[Bug 108561] [CI][BAT] igt at gem_busy@close-race - dmesg-fail - general protection fault: 0000 [#1] PREEMPT SMP PTI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108561

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit a590d0fdbaa56f482ff515e1040b6d9b1b200d63 (HEAD -> drm-misc-next,
drm-misc/drm-misc-next)
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Oct 26 09:03:02 2018 +0100

    dma-buf: Update reservation shared_count after adding the new fence

    We need to serialise the addition of a new fence into the shared list
    such that the fence is visible before we claim it is there. Otherwise a
    concurrent reader of the shared fence list will see an uninitialised
    fence slot before it is set.

      <4> [109.613162] general protection fault: 0000 [#1] PREEMPT SMP PTI
      <4> [109.613177] CPU: 1 PID: 1357 Comm: gem_busy Tainted: G     U        
   4.19.0-rc8-CI-CI_DRM_5035+ #1
      <4> [109.613189] Hardware name: Dell Inc. XPS 8300  /0Y2MRG, BIOS A06
10/17/2011
      <4> [109.613252] RIP: 0010:i915_gem_busy_ioctl+0x146/0x380 [i915]
      <4> [109.613261] Code: 0b 43 04 49 83 c6 08 4d 39 e6 89 43 04 74 6d 4d 8b
3e e8 5d 54 f4 e0 85 c0 74 0d 80 3d 08 71 1d 00 00
      0f 84 bb 00 00 00 31 c0 <49> 81 7f 08 20 3a 2c a0 75 cc 41 8b 97 50 02 00
00 49 8b 8f a8 00
      <4> [109.613283] RSP: 0018:ffffc9000044bcf8 EFLAGS: 00010246
      <4> [109.613292] RAX: 0000000000000000 RBX: ffffc9000044bdc0 RCX:
0000000000000001
      <4> [109.613302] RDX: 0000000000000000 RSI: 00000000ffffffff RDI:
ffffffff822474a0
      <4> [109.613311] RBP: ffffc9000044bd28 R08: ffff88021e158680 R09:
0000000000000001
      <4> [109.613321] R10: 0000000000000040 R11: 0000000000000000 R12:
ffff88021e1641b8
      <4> [109.613331] R13: 0000000000000003 R14: ffff88021e1641b0 R15:
6b6b6b6b6b6b6b6b
      <4> [109.613341] FS:  00007f9c9fc84980(0000) GS:ffff880227a40000(0000)
knlGS:0000000000000000
      <4> [109.613352] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      <4> [109.613360] CR2: 00007f9c9fcb8000 CR3: 00000002247d4005 CR4:
00000000000606e0

    Fixes: 27836b641c1b ("dma-buf: remove shared fence staging in reservation
object")
    Testcase: igt/gem_busy/close-race
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Christian König <christian.koenig at amd.com>
    Cc: Junwei Zhang <Jerry.Zhang at amd.com>
    Cc: Huang Rui <ray.huang at amd.com>
    Cc: Sumit Semwal <sumit.semwal at linaro.org>
    Reviewed-by: Christian König <christian.koenig at amd.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20181026080302.11507-1-chris@chris-wilson.co.uk

-- 
You are receiving this mail because:
You are on the CC list for the bug.
You are the QA Contact for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20181026/d0d99726/attachment.html>