Bug 110977 - [CI][BAT] igt@i915_selftest@live_execlists - incomplete - Kernel panic - not syncing: Fatal exception in interrupt
Summary: [CI][BAT] igt@i915_selftest@live_execlists - incomplete - Kernel panic - not ...
Status: RESOLVED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: XOrg git
Hardware: Other All
: highest normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard: ReadyForDev
Keywords:
Depends on:
Blocks:
 
Reported: 2019-06-24 08:03 UTC by Martin Peres
Modified: 2019-06-24 08:20 UTC (History)
1 user (show)

See Also:
i915 platform: CFL
i915 features: GEM/execlists


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Description Martin Peres 2019-06-24 08:03:07 UTC
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6319/fi-cfl-8109u/igt@i915_selftest@live_execlists.html

<4>[  457.942572] RIP: 0010:kick_siblings.isra.1+0xf/0x40 [i915]
<4>[  457.942572] Code: 00 e8 e5 2a b1 e0 48 89 df e8 8d ca 00 00 e9 cc f6 ff ff 0f 1f 84 00 00 00 00 00 48 8b 96 40 01 00 00 48 85 d2 74 1c 0f b6 07 <0f> b6 92 58 02 00 00 f7 d0 85 d0 74 0c f0 48 0f ba ae 88 ec ff ff
<4>[  457.942572] RSP: 0018:ffffc90002a23548 EFLAGS: 00010002
<4>[  457.942572] RAX: 0000000000000004 RBX: ffff8882565c2158 RCX: 0000000000000000
<4>[  457.942572] RDX: 6b6b6b6b6b6b6b6b RSI: ffff888110143830 RDI: ffff88816d6e3b98
<4>[  457.942572] RBP: ffffffffa0681690 R08: 0000000000000000 R09: 0000000000000000
<4>[  457.942572] R10: ffffc90002a233f8 R11: 0000000000000000 R12: ffff88816d6e3940
<4>[  457.942572] R13: ffff888110143830 R14: ffff8882ae69c040 R15: 0000000000000003
<4>[  457.942572] FS:  00007f8a6d724e40(0000) GS:ffff8882b5a00000(0000) knlGS:0000000000000000
<4>[  457.942572] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[  457.942572] CR2: 000056254b0e2248 CR3: 0000000248a7a002 CR4: 00000000003606f0
<0>[  457.942572] Kernel panic - not syncing: Fatal exception in interrupt
<0>[  457.960160] Shutting down cpus with NMI
<0>[  457.960160] Dumping ftrace buffer:
<0>[  457.960160]    (ftrace buffer empty)
<0>[  457.960160] Kernel Offset: disabled
Comment 1 CI Bug Log 2019-06-24 08:04:34 UTC
The CI Bug Log issue associated to this bug has been updated.

### New filters associated

* CFL: igt@i915_selftest@live_execlists - incomplete
  - https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6319/fi-cfl-8109u/igt@i915_selftest@live_execlists.html
  - https://intel-gfx-ci.01.org/tree/drm-tip/Trybot_4454/fi-cfl-8109u/igt@i915_selftest@live_execlists.html
Comment 2 Chris Wilson 2019-06-24 08:20:19 UTC
commit 12fdaf19e05b69992502eb9c97fc3c180f797564
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Fri Jun 21 09:07:29 2019 +0100

    drm/i915/execlists: Keep virtual context alive until after we kick
    
    The call to kick_siblings() dereferences the rq->context, so we should
    not drop our local reference until afterwards!
    
    v2: Stick to setting ce.inflight=NULL before kicking as this is what the
    other threads will check to see if the context is ready for takeover.
    
    Fixes: 22b7a426bbe1 ("drm/i915/execlists: Preempt-to-busy")
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
    Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
    Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
    Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
    Link: https://patchwork.freedesktop.org/patch/msgid/20190621080729.2652-1-chris@chris-wilson.co.uk


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