[Bug 99194] Certain games cause GPU resets

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99194

            Bug ID: 99194
           Summary: Certain games cause GPU resets
           Product: Mesa
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: alex at kobran.org
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 128647
  --> https://bugs.freedesktop.org/attachment.cgi?id=128647&action=edit
dmesg output taken right after the event

Under both 13.0.2 and git versions of mesa, certain games cause complete gpu
lockups which are only sometimes recoverable.

The Non-free (as in beer) game Saints Row IV exhibits this behaviour shortly
into the loading screen. System recovery is only possible within the first few
seconds using the Sysreq key. After about five seconds the system fails to
respond and requires a hardware reset.

The Free (again, as in beer) game Unturned exhibits this behaviour upon loading
up a map (for my purposes I used the PEI map that is the default). System
recovery is typically possible by simply closing the game, but sometimes
requires a VT switch to kill the process.

This behaviour is present both in 13.0.2 and the git version at Dec 16, 2016
16:30:30 MST. This behaviour also appears in at least kernel versions 4.9.0 and
4.8.14

Dmesg output is provided, albiet oddly truncated (That is exactly where dmesg
starts)

The card in question is:

Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cayman/Antilles HDMI Audio
[Radeon HD 6930/6950/6970/6990]

and as such uses the r600 driver.

Running Gentoo ~AMD64, if it helps.

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