From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Thu, 21 Nov 2013 02:14:34 +0000 (+0100)
Subject: net: add BUG_ON if kernel advertises msg_namelen > sizeof(struct sockaddr_storage)
X-Git-Tag: v3.2.54~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a3fd2196b6b82d93dc2878c5291de8014ba61d13;p=pandora-kernel.git

net: add BUG_ON if kernel advertises msg_namelen > sizeof(struct sockaddr_storage)

[ Upstream commit 68c6beb373955da0886d8f4f5995b3922ceda4be ]

In that case it is probable that kernel code overwrote part of the
stack. So we should bail out loudly here.

The BUG_ON may be removed in future if we are sure all protocols are
conformant.

Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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