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https://bugs.launchpad.net/bugs/1074903

Title:
  pulseaudio crashed with SIGSEGV in pa_atomic_load()

Status in “pulseaudio” package in Ubuntu:
  Confirmed

Bug description:
  I was setting the microphone volume during an empathy google video
  chat

  ProblemType: Crash
  DistroRelease: Ubuntu 12.10
  Package: pulseaudio 1:2.1-0ubuntu4
  ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  ApportVersion: 2.6.1-0ubuntu6
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  umibozu   26747 F.... pulseaudio
   /dev/snd/controlC0:  umibozu   26747 F.... pulseaudio
   /dev/snd/pcmC0D1c:   umibozu   26747 F...m pulseaudio
  Date: Sun Nov  4 16:43:26 2012
  ExecutablePath: /usr/bin/pulseaudio
  MarkForUpload: True
  ProcCmdline: /usr/bin/pulseaudio --start --log-target=syslog
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7fd11823c64b <pa_asyncmsgq_send+11>: mov    
(%rdi),%eax
   PC (0x7fd11823c64b) ok
   source "(%rdi)" (0x00000000) not located in a known VMA region (needed 
readable region)!
   destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: pulseaudio
  StacktraceTop:
   pa_asyncmsgq_send () from /usr/lib/libpulsecore-2.1.so
   pa_sink_input_start_move () from /usr/lib/libpulsecore-2.1.so
   pa_sink_input_move_to () from /usr/lib/libpulsecore-2.1.so
   ?? () from /usr/lib/pulse-2.1/modules/module-rescue-streams.so
   pa_hook_fire () from /usr/lib/libpulsecore-2.1.so
  Title: pulseaudio crashed with SIGSEGV in pa_asyncmsgq_send()
  UpgradeStatus: Upgraded to quantal on 2012-10-09 (25 days ago)
  UserGroups: adm admin audio cdrom debian-tor dialout dip disk fax floppy fuse 
lpadmin netdev plugdev scanner src tape users vboxusers video
  dmi.bios.date: 08/19/2008
  dmi.bios.vendor: Phoenix Technologies, LTD
  dmi.bios.version: 6.00 PG
  dmi.board.name: FG33
  dmi.board.vendor: Shuttle Inc
  dmi.board.version: V10
  dmi.chassis.type: 3
  dmi.chassis.vendor: Shuttle Inc
  dmi.chassis.version: G5
  dmi.modalias: 
dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd08/19/2008:svnShuttleInc:pnSG33:pvrV10:rvnShuttleInc:rnFG33:rvrV10:cvnShuttleInc:ct3:cvrG5:
  dmi.product.name: SG33
  dmi.product.version: V10
  dmi.sys.vendor: Shuttle Inc

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