[Bug 108708] mesa 18.1.9 segfault at 68 ip with spectacle via USB-C screen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108708

            Bug ID: 108708
           Summary: mesa 18.1.9 segfault at 68 ip with spectacle via USB-C
                    screen
           Product: Mesa
           Version: 18.1
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: archenroot at gmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

I experience failing Spectacle app with segfault on i965 driver.

STEPS TO REPRODUCE
1. Connect external monitor via USB-C
2. Let spectacle main window be located on either primary or secondary screen
3. Click "Take a New Screenshot"

OBSERVED RESULT
Spectacle just shutdown silently. There is no error visible in Xorg.0.log
neither in messages. But I see in dmesg output:
[ 1256.092610] spectacle[22229]: segfault at 68 ip 00007fc5650e2d1b sp
00007ffe65f637c0 error 4 in i965_dri.so[7fc564cd2000+7ef000]

SOFTWARE VERSIONS
(available in About System)
KDE Plasma Version: 5.13.5 (-r3 but I think it is internal Gentoo patch
release)
KDE Frameworks Version: 5.50.0
Qt Version: 5.11.1

I plan to upgrade to latest Mesa although marked as UNSTABLE in Gentoo tree.

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