[Bug 71605] New: 2.99.906 causes XOrg to die quite frequently

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71605

          Priority: medium
            Bug ID: 71605
          Assignee: chris at chris-wilson.co.uk
           Summary: 2.99.906 causes XOrg to die quite frequently
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jaylittle at jaylittle.com
          Hardware: Other
            Status: NEW
           Version: git
         Component: Driver/intel
           Product: xorg

Created attachment 89185
  --> https://bugs.freedesktop.org/attachment.cgi?id=89185&action=edit
DMESG output with extended drm logging turned on

So with the recent release of 2.99.906, I've run into a serious issue.  Namely
XOrg is crashing - alot.  Downgrading to 2.99.904 resolves the issue though I
wasn't having this problem a few weeks ago with an interim build.

The easiest way for me to replicate this is:

[1] Log into GDM
[2] Wait for Cinnamon to start
[3] Click on the Thunderbird icon in my docky dock

Around 50% of the time, this will cause XOrg to die and gdm will restart it. 
If this doesn't cause XOrg to die, goofing around for a few minutes in other
apps will eventually cause it.  In any event when Thunderbird dies this way
it's always in the process of "zooming the window in" from the center of the
screen.

I've attached the relevant XOrg log (though it's pretty useless).  I've also
attached my dmesg dump as I had turned on extended drm logging in preparation
for replicating and opening a bug on the issue this morning.

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