[Bug 69747] [HSW ULT]igt/kms_flip/flip-vs-panning-vs-hang-interruptible causes "[drm] stuck on render ring"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69747

--- Comment #9 from Paulo Zanoni <przanoni at gmail.com> ---
(In reply to comment #0)
> Created attachment 86433 [details]
> dmesg
> 
> System Environment:
> --------------------------
> Platform:  Haswell ULT
> Kernel: (drm-intel-next-queued)1b068ee25776533074251f1c6276c5f720c0284b
> 
> Bug detailed description:
> -----------------------------
> It causes <3>[  326.885041] [drm:intel_uncore_check_errors] *ERROR*
> Unclaimed register before interrupt. It happens on haswell ULT with
> -queued,-fixes and -nightly kernel. I can't find out a good commit.
> 
> output:
> Using monotonic timestamps
> Beginning flip-vs-panning-vs-hang-interruptible on crtc 3, connector 10
>   1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
> ...
> flip-vs-panning-vs-hang-interruptible on crtc 3, connector 10: PASSED
> 
> Beginning flip-vs-panning-vs-hang-interruptible on crtc 5, connector 10
>   1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
> ...
> flip-vs-panning-vs-hang-interruptible on crtc 5, connector 10: PASSED
> 
> Beginning flip-vs-panning-vs-hang-interruptible on crtc 7, connector 10
>   1920x1080 60 1920 1966 1996 2080 1080 1082 1086 1112 0xa 0x48 138780
> ...
> flip-vs-panning-vs-hang-interruptible on crtc 7, connector 10: PASSED
> 
> Subtest flip-vs-panning-vs-hang-interruptible: SUCCESS
> 
> Reproduce steps:
> ----------------------------
> 1. ./kms_flip --run-subtest flip-vs-panning-vs-hang-interruptible

Can you please reproduce the bug again and attach the error state?

Whenever you see a dmesg with "[  158.798928] [drm] capturing error event; look
for more information in /sys/class/drm/card0/error", please attach the error
state.

Thanks,
Paulo

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