Re: [Intel-gfx] ✗ Fi.CI.IGT: failure for drm/i915/mtl: Don't set PIPE_CONTROL_FLUSH_L3 (rev5)

[Nirmoy Das <nirmoy.das@linux.intel.com>]

On 10/19/2023 10:14 AM, Tvrtko Ursulin wrote:
>
> 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@timeout@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.

https://jira.devtools.intel.com/browse/VLK-52300 This happening for a 
while as per the filter.

(machines are broken so cibuglog will not work till Tuesday)

>
> Regards,
>
> Tvrtko