Bug 109387 - [CI][BAT] igt@i915_selftest@live_contexts - dmesg-warn - Unclaimed read from register 0x2074
Summary: [CI][BAT] igt@i915_selftest@live_contexts - dmesg-warn - Unclaimed read from ...
Status: NEW
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: XOrg git
Hardware: Other All
: medium normal
Assignee: Don Hiatt
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard: ReadyForDev
Keywords:
Depends on:
Blocks:
 
Reported: 2019-01-18 20:26 UTC by Martin Peres
Modified: 2019-02-15 17:43 UTC (History)
3 users (show)

See Also:
i915 platform: BYT
i915 features:


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Description Martin Peres 2019-01-18 20:26:42 UTC
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5449/fi-byt-squawks/igt@i915_selftest@live_contexts.html

<4> [472.283986] ------------[ cut here ]------------
<4> [472.284062] Unclaimed read from register 0x2074
<4> [472.284216] WARNING: CPU: 0 PID: 153 at drivers/gpu/drm/i915/intel_uncore.c:1093 __unclaimed_reg_debug+0x40/0x50 [i915]
<4> [472.284221] Modules linked in: i915(+) amdgpu chash gpu_sched ttm vgem snd_hda_codec_hdmi btusb coretemp btrtl btbcm crct10dif_pclmul btintel crc32_pclmul ghash_clmulni_intel bluetooth cdc_ether usbnet r8152 ecdh_generic mii snd_hda_codec snd_hwdep snd_hda_core snd_pcm prime_numbers lpc_ich [last unloaded: i915]
<4> [472.284261] CPU: 0 PID: 153 Comm: kworker/0:2 Tainted: G     U            5.0.0-rc2-CI-CI_DRM_5449+ #1
<4> [472.284266] Hardware name: GOOGLE Squawks/Squawks, BIOS MrChromebox 02/04/2018
<4> [472.284365] Workqueue: events_long i915_hangcheck_elapsed [i915]
<4> [472.284465] RIP: 0010:__unclaimed_reg_debug+0x40/0x50 [i915]
<4> [472.284472] Code: 74 05 5b 5d 41 5c c3 45 84 e4 48 c7 c0 b6 38 75 a0 48 c7 c6 ac 38 75 a0 48 0f 44 f0 89 ea 48 c7 c7 bf 38 75 a0 e8 a0 f9 a3 e0 <0f> 0b 83 2d 27 2c 1a 00 01 5b 5d 41 5c c3 66 90 41 56 41 55 41 89
<4> [472.284477] RSP: 0018:ffffc900009dfd00 EFLAGS: 00010086
<4> [472.284483] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
<4> [472.284488] RDX: 0000000000000007 RSI: ffffffff820cb6f9 RDI: 00000000ffffffff
<4> [472.284492] RBP: 0000000000002074 R08: 0000000000000000 R09: 0000000000000001
<4> [472.284497] R10: ffffc900009dfcc8 R11: 0000000000000000 R12: 0000000000000001
<4> [472.284502] R13: 0000000000000001 R14: 00000000044089a8 R15: 0000000000000202
<4> [472.284507] FS:  0000000000000000(0000) GS:ffff888077800000(0000) knlGS:0000000000000000
<4> [472.284512] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [472.284517] CR2: 00007fd937ea55a0 CR3: 0000000072e54000 CR4: 00000000001006f0
<4> [472.284522] Call Trace:
<4> [472.284627]  fwtable_read32+0x1e8/0x250 [i915]
<4> [472.284730]  intel_engine_get_active_head+0xbe/0xd0 [i915]
<4> [472.284833]  i915_hangcheck_elapsed+0x17a/0x4d0 [i915]
<4> [472.284853]  ? lock_acquire+0xa6/0x1c0
<4> [472.284872]  process_one_work+0x245/0x610
<4> [472.284890]  worker_thread+0x37/0x380
<4> [472.284901]  ? process_one_work+0x610/0x610
<4> [472.284907]  kthread+0x119/0x130
<4> [472.284914]  ? kthread_park+0x80/0x80
<4> [472.284926]  ret_from_fork+0x3a/0x50
<4> [472.284949] irq event stamp: 2360500
<4> [472.284956] hardirqs last  enabled at (2360499): [<ffffffff8197cb74>] _raw_spin_unlock_irq+0x24/0x50
<4> [472.284962] hardirqs last disabled at (2360500): [<ffffffff8197c9ad>] _raw_spin_lock_irqsave+0xd/0x50
<4> [472.284968] softirqs last  enabled at (2360350): [<ffffffff81c0033a>] __do_softirq+0x33a/0x4b9
<4> [472.284976] softirqs last disabled at (2360343): [<ffffffff810b5081>] irq_exit+0xd1/0xe0
<4> [472.285074] WARNING: CPU: 0 PID: 153 at drivers/gpu/drm/i915/intel_uncore.c:1093 __unclaimed_reg_debug+0x40/0x50 [i915]
<4> [472.285079] ---[ end trace 1cd981e094570460 ]---
Comment 1 CI Bug Log 2019-01-18 20:27:19 UTC
The CI Bug Log issue associated to this bug has been updated.

### New filters associated

* BYT: igt@i915_selftest@live_contexts - dmesg-warn - Unclaimed read from register 0x2074
  - https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5449/fi-byt-squawks/igt@i915_selftest@live_contexts.html
Comment 2 CI Bug Log 2019-01-18 20:28:24 UTC
The CI Bug Log issue associated to this bug has been updated.

### New filters associated

* BYT: igt@runner@aborted - fail - Previous test: i915_selftest (live_contexts)
  - https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5449/fi-byt-squawks/igt@runner@aborted.html
Comment 3 Chris Wilson 2019-01-18 20:38:41 UTC
Something else dropped the forcewake and/or runtime pm. There is a runtime_pm_get just prior to that in the code.
Comment 4 Don Hiatt 2019-02-14 22:54:57 UTC
Looking at http://gfx-ci.fi.intel.com/cibuglog-ng/ fdo#109387 is showing Never Seen with 0/197. 

Does this mean that we haven't seen this again? And if so, can we just close this?

Sorry if I'm reading this wrong.

Thank you!

Don
Comment 5 Lakshmi 2019-02-15 09:10:07 UTC
(In reply to Don Hiatt from comment #4)
> Looking at http://gfx-ci.fi.intel.com/cibuglog-ng/ fdo#109387 is showing
> Never Seen with 0/197. 
> 
> Does this mean that we haven't seen this again? And if so, can we just close
> this?
> 
> Sorry if I'm reading this wrong.
> 
> Thank you!
> 
> Don

This issue occurred only once CI_DRM_5449 (3 weeks, 6 days / 689 runs ago), but not seen later. Since this is a BAT failure, we keep monitor this issue. If this issue doesn't occur for the next 3 months we can close this issue, otherwise we need necessary justification to close this issue.


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