[Bug 93649] [radeonsi] Graphics lockup while playing tf2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93649

            Bug ID: 93649
           Summary: [radeonsi] Graphics lockup while playing tf2
           Product: Mesa
           Version: 11.0
          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: matthew at mjdsystems.ca
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 120925
  --> https://bugs.freedesktop.org/attachment.cgi?id=120925&action=edit
Kernel dmesg around the time of the lockup.

After a period of time playing the latest version of TF2, my GPU locks up. 
After the kernel tries to reset, the X becomes stuck and won't work.  The rest
of the system is fine however.  Sometimes, the GPU will reset successfully and
continue working, only to lockup later, eventually freezing X.

Hardware:
GPU: Gigabyte Radeon HD 7970 Ghz edition OC
CPU: AMD Phenom ii X6 1100T
MB: Asus Crosshair IV Formula

Software:
Mesa: 11.1.0
DRM: 2.4.65
LLVM: 3.7.0
X: 1.17.4
DDX: 7.6.1
Kernel: 4.3.3

I have a dmesg with debug turned on and a strace of X from around the time it
crashes (attached).  I reduced the log file to the relevant bits, as they are
quite large.  I'll retry with latest git, see if it helps anywhere.

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