qlcnic: Avoid potential NULL pointer dereference
authorAditya Pakki <pakki001@umn.edu>
Thu, 14 Mar 2019 20:31:40 +0000 (15:31 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 4 May 2019 06:49:06 +0000 (08:49 +0200)
commitaba0a087a00096c3831b6524852a972df5f5f3d9
treec907d6e90097e6c6cf25837ac3383c17c82ecfac
parentaa70f06710411f75a399505c32e2e273164b7577
qlcnic: Avoid potential NULL pointer dereference

[ Upstream commit 5bf7295fe34a5251b1d241b9736af4697b590670 ]

netdev_alloc_skb can fail and return a NULL pointer which is
dereferenced without a check. The patch avoids such a scenario.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c