linux-kernel - Problem with POSIX threads in latest kernel...

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Message-ID: <20070116024710.7e94326c@werewolf-wl>
Date:	Tue, 16 Jan 2007 02:47:10 +0100
From:	"J.A. Magallón" <jamagallon@....com>
To:	"Linux-Kernel, " <linux-kernel@...r.kernel.org>
Subject: Problem with POSIX threads in latest kernel...

Hi...

I run the (almost) latest -mm kernel (2.6.20-rc3-mm1), and see some strange behaviour
with POSIX threads (glibc-2.4).
I have downgraded my test to a simple textboox example for a SMP-safe spool
queue, it's just a circular queue with a mutex and a condition variable for in
and out. I have seen the same structure in several places.

Well, it just sometimes gets blocked. GDB says its stuck in pthread_wait().
I could swear it worked on previous kernels. It works as is on IRIX.
I will try to build an older kernel to test.
I takes a second to block it with something like while :; tst; done.

Any ideas ?

--
J.A. Magallon <jamagallon()ono!com>     \               Software is like sex:
                                         \         It's better when it's free
Mandriva Linux release 2007.1 (Cooker) for i586
Linux 2.6.19-jam04 (gcc 4.1.2 20061110 (prerelease) (4.1.2-0.20061110.2mdv2007.1)) #0 SMP PREEMPT

View attachment "tst.c" of type "text/x-csrc" (1762 bytes)