Nouveau - Jul 2013 - [Bug 67277] New: Lockdep splat on kernel 3.10.0

https://bugs.freedesktop.org/show_bug.cgi?id=67277

          Priority: medium
            Bug ID: 67277
          Assignee: nouveau at lists.freedesktop.org
           Summary: Lockdep splat on kernel 3.10.0
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: peter at hurleysoftware.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Created attachment 82961
  --> https://bugs.freedesktop.org/attachment.cgi?id=82961&action=edit
lockdep splat in kernel log

On vanilla 3.10 mainline, before the user session loads, I get the attached
lockdep report.

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--- Comment #1 from Peter Hurley <peter at hurleysoftware.com> ---
Created attachment 82962
  --> https://bugs.freedesktop.org/attachment.cgi?id=82962&action=edit
dmesg log

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--- Comment #2 from Peter Hurley <peter at hurleysoftware.com> ---
Created attachment 82963
  --> https://bugs.freedesktop.org/attachment.cgi?id=82963&action=edit
Xorg log

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--- Comment #3 from Salah Coronya <salah.coronya at gmail.com> ---
Created attachment 84371
  --> https://bugs.freedesktop.org/attachment.cgi?id=84371&action=edit
lockep splat 3.11-rc6+

I have the same thing in the current nouveau head (   
3b56bba6abaa70d629fccdcf8490e087ea3a1ab4). Same lock but triggered differently.

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--- Comment #4 from Ilia Mirkin <imirkin at alum.mit.edu> ---
There is a patch available at:

http://lists.freedesktop.org/archives/dri-devel/2013-August/043406.html

Which should fix the issue.

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--- Comment #5 from Emil Velikov <emil.l.velikov at gmail.com> ---
and for prenv50 cards you might also need
http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=3b56bba6abaa70d629fccdcf8490e087ea3a1ab4

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Ilia Mirkin <imirkin at alum.mit.edu> changed:

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

--- Comment #6 from Ilia Mirkin <imirkin at alum.mit.edu> ---
This code has been changed significantly by now, hopefully these issues are
also long gone. Feel free to reopen if it's the same issue; if you're
seeing
different lockdep splats, please open a new issue not to have polluted history.

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