[Bug 89388] New: [all regression]system hang and BUG: unable to handle kernel NULL pointer dereference at 0000000000000084 when kill X
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Sun Mar 1 21:47:51 PST 2015
https://bugs.freedesktop.org/show_bug.cgi?id=89388
Bug ID: 89388
Summary: [all regression]system hang and BUG: unable to handle
kernel NULL pointer dereference at 0000000000000084
when kill X
Product: DRI
Version: unspecified
Hardware: All
OS: Linux (All)
Status: NEW
Severity: critical
Priority: high
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: huax.lu at intel.com
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
Created attachment 113904
--> https://bugs.freedesktop.org/attachment.cgi?id=113904&action=edit
dmesg
==System Environment==
--------------------------
Regression: Yes, regression on drm-intel-next-queued branch.
good commit: cda54fe1188d4900843c0616acab7fb9c2989eef
bad commit: fd2d61341bf39d1054256c07d6eddd624ebc4241
no-working platforms: all
Libdrm:
(master)libdrm-2.4.59-31-gf799a527db2851b2890146a9ce777f73fea30176
Mesa: (master)b51ff50a767cc78d678ed3d2c25995f5c4194fea
Xf86_video_intel:
(master)2.99.917-164-g9fb815462902a1d2047e135cf5037f47eb0d83d2
Xserver:
(master)xorg-server-1.17.0-16-g3a06faf3fcdb7451125a46181f9152e8e59e9770
Libva: (master)f9741725839ea144e9a6a1827f74503ee39946c3
Libva_intel_driver: (master)e8fde1cdaafb93c2b54d6092a728d099ad7cdd11
==kernel==
--------------------------
drm-intel-nightly/855932144a48a66081a62288bea6f2bbbf48e2e7
commit 855932144a48a66081a62288bea6f2bbbf48e2e7
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date: Fri Feb 27 20:02:52 2015 +0100
drm-intel-nightly: 2015y-02m-27d-18h-58m-02s UTC integration manifest
==Bug detailed description==
-----------------------------
start X than kill X, system hang.
dmesg:
[ 41.365871] BUG: unable to handle kernel NULL pointer dereference at
0000000000000084
[ 41.366821] IP: [<ffffffffa007fbc7>] ilk_update_wm+0x11c/0xa81 [i915]
[ 41.367783] PGD 148dfb067 PUD 1444c7067 PMD 0
[ 41.368736] Oops: 0000 [#1] SMP
[ 41.369681] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
snd_hda_codec_hdmi pcspkr i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
[ 41.371877] CPU: 1 PID: 4823 Comm: X Not tainted
4.0.0-rc1_drm-intel-nightly_855932_20150228+ #10
[ 41.372996] task: ffff8800a44828f0 ti: ffff8801492c8000 task.ti:
ffff8801492c8000
[ 41.374129] RIP: 0010:[<ffffffffa007fbc7>] [<ffffffffa007fbc7>]
ilk_update_wm+0x11c/0xa81 [i915]
[ 41.375283] RSP: 0018:ffff8801492cb978 EFLAGS: 00010246
[ 41.376429] RAX: 0000000000000000 RBX: ffff880144660000 RCX:
ffff8801444d1c00
[ 41.377583] RDX: 0000000000021e1c RSI: 0000000000000008 RDI:
ffff88014952e000
[ 41.378734] RBP: ffff8800a7ca5000 R08: ffff8800a7ca5358 R09:
ffff8801493fc4f0
[ 41.379898] R10: 0000000000000003 R11: 0000000000003201 R12:
ffff88014952e000
[ 41.381061] R13: ffff8801492cba64 R14: 0000000000000000 R15:
ffff8800a7ca5358
[ 41.382221] FS: 00007fbe643058c0(0000) GS:ffff88014ec40000(0000)
knlGS:0000000000000000
[ 41.383398] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 41.384586] CR2: 0000000000000084 CR3: 0000000144c9e000 CR4:
00000000003406e0
[ 41.385791] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 41.387002] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 41.388208] Stack:
[ 41.389400] 0000000000000000 ffff880148ee3840 0000000000011220
0000000000000000
[ 41.390625] ffff880148ee3870 00000000492cb9e8 ffff880000000000
ffffffff810d2bf4
[ 41.391859] ffff8800a44828f0 0000000000011220 0000000000000000
0000000000000000
[ 41.393098] Call Trace:
[ 41.394333] [<ffffffff810d2bf4>] ? mempool_alloc+0x52/0x11c
[ 41.395594] [<ffffffffa00cad73>] ? intel_begin_crtc_commit+0x12e/0x165
[i915]
[ 41.396855] [<ffffffffa0056986>] ?
drm_atomic_helper_commit_planes+0x4e/0x143 [drm_kms_helper]
[ 41.398142] [<ffffffffa00e1c69>] ? intel_atomic_commit+0xa7/0xcd [i915]
[ 41.399415] [<ffffffffa005738d>] ?
drm_atomic_helper_disable_plane+0xbf/0x111 [drm_kms_helper]
[ 41.400700] [<ffffffffa000cbce>] ? __setplane_internal+0x4a/0x295 [drm]
[ 41.401988] [<ffffffffa00181f8>] ? drm_modeset_lock_all_crtcs+0x69/0x81
[drm]
[ 41.403283] [<ffffffffa000f994>] ? drm_mode_setplane+0x17f/0x1dc [drm]
[ 41.404580] [<ffffffffa00047d4>] ? drm_ioctl+0x344/0x3b3 [drm]
[ 41.405873] [<ffffffffa000f815>] ? drm_mode_getplane+0xcb/0xcb [drm]
[ 41.407167] [<ffffffff811228d2>] ? dput+0x192/0x1aa
[ 41.408458] [<ffffffff8110baf3>] ? kmem_cache_free+0xe2/0x11a
[ 41.409754] [<ffffffff811228d2>] ? dput+0x192/0x1aa
[ 41.411051] [<ffffffff8111fa62>] ? do_vfs_ioctl+0x360/0x424
[ 41.412350] [<ffffffff810442ea>] ? __set_task_blocked+0x5d/0x64
[ 41.413648] [<ffffffff8104616d>] ? __set_current_blocked+0x2d/0x40
[ 41.414949] [<ffffffff8111fb6f>] ? SyS_ioctl+0x49/0x7a
[ 41.416248] [<ffffffff810462d7>] ? SyS_rt_sigprocmask+0x5f/0x94
[ 41.417542] [<ffffffff81798e92>] ? system_call_fastpath+0x12/0x17
[ 41.418827] Code: 8b 44 24 70 be 08 00 00 00 89 94 24 98 00 00 00 48 8b 80
38 02 00 00 48 8b 40 10 c6 84 24 d8 00 00 00 04 c6 84 24 a9 00 00 00 01 <8b> 80
84 00 00 00 99 f7 fe 88 84 24 a8 00 00 00 8b 81 d0 01 00
[ 41.420280] RIP [<ffffffffa007fbc7>] ilk_update_wm+0x11c/0xa81 [i915]
[ 41.421675] RSP <ffff8801492cb978>
[ 41.423056] CR2: 0000000000000084
[ 41.434517] ---[ end trace 73cfb94e14dba7a1 ]---
==Reproduce steps==
----------------------------
1. clean boot system
2. xinit
3. pkill X
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