nautilus crashed with SIGSEGV in g_list_foreach()

[Tom]

Happened after closing multiple (which was unintended and erraneous) instances of LibreOffice Calc.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: nautilus-dropbox 0.7.1-2
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
Uname: Linux 3.2.0-18-generic i686
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
CrashCounter: 1
Date: Mon Mar 12 11:10:25 2012
ExecutablePath: /usr/bin/nautilus
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcCmdline: nautilus --no-desktop /home/username/Documents/Dropbox
SegvAnalysis:
 Segfault happened at: 0x39fe4a <g_list_foreach+26>: mov 0x4(%eax),%esi
 PC (0x0039fe4a) ok
 source "0x4(%eax)" (0xececffef) not located in a known VMA region (needed readable region)!
 destination "%esi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: nautilus-dropbox
StacktraceTop:
 g_list_foreach () from /lib/i386-linux-gnu/libglib-2.0.so.0
 g_list_free_full () from /lib/i386-linux-gnu/libglib-2.0.so.0
 ?? ()
 ?? ()
 ?? ()
Title: nautilus crashed with SIGSEGV in g_list_foreach()
UpgradeStatus: Upgraded to precise on 2012-03-11 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 g_list_foreach (list=0xececffeb, func=0x80660f0 <g_object_unref@plt>, user_data=0x0) at /build/buildd/glib2.0-2.31.20/./glib/glist.c:899
 g_list_free_full (list=0xececffeb, free_func=0x80660f0 <g_object_unref@plt>) at /build/buildd/glib2.0-2.31.20/./glib/glist.c:183
 nautilus_file_invalidate_extension_info_internal (file=0x9911ba8) at nautilus-file.c:7343
 nautilus_file_invalidate_attributes_internal (file=0x9911ba8, file_attributes=NAUTILUS_FILE_ATTRIBUTE_EXTENSION_INFO) at nautilus-file.c:7388
 nautilus_file_invalidate_attributes (file=0x9911ba8, file_attributes=NAUTILUS_FILE_ATTRIBUTE_EXTENSION_INFO) at nautilus-file.c:7455

[Raphaël Hertzog (hertzog)]

What version of libglib2.0-0 do you have?

[Raphaël Hertzog (hertzog)]

I fear it's related to #932627.

[Raphaël Hertzog (hertzog)]

Looking more closely, it's not clear that the bug lies in nautilus-dropbox. It's failing in a function of /usr/lib/libnautilus-extension.so.1 and while trying to free a list that is not under direct control of the extension AFAIK. Marking the bug as incomplete because I have no way to reproduce it.