From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Mon, 18 Nov 2013 06:07:45 +0000 (+0100)
Subject: ping: prevent NULL pointer dereference on write to msg_name
X-Git-Tag: v3.13-rc1~33^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cf970c002d270c36202bd5b9c2804d3097a52da0;p=pandora-kernel.git

ping: prevent NULL pointer dereference on write to msg_name

A plain read() on a socket does set msg->msg_name to NULL. So check for
NULL pointer first.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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