diff options
| author | xypron.glpk@gmx.de <xypron.glpk@gmx.de> | 2016-05-17 22:28:54 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-05-10 10:26:31 +0200 |
| commit | 0c17b22c8c5aa1f71a30974066fea2d4b2511980 (patch) | |
| tree | f3ec835088ea52394357142da3caddc2c350b609 | |
| parent | 6417d8fe3e507e14194a5a4778581a85769e0cc5 (diff) | |
net: ehea: avoid null pointer dereference
commit 1740c29a46b30a2f157afc473156f157e599d4c2 upstream.
ehea_get_port may return NULL. Do not dereference NULL value.
Fixes: 8c4877a4128e ("ehea: Use the standard logging functions")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@debian.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/ibm/ehea/ehea_main.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/net/ethernet/ibm/ehea/ehea_main.c b/drivers/net/ethernet/ibm/ehea/ehea_main.c index fdbba588c6db..efe84ca20da7 100644 --- a/drivers/net/ethernet/ibm/ehea/ehea_main.c +++ b/drivers/net/ethernet/ibm/ehea/ehea_main.c @@ -1169,16 +1169,15 @@ static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe) ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe); portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe); port = ehea_get_port(adapter, portnum); + if (!port) { + netdev_err(NULL, "unknown portnum %x\n", portnum); + return; + } dev = port->netdev; switch (ec) { case EHEA_EC_PORTSTATE_CHG: /* port state change */ - if (!port) { - netdev_err(dev, "unknown portnum %x\n", portnum); - break; - } - if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) { if (!netif_carrier_ok(dev)) { ret = ehea_sense_port_attr(port); |