[Bug 86357] [RadeonSI] GPU lockup with mesa 10.3.3 / kernel 3.17.2

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=86357

            Bug ID: 86357
           Summary: [RadeonSI] GPU lockup with mesa 10.3.3 / kernel 3.17.2
           Product: Mesa
           Version: 10.3
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: madcatx@atlas.cz

Created attachment 109569
  --> https://bugs.freedesktop.org/attachment.cgi?id=109569&action=edit
journalctl crash info, contains both dmesg and Xorg logs

After a recent update of my Fedora 21 box I've experienced this crash twice.
The entire desktop except for mouse freezes and I cannot even VT switch to
console. If the keypress gets registered I end up with a powered down display
and a switch back to X results in a completely corrupted screen. If I don't try
a VT switch I can still move the mouse but other than that the machine appears
dead. It eventually stops responding to ping and the only way out is a hard
reboot.

I have been using this machine for quite a while and I haven't experienced this
before until yesterday. I checked the yum logs but there doesn't seem to be
anything directly related to the graphics except maybe for this:

Updated     xkeyboard-config-2.13-2.fc21.noarch                     
@updates-testing
    Update                       2.13-3.fc21.noarch                     
@updates-testing
    Updated     xorg-x11-font-utils-1:7.5-23.fc21.x86_64                
@updates-testing
    Update                          1:7.5-25.fc21.x86_64                
@updates-testing
    Updated     xorg-x11-fonts-Type1-7.5-11.fc21.noarch                 
@updates-testing
    Update                           7.5-14.fc21.noarch                 
@updates-testing
    Updated     xorg-x11-server-utils-7.7-9.fc21.x86_64                 
@updates-testing
    Update                            7.7-10.fc21.x86_64                
@updates-testing
    Updated     xorg-x11-xkb-utils-7.7-10.fc21.x86_64                   
@fedora


Relevant packages installed:

xorg-x11-drv-ati - 7.5.0-1.fc21
xorg-x11-server-Xorg.x86_64 - 1.16.1-1.fc21
kernel.x86_64 - 3.17.2-300.fc21
Custom-built mesa 10.3.3 with "Fix v5" from "BUG 60879" applied

My card is a 7730 LE, PID:VID 1002:aab0

X and kernel apparently caught and logged the problem, relevant journalctl
output is attached. It usually takes a few hours for this to happen, the only
thing the two crashes I've had so far have in common is a Flash video playing
in the background when the system froze.

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