pulseaudio crashed with SIGSEGV in pa_atomic_load()

[Giovanni Battista Salvietti]

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

[Apport retracing service (apport)]

StacktraceTop:
 pa_atomic_load (a=0x0) at ./pulsecore/atomic.h:57
 pa_asyncmsgq_send (a=0x0, object=object@entry=0x1866910, code=code@entry=12, userdata=userdata@entry=0x18198f0, offset=offset@entry=0, chunk=chunk@entry=0x0) at pulsecore/asyncmsgq.c:143
 pa_sink_input_start_move (i=i@entry=0x18198f0) at pulsecore/sink-input.c:1469
 pa_sink_input_move_to (i=i@entry=0x18198f0, dest=dest@entry=0x1879db0, save=save@entry=false) at pulsecore/sink-input.c:1735
 sink_unlink_hook_callback (sink=0x1866910, c=0x166af70, userdata=<optimized out>) at modules/module-rescue-streams.c:107

[Launchpad Janitor (janitor)]

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

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 12.10 (quantal) reached end-of-life on May 16, 2014.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test.

[Launchpad Janitor (janitor)]

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.]