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[Bryce Harrington <bryce@xxxxxxxxxxxxxxxxxxx>]

** Summary changed:

- Xorg assert failure: *** glibc detected *** /usr/bin/X: realloc(): invalid pointer: 0x096a6dd0 ***
+ Xorg assert failure: /usr/bin/X: realloc(): invalid pointer: 0x096a6dd0

** Description changed:

  Computed crashed after trying to log switch to another user through GDM
+ 
+ Thread 1 (process 7802):
+ #0  0x00cc6422 in __kernel_vsyscall ()
+ No symbol table info available.
+ #1  0x003b1601 in *__GI_raise (sig=6)
+     at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
+ 	resultvar = <value optimized out>
+ 	pid = 5074932
+ 	selftid = 7802
+ #2  0x003b4a62 in *__GI_abort () at abort.c:92
+ 	act = {__sigaction_handler = {
+     sa_handler = 0xb8f4e4 <_rtld_local+1220>, 
+     sa_sigaction = 0xb8f4e4 <_rtld_local+1220>}, sa_mask = {__val = {917504, 
+       136066896, 134582228, 3213672264, 39520, 3213672232, 134544804, 
+       134532708, 1031, 12122360, 4508129, 1031, 136066896, 3213672160, 
+       5074932, 15, 3213673620, 3213672280, 4627156, 2, 3213672160, 4, 0, 
+       3213672256, 3213672268, 2, 4933319, 4933315, 4928865, 4928891, 230, 
+       3213672160}}, sa_flags = -1081295064, sa_restorer = 0x4b5a63}
+ 	sigs = {__val = {32, 0 <repeats 31 times>}}
+ #3  0x003e856d in __libc_message (do_abort=2, 
+     fmt=0x4b78b8 "*** glibc detected *** %s: %s: 0x%s ***\n")
+     at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
+ 	ap = <value optimized out>
+ 	fd = -1081294704
+ 	on_2 = <value optimized out>
+ 	list = <value optimized out>
+ 	nlist = <value optimized out>
+ 	cp = <value optimized out>
+ 	written = false
+ #4  0x003f2611 in malloc_printerr (action=<value optimized out>, 
+     str=0x6 <Address 0x6 out of bounds>, ptr=0x96a6dd0) at malloc.c:6264
+ 	buf = "096a6dd0"
+ 	cp = <value optimized out>
+ #5  0x003f81e8 in *__GI___libc_realloc (oldmem=0x0, bytes=512)
+     at malloc.c:3778
+ 	ar_ptr = <value optimized out>
+ 	nb = 157999728
+ 	newp = <value optimized out>
+ 	oldp = (const mchunkptr) 0x96a6dc8
+ 	oldsize = 0
+ 	__func__ = "__libc_realloc"
+ #6  0x080aa523 in Xrealloc ()
+ 
  
  ProblemType: Crash
  Architecture: i386
  AssertionMessage: *** glibc detected *** /usr/bin/X: realloc(): invalid pointer: 0x096a6dd0 ***
  CurrentDmesg:
-  [   24.780015] eth1: no IPv6 routers present
-  [   35.908042] end_request: I/O error, dev fd0, sector 0
-  [   35.992049] end_request: I/O error, dev fd0, sector 0
+  [   24.780015] eth1: no IPv6 routers present
+  [   35.908042] end_request: I/O error, dev fd0, sector 0
+  [   35.992049] end_request: I/O error, dev fd0, sector 0
  Date: Sat Mar 20 17:34:46 2010
  DistroRelease: Ubuntu 10.04
  DkmsStatus: Error: [Errno 2] Bestand of map bestaat niet
  ExecutablePath: /usr/bin/Xorg
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
  MachineType: HP Pavilion 06 DF168A-ABH T170.
  Package: xserver-xorg-core 2:1.7.5-1ubuntu3
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-16-generic root=UUID=1ed36f90-6dd8-4916-8da8-acd31abccb32 ro quiet splash
  ProcCmdline: /usr/bin/X :1 -br -verbose -auth /var/run/gdm/auth-for-gdm-GncyXg/database -nolisten tcp
  ProcEnviron:
-  LANG=nl_NL.UTF-8
-  PATH=(custom, no user)
+  LANG=nl_NL.UTF-8
+  PATH=(custom, no user)
  ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
  Signal: 6
  SourcePackage: xorg-server
  StacktraceTop:
-  __kernel_vsyscall ()
-  raise () from /lib/tls/i686/cmov/libc.so.6
-  abort () from /lib/tls/i686/cmov/libc.so.6
-  ?? () from /lib/tls/i686/cmov/libc.so.6
-  ?? () from /lib/tls/i686/cmov/libc.so.6
+  __kernel_vsyscall ()
+  raise () from /lib/tls/i686/cmov/libc.so.6
+  abort () from /lib/tls/i686/cmov/libc.so.6
+  ?? () from /lib/tls/i686/cmov/libc.so.6
+  ?? () from /lib/tls/i686/cmov/libc.so.6
  Title: Xorg assert failure: *** glibc detected *** /usr/bin/X: realloc(): invalid pointer: 0x096a6dd0 ***
  Uname: Linux 2.6.32-16-generic i686
  UserGroups:
-  
+ 
  dmi.bios.date: 07/16/2003
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: 3.23
  dmi.board.name: MS-6577
  dmi.board.vendor: MICRO-STAR INTERNATIONAL CO., LTD
  dmi.board.version: 030
  dmi.chassis.type: 3
  dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr3.23:bd07/16/2003:svnHPPavilion06:pnDF168A-ABHT170.:pvr03Y0211RE101XENO4:rvnMICRO-STARINTERNATIONALCO.,LTD:rnMS-6577:rvr030:cvn:ct3:cvr:
  dmi.product.name: DF168A-ABH T170.
  dmi.product.version: 03Y0211RE101XENO4
  dmi.sys.vendor: HP Pavilion 06
  glxinfo: Error: [Errno 2] Bestand of map bestaat niet
  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

** Summary changed:

- Xorg assert failure: /usr/bin/X: realloc(): invalid pointer: 0x096a6dd0
+ [RV250] Xorg assert failure: /usr/bin/X: realloc(): invalid pointer: 0x096a6dd0

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

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

** Summary changed:

- [RV250] Xorg assert failure: /usr/bin/X: realloc(): invalid pointer: 0x096a6dd0
+ [RV250] Xorg assert failure: /usr/bin/X: realloc(): invalid pointer: 0x096a6dd0 after calling xf86Wakeup ()

-- 
[RV250] Xorg assert failure: /usr/bin/X: realloc(): invalid pointer: 0x096a6dd0 after calling xf86Wakeup ()
https://bugs.launchpad.net/bugs/542814
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