Bug 831375

Summary:	Loopbacks and/or null audio sinks causes pulseaudio crash after a while.
Product:	[Fedora] Fedora	Reporter:	dhwnoble
Component:	pulseaudio	Assignee:	Lennart Poettering <lpoetter>
Status:	CLOSED WONTFIX	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	17	CC:	brendan.jones.it, lkundrak, lpoetter
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-08-01 03:08:01 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description dhwnoble 2012-06-12 21:55:02 UTC

Description of problem:
Pulseaudio crashes when loopbacks and/or null audio sinks are active.

Version-Release number of selected component (if applicable):
1.1-9.fc17

How reproducible:
Always. But can take a while.

Steps to Reproduce:
1. Use pacmd command to set up a null audio sink and a loopback.
2. Set up so an application (Doesn't matter which) outputs to the null output and set the loopback to loop the null output to the real output.
3. Wait anything from 15 minutes to 2 hours or possibly more.
  
Actual results:
After a period of time pulseaudio crashes.

Expected results:
Pulseaudio doesn't crash.

Additional info:
Here are two extracts from the system log from two of these crashes

pulseaudio[16206]: [pulseaudio] module-loopback.c: Assertion 'pa_thread_mq_get() || !PA_SINK_INPUT_IS_LINKED((u->sink_input)->state)' failed at modules/module-loopback.c:450, function sink_input_process_msg_cb(). Aborting.

pulseaudio[1428]: [null-sink] memblock.c: Assertion 'pa_atomic_load(&(b)->_ref) > 0' failed at pulsecore/memblock.c:478, function pa_memblock_get_length(). Aborting.

Comment 1 Fedora End Of Life 2013-07-03 23:57:49 UTC

This message is a reminder that Fedora 17 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 17. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '17'.

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Comment 2 Fedora End Of Life 2013-08-01 03:08:05 UTC

Fedora 17 changed to end-of-life (EOL) status on 2013-07-30. Fedora 17 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.