[Bug 32706] New: Crash in EVERGREENAppendCopyVertex while scrolling a webpage

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=32706

           Summary: Crash in EVERGREENAppendCopyVertex while scrolling a
                    webpage
           Product: xorg
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: jlp.bugs at gmail.com
         QAContact: xorg-team at lists.x.org


I'm using Konqueror 4.6 RC1 on a laptop with ATI Mobility Radeon HD 5470. If I
visit a webpage
http://www.nokiaphones.net/beginning-nokia-apps-development-using-meego-mobile-qt-and-opensymbian/
and sroll some time on it it crashes whitg this backtrace in gdb:

Program received signal SIGSEGV, Segmentation fault.
0x00007fae15ab54be in EVERGREENAppendCopyVertex (pScrn=<value optimized out>,
srcX=214, srcY=103, dstX=<value optimized out>, dstY=<value optimized out>, 
    w=<value optimized out>, h=5) at evergreen_exa.c:541
541     evergreen_exa.c: No such file or directory.
        in evergreen_exa.c
(gdb) where
#0  0x00007fae15ab54be in EVERGREENAppendCopyVertex (pScrn=<value optimized
out>, srcX=214, srcY=103, dstX=<value optimized out>, 
    dstY=<value optimized out>, w=<value optimized out>, h=5) at
evergreen_exa.c:541
#1  0x00007fae15ab722c in EVERGREENDownloadFromScreen (pSrc=0x1fdbff0, x=214,
y=103, w=5, h=5, dst=0x2141e50 "EIP", dst_pitch=5464) at evergreen_exa.c:1721
#2  0x00007fae153b131f in exaCopyDirty (migrate=<value optimized out>,
pValidDst=0x1fdc088, pValidSrc=0x1fdc098, 
    transfer=0x7fae15ab6e60 <EVERGREENDownloadFromScreen>, fallback_index=1,
sync=0x7fae153afbc0 <exaWaitSync>) at exa_migration_classic.c:220
#3  0x00007fae153b3cb8 in exaPrepareAccessReg_mixed (pPixmap=0x1fdbff0,
index=0, pReg=0x0) at exa_migration_mixed.c:254
#4  0x00007fae153bdd9a in ExaCheckPolyArc (pDrawable=0x1fdbff0, pGC=0x269b930,
narcs=<value optimized out>, pArcs=<value optimized out>)
    at exa_unaccel.c:295
#5  0x00000000004d85a1 in damagePolyArc (pDrawable=0x1fdbff0, pGC=0x269b930,
nArcs=1, pArcs=<value optimized out>) at damage.c:1302
#6  0x000000000042cd6f in ProcPolyArc (client=<value optimized out>) at
dispatch.c:1817
#7  0x0000000000430529 in Dispatch () at dispatch.c:432
#8  0x00000000004249ed in main (argc=10, argv=<value optimized out>,
envp=<value optimized out>) at main.c:291

Before the crash happens I see some rendering glitches on the page, Like text
shown stranegly and black boxes where text should be.
I tried this 3 times and I got the crash in all three cases. I have KDE desktop
effects disabled when this happens.

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