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Re: [BZ 5240][PATCH] Pthread hang where there are still waiters when mutex is in "unlocked" state.
- From: "Ryan S. Arnold" <rsa at us dot ibm dot com>
- To: libc-alpha at sources dot redhat dot com, Ulrich Drepper <drepper at redhat dot com>
- Cc: Tom Kalla <KALLATOM at de dot ibm dot com>, Andreas Arnez <arnez at vnet dot ibm dot com>
- Date: Fri, 16 Nov 2007 15:52:18 -0600
- Subject: Re: [BZ 5240][PATCH] Pthread hang where there are still waiters when mutex is in "unlocked" state.
- References: <1193942749.6407.115.camel@localhost>
- Reply-to: rsa at us dot ibm dot com
On Thu, 2007-11-01 at 13:45 -0500, Ryan S. Arnold wrote:
> Per the problem description in bugzilla 5240:
>
> "A customer identified a potential race condition in
> nptl/sysdeps/unix/sysv/linux/lowlevellock.c (__lll_timedlock_wait)
> which causes waiting threads not to be woken up under certain circumstances."
>
> http://sources.redhat.com/bugzilla/show_bug.cgi?id=5240
>
Hi Ulrich. I have reopened bugz 5240 because the hang still reproduces
with your recent patch. Any ideas where to go from here?
Ryan S. Arnold
IBM Linux Technology Center
Linux Toolchain Development