glibc pthread_join freezing on sarge
From: B. Bogart (ben_at_ekran.org)
Date: 08/31/05
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Date: Wed, 31 Aug 2005 08:25:23 -0400 To: debian-user@lists.debian.org
Hello all,
I'm running a stock sarge machine with the 32bit 2.6.8 kernel on a AMD64
3200+ machine. I'm using some unstable and demudi packages.
Problem I'm having is that a few apps (actually almost all my v4l apps)
crash when I try and capture video. Actually there is no fault, but the
software hangs. I traced it down to the use of pthread_join() which is
where the code hangs. (I've been doing a backtrace after manually
killing the application)
I tried upgrading my libc6 to 2.3.2.ds1-22.d still getting the same
crash. Here are a couple examples of traces:
(gdb) bt
#0 0xffffe410 in __kernel_vsyscall ()
#1 0x40128f18 in pthread_join () from /lib/tls/i686/cmov/libpthread.so.0
#2 0x44bd97bd in videoV4L::stopTransfer () from
/usr/lib/pd/extra/Gem.pd_linux
#3 0x44bd504c in pix_videoNEW::stopRendering ()
from /usr/lib/pd/extra/Gem.pd_linux
#4 0x44b0111e in GemBase::gem_startstopMess ()
from /usr/lib/pd/extra/Gem.pd_linux
#5 0x44b01382 in GemBase::gem_MessCallback ()
from /usr/lib/pd/extra/Gem.pd_linux
#6 0x0809ba47 in pd_typedmess ()
#7 0x00000000 in ?? ()
(gdb) bt
#0 0xffffe410 in __kernel_vsyscall ()
#1 0x40128f18 in pthread_join () from /lib/tls/i686/cmov/libpthread.so.0
#2 0x42a86440 in pdp_sdl_setup () from /usr/lib/pd/extra/pdp.pd_linux
So what should I do to try and solve this? What version of libc6 should
I be using? Are there known bugs with my configuration and pthreads?
I'm dependant on getting this machine working, so I hope someone has a
suggestion. I'd be happy to do whatever tests to break the issue down
further.
Thanks all.
B.
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