[Bug 29001] New: latest d-r-t has regular X crashes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=29001

           Summary: latest d-r-t has regular X crashes
           Product: DRI
           Version: XOrg CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: aidan at cisco.com


after updating to latest d-r-t, X crashes regularly, often just by starting
firefox and waiting for it to restore all the previous open tabs.

xorg-server 1.8.1.902
git libdrm/mesa/ddx
kde 4.4.5 on rv790.

Backtrace:
[ 33638.299] 0: /usr/bin/X (xorg_backtrace+0x28) [0x4a1358]
[ 33638.299] 1: /usr/bin/X (0x400000+0x636f9) [0x4636f9]
[ 33638.299] 2: /lib/libpthread.so.0 (0x7fc9ad310000+0xf120) [0x7fc9ad31f120]
[ 33638.299] 3: /usr/lib/libpixman-1.so.0 (0x7fc9ac3a6000+0x3ce53)
[0x7fc9ac3e2e53]
[ 33638.299] 4: /usr/lib/libpixman-1.so.0 (0x7fc9ac3a6000+0x31091)
[0x7fc9ac3d7091]
[ 33638.299] 5: /usr/lib/libpixman-1.so.0 (pixman_image_composite32+0xfe3)
[0x7fc9ac3d91c3]
[ 33638.299] 6: /usr/lib64/xorg/modules/libfb.so (fbComposite+0x225)
[0x7fc9a99ad8b5]
[ 33638.299] 7: /usr/lib64/xorg/modules/libexa.so (0x7fc9a9780000+0x10701)
[0x7fc9a9790701]
[ 33638.299] 8: /usr/lib64/xorg/modules/libexa.so (0x7fc9a9780000+0xe15e)
[0x7fc9a978e15e]
[ 33638.299] 9: /usr/bin/X (0x400000+0xd4b80) [0x4d4b80]
[ 33638.299] 10: /usr/bin/X (0x400000+0xce2ad) [0x4ce2ad]
[ 33638.300] 11: /usr/bin/X (0x400000+0x2f5ec) [0x42f5ec]
[ 33638.300] 12: /usr/bin/X (0x400000+0x24de5) [0x424de5]
[ 33638.300] 13: /lib/libc.so.6 (__libc_start_main+0xfd) [0x7fc9ab9dbbbd]
[ 33638.300] 14: /usr/bin/X (0x400000+0x24999) [0x424999]
[ 33638.300] Bus error at address 0x7fc99fb86b04
[ 33638.300] 
Fatal server error:
[ 33638.300] Caught signal 7 (Bus error). Server aborting
[ 33638.300] 
[ 33638.300]

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