Bug 743493 - Kernel crash on login procedure
Summary: Kernel crash on login procedure
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-intel
Version: 15
Hardware: x86_64
OS: Linux
unspecified
high
Target Milestone: ---
Assignee: Adam Jackson
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-10-05 06:08 UTC by Panos Kavalagios
Modified: 2012-08-07 14:46 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-08-07 14:46:43 UTC
Type: ---

Attachments (Terms of Use)
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Description Panos Kavalagios 2011-10-05 06:08:22 UTC 
Description of problem: When you have provided the login credentials during KDE loading a kernel crash occurs and the system hangs. It is not responding to commands like shutdown or kill -9 from a remote shell (ssh). Only hard reset can be done.


Version-Release number of selected component (if applicable): kernel-2.6.40.4-5.fc15.x86_64


How reproducible: Log in to KDE from a KDM session. The problem is not always reproduced.


Steps to Reproduce:
1. In KDM session provide login and password
2. Press the enter button
3. 
  
Actual results: The system hangs in the final loading screen of KDE just before revealing the desktop taskbar and background


Expected results: The system should have proceed in loading the desktop environment.


Additional info: From /var/log/messages:

Oct  5 08:30:12 bb229 kernel: [52374.416705] ------------[ cut here ]------------
Oct  5 08:30:12 bb229 kernel: [52374.416774] kernel BUG at drivers/gpu/drm/i915/i915_gem.c:3292!
Oct  5 08:30:12 bb229 kernel: [52374.416850] invalid opcode: 0000 [#1] SMP 
Oct  5 08:30:12 bb229 kernel: [52374.416908] CPU 1 
Oct  5 08:30:12 bb229 kernel: [52374.416933] Modules linked in: ppdev parport_pc lp parport des_generic vboxpci vboxnetadp md4 vboxnetflt nls_utf8 cifs fscache vboxdrv bnep bluetooth rfkill lm85 hwmon_vid vfat fat fuse snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm i2c_i801 iTCO_wdt iTCO_vendor_support serio_raw joydev sky2 tpm_infineon snd_timer snd soundcore snd_page_alloc ipv6 i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
Oct  5 08:30:12 bb229 kernel: [52374.417162] 
Oct  5 08:30:12 bb229 kernel: [52374.417162] Pid: 13918, comm: kwin Not tainted 2.6.40.4-5.fc15.x86_64 #1                  /D915GEV                        
Oct  5 08:30:12 bb229 kernel: [52374.417162] RIP: 0010:[<ffffffffa0077628>]  [<ffffffffa0077628>] i915_gem_object_pin+0x3a/0x13b [i915]
Oct  5 08:30:12 bb229 kernel: [52374.417162] RSP: 0018:ffff8800a951dba8  EFLAGS: 00010246
Oct  5 08:30:12 bb229 kernel: [52374.417162] RAX: 000000000001e000 RBX: ffff8800876e0200 RCX: 0000000000000001
Oct  5 08:30:12 bb229 kernel: [52374.417162] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8800876e0200
Oct  5 08:30:12 bb229 kernel: [52374.417162] RBP: ffff8800a951dbd8 R08: ffff8800bcffb670 R09: 000000000000010e
Oct  5 08:30:12 bb229 kernel: [52374.417162] R10: 0000000000000000 R11: ffff8800bcffa030 R12: 0000000000000000
Oct  5 08:30:12 bb229 kernel: [52374.417162] R13: ffff8800a951dc00 R14: ffff8800bcffa000 R15: ffff8800a951dd01
Oct  5 08:30:12 bb229 kernel: [52374.417162] FS:  00007fe881157840(0000) GS:ffff8800c5d00000(0000) knlGS:0000000000000000
Oct  5 08:30:12 bb229 kernel: [52374.417162] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct  5 08:30:12 bb229 kernel: [52374.417162] CR2: 00000000012c6238 CR3: 0000000003871000 CR4: 00000000000006e0
Oct  5 08:30:12 bb229 kernel: [52374.417162] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Oct  5 08:30:12 bb229 kernel: [52374.417162] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Oct  5 08:30:12 bb229 kernel: [52374.417162] Process kwin (pid: 13918, threadinfo ffff8800a951c000, task ffff8800c040c590)
Oct  5 08:30:12 bb229 kernel: [52374.417162] Stack:
Oct  5 08:30:12 bb229 kernel: [52374.417162]  ffff8800a951dd78 ffffffffa0079cd0 ffff8800a951dd00 ffff8800876e0200
Oct  5 08:30:12 bb229 kernel: [52374.417162]  ffff8800a951dc08 0000000000000000 ffff8800a951dc48 ffffffffa0079814
Oct  5 08:30:12 bb229 kernel: [52374.417162]  ffff8800a951dc38 ffffffff8111673e ffff8800a951dc18 ffff8800bcffa030
Oct  5 08:30:12 bb229 kernel: [52374.417162] Call Trace:
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffffa0079cd0>] ? kzalloc.constprop.2+0x13/0x15 [i915]
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffffa0079814>] i915_gem_execbuffer_reserve+0x13c/0x2fb [i915]
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffff8111673e>] ? __kmalloc+0x103/0x115
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffffa007a117>] i915_gem_do_execbuffer+0x445/0x10d6 [i915]
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffffa007411c>] ? drm_gem_object_unreference+0x1a/0x1c [i915]
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffffa007b018>] ? i915_gem_execbuffer2+0x53/0x147 [i915]
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffff81041325>] ? should_resched+0xe/0x2d
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffffa007b0aa>] i915_gem_execbuffer2+0xe5/0x147 [i915]
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffff81041325>] ? should_resched+0xe/0x2d
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffffa001d7f7>] drm_ioctl+0x29e/0x37b [drm]
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffffa007afc5>] ? i915_gem_execbuffer+0x21d/0x21d [i915]
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffff81486b24>] ? _cond_resched+0xe/0x22
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffff8112a767>] ? might_fault+0x21/0x23
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffff8112a860>] ? cp_new_stat+0xf7/0x10d
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffff81134f0a>] do_vfs_ioctl+0x460/0x4a1
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffff81134fa1>] sys_ioctl+0x56/0x79
Oct  5 08:30:12 bb229 kernel: [52374.417162]  [<ffffffff8148e842>] system_call_fastpath+0x16/0x1b
Oct  5 08:30:12 bb229 kernel: [52374.417162] Code: 66 66 66 66 90 48 8b 47 08 48 89 fb 41 89 f4 41 88 d5 4c 8b b0 48 03 00 00 8b 87 e0 00 00 00 25 00 e0 01 00 3d 00 e0 01 00 75 02 <0f> 0b 48 83 bf 88 00 00 00 00 74 68 85 f6 74 0d 41 8d 54 24 ff 
Oct  5 08:30:12 bb229 kernel: [52374.417162] RIP  [<ffffffffa0077628>] i915_gem_object_pin+0x3a/0x13b [i915]
Oct  5 08:30:12 bb229 kernel: [52374.417162]  RSP <ffff8800a951dba8>
Oct  5 08:31:11 bb229 kernel: Kernel logging (proc) stopped.
Comment 1 Josh Boyer 2011-10-05 11:54:52 UTC 
It would be really beneficial to know if you can recreate that without all the vbox modules loaded.  They cause no end of problems.
Comment 2 Panos Kavalagios 2011-10-05 12:18:27 UTC 
Hello Josh,

Thank you very much for your prompt reply. I could gladly try, but unfortunately I haven't find yet a certain path to reproduce the problem. It is reproduced on logins with a very low probability of 10% or less. If I remove vbox modules and I cannot reproduce the problem, we can't be sure that those were to blame.

If you have any other information for steps that can reproduce the problem 100%, please let me know.
Comment 3 Mike Bull 2011-10-11 07:35:53 UTC 
Got the same error, twice  Not using vbox.

Don't know if this is relevant to the problem, but in the two occasions I have encountered this error, it occurred very shortly (within a few seconds) after issuing an 'rm -rf' command on a set of directories.  The total volume of the directories was on the order of 20 to 30 gigabytes in several hundred files.

In the first instance, the machine was unresponsive for several minutes, before I forced power-off by holding the power button.

In the second instance, the machine was unresponsive, but came back on its own in less than 10 minutes.  I did not have to reboot.

I have not attempted to reproduce the problem again.

Output of uname -a:
Linux todaki 2.6.40.4-5.fc15.x86_64 #1 SMP Tue Aug 30 14:38:32 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

[/var/log/messages] (first instance)
Oct  9 00:24:15 todaki kernel: [526507.666920] ------------[ cut here ]------------
Oct  9 00:24:15 todaki kernel: [526507.666960] kernel BUG at drivers/gpu/drm/i915/i915_gem.c:3292!
Oct  9 00:24:15 todaki kernel: [526507.667004] invalid opcode: 0000 [#1] SMP 
Oct  9 00:24:15 todaki kernel: [526507.667037] CPU 2 
Oct  9 00:24:15 todaki kernel: [526507.667053] Modules linked in: nfs lockd fscache auth_rpcgss nfs_acl 8021q garp stp llc sunrpc cpufreq_ondemand acpi_cpufreq mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables coretemp snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer xhci_hcd snd e1000e iTCO_wdt soundcore snd_page_alloc iTCO_vendor_support i2c_i801 joydev microcode serio_raw ipv6 i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
Oct  9 00:24:15 todaki kernel: [526507.667486] 
Oct  9 00:24:15 todaki kernel: [526507.667500] Pid: 13813, comm: xbmc.bin Not tainted 2.6.40.4-5.fc15.x86_64 #1                  /DH67CF
Oct  9 00:24:15 todaki kernel: [526507.667570] RIP: 0010:[<ffffffffa0077628>]  [<ffffffffa0077628>] i915_gem_object_pin+0x3a/0x13b [i915]
Oct  9 00:24:15 todaki kernel: [526507.667653] RSP: 0018:ffff880115b33ba8  EFLAGS: 00210246
Oct  9 00:24:15 todaki kernel: [526507.667690] RAX: 000000000001e000 RBX: ffff880116ef5200 RCX: 0000000000000001
Oct  9 00:24:15 todaki kernel: [526507.667740] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880116ef5200
Oct  9 00:24:15 todaki kernel: [526507.667790] RBP: ffff880115b33bd8 R08: ffff880114eb1670 R09: 000000000000000a
Oct  9 00:24:15 todaki kernel: [526507.667840] R10: 0000000000000000 R11: ffff880114eb02b0 R12: 0000000000000000
Oct  9 00:24:15 todaki kernel: [526507.667890] R13: ffff880115b33c00 R14: ffff880114eb0000 R15: ffff880115b33d00
Oct  9 00:24:15 todaki kernel: [526507.667940] FS:  00007f7471509860(0000) GS:ffff88011fb00000(0000) knlGS:0000000000000000
Oct  9 00:24:15 todaki kernel: [526507.667996] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct  9 00:24:15 todaki kernel: [526507.668037] CR2: 00007f86c4b77000 CR3: 0000000115957000 CR4: 00000000000406e0
Oct  9 00:24:15 todaki kernel: [526507.668087] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Oct  9 00:24:15 todaki kernel: [526507.668137] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Oct  9 00:24:15 todaki kernel: [526507.668186] Process xbmc.bin (pid: 13813, threadinfo ffff880115b32000, task ffff880117361730)
Oct  9 00:24:15 todaki kernel: [526507.668245] Stack:
Oct  9 00:24:15 todaki kernel: [526507.668261]  ffff880115b33d78 ffffffffa0079cd0 ffff880115b33d00 ffff880116ef5200
Oct  9 00:24:15 todaki kernel: [526507.668322]  ffff880115b33c08 0000000000000000 ffff880115b33c48 ffffffffa0079814
Oct  9 00:24:15 todaki kernel: [526507.668381]  ffff880115b33c38 ffffffff8111673e ffff880115b33c18 ffff880114eb02b0
Oct  9 00:24:15 todaki kernel: [526507.668441] Call Trace:
Oct  9 00:24:15 todaki kernel: [526507.668474]  [<ffffffffa0079cd0>] ? kzalloc.constprop.2+0x13/0x15 [i915]
Oct  9 00:24:15 todaki kernel: [526507.668530]  [<ffffffffa0079814>] i915_gem_execbuffer_reserve+0x13c/0x2fb [i915]
Oct  9 00:24:15 todaki kernel: [526507.668584]  [<ffffffff8111673e>] ? __kmalloc+0x103/0x115
Oct  9 00:24:15 todaki kernel: [526507.668632]  [<ffffffffa007a117>] i915_gem_do_execbuffer+0x445/0x10d6 [i915]
Oct  9 00:24:15 todaki kernel: [526507.668690]  [<ffffffffa007411c>] ? drm_gem_object_unreference+0x1a/0x1c [i915]
Oct  9 00:24:15 todaki kernel: [526507.668750]  [<ffffffffa007b018>] ? i915_gem_execbuffer2+0x53/0x147 [i915]
Oct  9 00:24:15 todaki kernel: [526507.668800]  [<ffffffff81041325>] ? should_resched+0xe/0x2d
Oct  9 00:24:15 todaki kernel: [526507.668847]  [<ffffffffa007b0aa>] i915_gem_execbuffer2+0xe5/0x147 [i915]
Oct  9 00:24:15 todaki kernel: [526507.668895]  [<ffffffff81041325>] ? should_resched+0xe/0x2d
Oct  9 00:24:15 todaki kernel: [526507.668943]  [<ffffffffa001d7f7>] drm_ioctl+0x29e/0x37b [drm]
Oct  9 00:24:15 todaki kernel: [526507.668993]  [<ffffffffa007afc5>] ? i915_gem_execbuffer+0x21d/0x21d [i915]
Oct  9 00:24:15 todaki kernel: [526507.669043]  [<ffffffff81134f0a>] do_vfs_ioctl+0x460/0x4a1
Oct  9 00:24:15 todaki kernel: [526507.669084]  [<ffffffff811f358f>] ? security_file_permission+0x2e/0x33
Oct  9 00:24:15 todaki kernel: [526507.669131]  [<ffffffff81127006>] ? rw_verify_area+0xb0/0xcd
Oct  9 00:24:15 todaki kernel: [526507.669172]  [<ffffffff81134fa1>] sys_ioctl+0x56/0x79
Oct  9 00:24:15 todaki kernel: [526507.669211]  [<ffffffff8148e842>] system_call_fastpath+0x16/0x1b
Oct  9 00:24:15 todaki kernel: [526507.669254] Code: 66 66 66 66 90 48 8b 47 08 48 89 fb 41 89 f4 41 88 d5 4c 8b b0 48 03 00 00 8b 87 e0 00 00 00 25 00 e0 01 00 3d 00 e0 01 00 75 02 <0f> 0b 48 83 bf 88 00 00 00 00 74 68 85 f6 74 0d 41 8d 54 24 ff 
Oct  9 00:24:15 todaki kernel: [526507.669514] RIP  [<ffffffffa0077628>] i915_gem_object_pin+0x3a/0x13b [i915]
Oct  9 00:24:15 todaki kernel: [526507.669574]  RSP <ffff880115b33ba8>
Oct  9 00:24:15 todaki kernel: [526542.320075] ------------[ cut here ]------------

[/var/log/messages] (second instance)
Oct 10 23:30:52 todaki kernel: [169016.032985] ------------[ cut here ]------------
Oct 10 23:30:52 todaki kernel: [169016.033028] kernel BUG at drivers/gpu/drm/i915/i915_gem.c:3292!
Oct 10 23:30:52 todaki kernel: [169016.033074] invalid opcode: 0000 [#1] SMP 
Oct 10 23:30:52 todaki kernel: [169016.033109] CPU 2 
Oct 10 23:30:52 todaki kernel: [169016.033126] Modules linked in: nfs lockd fscache auth_rpcgss nfs_acl sunrpc 8021q garp stp llc cpufreq_ondemand acpi_cpufreq mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables coretemp snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore e1000e snd_page_alloc xhci_hcd i2c_i801 iTCO_wdt microcode iTCO_vendor_support joydev serio_raw ipv6 i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
Oct 10 23:30:52 todaki kernel: [169016.033576] 
Oct 10 23:30:52 todaki kernel: [169016.033591] Pid: 1309, comm: xbmc.bin Not tainted 2.6.40.4-5.fc15.x86_64 #1                  /DH67CF
Oct 10 23:30:52 todaki kernel: [169016.033664] RIP: 0010:[<ffffffffa0077628>]  [<ffffffffa0077628>] i915_gem_object_pin+0x3a/0x13b [i915]
Oct 10 23:30:52 todaki kernel: [169016.033749] RSP: 0018:ffff880107b71ba8  EFLAGS: 00210246
Oct 10 23:30:52 todaki kernel: [169016.033788] RAX: 000000000001e000 RBX: ffff880117c50e00 RCX: 0000000000000001
Oct 10 23:30:52 todaki kernel: [169016.033840] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880117c50e00
Oct 10 23:30:52 todaki kernel: [169016.033892] RBP: ffff880107b71bd8 R08: ffff88011517d670 R09: 0000000000000008
Oct 10 23:30:52 todaki kernel: [169016.033944] R10: 0000000000000000 R11: ffff88011517c2b0 R12: 0000000000000000
Oct 10 23:30:52 todaki kernel: [169016.033995] R13: ffff880107b71c00 R14: ffff88011517c000 R15: ffff880107b71d00
Oct 10 23:30:52 todaki kernel: [169016.034048] FS:  00007fac28c2e860(0000) GS:ffff88011fb00000(0000) knlGS:0000000000000000
Oct 10 23:30:52 todaki kernel: [169016.034106] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 10 23:30:52 todaki kernel: [169016.034149] CR2: 00007f4740166000 CR3: 00000001071e6000 CR4: 00000000000406e0
Oct 10 23:30:52 todaki kernel: [169016.034200] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Oct 10 23:30:52 todaki kernel: [169016.034252] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Oct 10 23:30:52 todaki kernel: [169016.034304] Process xbmc.bin (pid: 1309, threadinfo ffff880107b70000, task ffff88011790dcc0)
Oct 10 23:30:52 todaki kernel: [169016.034364] Stack:
Oct 10 23:30:52 todaki kernel: [169016.034381]  ffff880107b71d78 ffffffffa0079cd0 ffff880107b71d00 ffff880117c50e00
Oct 10 23:30:52 todaki kernel: [169016.034445]  ffff880107b71c08 0000000000000000 ffff880107b71c48 ffffffffa0079814
Oct 10 23:30:52 todaki kernel: [169016.034508]  ffff880107b71c38 ffffffff8111673e ffff880107b71c18 ffff88011517c2b0
Oct 10 23:30:52 todaki kernel: [169016.034571] Call Trace:
Oct 10 23:30:52 todaki kernel: [169016.034604]  [<ffffffffa0079cd0>] ? kzalloc.constprop.2+0x13/0x15 [i915]
Oct 10 23:30:52 todaki kernel: [169016.034663]  [<ffffffffa0079814>] i915_gem_execbuffer_reserve+0x13c/0x2fb [i915]
Oct 10 23:30:52 todaki kernel: [169016.034719]  [<ffffffff8111673e>] ? __kmalloc+0x103/0x115
Oct 10 23:30:52 todaki kernel: [169016.034768]  [<ffffffffa007a117>] i915_gem_do_execbuffer+0x445/0x10d6 [i915]
Oct 10 23:30:52 todaki kernel: [169016.034828]  [<ffffffffa007411c>] ? drm_gem_object_unreference+0x1a/0x1c [i915]
Oct 10 23:30:52 todaki kernel: [169016.034890]  [<ffffffffa007b018>] ? i915_gem_execbuffer2+0x53/0x147 [i915]
Oct 10 23:30:52 todaki kernel: [169016.034942]  [<ffffffff81041325>] ? should_resched+0xe/0x2d
Oct 10 23:30:52 todaki kernel: [169016.034992]  [<ffffffffa007b0aa>] i915_gem_execbuffer2+0xe5/0x147 [i915]
Oct 10 23:30:52 todaki kernel: [169016.035042]  [<ffffffff81041325>] ? should_resched+0xe/0x2d
Oct 10 23:30:52 todaki kernel: [169016.035093]  [<ffffffffa001d7f7>] drm_ioctl+0x29e/0x37b [drm]
Oct 10 23:30:52 todaki kernel: [169016.035144]  [<ffffffffa007afc5>] ? i915_gem_execbuffer+0x21d/0x21d [i915]
Oct 10 23:30:52 todaki kernel: [169016.035197]  [<ffffffff81134f0a>] do_vfs_ioctl+0x460/0x4a1
Oct 10 23:30:52 todaki kernel: [169016.035240]  [<ffffffff811f358f>] ? security_file_permission+0x2e/0x33
Oct 10 23:30:52 todaki kernel: [169016.035289]  [<ffffffff81127006>] ? rw_verify_area+0xb0/0xcd
Oct 10 23:30:52 todaki kernel: [169016.035332]  [<ffffffff81134fa1>] sys_ioctl+0x56/0x79
Oct 10 23:30:52 todaki kernel: [169016.035372]  [<ffffffff8148e842>] system_call_fastpath+0x16/0x1b
Oct 10 23:30:52 todaki kernel: [169016.035416] Code: 66 66 66 66 90 48 8b 47 08 48 89 fb 41 89 f4 41 88 d5 4c 8b b0 48 03 00 00 8b 87 e0 00 00 00 25 00 e0 01 00 3d 00 e0 01 00 75 02 <0f> 0b 48 83 bf 88 00 00 00 00 74 68 85 f6 74 0d 41 8d 54 24 ff 
Oct 10 23:30:52 todaki kernel: [169016.035684] RIP  [<ffffffffa0077628>] i915_gem_object_pin+0x3a/0x13b [i915]
Oct 10 23:30:52 todaki kernel: [169016.035747]  RSP <ffff880107b71ba8>
Oct 10 23:30:52 todaki kernel: [169053.918162] ------------[ cut here ]------------
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