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Re: kern/42248: in_cksum: out of data
The following reply was made to PR kern/42248; it has been noted by GNATS.
From: David Holland <dholland-bugs%netbsd.org@localhost>
Subject: Re: kern/42248: in_cksum: out of data
Date: Mon, 14 Dec 2009 02:46:07 +0000
On Fri, Oct 30, 2009 at 09:30:00AM +0000, tnn%NetBSD.org@localhost wrote:
> Obviously this is highly reproducible and I'm willing to add any
> instrumentation that might help to identify the cause.
> Oct 29 17:11:46 build /netbsd: in_cksum: out of data
This message is caused by cpu_in_cksum (in netinet/cpu_in_cksum.c)
running off the end of its mbuf chain.
Changing the printf to a panic (or breaking in the debugger or
whatever) and seeing where it's coming from might be illuminating.
Given how regular it is, it's probably triggered by something external.
> Run ntpd(8), dhcpd(8), openvpn and transmission-daemon.
...although it could also be dhcp.
David A. Holland
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