compiz crashed with SIGSEGV in nux::InputArea::OnEvent()

[William Grant]

In a freshish session I had clicked the Ubuntu button and started typing in the search widget.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: libnux-0.9-0 0.9.28-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
Uname: Linux 2.6.38-5-generic x86_64
Architecture: amd64
CrashCounter: 1
Date: Sun Feb 27 14:44:50 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_AU:en
 LANG=en_AU.utf8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fa06a896950 <_ZN3nux9InputArea7OnEventERNS_5EventEll+2976>: mov 0x10(%rbx),%rdi
 PC (0x7fa06a896950) ok
 source "0x10(%rbx)" (0x00000010) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 nux::InputArea::OnEvent(nux::Event&, long, long) () from /usr/lib/libnux-0.9.so.0
 nux::BaseWindow::ProcessEvent(nux::Event&, long, long) () from /usr/lib/libnux-0.9.so.0
 nux::WindowCompositor::ProcessEvent(nux::Event&) () from /usr/lib/libnux-0.9.so.0
 nux::WindowThread::ExecutionLoop(unsigned int) () from /usr/lib/libnux-0.9.so.0
 nux::nux_event_dispatch(_GSource*, int (*)(void*), void*) () from /usr/lib/libnux-0.9.so.0
Title: compiz crashed with SIGSEGV in nux::InputArea::OnEvent()
UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare
XsessionErrors:
 (nautilus:2147): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
 (<unknown>:2116): dee-CRITICAL **: clone_leader: assertion `dee_model_get_n_rows (DEE_MODEL (self)) == 0' failed
 (<unknown>:2116): dee-WARNING **: Transaction from com.canonical.Unity.ApplicationsPlace.SectionsModel is in the past. Ignoring transaction.
 (nautilus:2147): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed

[Glen Luscombe (glenluscombe)]

Hi William,

Thanks for taking the time to report this bug and make Ubuntu better.

Is the segfault reproducible if you hit the search widget? Or was it a one off?

[deuce (azinas)]

it doesn't always happen, or at least can't find the pattern... has somethng to do with typing a search then clicking somewhere outside the box.

[William Grant (wgrant)]

It's not fully reproducible, but it has happened at least twice.

[Neil J. Patel (njpatel)]

Hey William, I'm pretty sure I've fixed this in the very latest release of Unity and Nux in natty (I ran into lots of these crashes as well). So I'm marking as fix-released, but please re-open if it's still an issue.