From: Jack Morgenstein <jackm@dev.mellanox.co.il>
Date: Tue, 30 Sep 2014 09:03:49 +0000 (+0300)
Subject: net/mlx4_core: Protect QUERY_PORT wrapper from untrusted guests
X-Git-Tag: fixes-against-v3.18-rc2~144^2~102^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a7401b9cf342775921f7b8eb2f9cedcaf004a929;p=pandora-kernel.git

net/mlx4_core: Protect QUERY_PORT wrapper from untrusted guests

The function mlx4_QUERY_PORT_wrapper implements only the
QUERY_PORT "general" case (opcode modifier = 0).

Verify that the opcode modifier is zero, and also that the
input modifier contains only the port number in bits 0..7
(all other bits should be zero).

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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