Attachment 112638 Details for Bug 88688 – dmesg

dmesg

demsg_bdw05_gem_reset_stats_0122.txt (text/plain), 26.24 KB, created by lu hua on 2015-01-22 03:23:41 UTC

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Creator: lu hua

Created: 2015-01-22 03:23:41 UTC

Size: 26.24 KB

patch

obsolete

>[  368.596083] netpoll: netconsole: local port 6665
>[  368.596117] netpoll: netconsole: local IPv4 address 0.0.0.0
>[  368.596162] netpoll: netconsole: interface 'eth5'
>[  368.596203] netpoll: netconsole: remote port 6666
>[  368.596246] netpoll: netconsole: remote IPv4 address 10.239.156.108
>[  368.596287] netpoll: netconsole: remote ethernet address 74:d0:2b:95:69:65
>[  368.596325] netpoll: netconsole: local IP 10.239.156.129
>[  368.596388] console [netcon0] enabled
>[  368.596410] netconsole: network logging started
>[  368.598668] console [netcon0] disabled
>[  368.609083] netpoll: netconsole: local port 6665
>[  368.609115] netpoll: netconsole: local IPv4 address 0.0.0.0
>[  368.609147] netpoll: netconsole: interface 'eth5'
>[  368.609174] netpoll: netconsole: remote port 6666
>[  368.609201] netpoll: netconsole: remote IPv4 address 10.239.156.108
>[  368.609237] netpoll: netconsole: remote ethernet address 74:d0:2b:95:69:65
>[  368.609277] netpoll: netconsole: local IP 10.239.156.129
>[  368.609358] console [netcon0] enabled
>[  368.609400] netconsole: network logging started
>[  376.516387] gem_reset_stats: executing
>[  376.516515] [drm:i915_gem_open] 
>[  376.517951] [drm:gen8_ppgtt_init] Allocated 4 pages for page directories (0 wasted)
>[  376.518002] [drm:gen8_ppgtt_init] Allocated 2048 pages for page tables (0 wasted)
>[  376.518571] [drm:i915_gem_open] 
>[  376.519983] [drm:gen8_ppgtt_init] Allocated 4 pages for page directories (0 wasted)
>[  376.520033] [drm:gen8_ppgtt_init] Allocated 2048 pages for page tables (0 wasted)
>[  376.521513] [drm:gen8_ppgtt_init] Allocated 4 pages for page directories (0 wasted)
>[  376.521562] [drm:gen8_ppgtt_init] Allocated 2048 pages for page tables (0 wasted)
>[  376.521605] [drm:i915_gem_context_create_ioctl] HW context 1 created
>[  376.521822] [drm:i915_gem_context_destroy_ioctl] HW context 1 destroyed
>[  376.522222] [drm:i915_gem_open] 
>[  376.523634] [drm:gen8_ppgtt_init] Allocated 4 pages for page directories (0 wasted)
>[  376.523683] [drm:gen8_ppgtt_init] Allocated 2048 pages for page tables (0 wasted)
>[  376.523981] [drm:i915_gem_open] 
>[  376.525342] [drm:gen8_ppgtt_init] Allocated 4 pages for page directories (0 wasted)
>[  376.525391] [drm:gen8_ppgtt_init] Allocated 2048 pages for page tables (0 wasted)
>[  376.525701] [drm:i915_gem_open] 
>[  376.527055] [drm:gen8_ppgtt_init] Allocated 4 pages for page directories (0 wasted)
>[  376.527103] [drm:gen8_ppgtt_init] Allocated 2048 pages for page tables (0 wasted)
>[  376.527457] gem_reset_stats: starting subtest ban-bsd
>[  376.527519] [drm:i915_gem_open] 
>[  376.528868] [drm:gen8_ppgtt_init] Allocated 4 pages for page directories (0 wasted)
>[  376.528917] [drm:gen8_ppgtt_init] Allocated 2048 pages for page tables (0 wasted)
>[  376.529629] [drm:i915_gem_open] 
>[  376.530972] [drm:gen8_ppgtt_init] Allocated 4 pages for page directories (0 wasted)
>[  376.531021] [drm:gen8_ppgtt_init] Allocated 2048 pages for page tables (0 wasted)
>[  376.531080] [drm:i915_gem_open] 
>[  376.532517] [drm:gen8_ppgtt_init] Allocated 4 pages for page directories (0 wasted)
>[  376.532566] [drm:gen8_ppgtt_init] Allocated 2048 pages for page tables (0 wasted)
>[  376.532861] [drm:i915_ring_stop_set] Stopping rings 0x80000002
>[  382.525883] [drm] stuck on bsd ring
>[  382.526651] [drm] GPU HANG: ecode 8:1:0x277ffffe, in gem_reset_stats [4749], reason: Ring hung, action: reset
>[  382.526707] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
>[  382.526757] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
>[  382.526805] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
>[  382.526857] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
>[  382.526905] [drm] GPU crash dump saved to /sys/class/drm/card0/error
>[  382.526965] [drm:i915_error_work_func] resetting chip
>[  382.528885] [drm] Simulated gpu hang, resetting stop_rings
>[  382.528926] drm/i915: Resetting chip after gpu hang
>[  382.528960] [drm:gen8_init_common_ring] Execlists enabled for render ring
>[  382.529007] [drm:gen8_init_common_ring] Execlists enabled for bsd ring
>[  382.529050] [drm:gen8_init_common_ring] Execlists enabled for blitter ring
>[  382.530649] [drm:gen8_init_common_ring] Execlists enabled for video enhancement ring
>[  382.532264] [drm:ironlake_update_primary_plane] Writing base 00885000 00000000 0 0 7680
>[  382.533942] [drm:i915_ring_stop_set] Stopping rings 0x80000002
>[  384.526760] [drm:intel_print_rc6_info] Enabling RC6 states: RC6 on
>[  388.522558] [drm] stuck on bsd ring
>[  388.524872] [drm] GPU HANG: ecode 8:1:0x277ffffe, in gem_reset_stats [4749], reason: Ring hung, action: reset
>[  388.526579] [drm:i915_error_work_func] resetting chip
>[  388.528466] BUG: unable to handle kernel paging request at 00000000ffffffff
>[  388.530132] IP: [<ffffffff8110dc5e>] kmem_cache_alloc_trace+0xce/0x104
>[  388.531802] PGD a1588067 PUD 0 
>[  388.533461] Oops: 0000 [#1] SMP 
>[  388.535115] Modules linked in: netconsole configfs ipv6 battery parport_pc parport dm_mod ac acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea [last unloaded: netconsole]
>[  388.536955] CPU: 1 PID: 4755 Comm: systemd-udevd Not tainted 3.19.0-rc4_drm-intel-nightly_d6bc7a_20150121+ #718
>[  388.538755] task: ffff8800a75d9800 ti: ffff8800a1568000 task.ti: ffff8800a1568000
>[  388.540552] RIP: 0010:[<ffffffff8110dc5e>]  [<ffffffff8110dc5e>] kmem_cache_alloc_trace+0xce/0x104
>[  388.542392] RSP: 0018:ffff8800a156bbf8  EFLAGS: 00010282
>[  388.544231] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000002257
>[  388.546156] RDX: 0000000000002256 RSI: 00000000000000d0 RDI: ffff88014a003900
>[  388.548021] RBP: 00000000ffffffff R08: 0000000000015520 R09: 0000000000000000
>[  388.549886] R10: ffff880149c52780 R11: ffff8b919a899a8a R12: 00000000000000d0
>[  388.551753] R13: 0000000000000080 R14: ffffffff8112e8e7 R15: ffff88014a003900
>[  388.553622] FS:  00007f79f0568880(0000) GS:ffff88014ec40000(0000) knlGS:0000000000000000
>[  388.555510] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[  388.557397] CR2: 00000000ffffffff CR3: 00000000a1587000 CR4: 00000000003407e0
>[  388.559305] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[  388.561198] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[  388.563080] Stack:
>[  388.564938]  ffff880002da8000 0000000000000000 ffff880002da8000 ffffffff817d22f0
>[  388.566836]  ffff880002edca50 ffff880002da8010 ffffffff817d2660 ffffffff8112e8e7
>[  388.568731]  0000000000000000 ffff880002e9d580 ffff880002da8000 ffffffff8116d5d5
>[  388.570625] Call Trace:
>[  388.572500]  [<ffffffff8112e8e7>] ? seq_open+0x2c/0x7f
>[  388.574379]  [<ffffffff8116d5d5>] ? kernfs_fop_open+0x167/0x2be
>[  388.576260]  [<ffffffff8116d46e>] ? kernfs_fop_release+0x4c/0x4c
>[  388.578133]  [<ffffffff81111fe1>] ? do_dentry_open+0x184/0x2a6
>[  388.579993]  [<ffffffff8111decc>] ? do_last+0x942/0xb75
>[  388.581844]  [<ffffffff8111c2bd>] ? __inode_permission+0x2f/0x6e
>[  388.583692]  [<ffffffff8111e231>] ? link_path_walk+0x51/0x74a
>[  388.585523]  [<ffffffff8111f69c>] ? path_openat+0x20f/0x560
>[  388.587352]  [<ffffffff81144eea>] ? ep_read_events_proc+0x92/0x92
>[  388.589174]  [<ffffffff81120577>] ? do_filp_open+0x2b/0x6f
>[  388.590980]  [<ffffffff81129b81>] ? __alloc_fd+0x58/0xe3
>[  388.592780]  [<ffffffff811131b6>] ? do_sys_open+0x14b/0x1cf
>[  388.594565]  [<ffffffff8179efd2>] ? system_call_fastpath+0x12/0x17
>[  388.596351] Code: 7e 08 45 89 e1 49 89 d8 4c 89 e9 48 89 ea 4c 89 fe 41 ff 16 [  388.596467] [drm] Simulated gpu hang, resetting stop_rings
>[  388.596468] drm/i915: Resetting chip after gpu hang
>[  388.596491] [drm:gen8_init_common_ring] Execlists enabled for render ring
>[  388.596494] [drm:gen8_init_common_ring] Execlists enabled for bsd ring
>[  388.596505] [drm:gen8_init_common_ring] Execlists enabled for blitter ring
>[  388.596506] ------------[ cut here ]------------
>[  388.596507] [drm:gen8_init_common_ring] Execlists enabled for video enhancement ring
>[  388.596513] WARNING: CPU: 2 PID: 4755 at net/core/netpoll.c:362 netpoll_send_skb_on_dev+0x1ac/0x20e()
>[  388.596518] netpoll_send_skb_on_dev(): eth5 enabled interrupts in poll (e1000_xmit_frame+0x0/0xbeb)
>[  388.596518] Modules linked in: netconsole configfs ipv6 battery parport_pc parport dm_mod ac acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea [last unloaded: netconsole]
>[  388.596533] CPU: 2 PID: 4755 Comm: systemd-udevd Not tainted 3.19.0-rc4_drm-intel-nightly_d6bc7a_20150121+ #718
>[  388.596535] [drm:ironlake_update_primary_plane] Writing base 00885000 00000000 0 0 7680
>[  388.596535]  0000000000000000 0000000000000009 ffffffff81799600 ffff8800a156b6d8
>[  388.596538]  ffffffff8103bdcc ffff880148e97098 ffffffff816ff24e ffff880147d24600
>[  388.596540]  ffff8800a7e6d600 ffff8800a7c09e40 ffff8801490c4000 0000000000000013
>[  388.596543] Call Trace:
>[  388.596543]  [<ffffffff81799600>] ? dump_stack+0x40/0x50
>[  388.596547]  [<ffffffff8103bdcc>] ? warn_slowpath_common+0x98/0xb0
>[  388.596550]  [<ffffffff816ff24e>] ? netpoll_send_skb_on_dev+0x1ac/0x20e
>[  388.596554]  [<ffffffff8103be7c>] ? warn_slowpath_fmt+0x45/0x4a
>[  388.596557]  [<ffffffff816035f4>] ? e1000e_update_tdt_wa+0x8f/0x8f
>[  388.596560]  [<ffffffff816ff24e>] ? netpoll_send_skb_on_dev+0x1ac/0x20e
>[  388.596563]  [<ffffffff816ff663>] ? netpoll_send_udp+0x3b3/0x3c4
>[  388.596566]  [<ffffffffa0267624>] ? write_msg+0xc0/0x103 [netconsole]
>[  388.596571]  [<ffffffff8106f82d>] ? call_console_drivers.constprop.22+0xa0/0xc0
>[  388.596575]  [<ffffffff81070b70>] ? console_unlock+0x12f/0x339
>[  388.596578]  [<ffffffff810715dd>] ? vprintk_emit+0x365/0x379
>[  388.596581]  [<ffffffff8110dc33>] ? kmem_cache_alloc_trace+0xa3/0x104
>[  388.596584]  [<ffffffff8110dc47>] ? kmem_cache_alloc_trace+0xb7/0x104
>[  388.596587]  [<ffffffff8179636b>] ? printk+0x48/0x4d
>[  388.596589]  [<ffffffff81004796>] ? show_regs+0x16c/0x190
>[  388.596592]  [<ffffffff810053ec>] ? __die+0x90/0xc8
>[  388.596594]  [<ffffffff81795977>] ? no_context+0x2a2/0x30b
>[  388.596597]  [<ffffffff8133c723>] ? cpumask_next_and+0x2b/0x3b
>[  388.596601]  [<ffffffff81032aa0>] ? __do_page_fault+0x41a/0x4a8
>[  388.596606]  [<ffffffff8112e8e7>] ? seq_open+0x2c/0x7f
>[  388.596610]  [<ffffffff817a09c2>] ? page_fault+0x22/0x30
>[  388.596614]  [<ffffffff8112e8e7>] ? seq_open+0x2c/0x7f
>[  388.596618]  [<ffffffff8110dc5e>] ? kmem_cache_alloc_trace+0xce/0x104
>[  388.596621]  [<ffffffff8110dbba>] ? kmem_cache_alloc_trace+0x2a/0x104
>[  388.596625]  [<ffffffff8112e8e7>] ? seq_open+0x2c/0x7f
>[  388.596627]  [<ffffffff8116d5d5>] ? kernfs_fop_open+0x167/0x2be
>[  388.596631]  [<ffffffff8116d46e>] ? kernfs_fop_release+0x4c/0x4c
>[  388.596634]  [<ffffffff81111fe1>] ? do_dentry_open+0x184/0x2a6
>[  388.596638]  [<ffffffff8111decc>] ? do_last+0x942/0xb75
>[  388.596641]  [<ffffffff8111c2bd>] ? __inode_permission+0x2f/0x6e
>[  388.596643]  [<ffffffff8111e231>] ? link_path_walk+0x51/0x74a
>[  388.596647]  [<ffffffff8111f69c>] ? path_openat+0x20f/0x560
>[  388.596651]  [<ffffffff81144eea>] ? ep_read_events_proc+0x92/0x92
>[  388.596654]  [<ffffffff81120577>] ? do_filp_open+0x2b/0x6f
>[  388.596658]  [<ffffffff81129b81>] ? __alloc_fd+0x58/0xe3
>[  388.596662]  [<ffffffff811131b6>] ? do_sys_open+0x14b/0x1cf
>[  388.596664]  [<ffffffff8179efd2>] ? system_call_fastpath+0x12/0x17
>[  388.596669] ---[ end trace 6e905ea15340734c ]---
>[  388.597216] [drm:i915_gem_open] 
>[  388.599430] [drm:gen8_ppgtt_init] Allocated 4 pages for page directories (0 wasted)
>[  388.599434] [drm:gen8_ppgtt_init] Allocated 2048 pages for page tables (0 wasted)
>
>[  388.696204] 49 83 c6 10 49 83 3e 00 eb 30 eb 32 49 63 47 20 4d 8b 07 48 8d 4a 01 <48> 8b 5c 05 00 48 89 e8 65 49 0f c7 08 0f 94 c0 84 c0 75 89 e9 
>[  388.699334] RIP  [<ffffffff8110dc5e>] kmem_cache_alloc_trace+0xce/0x104
>[  388.700906]  RSP <ffff8800a156bbf8>
>[  388.702468] CR2: 00000000ffffffff
>[  388.704022] ---[ end trace 6e905ea15340734d ]---
>[  390.523435] [drm:intel_print_rc6_info] Enabling RC6 states: RC6 on
>[  391.018038] [drm:i915_gem_open] 
>[  391.020945] [drm:gen8_ppgtt_init] Allocated 4 pages for page directories (0 wasted)
>[  391.022560] [drm:gen8_ppgtt_init] Allocated 2048 pages for page tables (0 wasted)
>[  391.024367] gem_reset_stats: exiting, ret=0
>[  391.026534] [drm:intel_crtc_set_config] [CRTC:19] [FB:49] #connectors=1 (x y) (0 0)
>[  391.028102] [drm:intel_set_config_compute_mode_changes] computed changes for [CRTC:19], mode_changed=0, fb_changed=0
>[  391.029708] [drm:intel_modeset_stage_output_state] [CONNECTOR:30:eDP-1] to [CRTC:19]
>[  391.031335] [drm:intel_modeset_affected_pipes] set mode pipe masks: modeset: 1, prepare: 1, disable: 0
>[  391.032973] [drm:connected_sink_compute_bpp] [CONNECTOR:30:eDP-1] checking for sink bpp constrains
>[  391.034618] [drm:intel_dp_compute_config] DP link computation with max lane count 2 max bw 0a pixel clock 138780KHz
>[  391.036274] [drm:intel_dp_compute_config] DP link bw 0a lane count 2 clock 270000 bpp 24
>[  391.037904] [drm:intel_dp_compute_config] DP link bw required 333072 available 432000
>[  391.039471] [drm:intel_modeset_pipe_config] plane bpp: 24, pipe bpp: 24, dithering: 0
>[  391.040985] [drm:intel_dump_pipe_config] [CRTC:19][modeset] config for pipe A
>[  391.042480] [drm:intel_dump_pipe_config] cpu_transcoder: D
>[  391.043951] [drm:intel_dump_pipe_config] pipe bpp: 24, dithering: 0
>[  391.045418] [drm:intel_dump_pipe_config] fdi/pch: 0, lanes: 0, gmch_m: 0, gmch_n: 0, link_m: 0, link_n: 0, tu: 0
>[  391.046915] [drm:intel_dump_pipe_config] dp: 1, gmch_m: 6467616, gmch_n: 8388608, link_m: 269484, link_n: 524288, tu: 64
>[  391.048420] [drm:intel_dump_pipe_config] dp: 1, gmch_m2: 0, gmch_n2: 0, link_m2: 0, link_n2: 0, tu2: 0
>[  391.049925] [drm:intel_dump_pipe_config] audio: 0, infoframes: 0
>[  391.051425] [drm:intel_dump_pipe_config] requested mode:
>[  391.052915] [drm:drm_mode_debug_printmodeline] Modeline 0:"1920x1080" 60 138780 1920 1966 1996 2080 1080 1082 1086 1112 0x48 0xa
>[  391.054461] [drm:intel_dump_pipe_config] adjusted mode:
>[  391.056007] [drm:drm_mode_debug_printmodeline] Modeline 0:"1920x1080" 60 138780 1920 1966 1996 2080 1080 1082 1086 1112 0x48 0xa
>[  391.057612] [drm:intel_dump_crtc_timings] crtc timings: 138780 1920 1966 1996 2080 1080 1082 1086 1112, type: 0x48 flags: 0xa
>[  391.059250] [drm:intel_dump_pipe_config] port clock: 270000
>[  391.060879] [drm:intel_dump_pipe_config] pipe src size: 1920x1080
>[  391.062500] [drm:intel_dump_pipe_config] gmch pfit: control: 0x00000000, ratios: 0x00000000, lvds border: 0x00000000
>[  391.064155] [drm:intel_dump_pipe_config] pch pfit: pos: 0x00000000, size: 0x00000000, disabled
>[  391.065819] [drm:intel_dump_pipe_config] ips: 1
>[  391.067467] [drm:intel_dump_pipe_config] double wide: 0
>[  391.069125] [drm:intel_crtc_set_config] [CRTC:23] [NOFB]
>[  391.070783] [drm:intel_set_config_compute_mode_changes] computed changes for [CRTC:23], mode_changed=0, fb_changed=0
>[  391.072493] [drm:intel_modeset_stage_output_state] [CONNECTOR:30:eDP-1] to [CRTC:19]
>[  391.074220] [drm:intel_modeset_affected_pipes] set mode pipe masks: modeset: 0, prepare: 0, disable: 0
>[  391.075972] [drm:intel_crtc_set_config] [CRTC:27] [NOFB]
>[  391.077727] [drm:intel_set_config_compute_mode_changes] computed changes for [CRTC:27], mode_changed=0, fb_changed=0
>[  391.079532] [drm:intel_modeset_stage_output_state] [CONNECTOR:30:eDP-1] to [CRTC:19]
>[  391.081348] [drm:intel_modeset_affected_pipes] set mode pipe masks: modeset: 0, prepare: 0, disable: 0
>[  391.083886] BUG: unable to handle kernel paging request at 00000000ffffffff
>[  391.085751] IP: [<ffffffff8110e90b>] kmem_cache_alloc+0xd9/0x113
>[  391.087620] PGD a20fd067 PUD 0 
>[  391.089493] Oops: 0000 [#2] SMP 
>[  391.091358] Modules linked in: netconsole configfs ipv6 battery parport_pc parport dm_mod ac acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea [last unloaded: netconsole]
>[  391.093411] CPU: 1 PID: 4749 Comm: gem_reset_stats Tainted: G      D W      3.19.0-rc4_drm-intel-nightly_d6bc7a_20150121+ #718
>[  391.095449] task: ffff8800a75dc000 ti: ffff8800024a0000 task.ti: ffff8800024a0000
>[  391.097503] RIP: 0010:[<ffffffff8110e90b>]  [<ffffffff8110e90b>] kmem_cache_alloc+0xd9/0x113
>[  391.099590] RSP: 0000:ffff8800024a3998  EFLAGS: 00010082
>[  391.101673] RAX: 0000000000000000 RBX: ffff8800a2059800 RCX: 0000000000002259
>[  391.103777] RDX: 0000000000002258 RSI: 0000000000000020 RDI: ffff88014a003900
>[  391.105885] RBP: 00000000ffffffff R08: 0000000000015520 R09: 0000000000000000
>[  391.107994] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88014a003900
>[  391.110108] R13: 0000000000000020 R14: ffffffff813ff889 R15: ffff8800024a3b48
>[  391.112221] FS:  00007feaa25008c0(0000) GS:ffff88014ec40000(0000) knlGS:0000000000000000
>[  391.114355] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[  391.116491] CR2: 00000000ffffffff CR3: 0000000002e17000 CR4: 00000000003407e0
>[  391.118635] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[  391.120779] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[  391.122897] Stack:
>[  391.125005]  0000000000000000 ffff8800a2059800 ffffffff81c01050 0000000000000020
>[  391.127150]  ffff880149702000 ffff880149702000 ffff8800024a3b48 ffffffff813ff889
>[  391.129264]  ffff880149702000 ffff880002110408 ffff8800a7f3a800 ffff880149702000
>[  391.131342] Call Trace:
>[  391.133394]  [<ffffffff813ff889>] ? scsi_host_alloc_command+0x3e/0x9e
>[  391.135479]  [<ffffffff813ff9dd>] ? scsi_get_command+0x16/0x128
>[  391.137560]  [<ffffffff81407768>] ? scsi_prep_fn+0x58/0x139
>[  391.139627]  [<ffffffff81325efc>] ? blk_peek_request+0xf7/0x216
>[  391.141689]  [<ffffffff81407b3b>] ? scsi_request_fn+0x2f/0x5cc
>[  391.143739]  [<ffffffff813235a4>] ? __blk_run_queue+0x29/0x31
>[  391.145782]  [<ffffffff813241ea>] ? queue_unplugged+0x54/0x77
>[  391.147810]  [<ffffffff81326314>] ? blk_flush_plug_list+0x1aa/0x1bc
>[  391.149826]  [<ffffffff81326331>] ? blk_finish_plug+0xb/0x2a
>[  391.151811]  [<ffffffff810db1ab>] ? __do_page_cache_readahead+0x1a2/0x1c3
>[  391.153782]  [<ffffffff810d352a>] ? filemap_fault+0x196/0x3a7
>[  391.155736]  [<ffffffff810ef961>] ? __do_fault+0x35/0x73
>[  391.157664]  [<ffffffff810f1a21>] ? do_read_fault.isra.80+0x1ae/0x26d
>[  391.159575]  [<ffffffff81036370>] ? pte_alloc_one+0x28/0x38
>[  391.161470]  [<ffffffff810f33ee>] ? handle_mm_fault+0x1ea/0x836
>[  391.163369]  [<ffffffff811204ca>] ? user_path_at_empty+0x54/0x7d
>[  391.165258]  [<ffffffff81032aea>] ? __do_page_fault+0x464/0x4a8
>[  391.167132]  [<ffffffff811252cc>] ? __dentry_kill+0x148/0x172
>[  391.169004]  [<ffffffff81117920>] ? vfs_fstatat+0x3e/0x8d
>[  391.170876]  [<ffffffff811150f5>] ? __fput+0x186/0x1ab
>[  391.172731]  [<ffffffff81117a7a>] ? SyS_newstat+0x12/0x2d
>[  391.174564]  [<ffffffff8104fdc9>] ? task_work_run+0x84/0x93
>[  391.176385]  [<ffffffff817a09c2>] ? page_fault+0x22/0x30
>[  391.178189] Code: e9 4d 89 f8 4c 89 f1 48 89 ea 48 89 de 41 ff 14 24 49 83 c4 10 49 83 3c 24 00 eb 36 eb 38 49 63 44 24 20 4d 8b 04 24 48 8d 4a 01 <48> 8b 5c 05 00 48 89 e8 65 49 0f c7 08 0f 94 c0 84 c0 0f 85 78 
>[  391.180351] RIP  [<ffffffff8110e90b>] kmem_cache_alloc+0xd9/0x113
>[  391.182254]  RSP <ffff8800024a3998>
>[  391.184112] CR2: 00000000ffffffff
>[  391.185935] ---[ end trace 6e905ea15340734e ]---
>[  391.707017] BUG: unable to handle kernel paging request at 00000000ffffffff
>[  391.708839] IP: [<ffffffff8110e90b>] kmem_cache_alloc+0xd9/0x113
>[  391.710662] PGD a23aa067 PUD 0 
>[  391.712467] Oops: 0000 [#3] SMP 
>[  391.714245] Modules linked in: netconsole configfs ipv6 battery parport_pc parport dm_mod ac acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea [last unloaded: netconsole]
>[  391.716205] CPU: 1 PID: 4758 Comm: systemd-udevd Tainted: G      D W      3.19.0-rc4_drm-intel-nightly_d6bc7a_20150121+ #718
>[  391.718152] task: ffff8800a75d9800 ti: ffff8800a7528000 task.ti: ffff8800a7528000
>[  391.720110] RIP: 0010:[<ffffffff8110e90b>]  [<ffffffff8110e90b>] kmem_cache_alloc+0xd9/0x113
>[  391.722077] RSP: 0018:ffff8800a752be88  EFLAGS: 00010282
>[  391.724015] RAX: 0000000000000000 RBX: ffff8800a7c09840 RCX: 0000000000002259
>[  391.725954] RDX: 0000000000002258 RSI: 00000000000000d0 RDI: ffff88014a003900
>[  391.727880] RBP: 00000000ffffffff R08: 0000000000015520 R09: 0000000000080800
>[  391.729782] R10: 00007fffdb493a20 R11: 0000000000000206 R12: ffff88014a003900
>[  391.731656] R13: 00000000000000d0 R14: ffffffff811460c1 R15: 0000000000000000
>[  391.733524] FS:  00007f79f0568880(0000) GS:ffff88014ec40000(0000) knlGS:0000000000000000
>[  391.735383] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>[  391.737233] CR2: 00000000ffffffff CR3: 00000000a23ab000 CR4: 00000000003407e0
>[  391.739094] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>[  391.740952] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>[  391.742741] Stack:
>[  391.744449]  0000000000000000 ffff8800a7c09840 ffff8800022e4700 00000000ffffffef
>[  391.746179]  0000000000000000 000000000000000c 0000000000000000 ffffffff811460c1
>[  391.747890]  ffff880100000003 ffff8800022e4300 0000000000000000 00000000817cb360
>[  391.749584] Call Trace:
>[  391.751253]  [<ffffffff811460c1>] ? SyS_epoll_ctl+0x2fb/0x7dc
>[  391.752942]  [<ffffffff81146946>] ? anon_inode_getfile+0xd5/0x139
>[  391.754636]  [<ffffffff81129c48>] ? __fd_install+0x15/0x43
>[  391.756321]  [<ffffffff8179efd2>] ? system_call_fastpath+0x12/0x17
>[  391.758016] Code: e9 4d 89 f8 4c 89 f1 48 89 ea 48 89 de 41 ff 14 24 49 83 c4 10 49 83 3c 24 00 eb 36 eb 38 49 63 44 24 20 4d 8b 04 24 48 8d 4a 01 <48> 8b 5c 05 00 48 89 e8 65 49 0f c7 08 0f 94 c0 84 c0 0f 85 78 
>[  391.759970] RIP  [<ffffffff8110e90b>] kmem_cache_alloc+0xd9/0x113
>[  391.761748]  RSP <ffff8800a752be88>
>[  391.763512] CR2: 00000000ffffffff
>[  391.765269] ---[ end trace 6e905ea15340734f ]---
>[  451.155816] INFO: rcu_sched detected stalls on CPUs/tasks: { 2} (detected by 0, t=60002 jiffies, g=1355, c=1354, q=493)
>[  451.158602] Task dump for CPU 2:
>[  451.161337] gem_reset_stats R  running task        0  4749      0 0x0000000a
>[  451.164101]  0000000000000000 ffff880002e3d0d0 ffffffff81064c6c ffff880147c27000
>[  451.166907]  ffff8800a75dc000 0000000000000000 ffff880002e3d0e0 0000000000000082
>[  451.169694]  0000000000000000 ffff880002275ac0 ffff8800022762c8 0000000000000046
>[  451.172467] Call Trace:
>[  451.175221]  [<ffffffff81064c6c>] ? __wake_up_common+0x42/0x78
>[  451.178012]  [<ffffffff8106509d>] ? __wake_up_sync_key+0x40/0x58
>[  451.180801]  [<ffffffff81045c7e>] ? do_notify_parent+0x1bd/0x1d2
>[  451.183585]  [<ffffffff8179eb01>] ? _raw_spin_unlock_irqrestore+0x5/0x6
>[  451.186382]  [<ffffffff813285c7>] ? put_io_context_active+0x6c/0x9d
>[  451.189190]  [<ffffffff8103df6f>] ? do_exit+0x856/0x91d
>[  451.191986]  [<ffffffff8179636b>] ? printk+0x48/0x4d
>[  451.194776]  [<ffffffff81005343>] ? oops_end+0x9a/0x9f
>[  451.197563]  [<ffffffff8179599f>] ? no_context+0x2ca/0x30b
>[  451.200341]  [<ffffffff81032aa0>] ? __do_page_fault+0x41a/0x4a8
>[  451.203124]  [<ffffffff811df025>] ? ext4_ext_map_blocks+0xd31/0xe7a
>[  451.205911]  [<ffffffff811edd3e>] ? __es_remove_extent+0x3f/0x258
>[  451.208689]  [<ffffffff811edce0>] ? __es_insert_extent+0x2eb/0x30a
>[  451.211459]  [<ffffffff813ff889>] ? scsi_host_alloc_command+0x3e/0x9e
>[  451.214239]  [<ffffffff817a09c2>] ? page_fault+0x22/0x30
>[  451.217022]  [<ffffffff813ff889>] ? scsi_host_alloc_command+0x3e/0x9e
>[  451.219819]  [<ffffffff8110e90b>] ? kmem_cache_alloc+0xd9/0x113
>[  451.222615]  [<ffffffff813ff889>] ? scsi_host_alloc_command+0x3e/0x9e
>[  451.225414]  [<ffffffff813ff9dd>] ? scsi_get_command+0x16/0x128
>[  451.228221]  [<ffffffff81407768>] ? scsi_prep_fn+0x58/0x139
>[  451.231019]  [<ffffffff81325efc>] ? blk_peek_request+0xf7/0x216
>[  451.233834]  [<ffffffff81407b3b>] ? scsi_request_fn+0x2f/0x5cc
>[  451.236558]  [<ffffffff813235a4>] ? __blk_run_queue+0x29/0x31
>[  451.239188]  [<ffffffff813241ea>] ? queue_unplugged+0x54/0x77
>[  451.241806]  [<ffffffff81326314>] ? blk_flush_plug_list+0x1aa/0x1bc
>[  451.244433]  [<ffffffff81326331>] ? blk_finish_plug+0xb/0x2a
>[  451.247050]  [<ffffffff810db1ab>] ? __do_page_cache_readahead+0x1a2/0x1c3
>[  451.249659]  [<ffffffff810d352a>] ? filemap_fault+0x196/0x3a7
>[  451.252245]  [<ffffffff810ef961>] ? __do_fault+0x35/0x73
>[  451.254816]  [<ffffffff810f1a21>] ? do_read_fault.isra.80+0x1ae/0x26d
>[  451.257410]  [<ffffffff81036370>] ? pte_alloc_one+0x28/0x38
>[  451.259901]  [<ffffffff810f33ee>] ? handle_mm_fault+0x1ea/0x836
>[  451.262299]  [<ffffffff811204ca>] ? user_path_at_empty+0x54/0x7d
>[  451.264650]  [<ffffffff81032aea>] ? __do_page_fault+0x464/0x4a8
>[  451.266970]  [<ffffffff811252cc>] ? __dentry_kill+0x148/0x172
>[  451.269266]  [<ffffffff81117920>] ? vfs_fstatat+0x3e/0x8d
>[  451.271537]  [<ffffffff811150f5>] ? __fput+0x186/0x1ab
>[  451.273797]  [<ffffffff81117a7a>] ? SyS_newstat+0x12/0x2d
>[  451.276057]  [<ffffffff8104fdc9>] ? task_work_run+0x84/0x93
>[  451.278308]  [<ffffffff817a09c2>] ? page_fault+0x22/0x30
>[  600.764691] [drm:intel_edp_backlight_off] 
>[  600.964768] [drm:intel_panel_actually_set_backlight] set backlight PWM = 0
>[  600.982765] [drm:edp_panel_vdd_on] Turning eDP port A VDD on
>[  600.982771] [drm:edp_panel_vdd_on] PP_STATUS: 0x80000008 PP_CONTROL: 0xabcd000b
>[  600.982917] [drm:edp_panel_off] Turn eDP port A panel power off
>[  600.982920] [drm:wait_panel_off] Wait for panel power off time
>[  600.982924] [drm:wait_panel_status] mask b0000000 value 00000000 status 80000008 control abcd0000
>[  601.037729] [drm:wait_panel_status] Wait complete
>[  601.037736] [drm:intel_fbc_update] no output, disabling
>[  601.037738] [drm:intel_display_power_put] disabling always-on
>[  601.037742] [drm:check_encoder_state] [ENCODER:29:TMDS-29]
>[  601.037744] [drm:check_encoder_state] [ENCODER:38:TMDS-38]
>[  601.037745] [drm:check_encoder_state] [ENCODER:40:DP MST-40]
>[  601.037746] [drm:check_encoder_state] [ENCODER:41:DP MST-41]
>[  601.037747] [drm:check_encoder_state] [ENCODER:42:DP MST-42]
>[  601.037748] [drm:check_encoder_state] [ENCODER:45:TMDS-45]
>[  601.037750] [drm:check_crtc_state] [CRTC:19]
>[  601.037752] [drm:check_crtc_state] [CRTC:23]
>[  601.037753] [drm:check_crtc_state] [CRTC:27]
>[  601.037754] [drm:check_shared_dpll_state] WRPLL 1
>[  601.037755] [drm:check_shared_dpll_state] WRPLL 2

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