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[Bug nptl/14417] EAGAIN handling in pthread_cond_wait make pulseaudio hang
- From: "law at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: Fri, 03 Aug 2012 22:00:22 +0000
- Subject: [Bug nptl/14417] EAGAIN handling in pthread_cond_wait make pulseaudio hang
- Auto-submitted: auto-generated
- References: <bug-14417-131@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=14417
--- Comment #5 from law at redhat dot com 2012-08-03 22:00:22 UTC ---
pulseaudio is the current best known way to reproduce the problem.
AUDIODRIVER=pulseaudio play -n -c1 synth whitenoise band -n 100 20 \
band -n 50 20 gain +25 fade h 1 864000 1
Fails once or twice every ten attempts within the first few seconds. I was
able to make it fail regularly with a strategic breakpoint in the low level
pthread code after releasing on the locks (details fade, but clearly it depends
on arranging the the kernel to return EAGAIN to the futex call).
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