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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