[Bug 77946] New: watchdog_overflow_callback hard CPU lockup

[Bug 77946] New: watchdog_overflow_callback hard CPU lockup

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

          Priority: medium
            Bug ID: 77946
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
           Summary: watchdog_overflow_callback hard CPU lockup
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: redafroman22-/E1597aS9LQAvxtiuMwx3w@public.gmane.org
          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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[Bug 77946] watchdog_overflow_callback hard CPU lockup

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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

--- Comment #1 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
I believe this should be fixed in commit
61679fe153b2b9ea5b5e2ab93305419e85e99a9d. Can you check 3.15-rc2?

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[Bug 77946] watchdog_overflow_callback hard CPU lockup

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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

--- Comment #2 from brian <redafroman22-/E1597aS9LQAvxtiuMwx3w@public.gmane.org> ---
Thanks, I'll check it out today and post back my results.

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[Bug 77946] watchdog_overflow_callback hard CPU lockup

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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

--- Comment #3 from brian <redafroman22-/E1597aS9LQAvxtiuMwx3w@public.gmane.org> ---
So far so good. I'll let the machine run the rest of the day and mark this
resolved if no more problems show up.

Thanks again.

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[Bug 77946] watchdog_overflow_callback hard CPU lockup

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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

brian <redafroman22-/E1597aS9LQAvxtiuMwx3w@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from brian <redafroman22-/E1597aS9LQAvxtiuMwx3w@public.gmane.org> ---
Upgrading to kernel 3.15-rc2 took care of this issue for me.

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