[Bug 1539209] [NEW] pulseaudio crashed with SIGABRT in pa_alsa_path_set_volume() from source_set_volume_cb() from pa_source_process_msg()

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Daniel van Vugt (vanvugt):

https://errors.ubuntu.com/problem/49276ec9f717c5268dfc99940a28fb4a56fe1b4a

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[Impact]
pulseaudio daemon crashes, interrupting sound output/input.

[Test Case]
Theoretical test case (crash does not happen for all users):
1. Find some headphones and/or microphone. Ensure you do not wear the
   headphones during the test as it may be loud.
2. Set audio output/input volumes to maximum.
3. Unplug and replug the headphones/microphone.
4. Check that that pulseaudio process is still running, with a start time
   older than when you began this test case.

[Regression Potential]
Low. This SRU affects the pulseaudio daemon only so the worst case would be loss of sound output/input. The same patches have been released to
17.10 for a month already and zero regressions of the crashes have
occurred worldwide since then.

[Original Description]

Appears randomly.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: pulseaudio 1:7.1-1ubuntu3
ProcVersionSignature: Ubuntu 4.3.0-7.18-generic 4.3.3
Uname: Linux 4.3.0-7-generic x86_64
ApportVersion: 2.19.4-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/pcmC0D0p:   potato    12883 F...m pulseaudio
 /dev/snd/controlC0:  potato    12883 F.... pulseaudio
 /dev/snd/controlC1:  potato    12883 F.... pulseaudio
CurrentDesktop: Unity
Date: Thu Jan 28 22:16:03 2016
ExecutablePath: /usr/bin/pulseaudio
InstallationDate: Installed on 2016-01-17 (11 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
ProcCmdline: /usr/bin/pulseaudio --start --log-target=syslog
ProcEnviron:
 PATH=(custom, no user)
 SHELL=/bin/bash
 LANG=ru_RU.UTF-8
 LANGUAGE=ru
 XDG_RUNTIME_DIR=<set>
Signal: 6
SourcePackage: pulseaudio
StacktraceTop:
 pa_alsa_path_set_volume () from /usr/lib/pulse-7.1/modules/libalsa-util.so
 ?? () from /usr/lib/pulse-7.1/modules/libalsa-util.so
 pa_source_process_msg () from /usr/lib/libpulsecore-7.1.so
 ?? () from /usr/lib/pulse-7.1/modules/libalsa-util.so
 ?? () from /usr/lib/libpulsecore-7.1.so
Title: pulseaudio crashed with SIGABRT in pa_alsa_path_set_volume()
UpgradeStatus: Upgraded to xenial on 2016-01-28 (0 days ago)
UserGroups: adm audio cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 12/07/2009
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.11
dmi.board.name: JV71TR
dmi.board.vendor: Acer
dmi.board.version: Rev
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: None
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.11:bd12/07/2009:svnAcer:pnAspire7540:pvr0100:rvnAcer:rnJV71TR:rvrRev:cvnAcer:ct10:cvrNone:
dmi.product.name: Aspire 7540
dmi.product.version: 0100
dmi.sys.vendor: Acer
modified.conffile..etc.pulse.daemon.conf: [modified]
mtime.conffile..etc.pulse.daemon.conf: 2016-01-25T21:44:07.089113

** Affects: pulseaudio
     Importance: Medium
         Status: Fix Released

** Affects: pulseaudio (Ubuntu)
     Importance: High
     Assignee: Daniel van Vugt (vanvugt)
         Status: Fix Released


** Tags: amd64 apport-crash artful rls-x-incoming xenial yakkety zesty
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pulseaudio crashed with SIGABRT in pa_alsa_path_set_volume() from source_set_volume_cb() from pa_source_process_msg()
https://bugs.launchpad.net/bugs/1539209
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