linux-kernel - Re: RHEL4 kernel-2.6.9-42.0.2.EL

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Message-id: <469EA3B7.2040201@shaw.ca>
Date:	Wed, 18 Jul 2007 17:35:19 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	andrew2.li@...igroup.com
Cc:	linux-kernel@...r.kernel.org
Subject: Re: RHEL4 kernel-2.6.9-42.0.2.EL

Andrew Li wrote:
> Hi guys,
> 
> I have a strange problem with cron, it is doing a segfault every minute.
> This problem happened out of the blue, according to authlog no users
> have logged onto the system in between the time it last worked and the
> time it began to fail.
> 
> The error messages from messages file is :
> Jul 18 16:16:01 host100 kernel: crond[29540]: segfault at
> 0000000000000000 rip 0000000000000000 rsp 0000007fbffbf018 error 14
> 
> Looking at arch/x86_64/mm/fault.c, this happens when a user proc is
> trying to access memory thats not in its memory map. But the address
> reported in messages doesn't match /proc/pid/maps.
> 
> Does anyone have any idea what this might be?

Looks like it's jumping to a null address. Presumably a cron bug.

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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