Xorg crashed with SIGSEGV in drmCommandNone()

[PtOLU8zjbZxlgNOiyGyd]

The x server hung up and died after hitting Ctrl-C several times in a gnome-terminal emulator. I was stopping a wodim session before it started accessing the dvdrw drive. Buffer overflow?

Even if this bug happens to be a duplicate I think the backtrace can be somewhat useful.

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/bin/Xorg
Package: xserver-xorg-core 2:1.6.0-0ubuntu7
ProcAttrCurrent: unconfined
ProcCmdline: /usr/X11R6/bin/X :0 -br -audit 0 -auth /var/lib/gdm/:0.Xauth -nolisten tcp vt7
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
ProcVersion: Linux version 2.6.28-11-generic (buildd@palmer) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #38-Ubuntu SMP Fri Mar 27 09:00:52 UTC 2009
Signal: 11
SourcePackage: xorg-server
StacktraceTop:
 ?? ()
 drmCommandNone () from /usr/lib/libdrm.so.2
 ?? () from /usr/lib/xorg/modules/drivers//radeon_drv.so
 ?? () from /usr/lib/xorg/modules/drivers//radeon_drv.so
 exaWaitSync () from /usr/lib/xorg/modules//libexa.so
Title: Xorg crashed with SIGSEGV in drmCommandNone()
Uname: Linux 2.6.28-11-generic i686
UserGroups:

XorgConf:

[Apport retracing service (apport)]

StacktraceTop:SmartScheduleTimer (sig=14) at ../../os/utils.c:1243
<signal handler called>
__kernel_vsyscall ()
ioctl () from /lib/tls/i686/cmov/libc.so.6
drmIoctl () from /usr/lib/libdrm.so.2

[Bryce Harrington (bryce)]

[This is an automatic notification.]

A new version of the -ati driver is now available in Karmic.

This is a significant update to -ati which brings in kernel mode-setting
(currently disabled) and scores of fixes for DRI2, EXA, etc.

I've posted the new version of this driver to the following PPA,
would you mind testing it and seeing if it resolves the bug you
reported?

  https://edge.launchpad.net/~bryceharrington/+archive/ppa/+sourcepub/709908/+listing-archive-extra

If you're not running this release of Ubuntu, you can try booting the Karmic
LiveCD and loading the PPA onto it, and then log out/in to restart X.
ISOs are available at http://cdimages.ubuntu.com/releases/

After testing Karmic, report back here whether it's still an issue or not,
and if it is please post a fresh Xorg.0.log and 'dmesg' output.

Note there could be new bugs... please file these as new reports using
the command 'ubuntu-bug xorg'.

[PtOLU8zjbZxlgNOiyGyd (lkgdx5kefrptmd7ccufa-deactivatedaccount)]

The video system seems to be a lot more stable (and faster!) with this new driver.

[Bryce Harrington (bryce)]

Thanks for the testing Pedro

[Launchpad Janitor (janitor)]

This bug was fixed in the package xserver-xorg-video-ati - 1:6.12.99+git20090825.fc74e119-0ubuntu1

---------------
xserver-xorg-video-ati (1:6.12.99+git20090825.fc74e119-0ubuntu1) karmic; urgency=low

  * Checkout from git 20090825 (master branch) up to commit
    fc74e1194c980d978667e02c60a29a761a694bde
    + Adds DRI2 / redirected direct rendering
      (LP: #96991)
    + Fix freeze on opengl games (bzflag, alienarena) (when KMS on)
      (LP: #348450)
    + Fix intermittent short screen blanking behavior
      (LP: #310864)
    + Fix faulty wine screen updates with EXA Compositing
      (LP: #314205)
    + Fix screen corruption issues when switching windows
      (LP: #406731)
    + Fix SIGSEGV crash in drmCommandNone()
      (LP: #352567)
    + Fix smeared/tearing of display on reboot
      (LP: #367741

  [Tormod Volden]
  * 199_add_git_version_to_log.diff: Log git commit id in RadeonPreInit()
  * sed -i s/DRI2BufferPtr/DRI2Buffer2Ptr/ src/radeon_dri2.c
      so it compiles against xserver 1.6.2.+

  [Bryce Harrington]
  * Restore patch system and quilt to build-depends
  * Drop patches already present upstream
    + 107_check_unsupported_composit_ops.patch
    + 108_quirk_agpmode_m6_ali.patch: AGPMode quirk.
    + 109_quirk_agpmode_m7_intel.patch: AGPMode quirk.
    + 110_quirk_agpmode_r420_sis.patch: AGPMode quirk.
    + 111_use_xaa_for_lowmem_or_nodri.patch

 -- Bryce Harrington <email address hidden> Sat, 29 Aug 2009 12:16:53 -0700