compiz assert failure: *** glibc detected *** compiz: free(): invalid pointer: 0xb6ed0ff4 ***

[Donald Kelloway]

Using Ubuntu oneiric (development branch).

I opened an instance of the terminal. Then opened a second instance of the terminal (I used GNOME-DO to open it). I then had 2 separate terminal windows opened. Then I minimised both of then to the side panel. I then went to the panel and right clicked on the terminal button and selected quit.

Compiz then crashed.

I was able to repeat the procedure, and get compiz to crash again. I have been able to reproduce it 3 times now, all using the procedure as mentioned above. It crashes every time I do it. It may work for other programs as well, have only tried it with the terminal.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity 4.18.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic-pae 3.0.4
Uname: Linux 3.0.0-12-generic-pae i686
ApportVersion: 1.23-0ubuntu1
Architecture: i386
AssertionMessage: *** glibc detected *** compiz: free(): invalid pointer: 0xb6ed0ff4 ***
CrashCounter: 1
Date: Tue Sep 27 11:46:45 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100406.1)
ProcCmdline: compiz
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: unity
StacktraceTop:
 __kernel_vsyscall ()
 raise () from /lib/i386-linux-gnu/libc.so.6
 abort () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /lib/i386-linux-gnu/libc.so.6
Title: compiz assert failure: *** glibc detected *** compiz: free(): invalid pointer: 0xb6ed0ff4 ***
UpgradeStatus: Upgraded to oneiric on 2011-09-24 (3 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Donald Kelloway (theconcession)]

I can also do it if I open the second terminal window by right clicking the terminal icon in the side panel and selecting "New terminal"

Minimizing those two windows also causes the crash.

Once Compiz reboots, both terminal windows are closed.

Same crash happens if I have 3 terminals minimised to the side panel. Crash does not happen if I have only one.

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #750386, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.

[Donald Kelloway (theconcession)]

Same crash occurs if I open, minimise and close 2 windows of gedit.

If I do not minimise the two terminal windows the crash does not occur.

If I minimise only one of the two terminal windows, the crash occurs.

[Donald Kelloway (theconcession)]

Same crash occurs if I open 2 windows of chromium, minimise them, then select quit.

I'm pretty sure my bug is not the same as the one above since mine is easily reproducible, and that one is not.