mythfilldatabase crashed with SIGSEGV in MythContext::ClearSettingsCache() - mythfilldatabase assert failure: *** glibc detected *** /usr/bin/mythfilldatabase: corrupted double-linked list: 0x085b28a0 ***

[BCboy]

Binary package hint: mythtv

mythfilldatabase must have been updating in the background.

ProblemType: Crash
Architecture: i386
AssertionMessage: *** glibc detected *** /usr/bin/mythfilldatabase: corrupted double-linked list: 0x085b28a0 ***
CrashCounter: 1
Date: Fri Sep 11 18:48:32 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/mythfilldatabase
NonfreeKernelModules: nvidia
Package: mythtv-backend 0.22.0~trunk21742-0ubuntu2
ProcCmdline: /usr/bin/mythfilldatabase
ProcEnviron: PATH=(custom, no user)
ProcVersionSignature: Ubuntu 2.6.31-10.32-generic
Signal: 6
SourcePackage: mythtv
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
Title: mythfilldatabase assert failure: *** glibc detected *** /usr/bin/mythfilldatabase: corrupted double-linked list: 0x085b28a0 ***
Uname: Linux 2.6.31-10-generic i686
UserGroups: audio cdrom dialout video

[Apport retracing service (apport)]

StacktraceTop:__kernel_vsyscall ()
*__GI_raise (sig=6)
*__GI_abort () at abort.c:92
__libc_message (do_abort=2,
malloc_printerr (action=<value optimized out>,

[MarcRandolph (mrand)]

Howdy, and thank you for helping to improve Mythbuntu by reporting this issue.
This problem has been seen by a few other users, and is still under investigation.

Looks like the assert was likely caused by the same thing as the SIGSEGV in MythDB::ClearSettingsCache reports:

#14 0x003e27c9 in MythDB::ClearSettingsCache ()
   from /usr/lib/libmythdb-0.22.so.0
No symbol table info available.

[MarcRandolph (mrand)]

One suggestion I found via google:

"Chances are very good that it is a pointer problem. valgrind is particularly
good at tracking down pointer problems, so I suggest you take a look at that"

[MarcRandolph (mrand)]

Howdy, and thank you for helping to improve Mythbuntu by opening this ticket. Unfortunately, this backtrace attached is not useful to the developers. Could both of you please open new tickets after following the "basic backtrace" directions outlined here:

http://www.mythtv.org/wiki/Debugging#Debugging_with_Ubuntu_packages

The above process will result in new tickets being opened, so I'm going to close this one. Please ignore the "Invalid" wording - that is simply unfortunate wording.