lightdm crashed with SIGSEGV in _int_realloc()

[LGB [Gábor Lénárt]]

I got this problem after reboot. First I got the login screen but now place to type my password (the shaded area had not got an input field). I also tried the lightdm service to stop and start, but stop reported unknown instance. I had to kill process X "by hand" to recover.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: lightdm 1.5.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-15.25-generic 3.8.4
Uname: Linux 3.8.0-15-generic i686
ApportVersion: 2.9.2-0ubuntu5
Architecture: i386
Date: Thu Mar 28 09:30:32 2013
ExecutablePath: /usr/sbin/lightdm
InstallationDate: Installed on 2012-03-01 (391 days ago)
InstallationMedia: Ubuntu-Server 10.04.1 LTS "Lucid Lynx" - Release i386 (20100816.2)
LightdmConfig:
 [SeatDefaults]
 greeter-session=unity-greeter
 user-session=ubuntu
MarkForUpload: True
ProcCmdline: lightdm
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
SegvAnalysis:
 Segfault happened at: 0xb720d0ce <_int_realloc+14>: call 0xb72c15e3 <__x86.get_pc_thunk.bx>
 PC (0xb720d0ce) ok
 source "0xb72c15e3" (0xb72c15e3) ok
 destination "(%esp)" (0xbf4d4ff0) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: lightdm
StacktraceTop:
 _int_realloc (av=av@entry=0xb7343440 <main_arena>, oldp=oldp@entry=0x97df3d0, oldsize=oldsize@entry=24, nb=nb@entry=16) at malloc.c:4124
 __GI___libc_realloc (oldmem=0x97df3d8, bytes=8) at malloc.c:2984
 ?? () from /lib/i386-linux-gnu/libgcrypt.so.11
 ?? () from /lib/i386-linux-gnu/libgcrypt.so.11
 gcry_realloc () from /lib/i386-linux-gnu/libgcrypt.so.11
Title: lightdm crashed with SIGSEGV in _int_realloc()
UpgradeStatus: Upgraded to raring on 2013-03-05 (22 days ago)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 _int_realloc (av=av@entry=0xb7343440 <main_arena>, oldp=oldp@entry=0x97df3d0, oldsize=oldsize@entry=24, nb=nb@entry=16) at malloc.c:4124
 __GI___libc_realloc (oldmem=oldmem@entry=0x97df3d8, bytes=bytes@entry=8) at malloc.c:2984
 _gcry_private_realloc (a=0x97df3d8, n=8) at stdmem.c:191
 _gcry_realloc (a=a@entry=0x97df3d8, n=n@entry=8) at global.c:847
 gcry_realloc (a=0x97df3d8, n=8) at visibility.c:1391

[Robert Ancell (robert-ancell)]

Closing assumed fixed.