From: Dave C Boutcher <sleddog@us.ibm.com>
To: Michael Ellerman <michael@ellerman.id.au>
Cc: Ingo Molnar <mingo@elte.hu>, "Serge E. Hallyn" <serue@us.ibm.com>,
Andrew Morton <akpm@osdl.org>,
linuxppc64-dev@ozlabs.org, paulus@au1.ibm.com, anton@au1.ibm.com,
linux-kernel@vger.kernel.org
Subject: Re: 2.6.15-mm4 failure on power5
Date: Tue, 17 Jan 2006 21:32:39 -0600 [thread overview]
Message-ID: <20060118033239.GA621@cs.umn.edu> (raw)
In-Reply-To: <200601181119.39872.michael@ellerman.id.au>
On Wed, Jan 18, 2006 at 11:19:36AM +1100, Michael Ellerman wrote:
> It booted fine _with_ the patch applied, with DEBUG_MUTEXES=y and n.
>
> Boutcher, to be clear, you can't boot with kernel-kernel-cpuc-to-mutexes.patch
> applied and DEBUG_MUTEXES=y ?
>
> But if you revert kernel-kernel-cpuc-to-mutexes.patch it boots ok?
>
> This is looking quite similar to another hang we're seeing on Power4 iSeries
> on mainline git:
> http://ozlabs.org/pipermail/linuxppc64-dev/2006-January/007679.html
Correct...I die in exactly the same place every time with
DEBUG_MUTEXES=Y. I posted a backtrace that points into the _lock_cpu
code, but I haven't really dug into the issue yet. I believe this is
very timing related (Serge was dying slightly differently).
--
Dave Boutcher
next prev parent reply other threads:[~2006-01-18 3:32 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-16 6:35 2.6.15-mm4 failure on power5 Serge E. Hallyn
2006-01-16 7:05 ` Andrew Morton
2006-01-16 13:00 ` Michael Ellerman
2006-01-16 15:37 ` Serge E. Hallyn
2006-01-16 21:52 ` Dave C Boutcher
2006-01-17 1:09 ` Andrew Morton
2006-01-17 8:17 ` Ingo Molnar
2006-01-17 8:47 ` Andrew Morton
2006-01-17 16:52 ` Dave C Boutcher
2006-01-17 16:55 ` Dave C Boutcher
2006-01-18 6:40 ` Nathan Lynch
2006-01-18 7:07 ` Ingo Molnar
2006-01-18 7:53 ` Nathan Lynch
2006-01-18 8:08 ` Nathan Lynch
2006-01-17 12:22 ` Serge E. Hallyn
2006-01-17 13:32 ` Michael Ellerman
2006-01-17 14:00 ` Ingo Molnar
2006-01-18 0:19 ` Michael Ellerman
2006-01-18 3:32 ` Dave C Boutcher [this message]
2006-01-18 6:37 ` Ingo Molnar
2006-01-18 6:53 ` Andrew Morton
2006-01-18 7:04 ` Ingo Molnar
2006-01-18 7:28 ` Nathan Lynch
2006-01-18 7:37 ` Andrew Morton
2006-01-18 8:08 ` Ingo Molnar
2006-01-18 8:24 ` Andrew Morton
2006-01-18 9:02 ` [patch] work around ppc64 bootup bug by making mutex-debugging save/restore irqs Ingo Molnar
2006-01-18 9:18 ` [patch] turn on might_sleep() in early bootup code too Ingo Molnar
2006-01-18 10:35 ` Andrew Morton
2006-01-18 10:43 ` Ingo Molnar
2006-01-18 11:15 ` [patch] make bug messages more consistent Ingo Molnar
2006-01-19 4:39 ` [patch] turn on might_sleep() in early bootup code too Zwane Mwaikambo
2006-01-18 10:46 ` Nick Piggin
2006-01-18 11:07 ` Ingo Molnar
2006-01-18 12:53 ` [patch] add trylock_kernel() Ingo Molnar
2006-01-18 7:38 ` 2.6.15-mm4 failure on power5 Arjan van de Ven
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