[Bug 83998] New: Oopses on R9270X using UVD since radeon/uvd: use PIPE_USAGE_STAGING for msg&fb buffers - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 83998] New: Oopses on R9270X using UVD since radeon/uvd: use PIPE_USAGE_STAGING for msg&fb buffers
Date: Wed, 17 Sep 2014 14:14:07 +0000	[thread overview]
Message-ID: <bug-83998-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=83998

          Priority: medium
            Bug ID: 83998
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Oopses on R9270X using UVD since radeon/uvd: use
                    PIPE_USAGE_STAGING for msg&fb buffers
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: adf.lists@gmail.com
          Hardware: Other
            Status: NEW
           Version: git
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

R9270X Getting rareish Oopses and once oomkiller since -

commit 6327b584155d040ae089e65fd6747186bdd9666b
Author: Christian König <christian.koenig@amd.com>
Date:   Thu Sep 11 09:50:00 2014 +0200

    radeon/uvd: use PIPE_USAGE_STAGING for msg&fb buffers

    That better matches the actual userspace use case, the
    kernel will force it to VRAM if the hardware requires it.

To trigger this I need to repeatedly start mplayer using uvd - it's takes some
time, I ended up making a script to do it for me while AFK.

I am 99% sure the above is it - I spent a day and a half trying on the commit
before (radeon/video: use the hw to initial clear the buffers) with no crash.

The Oopses don't mention radeon or uvd.

They will hit as soon as mplayer launches before it renders anything - screen
locked, no mouse cursor or vt switch but SysRq works, box is still up in some
ways for a while (one time I had music playing for 30s-1min after).

One time oomkiller put on its blindfold and ran around killing :-)

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