[ 427.256990] BUG: unable to handle kernel NULL pointer dereference at 0000000000000078 [ 427.257155] IP: [] intel_unpin_fb_obj+0x65/0xe0 [i915] [ 427.257313] PGD 0 [ 427.257329] [ 427.257342] Oops: 0000 [#1] SMP [ 427.257369] Modules linked in: netconsole rfcomm fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_raw ip6table_mangle ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_raw iptable_mangle iptable_security ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep arc4 iwlmvm mac80211 intel_rapl x86_pkg_temp_thermal coretemp kvm_intel mei_wdt kvm iwlwifi iTCO_wdt iTCO_vendor_support irqbypass intel_cstate intel_uncore cfg80211 snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic intel_rapl_perf btusb btrtl snd_hda_intel btbcm snd_hda_codec joydev btintel rtsx_pci_ms intel_pch_thermal bluetooth mei_me i2c_i801 snd_hwdep snd_hda_core i2c_smbus memstick snd_seq mei lpc_ich snd_seq_device shpchp snd_pcm thinkpad_acpi wmi snd_timer snd rfkill tpm_tis soundcore tpm_tis_core intel_rst nfsd tpm auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc dm_crypt hid_logitech_hidpp hid_logitech_dj hid_microsoft i915 i2c_algo_bit drm_kms_helper rtsx_pci_sdmmc mmc_core drm crct10dif_pclmul crc32_pclmul crc32c_intel e1000e ghash_clmulni_intel rtsx_pci ptp serio_raw pps_core video fjes [ 427.258222] CPU: 1 PID: 113 Comm: kworker/u16:2 Tainted: G W 4.9.0-rc6-drm-intel+ #171 [ 427.258251] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 427.258301] Workqueue: i915 intel_unpin_work_fn [i915] [ 427.258325] task: ffff97cca9373b80 task.stack: ffffa335011f8000 [ 427.258345] RIP: 0010:[] [] intel_unpin_fb_obj+0x65/0xe0 [i915] [ 427.258392] RSP: 0018:ffffa335011fbd68 EFLAGS: 00010296 [ 427.258410] RAX: 0000000000000000 RBX: ffff97cc378f5e40 RCX: ffffa335011fbd70 [ 427.258433] RDX: ffffa335011fbd68 RSI: ffff97cca3e84338 RDI: ffff97cc378f5e40 [ 427.258456] RBP: ffffa335011fbdb0 R08: 0000000000000000 R09: 0000000000000002 [ 427.258478] R10: 0000000000000000 R11: 0000000000000011 R12: ffff97ccae181700 [ 427.258501] R13: 0000000000000001 R14: ffff97cca85bf000 R15: ffff97cca3e80068 [ 427.258523] FS: 0000000000000000(0000) GS:ffff97ccbd840000(0000) knlGS:0000000000000000 [ 427.258548] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 427.258568] CR2: 0000000000000078 CR3: 0000000145e08000 CR4: 00000000003406e0 [ 427.258591] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 427.258613] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 427.258636] Stack: [ 427.258646] 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 427.258681] 0000000000000000 000000009f9f0ffb ffff97cc9052af00 ffff97cca82c7000 [ 427.258716] ffff97cca3e80000 ffffa335011fbdf0 ffffffffc042b6c8 ffff97cca86c9100 [ 427.258751] Call Trace: [ 427.258776] [] intel_unpin_work_fn+0x58/0x140 [i915] [ 427.258800] [] process_one_work+0x180/0x430 [ 427.258821] [] worker_thread+0x4e/0x480 [ 427.258840] [] ? process_one_work+0x430/0x430 [ 427.258861] [] kthread+0xee/0x110 [ 427.258880] [] ? kthread_park+0x60/0x60 [ 427.258898] [] ? kthread_park+0x60/0x60 [ 427.258918] [] ret_from_fork+0x25/0x30 [ 427.258937] Code: 83 f8 01 74 6c 48 8d 7d b8 44 89 ea 4c 89 e6 e8 52 28 ff ff 48 8b 43 08 48 8d 55 b8 48 89 df 48 8d b0 38 43 00 00 e8 2b f4 fb ff <48> 8b 48 78 48 85 c9 74 0d 8b 51 20 85 d2 7e 5a 83 ea 01 89 51 [ 427.259198] RIP [] intel_unpin_fb_obj+0x65/0xe0 [i915] [ 427.259238] RSP [ 427.259251] CR2: 0000000000000078 [ 427.266094] ---[ end trace e0675490795d08d6 ]--- [ 427.266149] BUG: unable to handle kernel paging request at 000000009f9f0ffb [ 427.266196] IP: [] __wake_up_common+0x25/0x80 [ 427.266236] PGD 0 [ 427.266249] [ 427.266261] Oops: 0000 [#2] SMP [ 427.266280] Modules linked in: netconsole rfcomm fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_raw ip6table_mangle ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_raw iptable_mangle iptable_security ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep arc4 iwlmvm mac80211 intel_rapl x86_pkg_temp_thermal coretemp kvm_intel mei_wdt kvm iwlwifi iTCO_wdt iTCO_vendor_support irqbypass intel_cstate intel_uncore cfg80211 snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic intel_rapl_perf btusb btrtl snd_hda_intel btbcm snd_hda_codec joydev btintel rtsx_pci_ms intel_pch_thermal bluetooth mei_me i2c_i801 snd_hwdep snd_hda_core i2c_smbus memstick snd_seq mei lpc_ich snd_seq_device shpchp snd_pcm thinkpad_acpi wmi snd_timer snd rfkill tpm_tis soundcore tpm_tis_core intel_rst nfsd tpm auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc dm_crypt hid_logitech_hidpp hid_logitech_dj hid_microsoft i915 i2c_algo_bit drm_kms_helper rtsx_pci_sdmmc mmc_core drm crct10dif_pclmul crc32_pclmul crc32c_intel e1000e ghash_clmulni_intel rtsx_pci ptp serio_raw pps_core video fjes [ 427.267039] CPU: 1 PID: 113 Comm: kworker/u16:2 Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 427.267066] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 427.267099] task: ffff97cca9373b80 task.stack: ffffa335011f8000 [ 427.267118] RIP: 0010:[] [] __wake_up_common+0x25/0x80 [ 427.267149] RSP: 0018:ffffa335011fbe40 EFLAGS: 00010082 [ 427.267167] RAX: 000000009f9f0fe3 RBX: ffffa335011fbf00 RCX: 0000000000000000 [ 427.267190] RDX: 000000009f9f0ffb RSI: 0000000000000003 RDI: ffffa335011fbf00 [ 427.267212] RBP: ffffa335011fbe78 R08: 0000000000000000 R09: ffff97cca5a20940 [ 427.267234] R10: ffff97ccb1011e00 R11: 000000000000039d R12: ffffa335011fbef8 [ 427.267256] R13: 0000000000000282 R14: 0000000000000001 R15: 0000000000000000 [ 427.267280] FS: 0000000000000000(0000) GS:ffff97ccbd840000(0000) knlGS:0000000000000000 [ 427.267305] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 427.267325] CR2: 0000000000000028 CR3: 0000000145e08000 CR4: 00000000003406e0 [ 427.267346] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 427.268909] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 427.270390] Stack: [ 427.271841] 00000001011fbe98 0000000000000000 ffffa335011fbf00 ffffa335011fbef8 [ 427.273271] 0000000000000282 0000000000000001 0000000000000000 ffffa335011fbe88 [ 427.274925] ffffffffa30e7743 ffffa335011fbeb0 ffffffffa30e81b7 ffff97cca9374290 [ 427.276369] Call Trace: [ 427.277744] [] __wake_up_locked+0x13/0x20 [ 427.279036] [] complete+0x37/0x50 [ 427.280312] [] mm_release+0xbf/0x140 [ 427.281502] [] do_exit+0x14e/0xb10 [ 427.282851] [] rewind_stack_do_exit+0x17/0x20 [ 427.284036] Code: 00 0f 1f 44 00 00 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 10 89 55 cc 48 8b 57 18 4c 89 45 d0 48 8d 42 e8 <4c> 8b 02 48 39 c7 74 43 49 89 fc 41 89 f7 41 89 ce 4d 8d 68 e8 [ 427.285504] RIP [] __wake_up_common+0x25/0x80 [ 427.286753] RSP [ 427.287981] CR2: 000000009f9f0ffb [ 427.289422] ---[ end trace e0675490795d08d7 ]--- [ 427.289426] Fixing recursive fault but reboot is needed! [ 427.289429] BUG: scheduling while atomic: kworker/u16:2/113/0x00000003 [ 427.289431] Modules linked in: netconsole rfcomm fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_raw ip6table_mangle ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_raw iptable_mangle iptable_security ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep arc4 iwlmvm mac80211 intel_rapl x86_pkg_temp_thermal coretemp kvm_intel mei_wdt kvm iwlwifi iTCO_wdt iTCO_vendor_support irqbypass intel_cstate intel_uncore cfg80211 snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic intel_rapl_perf btusb btrtl snd_hda_intel btbcm snd_hda_codec joydev btintel rtsx_pci_ms intel_pch_thermal bluetooth mei_me i2c_i801 snd_hwdep snd_hda_core i2c_smbus memstick snd_seq mei lpc_ich snd_seq_device shpchp snd_pcm thinkpad_acpi wmi snd_timer snd rfkill tpm_tis soundcore tpm_tis_core intel_rst nfsd tpm auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc dm_crypt hid_logitech_hidpp hid_logitech_dj hid_microsoft i915 i2c_algo_bit drm_kms_helper rtsx_pci_sdmmc mmc_core drm crct10dif_pclmul crc32_pclmul crc32c_intel e1000e ghash_clmulni_intel rtsx_pci ptp serio_raw pps_core video fjes [ 427.289937] CPU: 1 PID: 113 Comm: kworker/u16:2 Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 427.289940] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 427.289950] ffffa335011fbe50 ffffffffa33ef4c0 0000000000000000 ffff97ccbd859880 [ 427.289960] ffffa335011fbe60 ffffffffa30caac4 ffffa335011fbeb8 ffffffffa3807f8e [ 427.289970] ffffffffa31bbef3 00ffa33500000008 ffff97ccbd859880 ffffa335011fbe98 [ 427.289980] Call Trace: [ 427.289985] [] dump_stack+0x63/0x83 [ 427.289990] [] __schedule_bug+0x54/0x70 [ 427.289993] [] __schedule+0x54e/0x6d0 [ 427.289997] [] ? printk+0x57/0x73 [ 427.290000] [] schedule+0x3d/0x90 [ 427.290004] [] do_exit+0x8d3/0xb10 [ 427.290007] [] rewind_stack_do_exit+0x17/0x20 [ 427.290014] BUG: unable to handle kernel paging request at ffffffffffffffc8 [ 427.291319] IP: [] kthread_data+0x10/0x20 [ 427.292606] PGD 145e0b067 [ 427.292616] PUD 145e0d067 PMD 0 [ 427.293892] [ 427.295636] Oops: 0000 [#3] SMP [ 427.297837] Modules linked in: netconsole rfcomm fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_raw ip6table_mangle ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_raw iptable_mangle iptable_security ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep arc4 iwlmvm mac80211 intel_rapl x86_pkg_temp_thermal coretemp kvm_intel mei_wdt kvm iwlwifi iTCO_wdt iTCO_vendor_support irqbypass intel_cstate intel_uncore cfg80211 snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic intel_rapl_perf btusb btrtl snd_hda_intel btbcm snd_hda_codec joydev btintel rtsx_pci_ms intel_pch_thermal bluetooth mei_me i2c_i801 snd_hwdep snd_hda_core i2c_smbus memstick snd_seq mei lpc_ich snd_seq_device shpchp snd_pcm thinkpad_acpi wmi snd_timer snd rfkill tpm_tis soundcore tpm_tis_core intel_rst nfsd tpm auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc dm_crypt hid_logitech_hidpp hid_logitech_dj hid_microsoft i915 i2c_algo_bit drm_kms_helper rtsx_pci_sdmmc mmc_core drm crct10dif_pclmul crc32_pclmul crc32c_intel e1000e ghash_clmulni_intel rtsx_pci ptp serio_raw pps_core video fjes [ 427.313685] CPU: 1 PID: 113 Comm: kworker/u16:2 Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 427.316375] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 427.319091] task: ffff97cca9373b80 task.stack: ffffa335011f8000 [ 427.321802] RIP: 0010:[] [] kthread_data+0x10/0x20 [ 427.324528] RSP: 0018:ffffa335011fbe50 EFLAGS: 00010002 [ 427.327237] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 427.329961] RDX: ffff97ccb5005000 RSI: ffff97cca9373c00 RDI: ffff97cca9373b80 [ 427.332692] RBP: ffffa335011fbe50 R08: ffff97cca9373c28 R09: 000000637c6fb44b [ 427.335427] R10: 00000000000bc800 R11: ffff97cca9373c00 R12: ffff97ccbd859880 [ 427.338165] R13: ffff97cca9373b80 R14: ffff97cca9374140 R15: 0000000000000000 [ 427.340909] FS: 0000000000000000(0000) GS:ffff97ccbd840000(0000) knlGS:0000000000000000 [ 427.343689] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 427.346470] CR2: 0000000000000028 CR3: 0000000145e08000 CR4: 00000000003406e0 [ 427.349204] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 427.351873] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 427.354524] Stack: [ 427.357168] ffffa335011fbe60 ffffffffa30bf46e ffffa335011fbeb8 ffffffffa3807ee2 [ 427.359860] ffffffffa31bbef3 00ffa33500000008 ffff97ccbd859880 ffffa335011fbe98 [ 427.362550] ffff97cca9373b80 0000000000000009 ffffa335011fbd98 0000000000000009 [ 427.365242] Call Trace: [ 427.367909] [] wq_worker_sleeping+0xe/0x80 [ 427.370522] [] __schedule+0x4a2/0x6d0 [ 427.373056] [] ? printk+0x57/0x73 [ 427.375505] [] schedule+0x3d/0x90 [ 427.377876] [] do_exit+0x8d3/0xb10 [ 427.380160] [] rewind_stack_do_exit+0x17/0x20 [ 427.382371] Code: be 7d 04 00 00 48 c7 c7 b0 0b c4 a3 e8 1a f1 fd ff eb ca 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 8b 87 38 05 00 00 55 48 89 e5 <48> 8b 40 c8 5d c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 [ 427.384978] RIP [] kthread_data+0x10/0x20 [ 427.387261] RSP [ 427.389515] CR2: ffffffffffffffc8 [ 427.391745] ---[ end trace e0675490795d08d8 ]--- [ 427.391749] Fixing recursive fault but reboot is needed! [ 427.391753] BUG: scheduling while atomic: kworker/u16:2/113/0x00000003 [ 427.391757] Modules linked in: netconsole rfcomm fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_raw ip6table_mangle ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_raw iptable_mangle iptable_security ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep arc4 iwlmvm mac80211 intel_rapl x86_pkg_temp_thermal coretemp kvm_intel mei_wdt kvm iwlwifi iTCO_wdt iTCO_vendor_support irqbypass intel_cstate intel_uncore cfg80211 snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic intel_rapl_perf btusb btrtl snd_hda_intel btbcm snd_hda_codec joydev btintel rtsx_pci_ms intel_pch_thermal bluetooth mei_me i2c_i801 snd_hwdep snd_hda_core i2c_smbus memstick snd_seq mei lpc_ich snd_seq_device shpchp snd_pcm thinkpad_acpi wmi snd_timer snd rfkill tpm_tis soundcore tpm_tis_core intel_rst nfsd tpm auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc dm_crypt hid_logitech_hidpp hid_logitech_dj hid_microsoft i915 i2c_algo_bit drm_kms_helper rtsx_pci_sdmmc mmc_core drm crct10dif_pclmul crc32_pclmul crc32c_intel e1000e ghash_clmulni_intel rtsx_pci ptp serio_raw pps_core video fjes [ 427.392406] CPU: 1 PID: 113 Comm: kworker/u16:2 Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 427.392411] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 427.392422] ffffa335011fbe50 ffffffffa33ef4c0 0000000000000000 ffff97ccbd859880 [ 427.392438] ffffa335011fbe60 ffffffffa30caac4 ffffa335011fbeb8 ffffffffa3807f8e [ 427.392454] ffffffffa31bbef3 00ffa33500000008 ffff97ccbd859880 ffffa335011fbe98 [ 427.392471] Call Trace: [ 427.392477] [] dump_stack+0x63/0x83 [ 427.392483] [] __schedule_bug+0x54/0x70 [ 427.392487] [] __schedule+0x54e/0x6d0 [ 427.392493] [] ? printk+0x57/0x73 [ 427.392498] [] schedule+0x3d/0x90 [ 427.392503] [] do_exit+0x8d3/0xb10 [ 427.392508] [] rewind_stack_do_exit+0x17/0x20 [ 496.513317] BUG: spinlock lockup suspected on CPU#0, systemd-journal/812 [ 496.513327] lock: 0xffff97ccbd859880, .magic: dead4ead, .owner: kworker/u16:2/113, .owner_cpu: 1 [ 496.513332] CPU: 0 PID: 812 Comm: systemd-journal Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.513337] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.513341] ffffa33501277940 ffffffffa33ef4c0 ffff97cca9373b80 ffff97ccbd859880 [ 496.513357] ffffa33501277960 ffffffffa30f1998 ffff97ccbd859880 0000000088e75d00 [ 496.513373] ffffa33501277990 ffffffffa30f1ad0 0000000000000092 00000000000001e5 [ 496.513391] Call Trace: [ 496.513398] [] dump_stack+0x63/0x83 [ 496.513404] [] spin_dump+0x78/0xd0 [ 496.513408] [] do_raw_spin_lock+0xa0/0x160 [ 496.513414] [] _raw_spin_lock_irqsave+0x27/0x30 [ 496.513419] [] load_balance+0x2fc/0x9c0 [ 496.513426] [] ? sched_clock_cpu+0xa7/0xc0 [ 496.513432] [] pick_next_task_fair+0x2a5/0x4e0 [ 496.513438] [] __schedule+0xd9/0x6d0 [ 496.513445] [] ? bit_wait+0x60/0x60 [ 496.513452] [] schedule+0x3d/0x90 [ 496.513459] [] schedule_timeout+0x22e/0x410 [ 496.513466] [] ? ktime_get+0x41/0xb0 [ 496.513471] [] ? bit_wait+0x60/0x60 [ 496.513477] [] io_schedule_timeout+0xa4/0x110 [ 496.513482] [] bit_wait_io+0x1b/0x60 [ 496.513487] [] __wait_on_bit+0x58/0x90 [ 496.513494] [] wait_on_page_bit+0x82/0xa0 [ 496.513500] [] ? wake_atomic_t_function+0x60/0x60 [ 496.513505] [] __filemap_fdatawait_range+0xff/0x170 [ 496.513511] [] ? __filemap_fdatawrite_range+0xd4/0x100 [ 496.513517] [] filemap_fdatawait_range+0x14/0x30 [ 496.513523] [] filemap_write_and_wait_range+0x5a/0x90 [ 496.513528] [] ext4_sync_file+0xf6/0x3a0 [ 496.513533] [] vfs_fsync_range+0x4b/0xb0 [ 496.513538] [] ? __do_page_fault+0x27d/0x500 [ 496.513543] [] do_fsync+0x3d/0x70 [ 496.513548] [] SyS_fsync+0x10/0x20 [ 496.513553] [] do_syscall_64+0x67/0x180 [ 496.513558] [] entry_SYSCALL64_slow_path+0x25/0x25 [ 496.513563] NMI backtrace for cpu 0 [ 496.513568] CPU: 0 PID: 812 Comm: systemd-journal Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.513572] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.513576] ffffa335012778f8 ffffffffa33ef4c0 0000000000000000 0000000000000000 [ 496.513594] ffffa33501277928 ffffffffa33f3b14 ffffffffa304f890 0000000088e75d00 [ 496.513611] 0000000000000000 0000000088e75d00 ffffa33501277950 ffffffffa33f3bbb [ 496.513627] Call Trace: [ 496.513633] [] dump_stack+0x63/0x83 [ 496.513638] [] nmi_cpu_backtrace+0x94/0xa0 [ 496.513644] [] ? irq_force_complete_move+0xf0/0xf0 [ 496.513649] [] nmi_trigger_cpumask_backtrace+0x9b/0xd0 [ 496.513654] [] arch_trigger_cpumask_backtrace+0x19/0x20 [ 496.513660] [] do_raw_spin_lock+0xae/0x160 [ 496.513665] [] _raw_spin_lock_irqsave+0x27/0x30 [ 496.513670] [] load_balance+0x2fc/0x9c0 [ 496.513675] [] ? sched_clock_cpu+0xa7/0xc0 [ 496.513680] [] pick_next_task_fair+0x2a5/0x4e0 [ 496.513685] [] __schedule+0xd9/0x6d0 [ 496.513691] [] ? bit_wait+0x60/0x60 [ 496.513696] [] schedule+0x3d/0x90 [ 496.513701] [] schedule_timeout+0x22e/0x410 [ 496.513707] [] ? ktime_get+0x41/0xb0 [ 496.513711] [] ? bit_wait+0x60/0x60 [ 496.513716] [] io_schedule_timeout+0xa4/0x110 [ 496.513721] [] bit_wait_io+0x1b/0x60 [ 496.513726] [] __wait_on_bit+0x58/0x90 [ 496.513731] [] wait_on_page_bit+0x82/0xa0 [ 496.513736] [] ? wake_atomic_t_function+0x60/0x60 [ 496.513741] [] __filemap_fdatawait_range+0xff/0x170 [ 496.513750] [] ? __filemap_fdatawrite_range+0xd4/0x100 [ 496.513756] [] filemap_fdatawait_range+0x14/0x30 [ 496.513761] [] filemap_write_and_wait_range+0x5a/0x90 [ 496.513766] [] ext4_sync_file+0xf6/0x3a0 [ 496.513771] [] vfs_fsync_range+0x4b/0xb0 [ 496.513777] [] ? __do_page_fault+0x27d/0x500 [ 496.513782] [] do_fsync+0x3d/0x70 [ 496.513786] [] SyS_fsync+0x10/0x20 [ 496.513792] [] do_syscall_64+0x67/0x180 [ 496.513798] [] entry_SYSCALL64_slow_path+0x25/0x25 [ 496.513803] Sending NMI from CPU 0 to CPUs 1-3: [ 496.514812] NMI watchdog: Watchdog detected hard LOCKUP on cpu 0dModules linked in:c netconsolec rfcommc fusec xt_CHECKSUMc ipt_MASQUERADEc nf_nat_masquerade_ipv4c tunc ip6t_rpfilterc ip6t_REJECTc nf_reject_ipv6c xt_conntrackc ip_setc nfnetlinkc ebtable_natc ebtable_broutec bridgec stpc llcc ip6table_natc nf_conntrack_ipv6c nf_defrag_ipv6c nf_nat_ipv6c ip6table_rawc ip6table_manglec ip6table_securityc iptable_natc nf_conntrack_ipv4c nf_defrag_ipv4c nf_nat_ipv4c nf_natc nf_conntrackc iptable_rawc iptable_manglec iptable_securityc ebtable_filterc ebtablesc ip6table_filterc ip6_tablesc cmacc bnepc arc4c iwlmvmc mac80211c intel_raplc x86_pkg_temp_thermalc coretempc kvm_intelc mei_wdtc kvmc iwlwific iTCO_wdtc iTCO_vendor_supportc irqbypassc intel_cstatec intel_uncorec cfg80211c snd_hda_codec_realtekc snd_hda_codec_hdmic snd_hda_codec_genericc intel_rapl_perfc btusbc btrtlc snd_hda_intelc btbcmc snd_hda_codecc joydevc btintel [ 496.514822] CPU: 0 PID: 812 Comm: systemd-journal Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.514826] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.514830] ffff97ccbd805b50c ffffffffa33ef4c0c 0000000000000000c ffff97ccbd805ef8c [ 496.514835] ffff97ccbd805b68c ffffffffa3163d66c ffff97ccb501e000c ffff97ccbd805ba0c [ 496.514841] ffffffffa31a9d53c 0000000000000001c ffff97ccbd80a380c ffff97ccb501e000c [ 496.514847] Call Trace: [ 496.514852] [] dump_stack+0x63/0x83 [ 496.514856] [] watchdog_overflow_callback+0xb6/0xe0 [ 496.515066] [] __perf_event_overflow+0x83/0x1e0 [ 496.515071] [] perf_event_overflow+0x14/0x20 [ 496.515075] [] intel_pmu_handle_irq+0x1d5/0x490 [ 496.515078] [] perf_event_nmi_handler+0x2c/0x50 [ 496.515082] [] nmi_handle+0x71/0x130 [ 496.515086] [] default_do_nmi+0x53/0x100 [ 496.515090] [] do_nmi+0xec/0x140 [ 496.515094] [] end_repeat_nmi+0x1a/0x1e [ 496.515098] [] ? delay_tsc+0x2c/0x70 [ 496.515101] [] ? delay_tsc+0x2c/0x70 [ 496.515105] [] ? delay_tsc+0x2c/0x70 [ 496.515109] [] __delay+0xf/0x20 [ 496.515113] [] do_raw_spin_lock+0x8c/0x160 [ 496.515116] [] _raw_spin_lock_irqsave+0x27/0x30 [ 496.515120] [] load_balance+0x2fc/0x9c0 [ 496.515124] [] ? sched_clock_cpu+0xa7/0xc0 [ 496.515128] [] pick_next_task_fair+0x2a5/0x4e0 [ 496.515131] [] __schedule+0xd9/0x6d0 [ 496.515135] [] ? bit_wait+0x60/0x60 [ 496.515139] [] schedule+0x3d/0x90 [ 496.515143] [] schedule_timeout+0x22e/0x410 [ 496.515146] [] ? ktime_get+0x41/0xb0 [ 496.515150] [] ? bit_wait+0x60/0x60 [ 496.515154] [] io_schedule_timeout+0xa4/0x110 [ 496.515158] [] bit_wait_io+0x1b/0x60 [ 496.515161] [] __wait_on_bit+0x58/0x90 [ 496.515166] [] wait_on_page_bit+0x82/0xa0 [ 496.515170] [] ? wake_atomic_t_function+0x60/0x60 [ 496.515173] [] __filemap_fdatawait_range+0xff/0x170 [ 496.515177] [] ? __filemap_fdatawrite_range+0xd4/0x100 [ 496.515181] [] filemap_fdatawait_range+0x14/0x30 [ 496.515184] [] filemap_write_and_wait_range+0x5a/0x90 [ 496.515188] [] ext4_sync_file+0xf6/0x3a0 [ 496.515192] [] vfs_fsync_range+0x4b/0xb0 [ 496.515196] [] ? __do_page_fault+0x27d/0x500 [ 496.515199] [] do_fsync+0x3d/0x70 [ 496.515203] [] SyS_fsync+0x10/0x20 [ 496.515206] [] do_syscall_64+0x67/0x180 [ 496.515210] [] entry_SYSCALL64_slow_path+0x25/0x25 [ 496.515218] NMI watchdog: Watchdog detected hard LOCKUP on cpu 1dModules linked in:c netconsolec rfcommc fusec xt_CHECKSUMc ipt_MASQUERADEc nf_nat_masquerade_ipv4c tunc ip6t_rpfilterc ip6t_REJECTc nf_reject_ipv6c xt_conntrackc ip_setc nfnetlinkc ebtable_natc ebtable_broutec bridgec stpc llcc ip6table_natc nf_conntrack_ipv6c nf_defrag_ipv6c nf_nat_ipv6c ip6table_rawc ip6table_manglec ip6table_securityc iptable_natc nf_conntrack_ipv4c nf_defrag_ipv4c nf_nat_ipv4c nf_natc nf_conntrackc iptable_rawc iptable_manglec iptable_securityc ebtable_filterc ebtablesc ip6table_filterc ip6_tablesc cmacc bnepc arc4c iwlmvmc mac80211c intel_raplc x86_pkg_temp_thermalc coretempc kvm_intelc mei_wdtc kvmc iwlwific iTCO_wdtc iTCO_vendor_supportc irqbypassc intel_cstatec intel_uncorec cfg80211c snd_hda_codec_realtekc snd_hda_codec_hdmic snd_hda_codec_genericc intel_rapl_perfc btusbc btrtlc snd_hda_intelc btbcmc snd_hda_codecc joydevc btintel [ 496.515227] CPU: 1 PID: 113 Comm: kworker/u16:2 Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.515231] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.515234] ffff97ccbd845b50c ffffffffa33ef4c0c 0000000000000000c ffff97ccbd845ef8c [ 496.515238] ffff97ccbd845b68c ffffffffa3163d66c ffff97ccb4b18000c ffff97ccbd845ba0c [ 496.515242] ffffffffa31a9d53c 0000000000000001c ffff97ccbd84a380c ffff97ccb4b18000c [ 496.515245] Call Trace: [ 496.515249] [] dump_stack+0x63/0x83 [ 496.515253] [] watchdog_overflow_callback+0xb6/0xe0 [ 496.515257] [] __perf_event_overflow+0x83/0x1e0 [ 496.515260] [] perf_event_overflow+0x14/0x20 [ 496.515265] [] intel_pmu_handle_irq+0x1d5/0x490 [ 496.515268] [] perf_event_nmi_handler+0x2c/0x50 [ 496.515272] [] nmi_handle+0x71/0x130 [ 496.515276] [] default_do_nmi+0x53/0x100 [ 496.515280] [] do_nmi+0xec/0x140 [ 496.515283] [] end_repeat_nmi+0x1a/0x1e [ 496.515287] [] ? delay_tsc+0x2a/0x70 [ 496.515291] [] ? delay_tsc+0x2a/0x70 [ 496.515294] [] ? delay_tsc+0x2a/0x70 [ 496.515298] [] __delay+0xf/0x20 [ 496.515302] [] do_raw_spin_lock+0x8c/0x160 [ 496.515306] [] _raw_spin_lock+0x15/0x20 [ 496.515309] [] __schedule+0x86/0x6d0 [ 496.515313] [] ? printk+0x57/0x73 [ 496.515316] [] schedule+0x3d/0x90 [ 496.515320] [] do_exit+0x8d3/0xb10 [ 496.515324] [] rewind_stack_do_exit+0x17/0x20 [ 496.515328] NMI backtrace for cpu 1 [ 496.515331] CPU: 1 PID: 113 Comm: kworker/u16:2 Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.515336] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.515339] task: ffff97cca9373b80 task.stack: ffffa335011f8000 [ 496.515343] RIP: 0010:[] c [] delay_tsc+0x1d/0x70 [ 496.515347] RSP: 0018:ffffa335011fbe10 EFLAGS: 00000086 [ 496.515351] RAX: 00000000a47360c3 RBX: ffff97ccbd859880 RCX: 0000000000000018 [ 496.515355] RDX: 000000000000010f RSI: 0000010fa473607c RDI: 0000000000000001 [ 496.515358] RBP: ffffa335011fbe10 R08: 0000000000000001 R09: ffff97cca5a20940 [ 496.515362] R10: 00000000000bc800 R11: 000000000000040c R12: 0000000088bca680 [ 496.515366] R13: 0000000000000001 R14: 0000000088e75d00 R15: 0000000000000000 [ 496.515370] FS: 0000000000000000(0000) GS:ffff97ccbd840000(0000) knlGS:0000000000000000 [ 496.515374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 496.515378] CR2: 0000000000000028 CR3: 0000000145e08000 CR4: 00000000003406e0 [ 496.515382] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 496.515386] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 496.515389] Stack: [ 496.515393] ffffa335011fbe20c ffffffffa33fcddfc ffffa335011fbe50c ffffffffa30f1abcc [ 496.515397] 0000000000000000c ffff97ccbd859880c ffff97cca9373b80c ffff97cca9374140c [ 496.515402] ffffa335011fbe60c ffffffffa380ddd5c ffffa335011fbeb8c ffffffffa3807ac6c [ 496.515406] Call Trace: [ 496.515410] [] __delay+0xf/0x20 [ 496.515413] [] do_raw_spin_lock+0x8c/0x160 [ 496.515417] [] _raw_spin_lock+0x15/0x20 [ 496.515421] [] __schedule+0x86/0x6d0 [ 496.515425] [] ? printk+0x57/0x73 [ 496.515429] [] schedule+0x3d/0x90 [ 496.515433] [] do_exit+0x8d3/0xb10 [ 496.515436] [] rewind_stack_do_exit+0x17/0x20 [ 496.515441] Code: c48 c8d c7a c01 cff c15 ccc ce6 cab c00 c5d cc3 c66 c90 c0f c1f c44 c00 c00 c55 c65 cff c05 c03 c04 cc1 c5c c48 c89 ce5 c65 c44 c8b c05 c90 cd2 cc0 c5c c0f cae ce8 c0f c31 c<48> cc1 ce2 c20 c48 c89 cd6 c48 c09 cc6 c0f cae ce8 c0f c31 c48 cc1 ce2 c20 c48 c09 c [ 496.515452] NMI watchdog: Watchdog detected hard LOCKUP on cpu 2dModules linked in:c netconsolec rfcommc fusec xt_CHECKSUMc ipt_MASQUERADEc nf_nat_masquerade_ipv4c tunc ip6t_rpfilterc ip6t_REJECTc nf_reject_ipv6c xt_conntrackc ip_setc nfnetlinkc ebtable_natc ebtable_broutec bridgec stpc llcc ip6table_natc nf_conntrack_ipv6c nf_defrag_ipv6c nf_nat_ipv6c ip6table_rawc ip6table_manglec ip6table_securityc iptable_natc nf_conntrack_ipv4c nf_defrag_ipv4c nf_nat_ipv4c nf_natc nf_conntrackc iptable_rawc iptable_manglec iptable_securityc ebtable_filterc ebtablesc ip6table_filterc ip6_tablesc cmacc bnepc arc4c iwlmvmc mac80211c intel_raplc x86_pkg_temp_thermalc coretempc kvm_intelc mei_wdtc kvmc iwlwific iTCO_wdtc iTCO_vendor_supportc irqbypassc intel_cstatec intel_uncorec cfg80211c snd_hda_codec_realtekc snd_hda_codec_hdmic snd_hda_codec_genericc intel_rapl_perfc btusbc btrtlc snd_hda_intelc btbcmc snd_hda_codecc joydevc btintel [ 496.515460] CPU: 2 PID: 837 Comm: kworker/u16:5 Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.515464] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.515469] ffff97ccbd885b50c ffffffffa33ef4c0c 0000000000000000c ffff97ccbd885ef8c [ 496.515473] ffff97ccbd885b68c ffffffffa3163d66c ffff97ccb48c8000c ffff97ccbd885ba0c [ 496.515477] ffffffffa31a9d53c 0000000000000001c ffff97ccbd88a380c ffff97ccb48c8000c [ 496.515480] Call Trace: [ 496.515485] [] dump_stack+0x63/0x83 [ 496.515488] [] watchdog_overflow_callback+0xb6/0xe0 [ 496.515492] [] __perf_event_overflow+0x83/0x1e0 [ 496.515496] [] perf_event_overflow+0x14/0x20 [ 496.515501] [] intel_pmu_handle_irq+0x1d5/0x490 [ 496.515504] [] perf_event_nmi_handler+0x2c/0x50 [ 496.515508] [] nmi_handle+0x71/0x130 [ 496.515512] [] default_do_nmi+0x53/0x100 [ 496.515515] [] do_nmi+0xec/0x140 [ 496.515519] [] end_repeat_nmi+0x1a/0x1e [ 496.515523] [] ? delay_tsc+0x1d/0x70 [ 496.515526] [] ? delay_tsc+0x1d/0x70 [ 496.515530] [] ? delay_tsc+0x1d/0x70 [ 496.515534] [] __delay+0xf/0x20 [ 496.515538] [] do_raw_spin_lock+0x8c/0x160 [ 496.515542] [] _raw_spin_lock_irqsave+0x27/0x30 [ 496.515545] [] load_balance+0x2fc/0x9c0 [ 496.515549] [] ? sched_clock_cpu+0xa7/0xc0 [ 496.515552] [] pick_next_task_fair+0x2a5/0x4e0 [ 496.515556] [] __schedule+0xd9/0x6d0 [ 496.515560] [] schedule+0x3d/0x90 [ 496.515564] [] worker_thread+0xc5/0x480 [ 496.515568] [] ? process_one_work+0x430/0x430 [ 496.515572] [] ? process_one_work+0x430/0x430 [ 496.515576] [] kthread+0xee/0x110 [ 496.515580] [] ? kthread_park+0x60/0x60 [ 496.515583] [] ret_from_fork+0x25/0x30 [ 496.515587] NMI backtrace for cpu 2 [ 496.515591] CPU: 2 PID: 837 Comm: kworker/u16:5 Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.515595] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.515599] task: ffff97cca8e4bb80 task.stack: ffffa3350141c000 [ 496.515603] RIP: 0010:[] c [] delay_tsc+0x1d/0x70 [ 496.515606] RSP: 0018:ffffa3350141fbe8 EFLAGS: 00000082 [ 496.515611] RAX: 00000000a47360ea RBX: ffff97ccbd859880 RCX: 0000000000000018 [ 496.515615] RDX: 000000000000010f RSI: 0000010fa47360a3 RDI: 0000000000000001 [ 496.515618] RBP: ffffa3350141fbe8 R08: 0000000000000002 R09: 0000000000000003 [ 496.515622] R10: 00000000000000f2 R11: 000000000000049a R12: 0000000087105412 [ 496.515626] R13: 0000000000000001 R14: 0000000088e75d00 R15: 0000000000000002 [ 496.515630] FS: 0000000000000000(0000) GS:ffff97ccbd880000(0000) knlGS:0000000000000000 [ 496.515634] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 496.515637] CR2: 00000000000000d8 CR3: 0000000145e08000 CR4: 00000000003406e0 [ 496.515642] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 496.515646] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 496.515650] Stack: [ 496.515654] ffffa3350141fbf8c ffffffffa33fcddfc ffffa3350141fc28c ffffffffa30f1abcc [ 496.515658] 0000000000000086c 00000000000001e5c 000000000000024dc ffff97ccbd899880c [ 496.515662] ffffa3350141fc40c ffffffffa380e1b7c ffff97ccb43737f8c ffffa3350141fd58c [ 496.515665] Call Trace: [ 496.515669] [] __delay+0xf/0x20 [ 496.515673] [] do_raw_spin_lock+0x8c/0x160 [ 496.515677] [] _raw_spin_lock_irqsave+0x27/0x30 [ 496.515681] [] load_balance+0x2fc/0x9c0 [ 496.515685] [] ? sched_clock_cpu+0xa7/0xc0 [ 496.515689] [] pick_next_task_fair+0x2a5/0x4e0 [ 496.515693] [] __schedule+0xd9/0x6d0 [ 496.515697] [] schedule+0x3d/0x90 [ 496.515701] [] worker_thread+0xc5/0x480 [ 496.515704] [] ? process_one_work+0x430/0x430 [ 496.515710] [] ? process_one_work+0x430/0x430 [ 496.515715] [] kthread+0xee/0x110 [ 496.515720] [] ? kthread_park+0x60/0x60 [ 496.515726] [] ret_from_fork+0x25/0x30 [ 496.515731] Code: c48 c8d c7a c01 cff c15 ccc ce6 cab c00 c5d cc3 c66 c90 c0f c1f c44 c00 c00 c55 c65 cff c05 c03 c04 cc1 c5c c48 c89 ce5 c65 c44 c8b c05 c90 cd2 cc0 c5c c0f cae ce8 c0f c31 c<48> cc1 ce2 c20 c48 c89 cd6 c48 c09 cc6 c0f cae ce8 c0f c31 c48 cc1 ce2 c20 c48 c09 c [ 496.515742] NMI watchdog: Watchdog detected hard LOCKUP on cpu 3dModules linked in:c netconsolec rfcommc fusec xt_CHECKSUMc ipt_MASQUERADEc nf_nat_masquerade_ipv4c tunc ip6t_rpfilterc ip6t_REJECTc nf_reject_ipv6c xt_conntrackc ip_setc nfnetlinkc ebtable_natc ebtable_broutec bridgec stpc llcc ip6table_natc nf_conntrack_ipv6c nf_defrag_ipv6c nf_nat_ipv6c ip6table_rawc ip6table_manglec ip6table_securityc iptable_natc nf_conntrack_ipv4c nf_defrag_ipv4c nf_nat_ipv4c nf_natc nf_conntrackc iptable_rawc iptable_manglec iptable_securityc ebtable_filterc ebtablesc ip6table_filterc ip6_tablesc cmacc bnepc arc4c iwlmvmc mac80211c intel_raplc x86_pkg_temp_thermalc coretempc kvm_intelc mei_wdtc kvmc iwlwific iTCO_wdtc iTCO_vendor_supportc irqbypassc intel_cstatec intel_uncorec cfg80211c snd_hda_codec_realtekc snd_hda_codec_hdmic snd_hda_codec_genericc intel_rapl_perfc btusbc btrtlc snd_hda_intelc btbcmc snd_hda_codecc joydevc btintel [ 496.515753] CPU: 3 PID: 7 Comm: rcu_sched Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.515758] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.515763] ffff97ccbd8c5b50c ffffffffa33ef4c0c 0000000000000000c ffff97ccbd8c5ef8c [ 496.515768] ffff97ccbd8c5b68c ffffffffa3163d66c ffff97ccb4230000c ffff97ccbd8c5ba0c [ 496.515772] ffffffffa31a9d53c 0000000000000001c ffff97ccbd8ca380c ffff97ccb4230000c [ 496.515776] Call Trace: [ 496.515780] [] dump_stack+0x63/0x83 [ 496.515784] [] watchdog_overflow_callback+0xb6/0xe0 [ 496.515788] [] __perf_event_overflow+0x83/0x1e0 [ 496.515791] [] perf_event_overflow+0x14/0x20 [ 496.515797] [] intel_pmu_handle_irq+0x1d5/0x490 [ 496.515802] [] perf_event_nmi_handler+0x2c/0x50 [ 496.515805] [] nmi_handle+0x71/0x130 [ 496.515809] [] default_do_nmi+0x53/0x100 [ 496.515814] [] do_nmi+0xec/0x140 [ 496.515818] [] end_repeat_nmi+0x1a/0x1e [ 496.515823] [] ? __delay+0x9/0x20 [ 496.515827] [] ? __delay+0x9/0x20 [ 496.515833] [] ? __delay+0x9/0x20 [ 496.515837] [] do_raw_spin_lock+0x8c/0x160 [ 496.515841] [] _raw_spin_lock_irqsave+0x27/0x30 [ 496.515845] [] load_balance+0x2fc/0x9c0 [ 496.515849] [] ? sched_clock_cpu+0xa7/0xc0 [ 496.515853] [] pick_next_task_fair+0x2a5/0x4e0 [ 496.515856] [] __schedule+0xd9/0x6d0 [ 496.515860] [] schedule+0x3d/0x90 [ 496.515865] [] schedule_timeout+0x1e3/0x410 [ 496.515870] [] ? rcu_report_qs_rnp+0xf0/0x180 [ 496.515874] [] ? del_timer_sync+0x50/0x50 [ 496.515880] [] rcu_gp_kthread+0x4f5/0x8b0 [ 496.515884] [] ? synchronize_sched_expedited.part.54+0x10/0x10 [ 496.515889] [] kthread+0xee/0x110 [ 496.515893] [] ? kthread_park+0x60/0x60 [ 496.515897] [] ret_from_fork+0x25/0x30 [ 496.515901] NMI backtrace for cpu 3 [ 496.515905] CPU: 3 PID: 7 Comm: rcu_sched Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.515909] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.515915] task: ffff97ccb3263b80 task.stack: ffffa33500cac000 [ 496.515919] RIP: 0010:[] c [] do_raw_spin_lock+0x8c/0x160 [ 496.515923] RSP: 0018:ffffa33500cafb40 EFLAGS: 00000086 [ 496.515928] RAX: 0000010fa47360cd RBX: ffff97ccbd859880 RCX: 000000000000001b [ 496.515932] RDX: 0000010f00000000 RSI: 0000010fa47360b2 RDI: 0000000000000001 [ 496.515936] RBP: ffffa33500cafb60 R08: 0000000000000003 R09: 0000000000000003 [ 496.515942] R10: 00000000000000f2 R11: 000000000000049a R12: 000000008712fed8 [ 496.515946] R13: 0000000000000001 R14: 0000000088e75d00 R15: 0000000000000003 [ 496.515950] FS: 0000000000000000(0000) GS:ffff97ccbd8c0000(0000) knlGS:0000000000000000 [ 496.515955] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 496.515959] CR2: 00007efda9166010 CR3: 0000000145e08000 CR4: 00000000003406e0 [ 496.515963] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 496.515967] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 496.515970] Stack: [ 496.515974] 0000000000000096c 00000000000001e5c 000000000000024dc ffff97ccbd8d9880c [ 496.515979] ffffa33500cafb78c ffffffffa380e1b7c ffff97ccb43737f8c ffffa33500cafc90c [ 496.515982] ffffffffa30e156cc ffffa33500cafcccc 0000000300000001c 0000000000000000c [ 496.515987] Call Trace: [ 496.515992] [] _raw_spin_lock_irqsave+0x27/0x30 [ 496.515996] [] load_balance+0x2fc/0x9c0 [ 496.515999] [] ? sched_clock_cpu+0xa7/0xc0 [ 496.516004] [] pick_next_task_fair+0x2a5/0x4e0 [ 496.516008] [] __schedule+0xd9/0x6d0 [ 496.516011] [] schedule+0x3d/0x90 [ 496.516015] [] schedule_timeout+0x1e3/0x410 [ 496.516019] [] ? rcu_report_qs_rnp+0xf0/0x180 [ 496.516023] [] ? del_timer_sync+0x50/0x50 [ 496.516027] [] rcu_gp_kthread+0x4f5/0x8b0 [ 496.516031] [] ? synchronize_sched_expedited.part.54+0x10/0x10 [ 496.516305] [] kthread+0xee/0x110 [ 496.516310] [] ? kthread_park+0x60/0x60 [ 496.516313] [] ret_from_fork+0x25/0x30 [ 496.516318] Code: c45 c31 ce4 c41 cbd c01 c00 c00 c00 c4d c85 cf6 c74 c22 c8b c03 c85 cc0 c75 c09 cf0 c44 c0f cb1 c2b c85 cc0 c74 c43 cbf c01 c00 c00 c00 c49 c83 cc4 c01 ce8 c14 cb3 c30 c00 c<4d> c39 ce6 c75 cde c48 c89 cdf c48 cc7 cc6 c44 c24 cc4 ca3 ce8 c50 cfe cff cff c31 c [ 496.603214] BUG: spinlock lockup suspected on CPU#1, kworker/u16:2/113 [ 496.603221] lock: 0xffff97ccbd859880, .magic: dead4ead, .owner: kworker/u16:2/113, .owner_cpu: 1 [ 496.603226] CPU: 1 PID: 113 Comm: kworker/u16:2 Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.603230] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.603242] ffffa335011fbe00 ffffffffa33ef4c0 ffff97cca9373b80 ffff97ccbd859880 [ 496.603259] ffffa335011fbe20 ffffffffa30f1998 ffff97ccbd859880 0000000088e75d00 [ 496.603276] ffffa335011fbe50 ffffffffa30f1ad0 0000000000000000 ffff97ccbd859880 [ 496.603293] Call Trace: [ 496.603299] [] dump_stack+0x63/0x83 [ 496.603304] [] spin_dump+0x78/0xd0 [ 496.603310] [] do_raw_spin_lock+0xa0/0x160 [ 496.603315] [] _raw_spin_lock+0x15/0x20 [ 496.603321] [] __schedule+0x86/0x6d0 [ 496.603327] [] ? printk+0x57/0x73 [ 496.603332] [] schedule+0x3d/0x90 [ 496.603338] [] do_exit+0x8d3/0xb10 [ 496.603343] [] rewind_stack_do_exit+0x17/0x20 [ 496.603349] NMI backtrace for cpu 1 [ 496.603353] CPU: 1 PID: 113 Comm: kworker/u16:2 Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.603357] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.603369] ffffa335011fbdb8 ffffffffa33ef4c0 0000000000000000 0000000000000001 [ 496.603386] ffffa335011fbde8 ffffffffa33f3b14 ffffffffa304f890 0000000088e75d00 [ 496.603403] 0000000000000001 0000000088e75d00 ffffa335011fbe10 ffffffffa33f3bbb [ 496.603421] Call Trace: [ 496.603426] [] dump_stack+0x63/0x83 [ 496.603431] [] nmi_cpu_backtrace+0x94/0xa0 [ 496.603438] [] ? irq_force_complete_move+0xf0/0xf0 [ 496.603443] [] nmi_trigger_cpumask_backtrace+0x9b/0xd0 [ 496.603448] [] arch_trigger_cpumask_backtrace+0x19/0x20 [ 496.603453] [] do_raw_spin_lock+0xae/0x160 [ 496.603459] [] _raw_spin_lock+0x15/0x20 [ 496.603464] [] __schedule+0x86/0x6d0 [ 496.603469] [] ? printk+0x57/0x73 [ 496.603474] [] schedule+0x3d/0x90 [ 496.603479] [] do_exit+0x8d3/0xb10 [ 496.603484] [] rewind_stack_do_exit+0x17/0x20 [ 496.603489] Sending NMI from CPU 1 to CPUs 0,2-3: [ 496.604495] NMI backtrace for cpu 0 [ 496.604499] CPU: 0 PID: 812 Comm: systemd-journal Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.604503] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.604508] task: ffff97cca5dd9dc0 task.stack: ffffa33501274000 [ 496.604512] RIP: 0010:[] c [] queued_spin_lock_slowpath+0x183/0x1a0 [ 496.604516] RSP: 0018:ffffa33501277960 EFLAGS: 00000002 [ 496.604520] RAX: 0000000000000101 RBX: ffff97ccbd859880 RCX: 0000000000000001 [ 496.604524] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff97ccbd859880 [ 496.604528] RBP: ffffa33501277960 R08: 0000000000000101 R09: 00000000000000ff [ 496.604533] R10: 00000000000000f2 R11: 0000000000000550 R12: 0000000088e75d00 [ 496.604537] R13: 0000000000000001 R14: 0000000088e75d00 R15: 0000000000000000 [ 496.604541] FS: 00007efdac136840(0000) GS:ffff97ccbd800000(0000) knlGS:0000000000000000 [ 496.604546] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 496.604550] CR2: 00007efda9966010 CR3: 000000022ab35000 CR4: 00000000003406f0 [ 496.604555] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 496.604559] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 496.604562] Stack: [ 496.604567] ffffa33501277990c ffffffffa30f1b7ec 0000000000000092c 00000000000001e5c [ 496.604571] 000000000000024dc ffff97ccbd819880c ffffa335012779a8c ffffffffa380e1b7c [ 496.604575] ffff97ccb4373738c ffffa33501277ac0c ffffffffa30e156cc ffffa33501277afcc [ 496.604579] Call Trace: [ 496.604583] [] do_raw_spin_lock+0x14e/0x160 [ 496.604587] [] _raw_spin_lock_irqsave+0x27/0x30 [ 496.604591] [] load_balance+0x2fc/0x9c0 [ 496.604595] [] ? sched_clock_cpu+0xa7/0xc0 [ 496.604599] [] pick_next_task_fair+0x2a5/0x4e0 [ 496.604603] [] __schedule+0xd9/0x6d0 [ 496.604607] [] ? bit_wait+0x60/0x60 [ 496.604610] [] schedule+0x3d/0x90 [ 496.604615] [] schedule_timeout+0x22e/0x410 [ 496.604619] [] ? ktime_get+0x41/0xb0 [ 496.604623] [] ? bit_wait+0x60/0x60 [ 496.604627] [] io_schedule_timeout+0xa4/0x110 [ 496.604631] [] bit_wait_io+0x1b/0x60 [ 496.604634] [] __wait_on_bit+0x58/0x90 [ 496.604638] [] wait_on_page_bit+0x82/0xa0 [ 496.604642] [] ? wake_atomic_t_function+0x60/0x60 [ 496.604647] [] __filemap_fdatawait_range+0xff/0x170 [ 496.604652] [] ? __filemap_fdatawrite_range+0xd4/0x100 [ 496.604656] [] filemap_fdatawait_range+0x14/0x30 [ 496.604660] [] filemap_write_and_wait_range+0x5a/0x90 [ 496.604665] [] ext4_sync_file+0xf6/0x3a0 [ 496.604669] [] vfs_fsync_range+0x4b/0xb0 [ 496.604673] [] ? __do_page_fault+0x27d/0x500 [ 496.604677] [] do_fsync+0x3d/0x70 [ 496.604681] [] SyS_fsync+0x10/0x20 [ 496.604684] [] do_syscall_64+0x67/0x180 [ 496.604688] [] entry_SYSCALL64_slow_path+0x25/0x25 [ 496.604693] Code: cc0 c74 ce6 c4d c85 cc9 cc6 c07 c01 c74 c30 c41 cc7 c41 c08 c01 c00 c00 c00 ce9 c52 cff cff cff c83 cfa c01 c0f c84 ca8 cfe cff cff c8b c07 c84 cc0 c74 c08 cf3 c90 c8b c07 c<84> cc0 c75 cf8 cb8 c01 c00 c00 c00 c66 c89 c07 c5d cc3 cf3 c90 c4c c8b c09 c4d c85 c [ 496.604698] NMI backtrace for cpu 2 [ 496.604703] CPU: 2 PID: 837 Comm: kworker/u16:5 Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.604706] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.604710] task: ffff97cca8e4bb80 task.stack: ffffa3350141c000 [ 496.604715] RIP: 0010:[] c [] delay_tsc+0x2c/0x70 [ 496.604719] RSP: 0018:ffffa3350141fbe8 EFLAGS: 00000002 [ 496.604723] RAX: 00000000b0b76c19 RBX: ffff97ccbd859880 RCX: 0000000000000018 [ 496.604727] RDX: 000000000000010f RSI: 0000010fb0b76bfe RDI: 0000000000000001 [ 496.604731] RBP: ffffa3350141fbe8 R08: 0000000000000002 R09: 0000000000000003 [ 496.604735] R10: 00000000000000f2 R11: 000000000000049a R12: 00000000873e5fd3 [ 496.604739] R13: 0000000000000001 R14: 0000000088e75d00 R15: 0000000000000002 [ 496.604743] FS: 0000000000000000(0000) GS:ffff97ccbd880000(0000) knlGS:0000000000000000 [ 496.604747] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 496.604752] CR2: 00000000000000d8 CR3: 0000000145e08000 CR4: 00000000003406e0 [ 496.604756] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 496.604760] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 496.604763] Stack: [ 496.604767] ffffa3350141fbf8c ffffffffa33fcddfc ffffa3350141fc28c ffffffffa30f1abcc [ 496.604772] 0000000000000086c 00000000000001e5c 000000000000024dc ffff97ccbd899880c [ 496.604776] ffffa3350141fc40c ffffffffa380e1b7c ffff97ccb43737f8c ffffa3350141fd58c [ 496.604781] Call Trace: [ 496.604785] [] __delay+0xf/0x20 [ 496.604789] [] do_raw_spin_lock+0x8c/0x160 [ 496.604793] [] _raw_spin_lock_irqsave+0x27/0x30 [ 496.604797] [] load_balance+0x2fc/0x9c0 [ 496.604801] [] ? sched_clock_cpu+0xa7/0xc0 [ 496.604805] [] pick_next_task_fair+0x2a5/0x4e0 [ 496.604809] [] __schedule+0xd9/0x6d0 [ 496.604813] [] schedule+0x3d/0x90 [ 496.604817] [] worker_thread+0xc5/0x480 [ 496.604821] [] ? process_one_work+0x430/0x430 [ 496.604824] [] ? process_one_work+0x430/0x430 [ 496.604828] [] kthread+0xee/0x110 [ 496.604832] [] ? kthread_park+0x60/0x60 [ 496.604836] [] ret_from_fork+0x25/0x30 [ 496.604840] Code: c1f c44 c00 c00 c55 c65 cff c05 c03 c04 cc1 c5c c48 c89 ce5 c65 c44 c8b c05 c90 cd2 cc0 c5c c0f cae ce8 c0f c31 c48 cc1 ce2 c20 c48 c89 cd6 c48 c09 cc6 c0f cae ce8 c0f c31 c<48> cc1 ce2 c20 c48 c09 cd0 c48 c89 cc1 c48 c29 cf1 c48 c39 cf9 c73 c27 c65 cff c0d c [ 496.604845] NMI backtrace for cpu 3 [ 496.604849] CPU: 3 PID: 7 Comm: rcu_sched Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 496.604853] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 496.604857] task: ffff97ccb3263b80 task.stack: ffffa33500cac000 [ 496.604861] RIP: 0010:[] c [] delay_tsc+0x2a/0x70 [ 496.604866] RSP: 0018:ffffa33500cafb20 EFLAGS: 00000002 [ 496.604870] RAX: 00000000b0b76c10 RBX: ffff97ccbd859880 RCX: 000000000000001b [ 496.604874] RDX: 0000010f00000000 RSI: 0000010fb0b76c10 RDI: 0000000000000001 [ 496.604878] RBP: ffffa33500cafb20 R08: 0000000000000003 R09: 0000000000000003 [ 496.604882] R10: 00000000000000f2 R11: 000000000000049a R12: 0000000087410aa4 [ 496.604886] R13: 0000000000000001 R14: 0000000088e75d00 R15: 0000000000000003 [ 496.604889] FS: 0000000000000000(0000) GS:ffff97ccbd8c0000(0000) knlGS:0000000000000000 [ 496.604893] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 496.604898] CR2: 00007efda9166010 CR3: 0000000145e08000 CR4: 00000000003406e0 [ 496.604902] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 496.604905] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 496.604909] Stack: [ 496.604913] ffffa33500cafb30c ffffffffa33fcddfc ffffa33500cafb60c ffffffffa30f1abcc [ 496.604917] 0000000000000096c 00000000000001e5c 000000000000024dc ffff97ccbd8d9880c [ 496.604921] ffffa33500cafb78c ffffffffa380e1b7c ffff97ccb43737f8c ffffa33500cafc90c [ 496.604925] Call Trace: [ 496.604929] [] __delay+0xf/0x20 [ 496.604933] [] do_raw_spin_lock+0x8c/0x160 [ 496.604937] [] _raw_spin_lock_irqsave+0x27/0x30 [ 496.604941] [] load_balance+0x2fc/0x9c0 [ 496.604944] [] ? sched_clock_cpu+0xa7/0xc0 [ 496.604948] [] pick_next_task_fair+0x2a5/0x4e0 [ 496.604952] [] __schedule+0xd9/0x6d0 [ 496.604956] [] schedule+0x3d/0x90 [ 496.604960] [] schedule_timeout+0x1e3/0x410 [ 496.604965] [] ? rcu_report_qs_rnp+0xf0/0x180 [ 496.604969] [] ? del_timer_sync+0x50/0x50 [ 496.604973] [] rcu_gp_kthread+0x4f5/0x8b0 [ 496.604977] [] ? synchronize_sched_expedited.part.54+0x10/0x10 [ 496.604981] [] kthread+0xee/0x110 [ 496.604985] [] ? kthread_park+0x60/0x60 [ 496.604990] [] ret_from_fork+0x25/0x30 [ 496.604994] Code: c90 c0f c1f c44 c00 c00 c55 c65 cff c05 c03 c04 cc1 c5c c48 c89 ce5 c65 c44 c8b c05 c90 cd2 cc0 c5c c0f cae ce8 c0f c31 c48 cc1 ce2 c20 c48 c89 cd6 c48 c09 cc6 c0f cae ce8 c<0f> c31 c48 cc1 ce2 c20 c48 c09 cd0 c48 c89 cc1 c48 c29 cf1 c48 c39 cf9 c73 c27 c65 c [ 497.448987] BUG: spinlock lockup suspected on CPU#3, rcu_sched/7 [ 497.449001] lock: 0xffff97ccbd859880, .magic: dead4ead, .owner: kworker/u16:2/113, .owner_cpu: 1 [ 497.449006] CPU: 3 PID: 7 Comm: rcu_sched Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 497.449010] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 497.449014] ffffa33500cafb10 ffffffffa33ef4c0 ffff97cca9373b80 ffff97ccbd859880 [ 497.449031] ffffa33500cafb30 ffffffffa30f1998 ffff97ccbd859880 0000000088e75d00 [ 497.449048] ffffa33500cafb60 ffffffffa30f1ad0 0000000000000096 00000000000001e5 [ 497.449064] Call Trace: [ 497.449070] [] dump_stack+0x63/0x83 [ 497.449075] [] spin_dump+0x78/0xd0 [ 497.449082] [] do_raw_spin_lock+0xa0/0x160 [ 497.449088] [] _raw_spin_lock_irqsave+0x27/0x30 [ 497.449093] [] load_balance+0x2fc/0x9c0 [ 497.449098] [] ? sched_clock_cpu+0xa7/0xc0 [ 497.449103] [] pick_next_task_fair+0x2a5/0x4e0 [ 497.449108] [] __schedule+0xd9/0x6d0 [ 497.449114] [] schedule+0x3d/0x90 [ 497.449120] [] schedule_timeout+0x1e3/0x410 [ 497.449125] [] ? rcu_report_qs_rnp+0xf0/0x180 [ 497.449130] [] ? del_timer_sync+0x50/0x50 [ 497.449135] [] rcu_gp_kthread+0x4f5/0x8b0 [ 497.449140] [] ? synchronize_sched_expedited.part.54+0x10/0x10 [ 497.449146] [] kthread+0xee/0x110 [ 497.449152] [] ? kthread_park+0x60/0x60 [ 497.449157] [] ret_from_fork+0x25/0x30 [ 497.449162] NMI backtrace for cpu 3 [ 497.449166] CPU: 3 PID: 7 Comm: rcu_sched Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 497.449170] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 497.449174] ffffa33500cafac8 ffffffffa33ef4c0 0000000000000000 0000000000000003 [ 497.449194] ffffa33500cafaf8 ffffffffa33f3b14 ffffffffa304f890 0000000088e75d00 [ 497.449505] 0000000000000003 0000000088e75d00 ffffa33500cafb20 ffffffffa33f3bbb [ 497.449521] Call Trace: [ 497.449527] [] dump_stack+0x63/0x83 [ 497.449532] [] nmi_cpu_backtrace+0x94/0xa0 [ 497.449538] [] ? irq_force_complete_move+0xf0/0xf0 [ 497.449543] [] nmi_trigger_cpumask_backtrace+0x9b/0xd0 [ 497.449548] [] arch_trigger_cpumask_backtrace+0x19/0x20 [ 497.449553] [] do_raw_spin_lock+0xae/0x160 [ 497.449558] [] _raw_spin_lock_irqsave+0x27/0x30 [ 497.449563] [] load_balance+0x2fc/0x9c0 [ 497.449568] [] ? sched_clock_cpu+0xa7/0xc0 [ 497.449573] [] pick_next_task_fair+0x2a5/0x4e0 [ 497.449579] [] __schedule+0xd9/0x6d0 [ 497.449584] [] schedule+0x3d/0x90 [ 497.449589] [] schedule_timeout+0x1e3/0x410 [ 497.449594] [] ? rcu_report_qs_rnp+0xf0/0x180 [ 497.449598] [] ? del_timer_sync+0x50/0x50 [ 497.449604] [] rcu_gp_kthread+0x4f5/0x8b0 [ 497.449609] [] ? synchronize_sched_expedited.part.54+0x10/0x10 [ 497.449615] [] kthread+0xee/0x110 [ 497.449621] [] ? kthread_park+0x60/0x60 [ 497.449626] [] ret_from_fork+0x25/0x30 [ 497.449631] Sending NMI from CPU 3 to CPUs 0-2: [ 497.450637] NMI backtrace for cpu 0 [ 497.450642] CPU: 0 PID: 812 Comm: systemd-journal Tainted: G D W 4.9.0-rc6-drm-intel+ #171 [ 497.450646] Hardware name: LENOVO 20BW000FUK/20BW000FUK, BIOS JBET54WW (1.19 ) 11/06/2015 [ 497.450650] task: ffff97cca5dd9dc0 task.stack: ffffa33501274000 [ 497.450654] RIP: 0010:[] c [] queued_spin_lock_slowpath+0x183/0x1a0 [ 497.450658] RSP: 0018:ffffa33501277960 EFLAGS: 00000002 [ 497.450662] RAX: 0000000000080101 RBX: ffff97ccbd859880 RCX: 0000000000000001 [ 497.450666] RDX: 0000000000000101 RSI: 0000000000000001 RDI: ffff97ccbd859880 [ 497.450670] RBP: ffffa33501277960 R08: 0000000000000101 R09: 00000000000000ff [ 497.450674] R10: 00000000000000f2 R11: 0000000000000550 R12: 0000000088e75d00 [ 497.450678] R13: 0000000000000001 R14: 0000000088e75d00 R15: 0000000000000000 [ 497.450681] FS: 00007efdac136840(0000) GS:ffff97ccbd800000(0000) knlGS:0000000000000000 [ 497.450685] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 497.450689] CR2: 00007efda9966010 CR3: 000000022ab35000 CR4: 00000000003406f0 [ 497.450693] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 497.450697] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 497.450701] Stack: [ 497.450705] ffffa33501277990c ffffffffa30f1b7ec 0000000000000092c 00000000000001e5c [ 497.450709] 000000000000024dc ffff97ccbd819880c ffffa335012779a8c ffffffffa380e1b7c [ 497.450713] ffff97ccb4373738c ffffa33501277ac0c ffffffffa30e156cc ffffa33501277afcc [ 497.450717] Call Trace: [ 497.450720] [] do_raw_spin_lock+0x14e/0x160 [ 497.450724] [