segfault at 48 ip 00007f0248a46840

[Michael Heuberger]

Compiz crashed few times today when I switched to another open Firefox instance.

$ dmesg confirms this:

[81052.782494] compiz[2314]: segfault at 48 ip 00007fa13cc46840 sp 00007fffbce89848 error 4 in libscale.so[7fa13cc35000+27000]
[81121.250177] compiz[5221]: segfault at 48 ip 00007f0248a46840 sp 00007fffc27a46d8 error 4 in libscale.so[7f0248a35000+27000]

Hope you can look into this to make Ubuntu 14 more stable!

[kenjiru (kenjiru)]

It also happened to me a few times today on Ubuntu 15.04

$ dmesg | grep tail

[86208.442767] compiz[23678]: segfault at 48 ip 00007f79453045c0 sp 00007ffeb3f82658 error 4 in libscale.so[7f79452f2000+27000]

[Stephen M. Webb (bregma)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please try to obtain a backtrace following the instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload the backtrace (as an attachment) to the bug report. This will greatly help us in tracking down your problem.

[kenjiru (kenjiru)]

This bug is really simple to reproduce: just click on a window group in the launcher.

Please let me know if you need anything else.

[Jared (jared-h)]

I was having the same issue that Kenjiru described. I was able to fix this issue by using Unity Tweak. In Unity Tweak, I opened the "Windows Spread" tab, and clicked "Restore Defaults". The problem went away after that.

[Launchpad Janitor (janitor)]

[Expired for Compiz because there has been no activity for 60 days.]

[Stephen M. Webb (bregma)]

A stack trace is attached in comment #3

[pirotex (serg-sosnin)]

I have the same problem on Ubuntu 14.04.3 LTS

[100077.222321] compiz[4010]: segfault at 48 ip 00007fb9351f4840 sp 00007ffdfc5a7598 error 4 in libscale.so[7fb9351e3000+27000]
[100077.621243] compiz[5124]: segfault at 8 ip 00007fdead8b2e34 sp 00007ffc4881ab80 error 4 in libstartup-notification-1.so.0.0.0[7fdead8b0000+8000]

The bug occurs when I try to click on a window group in the launcher.

[Aleksandr (aleksandrm8)]

Same bug on Ubuntu 14.04, Compiz 0.9.11.3.

[163251.835954] compiz[29822]: segfault at 48 ip 00007fca05b98840 sp 00007ffc3a30b9f8 error 4 in libscale.so[7fca05b87000+27000]
[29525]: WARNING: Application 'compiz.desktop' killed by signal 11
[29525]: WARNING: App 'compiz.desktop' respawning too quickly

[Matthieu Heitz (heitz-matthieu)]

Same bug on Ubuntu 14.04, Compiz 0.9.11.3

Happened twice in a row.
Compiz crashed, I relogged in my session, restored my firefox session, and compiz crashed again.

From kern.log :
Apr 29 08:48:39 antlers kernel: [ 993.554402] compiz[2292]: segfault at 48 ip 00007f74bddd0840 sp 00007ffc2e5012c8 error 4 in libscale.so[7f74bddbf000+27000]
Apr 29 08:48:42 antlers kernel: [ 996.470153] traps: compiz[4436] trap int3 ip:7f8237c35c13 sp:7fff89c4d910 error:0
Apr 29 08:48:42 antlers kernel: [ 996.692823] wish[4200]: segfault at 8 ip 00007f0bb4d73b7f sp 00007ffefb154458 error 4 in libX11.so.6.3.0[7f0bb4d2b000+130000]
Apr 29 08:49:42 antlers kernel: [ 1056.405580] compiz[5105]: segfault at 48 ip 00007f42bf379840 sp 00007ffff43aa838 error 4 in libscale.so[7f42bf368000+27000]

[Alfonso (alfonso-martone)]

It affects me as well, every time I use Unity's "windows spread".

Ubuntu 16.04 journalctl reports this segfault:

kernel: compiz[3905]: segfault at 48 ip 00007f3d92a0fcf0 sp 00007ffd63f58628 error 4 in libscale.so[7f3d929fd000+25000]

Hardware: intel HD630 graphics and two monitors (a 1920x1080 one on the HDMI port and a 1440x900 one on the VGA port); compiz only segfaults when both are connected.