linux-kernel - Re: [Bugme-new] [Bug 10586] New: High Number of Segfaults onMacBookStarting With 2.6.24.5 Kernel

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Message-Id: <20080501192838.8ecb81c2.akpm@linux-foundation.org>
Date:	Thu, 1 May 2008 19:28:38 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Phil Oester <kernel@...uxace.com>
Cc:	Ryan Roth <ryanroth@...global.net>, Ryan.Roth@...M.com,
	bugme-daemon@...zilla.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Bugme-new] [Bug 10586] New: High Number of Segfaults
 onMacBookStarting With 2.6.24.5 Kernel

On Thu, 1 May 2008 19:08:15 -0700 Phil Oester <kernel@...uxace.com> wrote:

> FWIW, I recently upgraded some boxes to 2.6.24.x, and started seeing tons of
> qmail segfaults, which look remarkably similar to the above problem.  2.6.21
> did not exhibit this issue.
> 
> May  1 22:06:03 mail80 kernel: qmail-smtpd[5319]: segfault at 0 ip 4884b473 sp fffeec1c error 4 in libc-2.6.so[487dd000+14e000]
> May  1 22:06:03 mail80 kernel: qmail-smtpd[5491]: segfault at 0 ip 4884b473 sp ffb7179c error 4 in libc-2.6.so[487dd000+14e000]
> May  1 22:06:03 mail80 kernel: qmail-smtpd[4669]: segfault at 0 ip 4884b473 sp fff3135c error 4 in libc-2.6.so[487dd000+14e000]
> May  1 22:06:05 mail80 kernel: qmail-smtpd[5906]: segfault at 0 ip 4884b473 sp ffe1b24c error 4 in libc-2.6.so[487dd000+14e000]
> May  1 22:06:07 mail80 kernel: qmail-smtpd[5898]: segfault at 0 ip 4884b473 sp ffe4e27c error 4 in libc-2.6.so[487dd000+14e000]
> May  1 22:06:11 mail80 kernel: qmail-smtpd[5840]: segfault at 0 ip 4884b473 sp ffe04a2c error 4 in libc-2.6.so[487dd000+14e000]
> 

Can you try fiddling with the norandmaps boot option and
/proc/sys/kernel/randomize_va_space?
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