unity-panel-service crashed with SIGSEGV in g_slice_alloc()

[Eric Appleman]

Volume slider causes this

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-services 4.2.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0-3.4-genusername 3.0.0-rc5
Uname: Linux 3.0-3-generic i686
Architecture: i386
CrashCounter: 1
Date: Tue Jul 5 16:12:02 2011
ExecutablePath: /usr/lib/unity/unity-panel-service
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110702)
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/bash
 LC_MESSAGES=en_US.UTF-8
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
SegvAnalysis:
 Segfault happened at: 0xaf66cf <g_slice_alloc+15>: call 0xaab4f7
 PC (0x00af66cf) ok
 source "0xaab4f7" (0x00aab4f7) ok
 destination "(%esp)" (0xbf70afe0) not located in a known VMA region (needed writable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 g_slice_alloc () from /lib/i386-linux-gnu/libglib-2.0.so.0
 g_list_prepend () from /lib/i386-linux-gnu/libglib-2.0.so.0
 gtk_window_list_toplevels () from /usr/lib/libgtk-3.so.0
 ?? () from /usr/lib/libgtk-3.so.0
 gtk_device_grab_remove () from /usr/lib/libgtk-3.so.0
Title: unity-panel-service crashed with SIGSEGV in g_slice_alloc()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Francesco Muriana (f-muriana)]

This bug affects me too

[Apport retracing service (apport)]

StacktraceTop:
 g_slice_alloc (mem_size=12) at /build/buildd/glib2.0-2.29.8/./glib/gslice.c:817
 g_list_prepend (list=0x0, data=0x8d1b8e0) at /build/buildd/glib2.0-2.29.8/./glib/glist.c:309
 gtk_window_list_toplevels () at /build/buildd/gtk+3.0-3.1.6/./gtk/gtkwindow.c:2320
 gtk_grab_notify (group=0xb4c7ac48, device=<value optimized out>, old_grab_widget=0x8bed010, new_grab_widget=0x8a4f410, from_grab=0) at /build/buildd/gtk+3.0-3.1.6/./gtk/gtkmain.c:2161
 gtk_device_grab_remove (widget=0x8bed010, device=0x89e0400) at /build/buildd/gtk+3.0-3.1.6/./gtk/gtkmain.c:2331

[Sebastien Bacher (seb128)]

that's not a design bug

[Harry van Haaren (harryhaaren)]

Any information as to what causes the crash? Do you have to click on the volume slider to make it crash, or how can we reproduce this?

[~`luigi`~ (lgsalvati)]

With updates of the following days problem was solved.

[Michael Flaig (mflaig)]

When going through the indicators unity-panel-service crashes sometimes for me. Isn't solved in my opinion.

Jul 21 00:59:36 grissom kernel: [ 950.340912] unity-panel-ser[3008]: segfault at 7fffe5e5dfc8 ip 00007f4be42db1fa sp 00007fffe5e5dfd0 error 6 in libglib-2.0.so.0.2910.0[7f4be427c000+ec000]

Issue is probably with indicator-sound as I tried to move the volume slider (not working right, closes menu) - clicked on sound again and moved to one of the other menus and unity-panel-service crashed and restarted itself.
ii indicator-sound 0.7.3-0ubuntu1 System sound indicator.
ii indicator-sound-gtk2 0.7.3-0ubuntu1 System sound indicator.

ii unity-services 4.2.0-0ubuntu5 Services for the Unity interface

[Michael Flaig (mflaig)]

Reproduced it exactly as I wrote.

Click on sound indicator, try to move the volume slider, get dropped out of the menu, click on sound indicator again and the UI should freeze afterwards until unity-panel-service restarts. Music kept playing all the time, so only unity/compiz froze.

HTH

[Iain Hamilton (iain-foom)]

Managed to produce the same error but was nothing to do with the sound indicator. It was the clock indicator which triggered it here.

[David Lawson (deej)]

Provoked this trying to access the Pidgin menus.

[Alessandro Losavio (alo21)]

I have still this problem on Ubuntu 11.10 amd64 Beta2

[Dmitry Shachnev (mitya57)]

Does anybody get this on regular (3D) Unity?

[Alessandro Losavio (alo21)]

Me. I have this problem whenever I try to reduce/rice volume and after click on the other part of the panel.

[johan pretorius (johan-pretorius)]

I get the following syslog error whenever I hover over the sound indicator icon in the unity panel (the panel refreshes itself, it's not possible to click on the sound indicator at all):

Oct 17 22:02:46 devbox kernel: [ 619.074290] unity-panel-ser[4573]: segfault at 10 ip b72cdee6 sp bff50fb0 error 4 in libgdk-3.so.0.200.0[b72a4000+76000]

[gtr33m (gtr33m)]

I get the same error, still not fixed. Happens when I click the sound applet to change volume. I don't get to even see the slider before it crashes.

Oct 29 22:39:25 KIDS kernel: [ 3277.552713] unity-panel-ser[4238]: segfault at 1c ip 00007fb82655a235 sp 00007fff0261d9a0 error 4 in libgdk-3.so.0.200.0[7fb82652b000+77000]

[Henk Poley (henkpoley)]

Still seeing the same on a fresh up-to-date oneiric install. By hovering over the volume widger (sound applet):

Dec 31 16:07:05 margrietmyth-desktop kernel: [ 2944.840173] unity-panel-ser[1472]: segfault at 10 ip b7239ee6 sp bff2b8f0 error 4 in libgdk-3.so.0.200.0[b7210000+76000]
Dec 31 16:07:07 margrietmyth-desktop kernel: [ 2946.932139] unity-panel-ser[2043]: segfault at 10 ip b73cfee6 sp bfac9d00 error 4 in libgdk-3.so.0.200.0[b73a6000+76000]
Dec 31 16:07:09 margrietmyth-desktop kernel: [ 2949.326932] unity-panel-ser[2086]: segfault at 10 ip b7296ee6 sp bf88b180 error 4 in libgdk-3.so.0.200.0[b726d000+76000]
Dec 31 16:07:13 margrietmyth-desktop kernel: [ 2952.838129] unity-panel-ser[2135]: segfault at 10 ip b7347ee6 sp bfac3260 error 4 in libgdk-3.so.0.200.0[b731e000+76000]
Dec 31 16:07:20 margrietmyth-desktop kernel: [ 2959.859890] unity-panel-ser[2179]: segfault at 10 ip b72aeee6 sp bf902130 error 4 in libgdk-3.so.0.200.0[b7285000+76000]
Dec 31 16:07:22 margrietmyth-desktop kernel: [ 2962.357575] unity-panel-ser[2232]: segfault at 10 ip b7303ee6 sp bfb3b950 error 4 in libgdk-3.so.0.200.0[b72da000+76000]
Dec 31 16:07:26 margrietmyth-desktop kernel: [ 2966.339295] unity-panel-ser[2276]: segfault at 10 ip b729eee6 sp bfe06df0 error 4 in libgdk-3.so.0.200.0[b7275000+76000]
Dec 31 16:10:04 margrietmyth-desktop kernel: [ 3123.884687] unity-panel-ser[2321]: segfault at 10 ip b733cee6 sp bfa39450 error 4 in libgdk-3.so.0.200.0[b7313000+76000]
Dec 31 16:10:07 margrietmyth-desktop kernel: [ 3126.928675] unity-panel-ser[2431]: segfault at 10 ip b7251ee6 sp bf96be70 error 4 in libgdk-3.so.0.200.0[b7228000+76000]
Dec 31 16:10:10 margrietmyth-desktop kernel: [ 3130.357973] unity-panel-ser[2462]: segfault at 10 ip b7217ee6 sp bfec8820 error 4 in libgdk-3.so.0.200.0[b71ee000+76000]
Dec 31 16:10:12 margrietmyth-desktop kernel: [ 3131.677999] unity-panel-ser[2476]: segfault at 10 ip b731dee6 sp bf98c660 error 4 in libgdk-3.so.0.200.0[b72f4000+76000]
Dec 31 16:10:17 margrietmyth-desktop kernel: [ 3137.230259] unity-panel-ser[2482]: segfault at 10 ip b7339ee6 sp bfb52fc0 error 4 in libgdk-3.so.0.200.0[b7310000+76000]
Dec 31 16:11:42 margrietmyth-desktop kernel: [ 3221.703898] unity-panel-ser[2496]: segfault at 10 ip b721dee6 sp bfbd0370 error 4 in libgdk-3.so.0.200.0[b71f4000+76000]
Dec 31 16:11:43 margrietmyth-desktop kernel: [ 3223.430570] unity-panel-ser[2613]: segfault at 10 ip b728eee6 sp bfbb7040 error 4 in libgdk-3.so.0.200.0[b7265000+76000]
Dec 31 16:11:53 margrietmyth-desktop kernel: [ 3232.942814] unity-panel-ser[2627]: segfault at 10 ip b71eeee6 sp bf825a70 error 4 in libgdk-3.so.0.200.0[b71c5000+76000]
Dec 31 16:11:55 margrietmyth-desktop kernel: [ 3235.431155] unity-panel-ser[2641]: segfault at 10 ip b732aee6 sp bfafa5c0 error 4 in libgdk-3.so.0.200.0[b7301000+76000]
Dec 31 16:13:44 margrietmyth-desktop kernel: [ 35.345619] unity-panel-ser[1547]: segfault at 10 ip b7396ee6 sp bfa180b0 error 4 in libgdk-3.so.0.200.0[b736d000+76000]
Dec 31 16:13:47 margrietmyth-desktop kernel: [ 38.255389] unity-panel-ser[1726]: segfault at 10 ip b73d8ee6 sp bfd40600 error 4 in libgdk-3.so.0.200.0[b73af000+76000]
Dec 31 16:13:49 margrietmyth-desktop kernel: ...