polkit-gnome-authentication-agent-1 crashed with SIGSEGV in g_data_set_internal()

Binary package hint: policykit-1-gnome

I believe this bug is a duplicate of Bug 694032. However, I am filing a new bug report, because my stack trace looks better (though not perfect).

Shortly after booting Natty i386 and starting an Ubuntu Classic Desktop session, I updated the system (with 'sudo apt-get update' and 'sudo apt-get upgrade' from the GNOME Terminal). Shortly after that, the Apport icon appeared on the GNOME Panel. I clicked it, and this bug report came up, indicating that polkit-gnome-authentication-agent-1 crashed with SIGSEGV in g_data_set_internal(). I don't know what caused the bug. Nothing I tried to do seems to have failed.

This bug might be related to Bug 685168, which I have been experiencing from time to time lately on this machine (as duplicate bug 692397). When I saw the Apport icon, I had assumed it was that bug again. However, in that bug, the segfault was in g_datalist_id_set_data_full() rather than g_data_set_internal() as is the case here.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: policykit-1-gnome 0.99-1ubuntu3
ProcVersionSignature: Ubuntu 2.6.37-11.25-generic 2.6.37-rc7
Uname: Linux 2.6.37-11-generic i686
Architecture: i386
CrashCounter: 1
Date: Tue Dec 28 22:06:55 2010
ExecutablePath: /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101202)
ProcCmdline: /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 LC_MESSAGES=en_US.utf8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x892e57 <g_datalist_id_set_data_full+727>: cmp 0x4(%esi),%edi
 PC (0x00892e57) ok
 source "0x4(%esi)" (0x00000024) not located in a known VMA region (needed readable region)!
 destination "%edi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: policykit-1-gnome
StacktraceTop:
 g_data_set_internal (datalist=0x8c83498, key_id=52, data=0x0, destroy_func=0) at /build/buildd/glib2.0-2.27.5/glib/gdataset.c:325
 g_datalist_id_set_data_full (datalist=0x8c83498, key_id=52, data=0x0, destroy_func=0) at /build/buildd/glib2.0-2.27.5/glib/gdataset.c:598
 g_object_unref (_object=0x8c83490) at /build/buildd/glib2.0-2.27.5/gobject/gobject.c:2703
 ?? ()
 __libc_start_main (main=0x804f320, argc=1, ubp_av=0xbfaf9bd4, init=0x804f7e0, fini=0x804f840, rtld_fini=0xd898f0 <_dl_fini>, stack_end=0xbfaf9bcc) at libc-start.c:226
Title: polkit-gnome-authentication-agent-1 crashed with SIGSEGV in g_data_set_internal()
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