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From: Lee Revell <rlrevell@joe-job.com>
To: linux-kernel <linux-kernel@vger.kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>, Andrew Morton <akpm@osdl.org>,
	Chris Morgan <cmorgan@alum.wpi.edu>,
	Paul Davis <paul@linuxaudiosystems.com>
Subject: kernel bug: futex_wait hang
Date: Mon, 21 Mar 2005 22:59:10 -0500	[thread overview]
Message-ID: <1111463950.3058.20.camel@mindpipe> (raw)

Paul Davis and Chris Morgan have been chasing down a problem with
xmms_jack and it really looks like this bug, thought to have been fixed
in 2.6.10, is the culprit.

http://www.uwsg.iu.edu/hypermail/linux/kernel/0409.0/2044.html

(for more info google "futex_wait 2.6 hang")

It's simple to reproduce.  Run JACK and launch xmms with the JACK output
plugin.  Close XMMS.  The xmms process hangs.  Strace looks like this:

rlrevell@krustophenia:~$ strace -p 7935
Process 7935 attached - interrupt to quit
futex(0xb5341bf8, FUTEX_WAIT, 7939, NULL

Just like in the above bug report, if xmms is run with
LD_ASSUME_KERNEL=2.4.19, it works perfectly.

I have reproduced the bug with 2.6.12-rc1.

Lee


             reply	other threads:[~2005-03-22  4:01 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-03-22  3:59 Lee Revell [this message]
2005-03-22  4:20 ` kernel bug: futex_wait hang Andrew Morton
2005-03-22  4:25   ` Lee Revell
2005-03-22  4:46     ` Jamie Lokier
2005-03-22  4:48   ` Jamie Lokier
2005-03-22  5:08     ` Andrew Morton
2005-03-22  5:30       ` Lee Revell
2005-03-22  6:34         ` Jakub Jelinek
2005-03-22 23:58           ` Lee Revell
2005-03-23 13:12             ` paul
2005-03-23 13:43               ` Jakub Jelinek
2005-03-22  5:15     ` Lee Revell
2005-03-22 15:30       ` Jamie Lokier
2005-03-22 23:18         ` Lee Revell

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