On 18/10/2023 17:43, Andi Shyti wrote:
Hi Vinay,

Possible regressions

   • igt@gem_exec_nop@basic-series:

       □ shard-glk: PASS -> INCOMPLETE +1 other test incomplete
   • igt@kms_big_fb@4-tiled-max-hw-stride-64bpp-rotate-0-hflip-async-flip:

       □ shard-dg2: PASS -> TIMEOUT
   • igt@kms_cursor_crc@cursor-onscreen-64x21@pipe-d-hdmi-a-1:

       □ shard-tglu: PASS -> INCOMPLETE
   • igt@kms_psr@psr2_suspend:

       □ shard-mtlp: NOTRUN -> FAIL

these failures look unrelated and besides they are not related to
MTL.

There is something new on the shards which _seems_ to be implicating this patch.

This previously all green test started failing in a bad way:

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_13775/shard-mtlp-6/igt@sysfs_preempt_timeout@time...@vecs0.html

<5> [97.816201] Fence expiration time out 
i915-0000:00:02.0:sysfs_preempt_t[1166]:2!
<3> [187.682308] INFO: task kworker/0:3:165 blocked for more than 61 seconds.
<3> [187.689294]       Tainted: G        W          
6.6.0-rc6-CI_DRM_13775-ge69e078f7bef+ #1
<3> [187.697375] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
<6> [187.705354] task:kworker/0:3     state:D stack:13504 pid:165   ppid:2      
flags:0x00004000
<6> [187.705375] Workqueue: i915-unordered intel_gt_watchdog_work [i915]
<6> [187.705671] Call Trace:
<6> [187.705675]  <TASK>
<6> [187.705683]  __schedule+0x3a0/0xd70
<6> [187.705704]  schedule+0x5c/0xd0
<6> [187.705713]  guc_context_cancel_request+0x45e/0x9f0 [i915]
<6> [187.706078]  ? __pfx_autoremove_wake_function+0x10/0x10
<6> [187.706091]  ? intel_gt_watchdog_work+0x20/0x260 [i915]
<6> [187.706377]  intel_gt_watchdog_work+0xd1/0x260 [i915]
<6> [187.706624]  ? process_scheduled_works+0x264/0x530
<6> [187.706635]  process_scheduled_works+0x2db/0x530
<6> [187.706650]  ? __pfx_worker_thread+0x10/0x10
<6> [187.706656]  worker_thread+0x18c/0x350
<6> [187.706664]  ? __pfx_worker_thread+0x10/0x10
<6> [187.706670]  kthread+0xfe/0x130
<6> [187.706678]  ? __pfx_kthread+0x10/0x10
<6> [187.706687]  ret_from_fork+0x2c/0x50
<6> [187.706696]  ? __pfx_kthread+0x10/0x10
<6> [187.706704]  ret_from_fork_asm+0x1b/0x30
<6> [187.706724]  </TASK>

I am not claiming it is at fault but the transition from green to timing out 
looks clear.

Regards,

Tvrtko

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