From: Ingo Molnar <mingo@elte.hu>
To: Srihari Vijayaraghavan <sriharivijayaraghavan@yahoo.com.au>
Cc: Christoph Lameter <clameter@sgi.com>,
Hugh Dickins <hugh@veritas.com>,
Oliver Xymoron <oxymoron@waste.org>,
Andrew Morton <akpm@linux-foundation.org>,
Jens Axboe <jens.axboe@oracle.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PROBLEM] 2.6.22-rc2 panics on x86-64 with slub
Date: Tue, 22 May 2007 13:20:11 +0200 [thread overview]
Message-ID: <20070522112008.GA16308@elte.hu> (raw)
In-Reply-To: <559665.2852.qm@web52608.mail.re2.yahoo.com>
* Srihari Vijayaraghavan <sriharivijayaraghavan@yahoo.com.au> wrote:
> Compiled slub with SMP & CONFIG_PROVE_LOCKING. No luck. It still hangs
> solid after the second spinlock lockup call trace.
hm. This suggests that the spinlock got corrupted - otherwise lockdep
would have complained about the lockup before the spinlock-debug code
had its chance.
> Surprisingly, with CONFIG_SMP=n, CONFIG_PROVE_LOCKING produces this
> with slub (then hangs solid):
yes - PROVE_LOCKING reactivates spinlocks even on UP. At least this
suggests that you'd have gotten the hang even with maxcpus=1 - i.e. the
spinlock corruption is not caused by some genuine SMP race.
furthermore, PROVE_LOCKING also turns on DEBUG_LOCK_ALLOC, so we now
know that it's most likely not use-after-free type of corruption.
Ingo
next prev parent reply other threads:[~2007-05-22 11:21 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-20 13:35 [PROBLEM] 2.6.22-rc2 panics on x86-64 with slub Srihari Vijayaraghavan
2007-05-21 16:30 ` Christoph Lameter
2007-05-21 17:41 ` Hugh Dickins
2007-05-21 18:25 ` Christoph Lameter
2007-05-21 18:44 ` Hugh Dickins
2007-05-21 18:48 ` Christoph Lameter
2007-05-21 19:00 ` Jens Axboe
2007-05-21 19:06 ` Hugh Dickins
2007-05-21 19:09 ` Jens Axboe
2007-05-21 19:13 ` Christoph Lameter
2007-05-21 19:26 ` Jens Axboe
2007-05-21 19:29 ` Hugh Dickins
2007-05-21 19:34 ` Christoph Lameter
2007-05-21 22:27 ` Christoph Lameter
2007-05-21 23:46 ` Christoph Lameter
2007-05-22 7:07 ` Jens Axboe
2007-05-22 8:26 ` Srihari Vijayaraghavan
2007-05-22 9:24 ` Ingo Molnar
2007-05-22 11:01 ` Srihari Vijayaraghavan
2007-05-22 11:20 ` Ingo Molnar [this message]
2007-05-22 11:26 ` Srihari Vijayaraghavan
2007-05-22 13:01 ` Hugh Dickins
2007-05-22 15:36 ` Jens Axboe
2007-05-22 18:30 ` Christoph Lameter
2007-05-22 20:10 ` Jens Axboe
2007-05-22 22:15 ` Srihari Vijayaraghavan
2007-05-22 22:25 ` Christoph Lameter
2007-05-23 7:11 ` Jens Axboe
2007-05-23 17:04 ` Christoph Lameter
2007-05-24 7:25 ` Jens Axboe
2007-05-24 16:55 ` Christoph Lameter
2007-05-25 6:12 ` Jens Axboe
2007-05-25 13:40 ` Christoph Lameter
2007-05-25 14:00 ` Jens Axboe
2007-05-26 1:52 ` Christoph Lameter
2007-05-26 2:49 ` Srihari Vijayaraghavan
2007-05-23 10:18 ` Srihari Vijayaraghavan
2007-05-23 17:10 ` Christoph Lameter
2007-05-23 17:19 ` Christoph Lameter
2007-05-23 22:23 ` Srihari Vijayaraghavan
2007-05-23 22:32 ` Christoph Lameter
2007-05-24 13:12 ` Srihari Vijayaraghavan
2007-05-24 16:58 ` Christoph Lameter
2007-05-24 21:30 ` Srihari Vijayaraghavan
2007-05-24 22:19 ` Christoph Lameter
2007-05-24 22:39 ` Srihari Vijayaraghavan
2007-05-21 19:04 ` Hugh Dickins
-- strict thread matches above, loose matches on Subject: below --
2007-05-20 3:09 Srihari Vijayaraghavan
2007-05-20 7:12 ` Christoph Lameter
2007-05-20 7:40 ` Srihari Vijayaraghavan
2007-05-20 13:24 ` Satyam Sharma
2007-05-20 13:37 ` Srihari Vijayaraghavan
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