[Bug 1032925] Re: update-notifier crashed with SIGSEGV in g_object_ref()

[Michael Vogt]

Releated to the "mount-added" call, update-notifier is using a:
    monitor = g_volume_monitor_get();
and connects the mount-added,mount-changed signals to it. Its using it for the entire duration of the daemon
running, so if upgrading gvfs make the monitor somehow invalid that might explain the crash. Another potential
source might be that some plugin is loaded by gvfs after the plugins got upgraded. Not sure if that matters though.

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Title:
  update-notifier crashed with SIGSEGV in g_object_ref()

Status in “update-notifier” package in Ubuntu:
  Confirmed

Bug description:
  update-notifier crashed with SIGSEGV in g_object_ref()

  ProblemType: Crash
  DistroRelease: Ubuntu 12.10
  Package: update-notifier 0.120ubuntu1
  ProcVersionSignature: Ubuntu 3.5.0-7.7-generic 3.5.0
  Uname: Linux 3.5.0-7-generic x86_64
  ApportVersion: 2.4-0ubuntu6
  Architecture: amd64
  Date: Sat Aug  4 07:19:23 2012
  ExecutablePath: /usr/bin/update-notifier
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120724.2)
  ProcCmdline: update-notifier
  ProcEnviron:
   PATH=(custom, no user)
   LANG=hr_HR.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7fe4c9651db1 <g_object_ref+17>:	cmpq   $0x50,(%rax)
   PC (0x7fe4c9651db1) ok
   source "$0x50" ok
   destination "(%rax)" (0x00000001) not located in a known VMA region (needed writable region)!
  SegvReason: writing NULL VMA
  Signal: 11
  SourcePackage: update-notifier
  StacktraceTop:
   g_object_ref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_cclosure_marshal_VOID__OBJECTv () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_signal_emit_by_name () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  Title: update-notifier crashed with SIGSEGV in g_object_ref()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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