From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Thu, 13 Jan 2011 13:19:55 +0000 (+0100)
Subject: netfilter: ctnetlink: fix loop in ctnetlink_get_conntrack()
X-Git-Tag: v2.6.38-rc1~50^2~21^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f31e8d4982653b39fe312f9938be0f49dd9ab5fa;p=pandora-kernel.git

netfilter: ctnetlink: fix loop in ctnetlink_get_conntrack()

This patch fixes a loop in ctnetlink_get_conntrack() that can be
triggered if you use the same socket to receive events and to
perform a GET operation. Under heavy load, netlink_unicast()
may return -EAGAIN, this error code is reserved in nfnetlink for
the module load-on-demand. Instead, we return -ENOBUFS which is
the appropriate error code that has to be propagated to
user-space.

Reported-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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