diff options
| author | Frank Blaschka <frank.blaschka@de.ibm.com> | 2012-07-24 22:34:29 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-09 08:31:38 -0700 |
| commit | bfc41a820b085dff6048aab510a4dcb48b570d3b (patch) | |
| tree | bbef45ba4dc4adf7b3e7d7685e35edfa17fd4cfb /drivers/s390 | |
| parent | 7e7a57b3ea066e3caf149feb37c6487d8423c772 (diff) | |
qeth: repair crash in qeth_l3_vlan_rx_kill_vid()
commit eabfbe6230ee7363681e7a561948d362b87169f0 upstream.
Commit efc73f4b "net: Fix memory leak - vlan_info struct" adds deletion of
VLAN 0 for devices with feature NETIF_F_HW_VLAN_FILTER. For driver
qeth these are the layer 3 devices. Usually there exists no
separate vlan net_device for VLAN 0. Thus the qeth functions
qeth_l3_free_vlan_addresses4() and qeth_l3_free_vlan_addresses6()
require an extra checking if function __vlan_find_dev_deep()
returns with a net_device.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.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')
| -rw-r--r-- | drivers/s390/net/qeth_l3_main.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index f8592160768..951b6cf086a 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -1818,6 +1818,8 @@ static void qeth_l3_free_vlan_addresses4(struct qeth_card *card, QETH_CARD_TEXT(card, 4, "frvaddr4"); netdev = __vlan_find_dev_deep(card->dev, vid); + if (!netdev) + return; in_dev = in_dev_get(netdev); if (!in_dev) return; @@ -1846,6 +1848,8 @@ static void qeth_l3_free_vlan_addresses6(struct qeth_card *card, QETH_CARD_TEXT(card, 4, "frvaddr6"); netdev = __vlan_find_dev_deep(card->dev, vid); + if (!netdev) + return; in6_dev = in6_dev_get(netdev); if (!in6_dev) return; |