netdev - Re: [patch 11/11] netfilter warning fix

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Date:	Tue, 06 Feb 2007 13:23:57 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	mingo@...e.hu
Cc:	akpm@...ux-foundation.org, netdev@...r.kernel.org, kaber@...sh.net,
	dipankar@...ibm.com, paulmck@...ibm.com
Subject: Re: [patch 11/11] netfilter warning fix

From: Ingo Molnar <mingo@...e.hu>
Date: Tue, 6 Feb 2007 22:02:51 +0100

> So i'm wondering what other assumptions there are (or can be) 
> about rcu_read_lock() also being a preempt-off point. Thanks!

I showed the examples in my detailed analysis yesterday.

Beause I love hearing myself say the same thing over and over so much
I'll restate it for you.

net/netfilter/nf_conntrack_core.c, calls:

	l4proto = __nf_ct_l4proto_find((u_int16_t)pf, protonum);

whichs assumes that preemption is disabled.
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