Re: RHEL4 kernel-2.6.9-42.0.2.EL

From: Robert Hancock
Date: Wed Jul 18 2007 - 19:41:58 EST


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@xxxxxxxxxxxxx
Home Page: http://www.roberthancock.com/

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