igt@i915_selftest@live@hangcheck - Incomplete/dmesg-warn - GEM_BUG_ON(engine->execlists.queue_priority_hint != (-((int)(~0U >> 1)) - 1))

https://intel-gfx-ci.01.org/tree/drm-tip/IGT_5929/shard-apl7/igt@i915_selftest@live@hangcheck.html

<4> [798.921843] ------------[ cut here ]------------
<4> [798.921861] WARNING: CPU: 3 PID: 1163 at kernel/rcu/tree_plugin.h:297 rcu_note_context_switch+0x86/0x620
<4> [798.921880] Modules linked in: i915(+) vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio mei_hdcp x86_pkg_temp_thermal coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_intel_dspcfg snd_hda_codec r8169 snd_hwdep lpc_ich realtek snd_hda_core snd_pcm mei_me mei intel_lpss_pci prime_numbers pinctrl_broxton [last unloaded: i915]
<4> [798.930192] CPU: 3 PID: 1163 Comm: i915_selftest Tainted: G     UD W         5.11.0-rc1-CI-CI_DRM_9533+ #1
<4> [798.930205] Hardware name:  /NUC6CAYB, BIOS AYAPLCEL.86A.0049.2018.0508.1356 05/08/2018
<4> [798.930215] RIP: 0010:rcu_note_context_switch+0x86/0x620
<4> [798.930225] Code: 7e 85 c0 75 0d 65 8b 05 84 47 ed 7e 85 c0 74 02 0f 0b 45 84 ed 75 15 65 48 8b 04 25 40 6f 01 00 8b 88 d4 03 00 00 85 c9 7e 02 <0f> 0b 65 48 8b 04 25 40 6f 01 00 8b 90 d4 03 00 00 85 d2 7e 0f 41
<4> [798.930244] RSP: 0018:ffffc900005bb248 EFLAGS: 00010002
<4> [798.930252] RAX: ffff888112d92900 RBX: ffff8882779bbdc0 RCX: 0000000000000001
<4> [798.930261] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8235fbee
<4> [798.931130] RBP: ffffc900005bb2d8 R08: 0000000000000000 R09: 0000000000000000
<4> [798.931139] R10: 0000011d489687e0 R11: ffffc900005bafb0 R12: ffff888112d92900
<4> [798.931147] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
<4> [798.931156] FS:  00007fbd06f4fe40(0000) GS:ffff888277980000(0000) knlGS:0000000000000000
<4> [798.931166] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [798.931174] CR2: 0000555a7754fc28 CR3: 0000000130bac000 CR4: 00000000003506e0
<4> [798.931183] Call Trace:
<4> [798.931193]  __schedule+0xd7/0x990
<4> [798.931206]  ? lock_release+0x1ff/0x2c0
<4> [798.931215]  ? wait_for_completion+0x7b/0x110
<4> [798.931223]  schedule+0x38/0xe0
<4> [798.931230]  schedule_timeout+0x233/0x2e0
<4> [798.931238]  ? lock_release+0x1ff/0x2c0
<4> [798.931245]  ? lock_acquire+0x19e/0x3c0
<4> [798.931252]  ? lock_release+0x1ff/0x2c0
<4> [798.931260]  ? wait_for_completion+0x7b/0x110
<4> [798.931268]  wait_for_completion+0xae/0x110
<4> [798.931276]  virt_efi_set_variable+0x15b/0x170
<4> [798.931287]  efivar_entry_set_safe+0xd7/0x210
<4> [798.931297]  ? kmsg_dump_get_buffer+0x22d/0x2e0
<4> [798.931306]  efi_pstore_write+0x115/0x180
<4> [798.932175]  pstore_dump+0x180/0x260
<4> [798.932189]  kmsg_dump+0xae/0x1d0
<4> [798.932198]  oops_end+0x3e/0x90
<4> [798.932207]  do_trap+0xd9/0x100
<4> [798.932216]  ? __engine_park.cold.18+0x115/0x1d1 [i915]
<4> [798.933422]  ? __engine_park.cold.18+0x115/0x1d1 [i915]
<4> [798.933780]  do_error_trap+0x7c/0xf0
<4> [798.933792]  ? __engine_park.cold.18+0x115/0x1d1 [i915]
<4> [798.934099]  exc_invalid_op+0x49/0x60
<4> [798.934109]  ? __engine_park.cold.18+0x115/0x1d1 [i915]
<4> [798.934417]  asm_exc_invalid_op+0x12/0x20
<4> [798.934427] RIP: 0010:__engine_park.cold.18+0x115/0x1d1 [i915]
<4> [798.934749] Code: 00 48 c7 c2 d0 d2 34 a0 48 c7 c7 25 13 31 a0 e8 06 2a e9 e0 bf 01 00 00 00 e8 7c fc e8 e0 31 f6 bf 09 00 00 00 e8 90 c5 d9 e0 <0f> 0b 48 c7 c1 c0 8e 37 a0 ba ca 00 00 00 48 c7 c6 b0 d2 34 a0 48
<4> [798.934767] RSP: 0018:ffffc900005bb7e8 EFLAGS: 00010246
<4> [798.934777] RAX: 0000000000000240 RBX: ffff88810f9c21c0 RCX: 0000000000000006
<4> [798.934785] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009
<4> [798.934794] RBP: ffffc900005bb848 R08: 0000000000000001 R09: 0000000000000001
<4> [798.934802] R10: 0000000029f4371b R11: 0000000065a99ada R12: 0000000000000000
<4> [798.934810] R13: fffffffffffffff5 R14: ffff88810c950040 R15: ffff88810c950040
<4> [798.934825]  ? __engine_park.cold.18+0x115/0x1d1 [i915]
<4> [798.935133]  ____intel_wakeref_put_last+0x22/0x70 [i915]
<4> [798.935385]  i915_request_retire+0x298/0x580 [i915]
<4> [798.935685]  retire_requests+0x4f/0x70 [i915]
<4> [798.935955]  intel_gt_retire_requests_timeout+0x290/0x550 [i915]
<4> [798.936224]  intel_gt_wait_for_idle+0x31/0x70 [i915]
<4> [798.936506]  igt_flush_test+0x51/0xd0 [i915]
<4> [798.936802]  igt_handle_error+0xb0/0x1a0 [i915]
<4> [798.937076]  __i915_subtests.cold.7+0x42/0x92 [i915]
<4> [798.937408]  ? __i915_live_teardown+0x50/0x50 [i915]
<4> [798.937762]  ? __intel_gt_live_setup+0x30/0x30 [i915]
<4> [798.938054]  intel_hangcheck_live_selftests+0xae/0xf0 [i915]
<4> [798.938326]  __run_selftests.part.3+0x100/0x161 [i915]
<4> [798.938659]  i915_live_selftests.cold.5+0x1f/0x47 [i915]
<4> [798.938980]  i915_pci_probe+0x93/0x1d0 [i915]
<4> [798.939221]  ? _raw_spin_unlock_irqrestore+0x2f/0x50
<4> [798.939234]  pci_device_probe+0x9e/0x110
<4> [798.939245]  really_probe+0x1c4/0x430
<4> [798.939255]  driver_probe_device+0xd9/0x140
<4> [798.939263]  device_driver_attach+0x4a/0x50
<4> [798.939271]  __driver_attach+0x83/0x140
<4> [798.939278]  ? device_driver_attach+0x50/0x50
<4> [798.939285]  ? device_driver_attach+0x50/0x50
<4> [798.939293]  bus_for_each_dev+0x75/0xc0
<4> [798.939301]  bus_add_driver+0x14b/0x1f0
<4> [798.939309]  driver_register+0x66/0xb0
<4> [798.939317]  i915_init+0x70/0x87 [i915]
<4> [798.939547]  ? 0xffffffffa059f000
<4> [798.939553]  do_one_initcall+0x56/0x2e0
<4> [798.939562]  ? kmem_cache_alloc_trace+0x367/0x420
<4> [798.939572]  do_init_module+0x55/0x200
<4> [798.939581]  load_module+0x27a4/0x2a40
<4> [798.939594]  ? __do_sys_finit_module+0xad/0x110
<4> [798.939602]  __do_sys_finit_module+0xad/0x110
<4> [798.939612]  do_syscall_64+0x33/0x80
<4> [798.939621]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
<4> [798.939630] RIP: 0033:0x7fbd065ea839
<4> [798.939640] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 1f f6 2c 00 f7 d8 64 89 01 48
<4> [798.939659] RSP: 002b:00007ffdbca678d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
<4> [798.939671] RAX: ffffffffffffffda RBX: 0000556a527b7090 RCX: 00007fbd065ea839
<4> [798.939680] RDX: 0000000000000000 RSI: 0000556a527a97a0 RDI: 0000000000000007
<4> [798.939688] RBP: 0000556a527a97a0 R08: 0000000000000004 R09: 0000556a527ae020
<4> [798.939696] R10: 00007ffdbca67a20 R11: 0000000000000246 R12: 0000000000000000
<4> [798.939704] R13: 0000556a527ba470 R14: 0000000000000020 R15: 0000000000000048
<4> [798.939716] irq event stamp: 46083565
<4> [798.939723] hardirqs last  enabled at (46083565): [<ffffffff8101f292>] do_error_trap+0xa2/0xf0
<4> [798.939736] hardirqs last disabled at (46083564): [<ffffffff81a8e3cf>] exc_invalid_op+0x1f/0x60
<4> [798.939748] softirqs last  enabled at (46083530): [<ffffffff81e00342>] __do_softirq+0x342/0x48e
<4> [798.939760] softirqs last disabled at (46083339): [<ffffffff81c00f52>] asm_call_irq_on_stack+0x12/0x20
<4> [798.939773] ---[ end trace 6d2610c7ad6b2843 ]---
<4> [799.077759] RIP: 0010:__engine_park.cold.18+0x115/0x1d1 [i915]
<4> [799.078568] Code: 00 48 c7 c2 d0 d2 34 a0 48 c7 c7 25 13 31 a0 e8 06 2a e9 e0 bf 01 00 00 00 e8 7c fc e8 e0 31 f6 bf 09 00 00 00 e8 90 c5 d9 e0 <0f> 0b 48 c7 c1 c0 8e 37 a0 ba ca 00 00 00 48 c7 c6 b0 d2 34 a0 48
<4> [799.078887] RSP: 0018:ffffc900005bb7e8 EFLAGS: 00010246
<4> [799.078938] RAX: 0000000000000240 RBX: ffff88810f9c21c0 RCX: 0000000000000006
<4> [799.078949] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009
<4> [799.078958] RBP: ffffc900005bb848 R08: 0000000000000001 R09: 0000000000000001
<4> [799.078966] R10: 0000000029f4371b R11: 0000000065a99ada R12: 0000000000000000
<4> [799.079251] R13: fffffffffffffff5 R14: ffff88810c950040 R15: ffff88810c950040
<4> [799.079260] FS:  00007fbd06f4fe40(0000) GS:ffff888277980000(0000) knlGS:0000000000000000
<4> [799.079296] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [799.079306] CR2: 0000555a7754fc28 CR3: 0000000130bac000 CR4: 00000000003506e0
<6> [799.125264] i915_selftest (1163) used greatest stack depth: 10992 bytes left