On Sat, Jul 25, 2009 at 12:46:40PM -0400, Will Murnane wrote: > On Sat, Jul 25, 2009 at 03:32, Aurelien Jarno<aurel...@aurel32.net> wrote: > > On Sat, Jul 25, 2009 at 02:11:51AM -0400, Will Murnane wrote: > >> Package: libc6 > >> Version: 2.9-21 > >> Severity: normal > >> > >> I wrote a program that uses pthreads to accomplish work, and hit this bug > >> in it. It works properly on Rhel5, so I'm pretty sure it's libc at fault. > >> > >> Full source code available on request. Basically, though, the problem > >> comes when many threads are fighting for a mutex, and doing very little > >> work between trying to obtain the lock. > >> > > > > If you have a small code to reproduce the problem, it will be highly > > appreciated. > Attached is break_pthreads.cpp. Compile with > g++ -g -Wall -Werror -pipe -O3 -Wno-deprecated break_pthreads.cpp -o > break_pthreads.o -c > g++ -g -pthread break_pthreads.o -o break_pthreads > > Now run it and it crashes: > break_pthreads: pthread_mutex_lock.c:87: __pthread_mutex_lock: > Assertion `mutex->__data.__owner == 0' failed. > Aborted >
This bug is reproducible with glibc 2.9, but fortunately not with glibc 2.10, that should be uploaded in the archive in a few weeks. -- Aurelien Jarno GPG: 1024D/F1BCDB73 aurel...@aurel32.net http://www.aurel32.net -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
