[Bug 71482] New: crash under LibreOffice impress ...

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71482

          Priority: medium
            Bug ID: 71482
          Assignee: chris at chris-wilson.co.uk
           Summary: crash under LibreOffice impress ...
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: critical
    Classification: Unclassified
                OS: All
          Reporter: michael.meeks at collabora.com
          Hardware: Other
            Status: NEW
           Version: 7.6 (2010.12)
         Component: Driver/intel
           Product: xorg

Just using LibreOffice to edit some slides, I got 3x in a row (I now have it
running under gdb) over the course of 30minutes editing some slides. Drat -
I've lost the Xorg.0.log.old as well, but nevertheless this is a pretty
annoying one ... I have an openSUSE 13.1 with
xf86-video-intel-2.99.905-1.1.i586

Program received signal SIGSEGV, Segmentation fault.
#0  sna_do_copy (src=src at entry=0xb751dc0, dst=dst at entry=0xb357808,
gc=gc at entry=0xb34f318, sx=sx at entry=0, sy=sy at entry=0, width=width at entry=300, hei
    bitPlane=bitPlane at entry=0, closure=closure at entry=0x0) at sna_accel.c:6097
#1  0xb6c209f6 in sna_copy_area (src=0xb751dc0, dst=0xb357808, gc=0xb34f318,
src_x=0, src_y=0, width=300, height=213, dst_x=5, dst_y=-115) at sna_
#2  0x0807ab3f in ProcCopyArea (client=0xac8e7e8) at dispatch.c:1626
#3  0x0807ed8d in Dispatch () at dispatch.c:432
#4  0x0806ce2a in main (argc=12, argv=0xbffacf64, envp=0xbffacf98) at
main.c:298

Suggested patch is:

--- xf86-video-intel-2.99.905/src/sna_accel.c
+++ xf86-video-intel-2.99.905/src/sna_accel.c
@@ -6094,7 +6094,7 @@
          region.extents.x1, region.extents.y1,
          region.extents.x2, region.extents.y2));

-    if (!box_intersect(&region.extents, &gc->pCompositeClip->extents)) {
+    if (gc->pCompositeClip && !box_intersect(&region.extents,
&gc->pCompositeClip->extents)) {
         DBG(("%s: dst clipped out\n", __FUNCTION__));
         return NULL;
     }

The gc's pCompositeClip is NULL when using my slide deck under the 'master
view' on this hardware.

HTH !

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