[Bug 104443] i965/brw_bufmgr.c:1104 Segfault when using alt-tab

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104443

            Bug ID: 104443
           Summary: i965/brw_bufmgr.c:1104 Segfault when using alt-tab
           Product: Mesa
           Version: 17.3
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: EoD at xmw.de
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 136480
  --> https://bugs.freedesktop.org/attachment.cgi?id=136480&action=edit
gdb backtrace of the crash

When playing videos with mpv and using Alt+Tab to switch between windows, mpv
crashes regularly with the following segfault: 

> Thread 8 "mpv/vo" received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 0x7fffd9a50700 (LWP 14333)]
> brw_bo_get_tiling (bo=0x55, tiling_mode=0x7fffd9a4f098, swizzle_mode=0x7fffd9a4f09c)
>    at /usr/src/debug/media-libs/mesa-17.3.1/mesa-17.3.1/src/mesa/drivers/dri/i965/brw_bufmgr.c:1104
> 
> 1104	   *tiling_mode = bo->tiling_mode;

This might be a duplicate of bug 104342

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