[Nouveau] [Bug 77946] New: watchdog_overflow_callback hard CPU lockup

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77946

          Priority: medium
            Bug ID: 77946
          Assignee: nouveau at lists.freedesktop.org
           Summary: watchdog_overflow_callback hard CPU lockup
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: redafroman22 at yahoo.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Created attachment 97999
  --> https://bugs.freedesktop.org/attachment.cgi?id=97999&action=edit
dmesg log output

I recently upgrade an Ubuntu 12.04 server OS to Ubuntu 14.04 server, kernel
3.13. My machine began locking up during SSH sessions; sometime it'd unlock and
others I just had to hard reboot the computer. I was able to get a dmesg output
that mentioned nouveau_therm_fan_set quite a bit (forgive me if I'm reading the
dump incorrectly). 

I wasn't having any trouble on 3.2 or 3.8 kernels, and I have done a clean
install of 14.04 server with the same problem.

Output from dmesg of the trace on a clean install is attached.

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