From mboxrd@z Thu Jan  1 00:00:00 1970
From: Patrick McHardy <kaber@trash.net>
Subject: Re: ip_conntrack_lock not readlocked
Date: Sun, 30 Oct 2005 16:37:06 +0100
Message-ID: <4364E8A2.60603@trash.net>
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To: Daniel Chojecki <boka@piekna.pl>
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Daniel Chojecki wrote:
> Hi !
> 
> I have a firewall on Dell 1850 (3353540k of RAM) with:
> 
> - vanilla kernel: 2.4.31 with openwall patches - version 1 and pptp. -
> iptables 1.3.3
> - patch-o-matic-ng-20050904
> 
> Errors in /var/log/messages occurs when users (approx. 320) use internet
> and dmz connection.
> 
> Oct 21 08:24:06 router kernel: ASSERT ip_conntrack_core.c:94
> &ip_conntrack_lock readlocked
> Oct 21 08:24:06 router kernel: ASSERT ip_conntrack_core.c:94
> &ip_conntrack_lock readlocked

You could try to get a backtrace by replacing the printk
in MUST_BE_READ_WRITE_UNLOCKED (include/linux/netfilter_ipv4/lockhelp.h)
by a BUG().