[Bug 89536] GPU lockup and kernel OOPS when using PRIME

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=89536

            Bug ID: 89536
           Summary: GPU lockup and kernel OOPS when using PRIME
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: rafael.ristovski@gmail.com

Created attachment 114225
  --> https://bugs.freedesktop.org/attachment.cgi?id=114225&action=edit
Two of the kernel hangs, note one is an OOPS, while the other is not, I was
able to shut down the machine normally after the first OOPS as the kernel was
still responsive to power button events.

When running OpenGL applications with PRIME, the screen freezes and a kernel
OOPS is generated. This seems to happen either when the application starts, or
the window of the application is re-drawn (moving workspaces,
minimizing/maximizing) Crashes seem to be inconsistent as sometimes the kernel
just freezes and no OOPS is generated.

OS Details:
Archlinux with kernel 3.19.1-1
xorg-server 1.17.1-3
xf86-video-intel 2.99.917-4
xf86-video-ati 1:7.5.0-2
libdrm 2.4.59-1

Below is an attached kernel log with _TWO_ separate kernel hang, both caused by
running an OpenGL application with PRIME.

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