[Bug 21447] New: SEGV in xserver-xorg-video-radeon (backtrace and working repro steps included)

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=21447

           Summary: SEGV in xserver-xorg-video-radeon (backtrace and working
                    repro steps included)
           Product: xorg
           Version: 7.4
          Platform: Other
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: high
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: mnemo at minimum.se
         QAContact: xorg-team at lists.x.org


1. boot ubuntu jaunty final version on one of the affected systems
2. run "sudo apt-get install compizconfig-settings-manager"
3. launch the settings manager from system::preferences and activate the ring
switcher plugin
4. hold down SUPER+TAB so that the ring spins around full speed
5. xorg SEGV after like 2-3 seconds

Affected cards include:

01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV380 [Radeon
X600 (PCIE)] [1002:5b62]

and also:

01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV350 AP [Radeon
9600] [1002:4150]


Probably tons of other ATI cards are affected.

Complete logs including dmesg, lspci, xorg.log and whatnot for this crash on
these two systems are available in the downstream bug report here:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/368049

Backtrace from xorg.log.old was:
0: /usr/X11R6/bin/X(xorg_backtrace+0x3b) [0x813518b]
1: /usr/X11R6/bin/X(xf86SigHandler+0x55) [0x80c7be5]
2: [0xb7f6f400]
3: /usr/lib/dri/r300_dri.so(_mesa_update_state_locked+0x832) [0xad3fa152]
4: /usr/lib/dri/r300_dri.so(_mesa_update_state+0x2a) [0xad3fa28a]
5: /usr/lib/dri/r300_dri.so(_mesa_GetIntegerv+0x278) [0xad4cc0c8]
6: /usr/lib/xorg/modules/extensions//libglx.so [0xb78f6132]
7: /usr/lib/xorg/modules/extensions//libglx.so [0xb78e82e8]
8: /usr/lib/xorg/modules/extensions//libglx.so [0xb78e71a7]
9: /usr/lib/xorg/modules/extensions//libglx.so [0xb78ebd6a]
10: /usr/X11R6/bin/X(Dispatch+0x33f) [0x808d57f]
11: /usr/X11R6/bin/X(main+0x3bd) [0x80722ed]
12: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb7b39775]
13: /usr/X11R6/bin/X [0x80717a1]


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