[Bug 69330] [SNB] vaapi h.264 encoding causes drm stuck on render ring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69330

--- Comment #16 from trolldev at gmail.com ---
Hi all,

I am having a very similar issue.
My CPU is a haswell 4790K running under a kernel 3.9.14.
I use the latests Intel Media SDK SDK2015ProductionEvaluation16.4.1 and
SDK2015ProductionEvaluation16.4.2.

When I try to do an accelerated encoding with ffmpeg or the provided h264encode
app, the GPU gets stucked.

For the record, these apps use libva, here is the output of the libva init:

libva info: VA-API version 0.35.0
libva info: va_getDriverName() returns 0
libva info: User requested driver 'iHD'
libva info: Trying to open /opt/intel/mediasdk/lib64/iHD_drv_video.so
libva info: Found init function __vaDriverInit_0_32
libva info: va_openDriver() returns 0


I get the following dmesg:

[   85.952746] [drm] stuck on bsd ring
[   85.953293] [drm] GPU HANG: ecode 7:1:0xa8ffdfbe, in ffmpeg [7536], reason:
Ring hung, action: reset
[   85.953294] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[   85.953294] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[   85.953295] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[   85.953295] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[   85.953296] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[   85.960746] drm/i915: Resetting chip after gpu hang

Please find attached the error reports.

I tried to disabled RC6 but it did not help.

Thanks

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