ubuntu-x-swat team mailing list archive

[Bryce Harrington <bryce@xxxxxxxxxxxxxxxxxxx>]

Unfortunately the backtrace on this bug is a bit terse but looks like it
is a fault in the Xkb keyboard code.

** Description changed:

  This happened when switching to this computer on a USB KVM switch.
+ 
+ #0  *__GI___libc_free (mem=0x202) at malloc.c:3709
+ 	ar_ptr = <value optimized out>
+ 	p = (mchunkptr) 0x1fa
+ #1  0x080aa301 in Xfree ()
+ No symbol table info available.
+ #2  0x0815ed02 in SrvXkbFreeClientMap ()
+ No symbol table info available.
+ #3  0x0815c80b in SrvXkbFreeKeyboard ()
+ No symbol table info available.
+ #4  0x0814e9cf in XkbFreeInfo ()
+ 
  
  ProblemType: Crash
  Architecture: i386
  CrashCounter: 1
  Date: Mon Jan 18 14:46:23 2010
  DistroRelease: Ubuntu 10.04
  ExecutablePath: /usr/bin/Xorg
  MachineType: Dell Inc. Latitude D620
  Package: xserver-xorg-core 2:1.7.3.902-1ubuntu8
  PccardctlIdent:
-  Socket 0:
-    no product info available
+  Socket 0:
+    no product info available
  PccardctlStatus:
-  Socket 0:
-    no card
+  Socket 0:
+    no card
  ProcAttrCurrent: unconfined (enforce)
  ProcCmdLine: root=/dev/mapper/system-root ro quiet splash
  ProcCmdline: /usr/bin/X :0 -nr -verbose -auth /var/run/gdm/auth-for-gdm-MLIzPl/database -nolisten tcp vt7
  ProcEnviron:
-  LANG=en_US.UTF-8
-  PATH=(custom, no user)
-  LANGUAGE=en_US:en
+  LANG=en_US.UTF-8
+  PATH=(custom, no user)
+  LANGUAGE=en_US:en
  ProcVersionSignature: Ubuntu 2.6.32-10.14-generic
  RelatedPackageVersions:
-  xserver-xorg 1:7.5+1ubuntu1
-  libgl1-mesa-glx 7.7-0ubuntu6
-  libdrm2 2.4.17-0ubuntu1
-  xserver-xorg-video-intel 2:2.9.1-1ubuntu1
-  xserver-xorg-video-ati N/A
+  xserver-xorg 1:7.5+1ubuntu1
+  libgl1-mesa-glx 7.7-0ubuntu6
+  libdrm2 2.4.17-0ubuntu1
+  xserver-xorg-video-intel 2:2.9.1-1ubuntu1
+  xserver-xorg-video-ati N/A
  SegvAnalysis:
-  Segfault happened at: 0x188e81 <free+49>:	mov    0x4(%edx),%eax
-  PC (0x00188e81) ok
-  source "0x4(%edx)" (0x000001fe) not located in a known VMA region (needed readable region)!
-  destination "%eax" ok
+  Segfault happened at: 0x188e81 <free+49>:	mov    0x4(%edx),%eax
+  PC (0x00188e81) ok
+  source "0x4(%edx)" (0x000001fe) not located in a known VMA region (needed readable region)!
+  destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: xorg-server
  StacktraceTop:
-  realloc () from /lib/tls/i686/cmov/libc.so.6
-  Xrealloc ()
-  SrvXkbResizeKeyType ()
-  ?? ()
-  ?? ()
+  realloc () from /lib/tls/i686/cmov/libc.so.6
+  Xrealloc ()
+  SrvXkbResizeKeyType ()
+  ?? ()
+  ?? ()
  Tags: lucid
  Title: Xorg crashed with SIGSEGV in realloc()
  Uname: Linux 2.6.32-10-generic i686
  UserGroups:
-  
+ 
  dmi.bios.date: 05/16/2008
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A10
  dmi.board.name: 0TD761
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA10:bd05/16/2008:svnDellInc.:pnLatitudeD620:pvr:rvnDellInc.:rn0TD761:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Latitude D620
  dmi.sys.vendor: Dell Inc.
  fglrx: Not loaded
  glxinfo: Error: [Errno 2] No such file or directory
  system:
-  distro:             Ubuntu
-  architecture:       i686kernel:             2.6.32-10-generic
+  distro:             Ubuntu
+  architecture:       i686kernel:             2.6.32-10-generic

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

** Summary changed:

- Xorg crashed with SIGSEGV in realloc()
+ Xorg crashed with SIGSEGV in XkbFreeInfo()

-- 
Xorg crashed with SIGSEGV in XkbFreeInfo()
https://bugs.launchpad.net/bugs/509338
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