From: Moni Shoua <monis@mellanox.com>
Date: Thu, 21 Aug 2014 11:28:37 +0000 (+0300)
Subject: IB/mlx4: Avoid null pointer dereference in mlx4_ib_scan_netdevs()
X-Git-Tag: fixes-for-v3.18-merge-window~78^2^4~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e381835cf1b8e3b2857277dbc3b77d8c5350f70a;p=pandora-kernel.git

IB/mlx4: Avoid null pointer dereference in mlx4_ib_scan_netdevs()

When Ethernet netdev is not present for a port (e.g. when the link
layer type of the port is InfiniBand) it's possible to dereference a
null pointer when we do netdevice scanning.

To fix that, we move a section of code that needs to run only when
netdev is present to a proper if () statement.

Fixes: ad4885d279b6 ("IB/mlx4: Build the port IBoE GID table properly under bonding")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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