Red Hat Bugzilla – Bug 831375
Loopbacks and/or null audio sinks causes pulseaudio crash after a while.
Last modified: 2013-07-31 23:08:05 EDT
Description of problem:
Pulseaudio crashes when loopbacks and/or null audio sinks are active.
Version-Release number of selected component (if applicable):
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.
After a period of time pulseaudio crashes.
Pulseaudio doesn't crash.
Here are two extracts from the system log from two of these crashes
pulseaudio: [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: [null-sink] memblock.c: Assertion 'pa_atomic_load(&(b)->_ref) > 0' failed at pulsecore/memblock.c:478, function pa_memblock_get_length(). Aborting.
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