Re: kernel panic on heavily loaded 2.4.20 router

Martin Josefsson (gandalf@wlug.westbo.se)
22 May 2003 23:28:01 +0200


On Thu, 2003-05-22 at 21:47, Frank Dekervel wrote:
> hello,
>
> a linux-2.4.20 (vanilla) machine we use as a router/iptables firewall
> crashes once a month in what seems to be the IP stack
> (see the lspci/lsmod/ksymoops output below). Does somebody know
> what the cause could be ?

> Module Size Used by Not tainted
> ipt_limit 960 19 (autoclean)
> ip_conntrack_ftp 3776 0 (unused)
> ipt_state 608 4 (autoclean)
> ipt_LOG 3232 13 (autoclean)
> iptable_nat 14452 1 (autoclean)
> ip_conntrack 16716 3 (autoclean) [ip_conntrack_ftp ipt_state iptable_nat]
> iptable_filter 1728 1 (autoclean)
> ip_tables 10624 7 [ipt_limit ipt_state ipt_LOG iptable_nat iptable_filter]
> serial 42336 0 (autoclean)
> ne2k-pci 4832 2
> 8390 5952 0 [ne2k-pci]
> via-rhine 11912 1
> mii 2288 0 [via-rhine]
> 3c59x 24712 1

Kernel 2.4.20 contains a bug in conntrack (memory-corruption) that can
be triggered when using conntrack helpers. It's fixed in 2.4.21-rc2 so I
suggest you try that. The crashes you see might be the result of this
bug, or maybe not.

I suggest you send this report to linux-net@vger.kernel.org and ask if
it looks like a real bug or if it's memory-corruption.
But you really should upgrade your kernel.

-- 
/Martin
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/