ubuntu-x-swat team mailing list archive

[Bryce Harrington <bryce@xxxxxxxxxxxxxxxxxxx>]

Hmm, in theory apport should be collecting  a backtrace for you but I
gather in this case it is not.  However we need a full backtrace before
analysis can be done.  Please collect a full backtrace -  see
http://wiki.ubuntu.com/X/Backtracing for directions on how to do this
manually with gdb.

** Description changed:

  Binary package hint: xorg
  
  Here is how to reliably and repeatably crash the X server.
  
  1. Update Lucid to the latest version, as of 2009-04-01.  Reboot and log
  into Gnome
  
  2. Open xfig
  
  3. Left click in drawing area once (to dismiss the xfig banner)
  
  4. Press the 'c' key
  
  5. Left click in the drawing area
  
  6. Xserver instantly crashes (and is restarted by display manager).
  
  This process is reliably repeatable, and I have done so several times to
  gather the ltrace and straces attached.
  
  Some more details:
-  * 'c' starts the Circle tool. You can click the circle tool button instead, and have the same result.
-  * The ellipse tool has the same effect. However all other tools within xfig work just fine.
-  * xfig itself doesn't appear to be dying: it is managing to save a "SAVE.fig" file.
-  * How the %(&£"%$ is an application failure able to nuke the Xserver?
+  * 'c' starts the Circle tool. You can click the circle tool button instead, and have the same result.
+  * The ellipse tool has the same effect. However all other tools within xfig work just fine.
+  * xfig itself doesn't appear to be dying: it is managing to save a "SAVE.fig" file.
+  * How the %(&£"%$ is an application failure able to nuke the Xserver?
+ 
+ Backtrace:
+ 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80e937b]
+ 1: /usr/bin/X (0x8048000+0x61c7d) [0x80a9c7d]
+ 2: (vdso) (__kernel_rt_sigreturn+0x0) [0x57e410]
+ 3: /usr/lib/xorg/modules/libfb.so (fbPushFill+0xf9) [0x20b459]
+ 4: /usr/lib/xorg/modules/libfb.so (fbPushImage+0xf2) [0x20b622]
+ 5: /usr/lib/xorg/modules/libfb.so (fbPushPixels+0x78) [0x20b6b8]
+ 6: /usr/bin/X (miPolyArc+0x159a) [0x8199aca]
+ 7: /usr/lib/xorg/modules/libfb.so (fbPolyArc+0x8a) [0x1f90aa]
+ 8: /usr/lib/xorg/modules/libexa.so (0x384000+0xf2dd) [0x3932dd]
+ 9: /usr/bin/X (0x8048000+0xd9655) [0x8121655]
+ 10: /usr/bin/X (0x8048000+0x282f9) [0x80702f9]
+ 11: /usr/bin/X (0x8048000+0x2a477) [0x8072477]
+ 12: /usr/bin/X (0x8048000+0x1ed7a) [0x8066d7a]
+ 13: /lib/tls/i686/cmov/libc.so.6 (__libc_start_main+0xe6) [0x240bd6]
+ 14: /usr/bin/X (0x8048000+0x1e961) [0x8066961]
+ Segmentation fault at address (nil)
+ 
  
  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: xserver-xorg 1:7.5+3ubuntu1
  ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
  Uname: Linux 2.6.32-16-generic i686
  Architecture: i386
  Date: Thu Apr  1 23:14:41 2010
  DkmsStatus: Error: [Errno 2] No such file or directory
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
  MachineType: LENOVO 200793G
  PccardctlIdent:
-  Socket 0:
-    no product info available
+  Socket 0:
+    no product info available
  PccardctlStatus:
-  Socket 0:
-    3.3V 32-bit PC Card
+  Socket 0:
+    3.3V 32-bit PC Card
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-16-generic root=UUID=5dee2242-a2c7-4f67-9ad6-4265f1d22e12 ro quiet splash
  ProcEnviron:
-  PATH=(custom, user)
-  LANG=en_GB.utf8
-  SHELL=/bin/bash
+  PATH=(custom, user)
+  LANG=en_GB.utf8
+  SHELL=/bin/bash
  SourcePackage: xorg
  dmi.bios.date: 08/27/2009
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 79ETE5WW (2.25 )
  dmi.board.name: 200793G
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr79ETE5WW(2.25):bd08/27/2009:svnLENOVO:pn200793G:pvrThinkPadT60p:rvnLENOVO:rn200793G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 200793G
  dmi.product.version: ThinkPad T60p
  dmi.sys.vendor: LENOVO
  system:
-  distro:             Ubuntu
-  codename:           lucid
-  architecture:       i686
-  kernel:             2.6.32-16-generic
+  distro:             Ubuntu
+  codename:           lucid
+  architecture:       i686
+  kernel:             2.6.32-16-generic

** Changed in: xorg-server (Ubuntu)
   Importance: Undecided => High

** Changed in: xorg-server (Ubuntu)
       Status: Confirmed => Incomplete

-- 
xserver crash (repeatable, triggered  by mouse-click)
https://bugs.launchpad.net/bugs/553647
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