diff options
| author | Julian Wiedmann <jwi@linux.vnet.ibm.com> | 2017-05-10 20:07:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-07 13:07:42 +0300 |
| commit | 96a81eb6ad5ab062dea32c6e764518effa5891e1 (patch) | |
| tree | f48511eef117bc5fbd93f250954fb32b6a7e064f /drivers/s390/net | |
| parent | b68c2e387a232a9fc09ccbed792649481ca226f4 (diff) | |
| download | linux-96a81eb6ad5ab062dea32c6e764518effa5891e1.tar.xz | |
s390/qeth: avoid null pointer dereference on OSN
[ Upstream commit 25e2c341e7818a394da9abc403716278ee646014 ]
Access card->dev only after checking whether's its valid.
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/s390/net')
| -rw-r--r-- | drivers/s390/net/qeth_l2_main.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index cdb03403b7a2..5d010aa89852 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -1106,7 +1106,6 @@ static int qeth_l2_setup_netdev(struct qeth_card *card) case QETH_CARD_TYPE_OSN: card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, ether_setup); - card->dev->flags |= IFF_NOARP; break; default: card->dev = alloc_etherdev(0); @@ -1119,9 +1118,12 @@ static int qeth_l2_setup_netdev(struct qeth_card *card) card->dev->watchdog_timeo = QETH_TX_TIMEOUT; card->dev->mtu = card->info.initial_mtu; card->dev->netdev_ops = &qeth_l2_netdev_ops; - card->dev->ethtool_ops = - (card->info.type != QETH_CARD_TYPE_OSN) ? - &qeth_l2_ethtool_ops : &qeth_l2_osn_ops; + if (card->info.type == QETH_CARD_TYPE_OSN) { + card->dev->ethtool_ops = &qeth_l2_osn_ops; + card->dev->flags |= IFF_NOARP; + } else { + card->dev->ethtool_ops = &qeth_l2_ethtool_ops; + } card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { card->dev->hw_features = NETIF_F_SG; |