gnome-disk-utility crashed with SIGSEGV in gdu_device_get_object_path()

[Rigved Rakshit]

Description: Ubuntu precise (development branch)
Release: 12.04

unity:
  Installed: 5.0.0-0ubuntu1
  Candidate: 5.0.0-0ubuntu1
  Version table:
 *** 5.0.0-0ubuntu1 0
        500 http://in.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
        100 /var/lib/dpkg/status

Expected Outcome: This crash should not have occurred.

Actual Outcome: This crash occurred when switching between workspaces.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity 5.0.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-8.15-generic 3.2.0
Uname: Linux 3.2.0-8-generic i686
ApportVersion: 1.90-0ubuntu2
Architecture: i386
Date: Mon Jan 16 00:15:12 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111215)
ProcCmdline: compiz
SegvAnalysis:
 Segfault happened at: 0x89518f4 <gdu_device_get_object_path+4>: mov 0xc(%eax),%eax
 PC (0x089518f4) ok
 source "0xc(%eax)" (0x0000000c) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 gdu_device_get_object_path () from /usr/lib/i386-linux-gnu/libgdu.so.0
 gdu_pool_new_for_address () from /usr/lib/i386-linux-gnu/libgdu.so.0
 gdu_pool_new () from /usr/lib/i386-linux-gnu/libgdu.so.0
 unity::launcher::DeviceLauncherIcon::DeviceLauncherIcon(unity::launcher::Launcher*, _GVolume*) () from /usr/lib/compiz/libunityshell.so
 unity::launcher::DeviceLauncherSection::OnVolumeAdded(_GVolumeMonitor*, _GVolume*, unity::launcher::DeviceLauncherSection*) () from /usr/lib/compiz/libunityshell.so
Title: compiz crashed with SIGSEGV in gdu_device_get_object_path()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 gdu_device_get_object_path (device=0x0) at gdu-device.c:840
 gdu_pool_new_for_address (ssh_user_name=0x0, ssh_address=0x0, error=0xbfe1e45c) at gdu-pool.c:2109
 gdu_pool_new () at gdu-pool.c:1929
 get_device_for_device_file (device_file=<optimized out>) at /build/buildd/unity-5.0.0/plugins/unityshell/src/DeviceLauncherIcon.cpp:505
 unity::launcher::DeviceLauncherIcon::DeviceLauncherIcon (this=0xa961a08, launcher=0x0, volume=0xa8ce1b8) at /build/buildd/unity-5.0.0/plugins/unityshell/src/DeviceLauncherIcon.cpp:50

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jean-Baptiste Lallement (jibel)]

reproduce at the end of a usb-creator run

[Fabio Marconi (fabiomarconi)]

reproduced two times today
in different situations

njin@precious:~$ apt-cache policy unity
unity:
  Installato: 5.4.0-0ubuntu2
  Candidato: 5.4.0-0ubuntu2
  Tabella versione:
 *** 5.4.0-0ubuntu2 0
        500 http://archive.ubuntu.c
---
Ubuntu Bug Squad volunteer triager
http://wiki.ubuntu.com/BugSquad

[Tim Penhey (thumper)]

gdu_pool_new() is the function that is crashing. This is called from unity but isn't part of unity.

I believe it to be part of gnome disk utility.

[C de-Avillez (hggdh2)]

marking triaged/Critical, as it was before.

[Rick Spencer (rick-rickspencer3)]

This looks like it belongs to the desktop team, please reassign as appropriate

[Martin Pitt (pitti)]

Reproducer:

sudo mkdir /tmp/d
while true; do sudo mount -o loop download/ubuntu/precise-desktop-amd64.iso /tmp/d; sudo umount /tmp/d; done

[Martin Pitt (pitti)]

This is a stripped-down version of what unity does:

gcc -o /tmp/gdu_pool_crash gdu_pool_crash.c -Wall -g -O0 `pkg-config --cflags --libs glib-2.0 gio-2.0 gdu` && gdb /tmp/gdu_pool_crash

then run

while true; do sudo mount -o loop download/ubuntu/precise-desktop-amd64.iso /tmp/d; sudo umount /tmp/d; done

this reproduces the crash eventually.