[Intel-gfx] ✗ Fi.CI.IGT: failure for series starting with [v7,1/8] drm/i915/gem: Break out some shmem backend utils

[Tvrtko Ursulin]

Hi,

On 06/10/2021 16:26, Patchwork wrote:
> *Patch Details*
> *Series:*	series starting with [v7,1/8] drm/i915/gem: Break out some 
> shmem backend utils
> *URL:*	https://patchwork.freedesktop.org/series/95501/ 
> <https://patchwork.freedesktop.org/series/95501/>
> *State:*	failure
> *Details:* 
> https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_21264/index.html 
> <https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_21264/index.html>
> 
> 
>   CI Bug Log - changes from CI_DRM_10688_full -> Patchwork_21264_full
> 
> 
>     Summary
> 
> *FAILURE*
> 
> Serious unknown changes coming with Patchwork_21264_full absolutely need 
> to be
> verified manually.
> 
> If you think the reported changes have nothing to do with the changes
> introduced in Patchwork_21264_full, please notify your bug team to allow 
> them
> to document this new failure mode, which will reduce false positives in CI.
> 
> 
>     Possible new issues
> 
> Here are the unknown changes that may have been introduced in 
> Patchwork_21264_full:
> 
> 
>       IGT changes
> 
> 
>         Possible regressions
> 
>   *
> 
>     igt at gem_sync@basic-many-each:
> 
>       o shard-apl: NOTRUN -> INCOMPLETE
>         <https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_21264/shard-apl7/igt@gem_sync@basic-many-each.html>
Something still fishy in the unlocked iterator? Or dma_resv_get_fences using it?

<6> [187.551235] [IGT] gem_sync: starting subtest basic-many-each
<1> [188.935462] BUG: kernel NULL pointer dereference, address: 0000000000000010
<1> [188.935485] #PF: supervisor write access in kernel mode
<1> [188.935495] #PF: error_code(0x0002) - not-present page
<6> [188.935504] PGD 0 P4D 0
<4> [188.935512] Oops: 0002 [#1] PREEMPT SMP NOPTI
<4> [188.935521] CPU: 2 PID: 1467 Comm: gem_sync Not tainted 5.15.0-rc4-CI-Patchwork_21264+ #1
<4> [188.935535] Hardware name:  /NUC6CAYB, BIOS AYAPLCEL.86A.0049.2018.0508.1356 05/08/2018
<4> [188.935546] RIP: 0010:dma_resv_get_fences+0x116/0x2d0
<4> [188.935560] Code: 10 85 c0 7f c9 be 03 00 00 00 e8 15 8b df ff eb bd e8 8e c6 ff ff eb b6 41 8b 04 24 49 8b 55 00 48 89 e7 8d 48 01 41 89 0c 24 <4c> 89 34 c2 e8 41 f2 ff ff 49 89 c6 48 85 c0 75 8c 48 8b 44 24 10
<4> [188.935583] RSP: 0018:ffffc900011dbcc8 EFLAGS: 00010202
<4> [188.935593] RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 0000000000000001
<4> [188.935603] RDX: 0000000000000010 RSI: ffffffff822e343c RDI: ffffc900011dbcc8
<4> [188.935613] RBP: ffffc900011dbd48 R08: ffff88812d255bb8 R09: 00000000fffffffe
<4> [188.935623] R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900011dbd44
<4> [188.935633] R13: ffffc900011dbd50 R14: ffff888113d29cc0 R15: 0000000000000000
<4> [188.935643] FS:  00007f68d17e9700(0000) GS:ffff888277900000(0000) knlGS:0000000000000000
<4> [188.935655] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [188.935665] CR2: 0000000000000010 CR3: 000000012d0a4000 CR4: 00000000003506e0
<4> [188.935676] Call Trace:
<4> [188.935685]  i915_gem_object_wait+0x1ff/0x410 [i915]
<4> [188.935988]  i915_gem_wait_ioctl+0xf2/0x2a0 [i915]
<4> [188.936272]  ? i915_gem_object_wait+0x410/0x410 [i915]
<4> [188.936533]  drm_ioctl_kernel+0xae/0x140
<4> [188.936546]  drm_ioctl+0x201/0x3d0
<4> [188.936555]  ? i915_gem_object_wait+0x410/0x410 [i915]
<4> [188.936820]  ? __fget_files+0xc2/0x1c0
<4> [188.936830]  ? __fget_files+0xda/0x1c0
<4> [188.936839]  __x64_sys_ioctl+0x6d/0xa0
<4> [188.936848]  do_syscall_64+0x3a/0xb0
<4> [188.936859]  entry_SYSCALL_64_after_hwframe+0x44/0xae

Regards,

Tvrtko