[apport] xchat-gnome crashed with SIGSEGV in g_closure_invoke()

[Peter Berry]

Binary package hint: xchat-gnome

Happened while using the network selection dialogue. Started searching, it reached Freenode, I pressed enter, crash.

ProblemType: Crash
Architecture: amd64
Date: Tue Apr 3 01:32:44 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/xchat-gnome
Package: xchat-gnome 1:0.16-0ubuntu3
PackageArchitecture: amd64
ProcCmdline: xchat-gnome
ProcCwd: /home/pwb
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: xchat-gnome
StacktraceTop:
 ?? ()
 g_closure_invoke ()
 ?? () from /usr/lib/libgobject-2.0.so.0
 g_signal_emit_valist ()
 g_signal_emit () from /usr/lib/libgobject-2.0.so.0
Uname: Linux rhuidean 2.6.20-13-generic #2 SMP Sat Mar 24 23:12:02 UTC 2007 x86_64 GNU/Linux
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev scanner video

[Apport retracing service (apport)]

StacktraceTop:dialog_response (dialog=0xa72030, response=<value optimized out>, data=<value optimized out>) at connect-dialog.c:76
IA__g_closure_invoke (closure=0x8c0da0, return_value=0x0, n_param_values=2, param_values=0x7fff249ec910, invocation_hint=0x7fff249ec7e0)
signal_emit_unlocked_R (node=0x7570e0, detail=0, instance=0xa72030, emission_return=0x0, instance_and_params=0x7fff249ec910) at gsignal.c:2440
IA__g_signal_emit_valist (instance=0xa72030, signal_id=<value optimized out>, detail=0, var_args=0x7fff249ecb90) at gsignal.c:2199
IA__g_signal_emit (instance=0x2b2589ccb960, signal_id=10945616, detail=33) at gsignal.c:2243

[Sebastien Bacher (seb128)]

Thanks for your bug report. The crash looks like a memory corruption. Could you try to get a valgrind log for it (you can follow the instructions from https://wiki.ubuntu.com/Valgrind for that)?

[Peter Berry (pwberry)]

Right, in more detail here's how to reproduce it:

* Running for the first time. IF you've already run it you can reproduce by removing ~/.xchat2 and ~/.gconf/apps/xchat first.
* Dialogue pops up asking you to enter your nick and real name. Do this, and press OK
* Connects automatically to #ubuntu on "Ubuntu Server"
* Close the connection.
* IRC -> Connect..., press Ctrl-F and type "Free", Freenode is highlighted. Press enter.
* Crash.

[Peter Berry (pwberry)]

That valgrind log is for i386 btw, where the original bug report was for a crash on amd64, though it's the same hardware (I reinstalled again today).

[Sebastien Bacher (seb128)]

The log show an error, it has no detail though, could you get a new one with xchat-gnome-dbgsym installed?

[Peter Berry (pwberry)]

I can't seem to get a more useful backtrace than that. Following the instructions at https://wiki.ubuntu.com/DebuggingProgramCrash, I installed xchat-gnome-dbgsym and ran it as before, but it still shows no debug symbols. Doing a dpkg-query -L I found /usr/lib/debug/usr/bin/xchat-gnome, but with that I get the following:

[pwb@rhuidean ~]$ G_SLICE=always-malloc G_DEBUG=gc-friendly valgrind -v --tool=memcheck --leak-check=full --num-callers=40 --log-file=valgrind.log /usr/lib/debug/usr/bin/xchat-gnome
valgrind: m_ume.c: can't open interpreter

[Peter Berry (pwberry)]

Gah! s/backtrace/valgrind log/

[Sebastien Bacher (seb128)]

you have to run the normal xchat-gnome, the /usr/lib/debug version is only debug symbols which are used automatically

[Peter Berry (pwberry)]

Sorry for the delay.

[Peter Berry (pwberry)]

Incidentally I can also make the method to reproduce a bit more straightforward:

1. Make sure one network is set to connect automatically. (Haven't tested with more than one)
2. Start xchat-gnome, let it connect, then close the connection using the context menu on the networks/channels list.
3. Try to connect to a network using IRC -> Connect. Crash.

[Sebastien Bacher (seb128)]

I've opened a bug upstream with those details now: http://bugzilla.gnome.org/show_bug.cgi?id=429920

[Sebastien Bacher (seb128)]

the bug has been fixed upstream now

[Sebastien Bacher (seb128)]

the new version is in gutsy