Bug 111939

Summary:	[CI][DRMTIP] igt@gem_ctx_isolation@rcs0-dirty-create - dmesg-warn - NMI backtrace for cpu 1
Product:	DRI	Reporter:	Lakshmi <lakshminarayana.vudum>
Component:	DRM/Intel	Assignee:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Status:	RESOLVED MOVED	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	normal
Priority:	medium	CC:	intel-gfx-bugs
Version:	DRI git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:	I965G	i915 features:	GEM/Other

Description Lakshmi 2019-10-09 15:14:44 UTC

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_382/fi-bwr-2160/igt@gem_ctx_isolation@rcs0-dirty-create.html
<4> [390.262939] NMI backtrace for cpu 1
<4> [390.262941] CPU: 1 PID: 1166 Comm: gem_ctx_isolati Tainted: G     U            5.4.0-rc1-g78b99839aed8-drmtip_382+ #1
<4> [390.262943] Hardware name: Dell Inc.                 OptiPlex 745                 /0GW726, BIOS 2.3.1  05/21/2007
<4> [390.262943] RIP: 0010:memchr+0x8/0x20
<4> [390.262945] Code: 0b 48 83 c1 01 4c 39 c1 75 ed f3 c3 48 83 c0 01 4c 39 c2 73 dc 31 c0 c3 f3 c3 48 89 f8 c3 0f 1f 40 00 48 01 fa eb 0c 40 38 37 <48> 8d 47 01 74 0b 48 89 c7 48 39 d7 75 ef 31 c0 c3 48 89 f8 c3 0f
<4> [390.262946] RSP: 0018:ffffa3dd808a7980 EFLAGS: 00000016
<4> [390.262948] RAX: ffff9656bf5fa557 RBX: 000000000000004f RCX: 0000000000000001
<4> [390.262949] RDX: ffff9656bf5fa58f RSI: 000000000000000a RDI: ffff9656bf5fa557
<4> [390.262950] RBP: 000000000000000f R08: 0000000000000000 R09: 000000000000000f
<4> [390.262951] R10: 0000000000000000 R11: ffffa3dd808a79b5 R12: ffffffff85b7c7c0
<4> [390.262951] R13: ffffa3dd808a79a8 R14: 0000000000000000 R15: ffff9656bf5fa540
<4> [390.262952] FS:  00007fafa0649e40(0000) GS:ffff9656bde80000(0000) knlGS:0000000000000000
<4> [390.262953] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [390.262954] CR2: 00007faf9faaaddc CR3: 0000000039c30000 CR4: 00000000000006e0
<4> [390.262955] Call Trace:
<4> [390.262955]  msg_print_text+0x138/0x260
<4> [390.262956]  ? console_unlock+0x8d/0x5b0
<4> [390.262957]  console_unlock+0x140/0x5b0
<4> [390.262957]  vprintk_emit+0xf7/0x340
<4> [390.262958]  printk+0x4d/0x69
<4> [390.262959]  trace_printk_seq+0x42/0x90
<4> [390.262960]  ftrace_dump+0x1ef/0x270
<4> [390.262960]  trace_die_handler+0x1b/0x30
<4> [390.262961]  notifier_call_chain+0x34/0x90
<4> [390.262962]  __atomic_notifier_call_chain+0x69/0x110
<4> [390.262962]  notify_die+0x5a/0xa0
<4> [390.262963]  __die+0xb0/0xd0
<4> [390.262964]  no_context+0x1b7/0x570
<4> [390.262964]  page_fault+0x34/0x40
<4> [390.262965] RIP: 0010:__rb_erase_color+0xdb/0x260
<4> [390.262967] Code: 48 8b 6b 08 48 39 d5 0f 85 64 ff ff ff 48 8b 6b 10 f6 45 00 01 4c 8b 6d 08 75 5c 48 89 d8 4c 89 6b 10 48 89 5d 08 48 83 c8 01 <49> 89 45 00 48 8b 03 48 89 45 00 48 83 e0 fc 48 89 2b 74 23 48 3b
<4> [390.262968] RSP: 0018:ffffa3dd808a7d50 EFLAGS: 00010282
<4> [390.262969] RAX: ffff9656b3333329 RBX: ffff9656b3333328 RCX: 0000000000000000
<4> [390.262970] RDX: 0000000000000000 RSI: ffff9656ba7a7898 RDI: ffff9656b3333328
<4> [390.262971] RBP: ffff96569fd694b0 R08: 0000000000000017 R09: 00000000fffffffe
<4> [390.262972] R10: 000000008d7f774f R11: 00000000ff523dc8 R12: ffff9656ba7a7898
<4> [390.262973] R13: 0000000000000000 R14: ffffffff8320bdf0 R15: 0000000000000000
<4> [390.262974]  ? vmacache_find+0xb0/0xb0
<4> [390.262975]  unlink_file_vma+0x36/0x50
<4> [390.262975]  free_pgtables+0xb9/0x110
<4> [390.262976]  exit_mmap+0xa3/0x180
<4> [390.262977]  mmput+0x5d/0x150
<4> [390.262977]  do_exit+0x5fb/0xd70
<4> [390.262978]  do_group_exit+0x42/0xb0
<4> [390.262979]  __x64_sys_exit_group+0xf/0x10
<4> [390.262979]  do_syscall_64+0x4f/0x210
<4> [390.262980]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [390.262981] RIP: 0033:0x7faf9faaae06
<4> [390.262981] Code: Bad RIP value.
<4> [390.262982] RSP: 002b:00007ffd21134f68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
<4> [390.262984] RAX: ffffffffffffffda RBX: 00007faf9fdad740 RCX: 00007faf9faaae06
<4> [390.262985] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
<4> [390.262986] RBP: 0000000000000000 R08: 00000000000000e7 R09: ffffffffffffff80
<4> [390.262987] R10: 00007faf93e260c0 R11: 0000000000000246 R12: 00007faf9fdad740
<4> [390.262988] R13: 0000000000000003 R14: 00007faf9fdb6628 R15: 0000000000000000
<3> [390.262997] rcu: rcu_preempt kthread starved for 65002 jiffies! g191829 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
<0> [390.263620] gem_exec-1067    1d..1 228653088us : __i915_request_submit: rcs0 fence 3:107601, current 107598
<3> [390.264952] rcu: RCU grace-period kthread stack dump:
<0> [390.266549] gem_exec-1067    1.... 228653212us : __i915_request_commit: rcs0 fence 3:107602
<6> [390.267976] rcu_preempt     I14368    10      2 0x80004000
<0> [390.269564] gem_exec-1067    1d..1 228653224us : __i915_request_submit: rcs0 fence 3:107602, current 107598
<4> [390.271162] Call Trace:
<0> [390.272979] gem_exec-1067    1.... 228653382us : __i915_request_commit: rcs0 fence 3:107603
<4> [390.274624]  ? __schedule+0x2ef/0x7f0
<0> [390.276440] gem_exec-1067    1d..1 228653395us : __i915_request_submit: rcs0 fence 3:107603, current 107598
<4> [390.278075]  schedule+0x34/0xc0
<0> [390.279877] gem_exec-1067    1.... 228653522us : __i915_request_commit: rcs0 fence 3:107604
<4> [390.281486]  schedule_timeout+0x1cc/0x3f0
<0> [390.283307] gem_exec-1067    1d..1 228653534us : __i915_request_submit: rcs0 fence 3:107604, current 107598
<4> [390.284923]  ? __next_timer_interrupt+0xc0/0xc0
<0> [390.286725] gem_exec-1067    1.... 228653658us : __i915_request_commit: rcs0 fence 3:107605
<4> [390.288318]  rcu_gp_kthread+0x604/0xb70
<0> [390.290095] gem_exec-1067    1d..1 228653671us : __i915_request_submit: rcs0 fence 3:107605, current 107598
<4> [390.291668]  ? rcu_barrier_func+0xa0/0xa0
<0> [390.293414] gem_exec-1067    1.... 228653793us : __i915_request_commit: rcs0 fence 3:107606
<4> [390.294972]  kthread+0x119/0x130
<0> [390.296724] gem_exec-1067    1d..1 228653806us : __i915_request_submit: rcs0 fence 3:107606, current 107598
<4> [390.298297]  ? kthread_park+0x80/0x80
<0> [390.300064] gem_exec-1067    1.... 228653932us : __i915_request_commit: rcs0 fence 3:107607
<4> [390.301649]  ret_from_fork+0x3a/0x50

Comment 1 CI Bug Log 2019-10-09 15:15:36 UTC

The CI Bug Log issue associated to this bug has been updated.

### New filters associated

* BWR: igt@gem_ctx_isolation@rcs0-dirty-create - dmesg-warn -  NMI backtrace for cpu 1
  - https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_382/fi-bwr-2160/igt@gem_ctx_isolation@rcs0-dirty-create.html

Comment 2 Chris Wilson 2019-10-09 16:50:53 UTC

Smells like stray GPU writes.

Comment 3 Francesco Balestrieri 2019-10-10 05:58:14 UTC

Why the i965 platform?

Comment 4 Lakshmi 2019-10-10 11:25:13 UTC

(In reply to Francesco Balestrieri from comment #3)
> Why the i965 platform?

Failure is on fi-bwr-2160 machine.

Comment 5 Martin Peres 2019-11-29 19:38:39 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/intel/issues/489.

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