[Bug 99158] vdpau segfaults and gpu locks with kodi on R9285

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99158

            Bug ID: 99158
           Summary: vdpau segfaults and gpu locks with kodi on R9285
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: adf.lists at gmail.com
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 128583
  --> https://bugs.freedesktop.org/attachment.cgi?id=128583&action=edit
some segfaults

This is an initial report no bisects as I have no clue when it started yet.

It seems there is an unlucky timing situation with kodi that may segfault
radeonsi or lock gpu playing videos with vdpau h/w decode + temporal vdpau
deint which is default kodi settings.

I can't reproduce with mplayer or mpv.

It seems to need HD interlaced + deint, but that may be just because it changes
timing.

Running with VDPAU_TRACE=1 so far avoids the crash/lock, as does setting cpus
to perf.

Running kodi git, but it's reproducable with 11 month old git as well.

It's easiest to provoke starting kodi with a file on command line, but is
possible starting from running kodi menu - possible improved chance of
crash/lock by moving mouse after clicking file to make overlay instantly render
over video.

Attaching some segfaults and locks.

I am running git mesa/llvm/kernel and the crash is rare enough that I may have
missed it for ages given the amount I test kodi. Additionally the best way to
provoke = repeated command line start, only started being possible again
ecently due to a kodi bug.

The segfaults are a bit random.

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