[Bug 72690] New: TearFree: Xorg SIGABRT caused by Chromium

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72690

          Priority: medium
            Bug ID: 72690
          Assignee: chris at chris-wilson.co.uk
           Summary: TearFree: Xorg SIGABRT caused by Chromium
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: minor
    Classification: Unclassified
                OS: Linux (All)
          Reporter: pmjdebruijn at pcode.nl
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

Created attachment 90744
  --> https://bugs.freedesktop.org/attachment.cgi?id=90744&action=edit
valgrind log of Xorg

When I have TearFree enabled using the intel driver from current git master
(details below) and browse the Internet using Chromium (31) on Xubuntu Saucy,
Xorg SIGABRTs. It seems it's most easily reproducable by visting Flickr using
Chromium and going to the "all resolutions" page, for any particular image. I
usually reproduce using Flickr/Explore/Recent Photos/pick an image/***/View all
sizes.

When TearFree is disabled, it can't seem to reproduce the issue.

Asus Eee PC 1215P
Intel Atom N550
Intel NM10/ICH7
Graphics PCI IDs: 8086:a011/8086:0a12
SNA Initialized with Alviso (gen3) backend

Xubuntu Saucy 13.10 (x86-64)
Linux kernel 3.11.0-14 (based on kernel.org 3.11.7)

I use the intel driver built as a package from git master, on my own PPA (I do 
_not_ patch in Mir support):

https://launchpad.net/~pmjdebruijn/+archive/xserver-xorg-video-intel-testing

Currently reproducable with 2.99.906+git20131212.f350a136

With ickle's assistance I valgrinded X, with the resulting log (attached).

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