[Bug 29583] New: nouveau freeze Xorg on NV34

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

https://bugs.freedesktop.org/show_bug.cgi?id=29583

           Summary: nouveau freeze Xorg on NV34
           Product: xorg
           Version: git
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: drdarkraven-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


The bug was first sighted when resize a 'fake transparent' rxvt window.
This action freeze Xorg.
And with some further investigation, I discovered that the bug is reproducible
by running:
 x11perf -compwinwin500
(And it's fine when running x11perf -putimage500)

And not only Xorg is frozen,it seems the whole system is frozen,too.
The cursor can't be moved,and ssh connection is lost.

I'm using a snapshot kernel,the bug appeared after I updated my kernel tree at
Aug 7.
And there is no such bug in nouveau kernel tree.

Here is my kernel log output.

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