reassign 468793 glibc forcemerge 479952 468793 thanks On Mon, Nov 03, 2008 at 09:59:28AM +0000, Martin Schwidefsky wrote: > On Thu, 2008-10-30 at 14:12 +0100, Pierre Habouzit wrote: > > On Thu, Oct 30, 2008 at 12:44:35PM +0000, Martin Schwidefsky wrote: > > > On Mon, 2008-10-27 at 19:59 +0100, Julien Danjou wrote: > > > > At 1225129482 time_t, Moritz Muehlenhoff wrote: > > > > > Maybe we could forward this bug to Martin Schwidefsky <schwidefsky@de.ibm.com>, > > > > > who is the glibc s390 maintainer and who works for IBM on the s390 Linux port. > > > > > > > > Why not. > > > > > > > > Martin, do you have any clue about bug #479952? > > > > > > > > http://bugs.debian.org/479952 > > > > > > This does look familiar, I've seen this some years ago with broken > > > locking primivites in the nptl lowlevellock implementation. Could you > > > check your copy of glibc to verify if the locking inline assemblies in > > > nptl/sysdeps/unix/sysv/linux/s390/lowlevellock.h all have the "memory" > > > clobber? This has been the bug last time. Just for information I'm > > > currently on travel and will read my mail only randomly. > > > > They all have the memory constraint. > > In the meantime Michael Matz from Novell found the problem: the > __lll_lock Funktion uses atomic_compare_and_exchange_bool_acq which uses > the __arch_compare_and_exchange_val_32_acq function which does NOT have > a "memory" clobber. The patch below should fix the problem Wonderful, thanks a lot to him ! -- ·O· Pierre Habouzit ··O madcoder@debian.org OOO http://www.madism.org
Attachment:
pgp_VPmK4q5At.pgp
Description: PGP signature