R10: 0000000000000030 R11: 0000000000000246 R12: 000055e05bf234a0
>[ 4455.283526] R13: 00007fffa254ef38 R14: 00007fffa254ef40 R15: 00007ff0eafad854
>[ 4455.285703] Sending NMI from CPU 1 to CPUs 2:
>[ 4455.287882] NMI backtrace for cpu 2
>[ 4455.287883] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4455.287884] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4455.287889] Workqueue: i915 i915_gem_retire_work_handler
>[ 4455.287890] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4455.287893] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4455.287894] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4455.287895] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4455.287896] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4455.287896] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4455.287897] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4455.287897] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4455.287898] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4455.287899] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4455.287900] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4455.287900] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4455.287901] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4455.287901] PKRU: 55555554
>[ 4455.287902] Call Trace:
>[ 4455.287905]  do_raw_spin_lock+0xb2/0xc0
>[ 4455.287907]  _raw_spin_lock_irq+0x26/0x30
>[ 4455.287910]  i915_gem_retire_requests+0x73/0x1a0
>[ 4455.287913]  ? finish_task_switch+0x9f/0x240
>[ 4455.287914]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4455.287916]  process_one_work+0x17a/0x420
>[ 4455.287917]  worker_thread+0x3d/0x3b0
>[ 4455.287919]  kthread+0x12f/0x150
>[ 4455.287920]  ? process_one_work+0x420/0x420
>[ 4455.287922]  ? kthread_create_on_node+0x40/0x40
>[ 4455.287923]  ret_from_fork+0x25/0x30
>[ 4455.287924] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4476.551892] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4476.621476] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=285878 
>[ 4476.623643] 	(detected by 1, t=1155092 jiffies, g=605158, c=605157, q=13050)
>[ 4476.625820] Sending NMI from CPU 1 to CPUs 2:
>[ 4476.627984] NMI backtrace for cpu 2
>[ 4476.627986] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4476.627987] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4476.627992] Workqueue: i915 i915_gem_retire_work_handler
>[ 4476.627993] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4476.627996] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4476.627997] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4476.627998] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4476.627998] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4476.627999] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4476.627999] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4476.628000] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4476.628001] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4476.628001] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4476.628002] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4476.628003] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4476.628003] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4476.628004] PKRU: 55555554
>[ 4476.628004] Call Trace:
>[ 4476.628008]  do_raw_spin_lock+0xb2/0xc0
>[ 4476.628011]  _raw_spin_lock_irq+0x26/0x30
>[ 4476.628013]  i915_gem_retire_requests+0x73/0x1a0
>[ 4476.628016]  ? finish_task_switch+0x9f/0x240
>[ 4476.628018]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4476.628020]  process_one_work+0x17a/0x420
>[ 4476.628021]  worker_thread+0x3d/0x3b0
>[ 4476.628023]  kthread+0x12f/0x150
>[ 4476.628024]  ? process_one_work+0x420/0x420
>[ 4476.628025]  ? kthread_create_on_node+0x40/0x40
>[ 4476.628026]  ret_from_fork+0x25/0x30
>[ 4476.628027] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4518.082891] INFO: rcu_sched self-detected stall on CPU
>[ 4518.154289] 	1-...: (271941 ticks this GP) idle=fda/140000000000001/0 softirq=1920776/1920776 fqs=67979 
>[ 4518.156648] 	 (t=273012 jiffies g=320 c=319 q=4)
>[ 4518.159021] NMI backtrace for cpu 1
>[ 4518.161378] CPU: 1 PID: 19191 Comm: (d-logind) Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4518.163799] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4518.166275] Call Trace:
>[ 4518.168742]  <IRQ>
>[ 4518.171202]  dump_stack+0x65/0x8e
>[ 4518.173660]  nmi_cpu_backtrace+0xbe/0xc0
>[ 4518.176115]  ? irq_force_complete_move+0xe0/0xe0
>[ 4518.178577]  nmi_trigger_cpumask_backtrace+0xb0/0x100
>[ 4518.181041]  arch_trigger_cpumask_backtrace+0x19/0x20
>[ 4518.183519]  rcu_dump_cpu_stacks+0xa3/0xdc
>[ 4518.185991]  rcu_check_callbacks+0x6ca/0x970
>[ 4518.188453]  ? debug_smp_processor_id+0x17/0x20
>[ 4518.190931]  update_process_times+0x2f/0x60
>[ 4518.193386]  tick_sched_handle+0x39/0x50
>[ 4518.195828]  tick_sched_timer+0x39/0x80
>[ 4518.198245]  ? tick_sched_do_timer+0x50/0x50
>[ 4518.200683]  __hrtimer_run_queues+0xe4/0x280
>[ 4518.203100]  hrtimer_interrupt+0xb2/0x1e0
>[ 4518.205527]  ? x86_configure_nx+0x60/0x60
>[ 4518.207926]  smp_apic_timer_interrupt+0x6b/0x160
>[ 4518.210321]  apic_timer_interrupt+0x93/0xa0
>[ 4518.212715]  </IRQ>
>[ 4518.215055] RIP: 0010:smp_call_function_many+0x20e/0x240
>[ 4518.217369] RSP: 0018:ffffc90001a27c48 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
>[ 4518.219692] RAX: 0000000000000002 RBX: ffff88027109b840 RCX: 0000000000000001
>[ 4518.222024] RDX: ffff88027111f2e0 RSI: 0000000000000000 RDI: ffff88027109b848
>[ 4518.224379] RBP: ffffc90001a27c80 R08: fffffffffffffffe R09: 000000000000000d
>[ 4518.226720] R10: ffffc90001a27db0 R11: 0000000000000010 R12: ffff88027109b848
>[ 4518.229068] R13: 0000000000000008 R14: ffffffff810aa7e0 R15: 0000000000000000
>[ 4518.231427]  ? x86_configure_nx+0x60/0x60
>[ 4518.233794]  ? smp_call_function_many+0x1ea/0x240
>[ 4518.236140]  ? x86_configure_nx+0x60/0x60
>[ 4518.238473]  smp_call_function+0x3b/0x70
>[ 4518.240786]  ? x86_configure_nx+0x60/0x60
>[ 4518.243102]  on_each_cpu+0x2f/0x90
>[ 4518.245406]  flush_tlb_kernel_range+0x3c/0x60
>[ 4518.247719]  __purge_vmap_area_lazy+0x52/0xe0
>[ 4518.250022]  vm_unmap_aliases+0x10f/0x150
>[ 4518.252324]  change_page_attr_set_clr+0x283/0x420
>[ 4518.254651]  set_memory_ro+0x29/0x30
>[ 4518.256980]  bpf_prog_select_runtime+0x53/0xe0
>[ 4518.259328]  bpf_prepare_filter+0x37e/0x3a0
>[ 4518.261646]  bpf_prog_create_from_user+0x9a/0x100
>[ 4518.263965]  ? kdb_kbd_cleanup_state+0x40/0x40
>[ 4518.266284]  do_seccomp+0x211/0x690
>[ 4518.268595]  SyS_seccomp+0xe/0x10
>[ 4518.270906]  entry_SYSCALL_64_fastpath+0x1a/0xa5
>[ 4518.273228] RIP: 0033:0x7ff0e983f539
>[ 4518.275541] RSP: 002b:00007fffa254eee8 EFLAGS: 00000246 ORIG_RAX: 000000000000013d
>[ 4518.277893] RAX: ffffffffffffffda RBX: 000000000000013d RCX: 00007ff0e983f539
>[ 4518.280177] RDX: 000055e05c01a7e0 RSI: 0000000000000000 RDI: 0000000000000001
>[ 4518.282407] RBP: 000055e05c067fa0 R08: 000055e05c01a7e0 R09: 000000004000003e
>[ 4518.284611] R10: 0000000000000030 R11: 0000000000000246 R12: 000055e05bf234a0
>[ 4518.286791] R13: 00007fffa254ef38 R14: 00007fffa254ef40 R15: 00007ff0eafad854
>[ 4518.288968] Sending NMI from CPU 1 to CPUs 2:
>[ 4518.291156] NMI backtrace for cpu 2
>[ 4518.291158] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4518.291159] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4518.291163] Workqueue: i915 i915_gem_retire_work_handler
>[ 4518.291164] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4518.291167] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4518.291168] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4518.291169] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4518.291169] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4518.291170] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4518.291170] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4518.291171] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4518.291172] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4518.291173] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4518.291173] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4518.291174] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4518.291175] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4518.291175] PKRU: 55555554
>[ 4518.291175] Call Trace:
>[ 4518.291178]  do_raw_spin_lock+0xb2/0xc0
>[ 4518.291181]  _raw_spin_lock_irq+0x26/0x30
>[ 4518.291183]  i915_gem_retire_requests+0x73/0x1a0
>[ 4518.291186]  ? finish_task_switch+0x9f/0x240
>[ 4518.291188]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4518.291190]  process_one_work+0x17a/0x420
>[ 4518.291191]  worker_thread+0x3d/0x3b0
>[ 4518.291193]  kthread+0x12f/0x150
>[ 4518.291194]  ? process_one_work+0x420/0x420
>[ 4518.291195]  ? kthread_create_on_node+0x40/0x40
>[ 4518.291196]  ret_from_fork+0x25/0x30
>[ 4518.291198] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4539.556890] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4539.626641] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=301557 
>[ 4539.628818] 	(detected by 1, t=1218097 jiffies, g=605158, c=605157, q=13782)
>[ 4539.631005] Sending NMI from CPU 1 to CPUs 2:
>[ 4539.633185] NMI backtrace for cpu 2
>[ 4539.633187] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4539.633188] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4539.633193] Workqueue: i915 i915_gem_retire_work_handler
>[ 4539.633194] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4539.633197] RIP: 0010:queued_spin_lock_slowpath+0x18e/0x1f0
>[ 4539.633198] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4539.633199] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4539.633199] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4539.633200] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4539.633201] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4539.633201] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4539.633202] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4539.633203] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4539.633204] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4539.633204] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4539.633205] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4539.633205] PKRU: 55555554
>[ 4539.633206] Call Trace:
>[ 4539.633209]  do_raw_spin_lock+0xb2/0xc0
>[ 4539.633213]  _raw_spin_lock_irq+0x26/0x30
>[ 4539.633215]  i915_gem_retire_requests+0x73/0x1a0
>[ 4539.633218]  ? finish_task_switch+0x9f/0x240
>[ 4539.633220]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4539.633221]  process_one_work+0x17a/0x420
>[ 4539.633223]  worker_thread+0x3d/0x3b0
>[ 4539.633225]  kthread+0x12f/0x150
>[ 4539.633226]  ? process_one_work+0x420/0x420
>[ 4539.633227]  ? kthread_create_on_node+0x40/0x40
>[ 4539.633228]  ret_from_fork+0x25/0x30
>[ 4539.633229] Code: 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 8b 07 <84> c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 5d c3 
>[ 4581.085889] INFO: rcu_sched self-detected stall on CPU
>[ 4581.157417] 	1-...: (334660 ticks this GP) idle=fda/140000000000001/0 softirq=1920776/1920776 fqs=83657 
>[ 4581.159782] 	 (t=336015 jiffies g=320 c=319 q=4)
>[ 4581.162155] NMI backtrace for cpu 1
>[ 4581.164526] CPU: 1 PID: 19191 Comm: (d-logind) Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4581.166951] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4581.169423] Call Trace:
>[ 4581.171901]  <IRQ>
>[ 4581.174363]  dump_stack+0x65/0x8e
>[ 4581.176817]  nmi_cpu_backtrace+0xbe/0xc0
>[ 4581.179270]  ? irq_force_complete_move+0xe0/0xe0
>[ 4581.181736]  nmi_trigger_cpumask_backtrace+0xb0/0x100
>[ 4581.184193]  arch_trigger_cpumask_backtrace+0x19/0x20
>[ 4581.186662]  rcu_dump_cpu_stacks+0xa3/0xdc
>[ 4581.189136]  rcu_check_callbacks+0x6ca/0x970
>[ 4581.191601]  ? debug_smp_processor_id+0x17/0x20
>[ 4581.194061]  update_process_times+0x2f/0x60
>[ 4581.196507]  tick_sched_handle+0x39/0x50
>[ 4581.198948]  tick_sched_timer+0x39/0x80
>[ 4581.201374]  ? tick_sched_do_timer+0x50/0x50
>[ 4581.203795]  __hrtimer_run_queues+0xe4/0x280
>[ 4581.206219]  hrtimer_interrupt+0xb2/0x1e0
>[ 4581.208640]  ? x86_configure_nx+0x60/0x60
>[ 4581.211035]  smp_apic_timer_interrupt+0x6b/0x160
>[ 4581.213435]  apic_timer_interrupt+0x93/0xa0
>[ 4581.215819]  </IRQ>
>[ 4581.218163] RIP: 0010:smp_call_function_many+0x20e/0x240
>[ 4581.220480] RSP: 0018:ffffc90001a27c48 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
>[ 4581.222815] RAX: 0000000000000002 RBX: ffff88027109b840 RCX: 0000000000000001
>[ 4581.225137] RDX: ffff88027111f2e0 RSI: 0000000000000000 RDI: ffff88027109b848
>[ 4581.227486] RBP: ffffc90001a27c80 R08: fffffffffffffffe R09: 000000000000000d
>[ 4581.229818] R10: ffffc90001a27db0 R11: 0000000000000010 R12: ffff88027109b848
>[ 4581.232160] R13: 0000000000000008 R14: ffffffff810aa7e0 R15: 0000000000000000
>[ 4581.234514]  ? x86_configure_nx+0x60/0x60
>[ 4581.236865]  ? smp_call_function_many+0x1ea/0x240
>[ 4581.239226]  ? x86_configure_nx+0x60/0x60
>[ 4581.241567]  smp_call_function+0x3b/0x70
>[ 4581.243883]  ? x86_configure_nx+0x60/0x60
>[ 4581.246209]  on_each_cpu+0x2f/0x90
>[ 4581.248506]  flush_tlb_kernel_range+0x3c/0x60
>[ 4581.250821]  __purge_vmap_area_lazy+0x52/0xe0
>[ 4581.253112]  vm_unmap_aliases+0x10f/0x150
>[ 4581.255419]  change_page_attr_set_clr+0x283/0x420
>[ 4581.257737]  set_memory_ro+0x29/0x30
>[ 4581.260050]  bpf_prog_select_runtime+0x53/0xe0
>[ 4581.262368]  bpf_prepare_filter+0x37e/0x3a0
>[ 4581.264677]  bpf_prog_create_from_user+0x9a/0x100
>[ 4581.267001]  ? kdb_kbd_cleanup_state+0x40/0x40
>[ 4581.269314]  do_seccomp+0x211/0x690
>[ 4581.271623]  SyS_seccomp+0xe/0x10
>[ 4581.273932]  entry_SYSCALL_64_fastpath+0x1a/0xa5
>[ 4581.276249] RIP: 0033:0x7ff0e983f539
>[ 4581.278564] RSP: 002b:00007fffa254eee8 EFLAGS: 00000246 ORIG_RAX: 000000000000013d
>[ 4581.280916] RAX: ffffffffffffffda RBX: 000000000000013d RCX: 00007ff0e983f539
>[ 4581.283202] RDX: 000055e05c01a7e0 RSI: 0000000000000000 RDI: 0000000000000001
>[ 4581.285423] RBP: 000055e05c067fa0 R08: 000055e05c01a7e0 R09: 000000004000003e
>[ 4581.287622] R10: 0000000000000030 R11: 0000000000000246 R12: 000055e05bf234a0
>[ 4581.289809] R13: 00007fffa254ef38 R14: 00007fffa254ef40 R15: 00007ff0eafad854
>[ 4581.291995] Sending NMI from CPU 1 to CPUs 2:
>[ 4581.294173] NMI backtrace for cpu 2
>[ 4581.294175] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4581.294176] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4581.294180] Workqueue: i915 i915_gem_retire_work_handler
>[ 4581.294181] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4581.294184] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4581.294185] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4581.294186] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4581.294186] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4581.294187] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4581.294188] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4581.294188] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4581.294189] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4581.294190] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4581.294190] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4581.294191] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4581.294192] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4581.294192] PKRU: 55555554
>[ 4581.294193] Call Trace:
>[ 4581.294195]  do_raw_spin_lock+0xb2/0xc0
>[ 4581.294198]  _raw_spin_lock_irq+0x26/0x30
>[ 4581.294201]  i915_gem_retire_requests+0x73/0x1a0
>[ 4581.294204]  ? finish_task_switch+0x9f/0x240
>[ 4581.294205]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4581.294207]  process_one_work+0x17a/0x420
>[ 4581.294209]  worker_thread+0x3d/0x3b0
>[ 4581.294210]  kthread+0x12f/0x150
>[ 4581.294211]  ? process_one_work+0x420/0x420
>[ 4581.294213]  ? kthread_create_on_node+0x40/0x40
>[ 4581.294214]  ret_from_fork+0x25/0x30
>[ 4581.294215] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4602.561888] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4602.612736] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=317250 
>[ 4602.614322] 	(detected by 3, t=1281154 jiffies, g=605158, c=605157, q=14446)
>[ 4602.615916] Sending NMI from CPU 3 to CPUs 2:
>[ 4602.617502] NMI backtrace for cpu 2
>[ 4602.617505] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4602.617505] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4602.617510] Workqueue: i915 i915_gem_retire_work_handler
>[ 4602.617511] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4602.617514] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4602.617515] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4602.617516] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4602.617517] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4602.617517] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4602.617518] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4602.617518] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4602.617519] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4602.617520] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4602.617521] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4602.617521] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4602.617522] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4602.617522] PKRU: 55555554
>[ 4602.617523] Call Trace:
>[ 4602.617526]  do_raw_spin_lock+0xb2/0xc0
>[ 4602.617529]  _raw_spin_lock_irq+0x26/0x30
>[ 4602.617532]  i915_gem_retire_requests+0x73/0x1a0
>[ 4602.617535]  ? finish_task_switch+0x9f/0x240
>[ 4602.617536]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4602.617538]  process_one_work+0x17a/0x420
>[ 4602.617539]  worker_thread+0x3d/0x3b0
>[ 4602.617541]  kthread+0x12f/0x150
>[ 4602.617542]  ? process_one_work+0x420/0x420
>[ 4602.617544]  ? kthread_create_on_node+0x40/0x40
>[ 4602.617545]  ret_from_fork+0x25/0x30
>[ 4602.617546] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4644.088888] INFO: rcu_sched self-detected stall on CPU
>[ 4644.160365] 	1-...: (397455 ticks this GP) idle=fda/140000000000001/0 softirq=1920776/1920776 fqs=99355 
>[ 4644.162734] 	 (t=399018 jiffies g=320 c=319 q=4)
>[ 4644.165112] NMI backtrace for cpu 1
>[ 4644.167486] CPU: 1 PID: 19191 Comm: (d-logind) Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4644.169891] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4644.172371] Call Trace:
>[ 4644.174831]  <IRQ>
>[ 4644.177287]  dump_stack+0x65/0x8e
>[ 4644.179739]  nmi_cpu_backtrace+0xbe/0xc0
>[ 4644.182191]  ? irq_force_complete_move+0xe0/0xe0
>[ 4644.184646]  nmi_trigger_cpumask_backtrace+0xb0/0x100
>[ 4644.187105]  arch_trigger_cpumask_backtrace+0x19/0x20
>[ 4644.189567]  rcu_dump_cpu_stacks+0xa3/0xdc
>[ 4644.192041]  rcu_check_callbacks+0x6ca/0x970
>[ 4644.194509]  ? debug_smp_processor_id+0x17/0x20
>[ 4644.196965]  update_process_times+0x2f/0x60
>[ 4644.199416]  tick_sched_handle+0x39/0x50
>[ 4644.201854]  tick_sched_timer+0x39/0x80
>[ 4644.204285]  ? tick_sched_do_timer+0x50/0x50
>[ 4644.206720]  __hrtimer_run_queues+0xe4/0x280
>[ 4644.209151]  hrtimer_interrupt+0xb2/0x1e0
>[ 4644.211578]  ? x86_configure_nx+0x60/0x60
>[ 4644.213970]  smp_apic_timer_interrupt+0x6b/0x160
>[ 4644.216369]  apic_timer_interrupt+0x93/0xa0
>[ 4644.218754]  </IRQ>
>[ 4644.221090] RIP: 0010:smp_call_function_many+0x20e/0x240
>[ 4644.223395] RSP: 0018:ffffc90001a27c48 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
>[ 4644.225734] RAX: 0000000000000002 RBX: ffff88027109b840 RCX: 0000000000000001
>[ 4644.228066] RDX: ffff88027111f2e0 RSI: 0000000000000000 RDI: ffff88027109b848
>[ 4644.230402] RBP: ffffc90001a27c80 R08: fffffffffffffffe R09: 000000000000000d
>[ 4644.232736] R10: ffffc90001a27db0 R11: 0000000000000010 R12: ffff88027109b848
>[ 4644.235095] R13: 0000000000000008 R14: ffffffff810aa7e0 R15: 0000000000000000
>[ 4644.237452]  ? x86_configure_nx+0x60/0x60
>[ 4644.239809]  ? smp_call_function_many+0x1ea/0x240
>[ 4644.242161]  ? x86_configure_nx+0x60/0x60
>[ 4644.244503]  smp_call_function+0x3b/0x70
>[ 4644.246829]  ? x86_configure_nx+0x60/0x60
>[ 4644.249134]  on_each_cpu+0x2f/0x90
>[ 4644.251437]  flush_tlb_kernel_range+0x3c/0x60
>[ 4644.253751]  __purge_vmap_area_lazy+0x52/0xe0
>[ 4644.256044]  vm_unmap_aliases+0x10f/0x150
>[ 4644.258345]  change_page_attr_set_clr+0x283/0x420
>[ 4644.260655]  set_memory_ro+0x29/0x30
>[ 4644.262969]  bpf_prog_select_runtime+0x53/0xe0
>[ 4644.265287]  bpf_prepare_filter+0x37e/0x3a0
>[ 4644.267610]  bpf_prog_create_from_user+0x9a/0x100
>[ 4644.269926]  ? kdb_kbd_cleanup_state+0x40/0x40
>[ 4644.272235]  do_seccomp+0x211/0x690
>[ 4644.274541]  SyS_seccomp+0xe/0x10
>[ 4644.276850]  entry_SYSCALL_64_fastpath+0x1a/0xa5
>[ 4644.279162] RIP: 0033:0x7ff0e983f539
>[ 4644.281478] RSP: 002b:00007fffa254eee8 EFLAGS: 00000246 ORIG_RAX: 000000000000013d
>[ 4644.283826] RAX: ffffffffffffffda RBX: 000000000000013d RCX: 00007ff0e983f539
>[ 4644.286142] RDX: 000055e05c01a7e0 RSI: 0000000000000000 RDI: 0000000000000001
>[ 4644.288379] RBP: 000055e05c067fa0 R08: 000055e05c01a7e0 R09: 000000004000003e
>[ 4644.290579] R10: 0000000000000030 R11: 0000000000000246 R12: 000055e05bf234a0
>[ 4644.292764] R13: 00007fffa254ef38 R14: 00007fffa254ef40 R15: 00007ff0eafad854
>[ 4644.294954] Sending NMI from CPU 1 to CPUs 2:
>[ 4644.297129] NMI backtrace for cpu 2
>[ 4644.297131] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4644.297131] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4644.297136] Workqueue: i915 i915_gem_retire_work_handler
>[ 4644.297137] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4644.297140] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4644.297141] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4644.297142] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4644.297142] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4644.297143] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4644.297143] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4644.297144] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4644.297145] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4644.297146] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4644.297146] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4644.297147] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4644.297148] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4644.297148] PKRU: 55555554
>[ 4644.297148] Call Trace:
>[ 4644.297151]  do_raw_spin_lock+0xb2/0xc0
>[ 4644.297154]  _raw_spin_lock_irq+0x26/0x30
>[ 4644.297156]  i915_gem_retire_requests+0x73/0x1a0
>[ 4644.297159]  ? finish_task_switch+0x9f/0x240
>[ 4644.297161]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4644.297162]  process_one_work+0x17a/0x420
>[ 4644.297164]  worker_thread+0x3d/0x3b0
>[ 4644.297166]  kthread+0x12f/0x150
>[ 4644.297167]  ? process_one_work+0x420/0x420
>[ 4644.297168]  ? kthread_create_on_node+0x40/0x40
>[ 4644.297169]  ret_from_fork+0x25/0x30
>[ 4644.297170] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4665.566887] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4665.636526] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=332936 
>[ 4665.638695] 	(detected by 1, t=1344107 jiffies, g=605158, c=605157, q=15088)
>[ 4665.640883] Sending NMI from CPU 1 to CPUs 2:
>[ 4665.643050] NMI backtrace for cpu 2
>[ 4665.643052] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4665.643053] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4665.643058] Workqueue: i915 i915_gem_retire_work_handler
>[ 4665.643059] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4665.643062] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4665.643063] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4665.643064] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4665.643065] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4665.643065] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4665.643066] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4665.643066] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4665.643067] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4665.643068] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4665.643069] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4665.643070] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4665.643070] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4665.643071] PKRU: 55555554
>[ 4665.643071] Call Trace:
>[ 4665.643075]  do_raw_spin_lock+0xb2/0xc0
>[ 4665.643078]  _raw_spin_lock_irq+0x26/0x30
>[ 4665.643080]  i915_gem_retire_requests+0x73/0x1a0
>[ 4665.643083]  ? finish_task_switch+0x9f/0x240
>[ 4665.643085]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4665.643086]  process_one_work+0x17a/0x420
>[ 4665.643088]  worker_thread+0x3d/0x3b0
>[ 4665.643089]  kthread+0x12f/0x150
>[ 4665.643090]  ? process_one_work+0x420/0x420
>[ 4665.643092]  ? kthread_create_on_node+0x40/0x40
>[ 4665.643093]  ret_from_fork+0x25/0x30
>[ 4665.643094] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4707.091886] INFO: rcu_sched self-detected stall on CPU
>[ 4707.163344] 	1-...: (460174 ticks this GP) idle=fda/140000000000001/0 softirq=1920776/1920776 fqs=115034 
>[ 4707.165708] 	 (t=462021 jiffies g=320 c=319 q=4)
>[ 4707.168079] NMI backtrace for cpu 1
>[ 4707.170454] CPU: 1 PID: 19191 Comm: (d-logind) Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4707.172866] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4707.175335] Call Trace:
>[ 4707.177790]  <IRQ>
>[ 4707.180246]  dump_stack+0x65/0x8e
>[ 4707.182699]  nmi_cpu_backtrace+0xbe/0xc0
>[ 4707.185152]  ? irq_force_complete_move+0xe0/0xe0
>[ 4707.187609]  nmi_trigger_cpumask_backtrace+0xb0/0x100
>[ 4707.190078]  arch_trigger_cpumask_backtrace+0x19/0x20
>[ 4707.192588]  rcu_dump_cpu_stacks+0xa3/0xdc
>[ 4707.195061]  rcu_check_callbacks+0x6ca/0x970
>[ 4707.197522]  ? debug_smp_processor_id+0x17/0x20
>[ 4707.199998]  update_process_times+0x2f/0x60
>[ 4707.202449]  tick_sched_handle+0x39/0x50
>[ 4707.204881]  tick_sched_timer+0x39/0x80
>[ 4707.207310]  ? tick_sched_do_timer+0x50/0x50
>[ 4707.209728]  __hrtimer_run_queues+0xe4/0x280
>[ 4707.212152]  hrtimer_interrupt+0xb2/0x1e0
>[ 4707.214564]  ? x86_configure_nx+0x60/0x60
>[ 4707.216962]  smp_apic_timer_interrupt+0x6b/0x160
>[ 4707.219361]  apic_timer_interrupt+0x93/0xa0
>[ 4707.221738]  </IRQ>
>[ 4707.224073] RIP: 0010:smp_call_function_many+0x20e/0x240
>[ 4707.226386] RSP: 0018:ffffc90001a27c48 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
>[ 4707.228720] RAX: 0000000000000002 RBX: ffff88027109b840 RCX: 0000000000000001
>[ 4707.231058] RDX: ffff88027111f2e0 RSI: 0000000000000000 RDI: ffff88027109b848
>[ 4707.233412] RBP: ffffc90001a27c80 R08: fffffffffffffffe R09: 000000000000000d
>[ 4707.235763] R10: ffffc90001a27db0 R11: 0000000000000010 R12: ffff88027109b848
>[ 4707.238112] R13: 0000000000000008 R14: ffffffff810aa7e0 R15: 0000000000000000
>[ 4707.240467]  ? x86_configure_nx+0x60/0x60
>[ 4707.242821]  ? smp_call_function_many+0x1ea/0x240
>[ 4707.245169]  ? x86_configure_nx+0x60/0x60
>[ 4707.247502]  smp_call_function+0x3b/0x70
>[ 4707.249822]  ? x86_configure_nx+0x60/0x60
>[ 4707.252135]  on_each_cpu+0x2f/0x90
>[ 4707.254436]  flush_tlb_kernel_range+0x3c/0x60
>[ 4707.256747]  __purge_vmap_area_lazy+0x52/0xe0
>[ 4707.259059]  vm_unmap_aliases+0x10f/0x150
>[ 4707.261375]  change_page_attr_set_clr+0x283/0x420
>[ 4707.263690]  set_memory_ro+0x29/0x30
>[ 4707.266007]  bpf_prog_select_runtime+0x53/0xe0
>[ 4707.268326]  bpf_prepare_filter+0x37e/0x3a0
>[ 4707.270640]  bpf_prog_create_from_user+0x9a/0x100
>[ 4707.272969]  ? kdb_kbd_cleanup_state+0x40/0x40
>[ 4707.275289]  do_seccomp+0x211/0x690
>[ 4707.277612]  SyS_seccomp+0xe/0x10
>[ 4707.279918]  entry_SYSCALL_64_fastpath+0x1a/0xa5
>[ 4707.282242] RIP: 0033:0x7ff0e983f539
>[ 4707.284566] RSP: 002b:00007fffa254eee8 EFLAGS: 00000246 ORIG_RAX: 000000000000013d
>[ 4707.286935] RAX: ffffffffffffffda RBX: 000000000000013d RCX: 00007ff0e983f539
>[ 4707.289237] RDX: 000055e05c01a7e0 RSI: 0000000000000000 RDI: 0000000000000001
>[ 4707.291478] RBP: 000055e05c067fa0 R08: 000055e05c01a7e0 R09: 000000004000003e
>[ 4707.293691] R10: 0000000000000030 R11: 0000000000000246 R12: 000055e05bf234a0
>[ 4707.295883] R13: 00007fffa254ef38 R14: 00007fffa254ef40 R15: 00007ff0eafad854
>[ 4707.298073] Sending NMI from CPU 1 to CPUs 2:
>[ 4707.300256] NMI backtrace for cpu 2
>[ 4707.300258] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4707.300259] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4707.300263] Workqueue: i915 i915_gem_retire_work_handler
>[ 4707.300264] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4707.300267] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4707.300268] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4707.300269] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4707.300270] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4707.300270] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4707.300271] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4707.300271] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4707.300272] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4707.300273] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4707.300274] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4707.300275] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4707.300275] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4707.300276] PKRU: 55555554
>[ 4707.300276] Call Trace:
>[ 4707.300279]  do_raw_spin_lock+0xb2/0xc0
>[ 4707.300281]  _raw_spin_lock_irq+0x26/0x30
>[ 4707.300284]  i915_gem_retire_requests+0x73/0x1a0
>[ 4707.300286]  ? finish_task_switch+0x9f/0x240
>[ 4707.300288]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4707.300290]  process_one_work+0x17a/0x420
>[ 4707.300291]  worker_thread+0x3d/0x3b0
>[ 4707.300293]  kthread+0x12f/0x150
>[ 4707.300294]  ? process_one_work+0x420/0x420
>[ 4707.300295]  ? kthread_create_on_node+0x40/0x40
>[ 4707.300296]  ret_from_fork+0x25/0x30
>[ 4707.300297] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4728.571885] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4728.622801] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=348628 
>[ 4728.624393] 	(detected by 3, t=1407164 jiffies, g=605158, c=605157, q=15786)
>[ 4728.625987] Sending NMI from CPU 3 to CPUs 2:
>[ 4728.627576] NMI backtrace for cpu 2
>[ 4728.627578] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4728.627579] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4728.627584] Workqueue: i915 i915_gem_retire_work_handler
>[ 4728.627585] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4728.627588] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4728.627589] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4728.627590] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4728.627590] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4728.627591] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4728.627591] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4728.627592] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4728.627593] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4728.627594] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4728.627594] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4728.627595] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4728.627596] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4728.627596] PKRU: 55555554
>[ 4728.627597] Call Trace:
>[ 4728.627600]  do_raw_spin_lock+0xb2/0xc0
>[ 4728.627603]  _raw_spin_lock_irq+0x26/0x30
>[ 4728.627606]  i915_gem_retire_requests+0x73/0x1a0
>[ 4728.627609]  ? finish_task_switch+0x9f/0x240
>[ 4728.627610]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4728.627612]  process_one_work+0x17a/0x420
>[ 4728.627613]  worker_thread+0x3d/0x3b0
>[ 4728.627615]  kthread+0x12f/0x150
>[ 4728.627616]  ? process_one_work+0x420/0x420
>[ 4728.627618]  ? kthread_create_on_node+0x40/0x40
>[ 4728.627619]  ret_from_fork+0x25/0x30
>[ 4728.627620] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4770.094884] INFO: rcu_sched self-detected stall on CPU
>[ 4770.166422] 	1-...: (522969 ticks this GP) idle=fda/140000000000001/0 softirq=1920776/1920776 fqs=130731 
>[ 4770.168794] 	 (t=525024 jiffies g=320 c=319 q=4)
>[ 4770.171166] NMI backtrace for cpu 1
>[ 4770.173560] CPU: 1 PID: 19191 Comm: (d-logind) Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4770.175985] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4770.178470] Call Trace:
>[ 4770.180944]  <IRQ>
>[ 4770.183408]  dump_stack+0x65/0x8e
>[ 4770.185870]  nmi_cpu_backtrace+0xbe/0xc0
>[ 4770.188343]  ? irq_force_complete_move+0xe0/0xe0
>[ 4770.190805]  nmi_trigger_cpumask_backtrace+0xb0/0x100
>[ 4770.193285]  arch_trigger_cpumask_backtrace+0x19/0x20
>[ 4770.195750]  rcu_dump_cpu_stacks+0xa3/0xdc
>[ 4770.198224]  rcu_check_callbacks+0x6ca/0x970
>[ 4770.200701]  ? debug_smp_processor_id+0x17/0x20
>[ 4770.203167]  update_process_times+0x2f/0x60
>[ 4770.205620]  tick_sched_handle+0x39/0x50
>[ 4770.208068]  tick_sched_timer+0x39/0x80
>[ 4770.210498]  ? tick_sched_do_timer+0x50/0x50
>[ 4770.212950]  __hrtimer_run_queues+0xe4/0x280
>[ 4770.215381]  hrtimer_interrupt+0xb2/0x1e0
>[ 4770.217794]  ? x86_configure_nx+0x60/0x60
>[ 4770.220200]  smp_apic_timer_interrupt+0x6b/0x160
>[ 4770.222602]  apic_timer_interrupt+0x93/0xa0
>[ 4770.224997]  </IRQ>
>[ 4770.227336] RIP: 0010:smp_call_function_many+0x20e/0x240
>[ 4770.229640] RSP: 0018:ffffc90001a27c48 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
>[ 4770.231972] RAX: 0000000000000002 RBX: ffff88027109b840 RCX: 0000000000000001
>[ 4770.234311] RDX: ffff88027111f2e0 RSI: 0000000000000000 RDI: ffff88027109b848
>[ 4770.236647] RBP: ffffc90001a27c80 R08: fffffffffffffffe R09: 000000000000000d
>[ 4770.238996] R10: ffffc90001a27db0 R11: 0000000000000010 R12: ffff88027109b848
>[ 4770.241349] R13: 0000000000000008 R14: ffffffff810aa7e0 R15: 0000000000000000
>[ 4770.243710]  ? x86_configure_nx+0x60/0x60
>[ 4770.246065]  ? smp_call_function_many+0x1ea/0x240
>[ 4770.248412]  ? x86_configure_nx+0x60/0x60
>[ 4770.250742]  smp_call_function+0x3b/0x70
>[ 4770.253059]  ? x86_configure_nx+0x60/0x60
>[ 4770.255377]  on_each_cpu+0x2f/0x90
>[ 4770.257675]  flush_tlb_kernel_range+0x3c/0x60
>[ 4770.259992]  __purge_vmap_area_lazy+0x52/0xe0
>[ 4770.262301]  vm_unmap_aliases+0x10f/0x150
>[ 4770.264611]  change_page_attr_set_clr+0x283/0x420
>[ 4770.266931]  set_memory_ro+0x29/0x30
>[ 4770.269251]  bpf_prog_select_runtime+0x53/0xe0
>[ 4770.271577]  bpf_prepare_filter+0x37e/0x3a0
>[ 4770.273890]  bpf_prog_create_from_user+0x9a/0x100
>[ 4770.276205]  ? kdb_kbd_cleanup_state+0x40/0x40
>[ 4770.278519]  do_seccomp+0x211/0x690
>[ 4770.280839]  SyS_seccomp+0xe/0x10
>[ 4770.283152]  entry_SYSCALL_64_fastpath+0x1a/0xa5
>[ 4770.285475] RIP: 0033:0x7ff0e983f539
>[ 4770.287789] RSP: 002b:00007fffa254eee8 EFLAGS: 00000246 ORIG_RAX: 000000000000013d
>[ 4770.290137] RAX: ffffffffffffffda RBX: 000000000000013d RCX: 00007ff0e983f539
>[ 4770.292432] RDX: 000055e05c01a7e0 RSI: 0000000000000000 RDI: 0000000000000001
>[ 4770.294661] RBP: 000055e05c067fa0 R08: 000055e05c01a7e0 R09: 000000004000003e
>[ 4770.296860] R10: 0000000000000030 R11: 0000000000000246 R12: 000055e05bf234a0
>[ 4770.299050] R13: 00007fffa254ef38 R14: 00007fffa254ef40 R15: 00007ff0eafad854
>[ 4770.301236] Sending NMI from CPU 1 to CPUs 2:
>[ 4770.303413] NMI backtrace for cpu 2
>[ 4770.303415] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4770.303416] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4770.303421] Workqueue: i915 i915_gem_retire_work_handler
>[ 4770.303422] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4770.303425] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4770.303425] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4770.303426] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4770.303427] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4770.303428] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4770.303428] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4770.303429] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4770.303430] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4770.303430] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4770.303431] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4770.303432] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4770.303432] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4770.303433] PKRU: 55555554
>[ 4770.303433] Call Trace:
>[ 4770.303436]  do_raw_spin_lock+0xb2/0xc0
>[ 4770.303438]  _raw_spin_lock_irq+0x26/0x30
>[ 4770.303441]  i915_gem_retire_requests+0x73/0x1a0
>[ 4770.303444]  ? finish_task_switch+0x9f/0x240
>[ 4770.303445]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4770.303447]  process_one_work+0x17a/0x420
>[ 4770.303448]  worker_thread+0x3d/0x3b0
>[ 4770.303450]  kthread+0x12f/0x150
>[ 4770.303451]  ? process_one_work+0x420/0x420
>[ 4770.303452]  ? kthread_create_on_node+0x40/0x40
>[ 4770.303454]  ret_from_fork+0x25/0x30
>[ 4770.303455] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4791.576884] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4791.646564] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=364314 
>[ 4791.648734] 	(detected by 1, t=1470117 jiffies, g=605158, c=605157, q=16605)
>[ 4791.650934] Sending NMI from CPU 1 to CPUs 2:
>[ 4791.653095] NMI backtrace for cpu 2
>[ 4791.653097] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4791.653098] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4791.653103] Workqueue: i915 i915_gem_retire_work_handler
>[ 4791.653104] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4791.653108] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4791.653108] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4791.653109] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4791.653110] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4791.653111] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4791.653111] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4791.653112] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4791.653113] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4791.653113] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4791.653114] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4791.653115] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4791.653115] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4791.653116] PKRU: 55555554
>[ 4791.653116] Call Trace:
>[ 4791.653120]  do_raw_spin_lock+0xb2/0xc0
>[ 4791.653123]  _raw_spin_lock_irq+0x26/0x30
>[ 4791.653126]  i915_gem_retire_requests+0x73/0x1a0
>[ 4791.653129]  ? finish_task_switch+0x9f/0x240
>[ 4791.653130]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4791.653132]  process_one_work+0x17a/0x420
>[ 4791.653133]  worker_thread+0x3d/0x3b0
>[ 4791.653135]  kthread+0x12f/0x150
>[ 4791.653136]  ? process_one_work+0x420/0x420
>[ 4791.653138]  ? kthread_create_on_node+0x40/0x40
>[ 4791.653139]  ret_from_fork+0x25/0x30
>[ 4791.653140] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4833.097883] INFO: rcu_sched self-detected stall on CPU
>[ 4833.170558] 	1-...: (585688 ticks this GP) idle=fda/140000000000001/0 softirq=1920776/1920776 fqs=146409 
>[ 4833.172914] 	 (t=588027 jiffies g=320 c=319 q=4)
>[ 4833.175284] NMI backtrace for cpu 1
>[ 4833.177640] CPU: 1 PID: 19191 Comm: (d-logind) Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4833.180041] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4833.182507] Call Trace:
>[ 4833.184972]  <IRQ>
>[ 4833.187418]  dump_stack+0x65/0x8e
>[ 4833.189872]  nmi_cpu_backtrace+0xbe/0xc0
>[ 4833.192308]  ? irq_force_complete_move+0xe0/0xe0
>[ 4833.194770]  nmi_trigger_cpumask_backtrace+0xb0/0x100
>[ 4833.197227]  arch_trigger_cpumask_backtrace+0x19/0x20
>[ 4833.199681]  rcu_dump_cpu_stacks+0xa3/0xdc
>[ 4833.202151]  rcu_check_callbacks+0x6ca/0x970
>[ 4833.204616]  ? debug_smp_processor_id+0x17/0x20
>[ 4833.207071]  update_process_times+0x2f/0x60
>[ 4833.209514]  tick_sched_handle+0x39/0x50
>[ 4833.211949]  tick_sched_timer+0x39/0x80
>[ 4833.214377]  ? tick_sched_do_timer+0x50/0x50
>[ 4833.216796]  __hrtimer_run_queues+0xe4/0x280
>[ 4833.219212]  hrtimer_interrupt+0xb2/0x1e0
>[ 4833.221616]  ? x86_configure_nx+0x60/0x60
>[ 4833.224016]  smp_apic_timer_interrupt+0x6b/0x160
>[ 4833.226418]  apic_timer_interrupt+0x93/0xa0
>[ 4833.228801]  </IRQ>
>[ 4833.231132] RIP: 0010:smp_call_function_many+0x20e/0x240
>[ 4833.233439] RSP: 0018:ffffc90001a27c48 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
>[ 4833.235759] RAX: 0000000000000002 RBX: ffff88027109b840 RCX: 0000000000000001
>[ 4833.238082] RDX: ffff88027111f2e0 RSI: 0000000000000000 RDI: ffff88027109b848
>[ 4833.240416] RBP: ffffc90001a27c80 R08: fffffffffffffffe R09: 000000000000000d
>[ 4833.242759] R10: ffffc90001a27db0 R11: 0000000000000010 R12: ffff88027109b848
>[ 4833.245101] R13: 0000000000000008 R14: ffffffff810aa7e0 R15: 0000000000000000
>[ 4833.247465]  ? x86_configure_nx+0x60/0x60
>[ 4833.249817]  ? smp_call_function_many+0x1ea/0x240
>[ 4833.252158]  ? x86_configure_nx+0x60/0x60
>[ 4833.254490]  smp_call_function+0x3b/0x70
>[ 4833.256805]  ? x86_configure_nx+0x60/0x60
>[ 4833.259110]  on_each_cpu+0x2f/0x90
>[ 4833.261404]  flush_tlb_kernel_range+0x3c/0x60
>[ 4833.263712]  __purge_vmap_area_lazy+0x52/0xe0
>[ 4833.266012]  vm_unmap_aliases+0x10f/0x150
>[ 4833.268309]  change_page_attr_set_clr+0x283/0x420
>[ 4833.270619]  set_memory_ro+0x29/0x30
>[ 4833.272935]  bpf_prog_select_runtime+0x53/0xe0
>[ 4833.275252]  bpf_prepare_filter+0x37e/0x3a0
>[ 4833.277548]  bpf_prog_create_from_user+0x9a/0x100
>[ 4833.279862]  ? kdb_kbd_cleanup_state+0x40/0x40
>[ 4833.282172]  do_seccomp+0x211/0x690
>[ 4833.284472]  SyS_seccomp+0xe/0x10
>[ 4833.286780]  entry_SYSCALL_64_fastpath+0x1a/0xa5
>[ 4833.289093] RIP: 0033:0x7ff0e983f539
>[ 4833.291400] RSP: 002b:00007fffa254eee8 EFLAGS: 00000246 ORIG_RAX: 000000000000013d
>[ 4833.293743] RAX: ffffffffffffffda RBX: 000000000000013d RCX: 00007ff0e983f539
>[ 4833.296016] RDX: 000055e05c01a7e0 RSI: 0000000000000000 RDI: 0000000000000001
>[ 4833.298227] RBP: 000055e05c067fa0 R08: 000055e05c01a7e0 R09: 000000004000003e
>[ 4833.300418] R10: 0000000000000030 R11: 0000000000000246 R12: 000055e05bf234a0
>[ 4833.302613] R13: 00007fffa254ef38 R14: 00007fffa254ef40 R15: 00007ff0eafad854
>[ 4833.304789] Sending NMI from CPU 1 to CPUs 2:
>[ 4833.306966] NMI backtrace for cpu 2
>[ 4833.306968] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4833.306969] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4833.306973] Workqueue: i915 i915_gem_retire_work_handler
>[ 4833.306975] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4833.306977] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4833.306978] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4833.306979] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4833.306980] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4833.306980] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4833.306981] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4833.306981] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4833.306982] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4833.306983] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4833.306984] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4833.306985] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4833.306985] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4833.306985] PKRU: 55555554
>[ 4833.306986] Call Trace:
>[ 4833.306989]  do_raw_spin_lock+0xb2/0xc0
>[ 4833.306992]  _raw_spin_lock_irq+0x26/0x30
>[ 4833.306994]  i915_gem_retire_requests+0x73/0x1a0
>[ 4833.306997]  ? finish_task_switch+0x9f/0x240
>[ 4833.306998]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4833.307000]  process_one_work+0x17a/0x420
>[ 4833.307001]  worker_thread+0x3d/0x3b0
>[ 4833.307003]  kthread+0x12f/0x150
>[ 4833.307004]  ? process_one_work+0x420/0x420
>[ 4833.307006]  ? kthread_create_on_node+0x40/0x40
>[ 4833.307007]  ret_from_fork+0x25/0x30
>[ 4833.307008] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c 
>[ 4854.581883] INFO: rcu_preempt detected stalls on CPUs/tasks:
>[ 4854.651624] 	2-...: (1 GPs behind) idle=f7a/140000000000000/0 softirq=1904707/1904708 fqs=379994 
>[ 4854.653789] 	(detected by 1, t=1533122 jiffies, g=605158, c=605157, q=17534)
>[ 4854.655971] Sending NMI from CPU 1 to CPUs 2:
>[ 4854.658145] NMI backtrace for cpu 2
>[ 4854.658147] CPU: 2 PID: 13817 Comm: kworker/u8:1 Tainted: G      D W       4.14.0cnl_staging+ #20
>[ 4854.658148] Hardware name: Intel Corporation CannonLake Client Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X103.A01.1709041321 09/04/2017
>[ 4854.658153] Workqueue: i915 i915_gem_retire_work_handler
>[ 4854.658154] task: ffff880267502440 task.stack: ffffc900019b0000
>[ 4854.658158] RIP: 0010:queued_spin_lock_slowpath+0x18c/0x1f0
>[ 4854.658159] RSP: 0018:ffffc900019b3d98 EFLAGS: 00000002
>[ 4854.658160] RAX: 0000000000000101 RBX: ffff880263586168 RCX: 0000000000000001
>[ 4854.658160] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff880263586168
>[ 4854.658161] RBP: ffffc900019b3db0 R08: 0000000000000101 R09: ffff8802647000d0
>[ 4854.658161] R10: 0000000000000000 R11: 00000000000f4240 R12: ffffc900019b3e10
>[ 4854.658162] R13: ffff880267254000 R14: ffff880263586100 R15: ffff880263585ed0
>[ 4854.658163] FS:  0000000000000000(0000) GS:ffff880271100000(0000) knlGS:0000000000000000
>[ 4854.658164] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[ 4854.658164] CR2: 000055e6986c31f8 CR3: 000000000240b006 CR4: 00000000006606e0
>[ 4854.658165] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[ 4854.658166] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[ 4854.658166] PKRU: 55555554
>[ 4854.658166] Call Trace:
>[ 4854.658170]  do_raw_spin_lock+0xb2/0xc0
>[ 4854.658174]  _raw_spin_lock_irq+0x26/0x30
>[ 4854.658176]  i915_gem_retire_requests+0x73/0x1a0
>[ 4854.658179]  ? finish_task_switch+0x9f/0x240
>[ 4854.658181]  i915_gem_retire_work_handler+0x97/0xb0
>[ 4854.658183]  process_one_work+0x17a/0x420
>[ 4854.658184]  worker_thread+0x3d/0x3b0
>[ 4854.658186]  kthread+0x12f/0x150
>[ 4854.658187]  ? process_one_work+0x420/0x420
>[ 4854.658188]  ? kthread_create_on_node+0x40/0x40
>[ 4854.658189]  ret_from_fork+0x25/0x30
>[ 4854.658190] Code: c7 41 08 01 00 00 00 eb 4a f3 90 8b 37 81 fe 00 01 00 00 74 f4 e9 c6 fe ff ff 83 fa 01 0f 84 a4 fe ff ff 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 b8 01 00 00 00 66 89 07 48 83 c4 08 5b 41 5c

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