diff options
| author | Colin Ian King <colin.king@canonical.com> | 2017-09-29 22:51:23 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-01 06:12:45 +0300 |
| commit | 075cfdd659cb1e86f948f11ba577f27706f0756e (patch) | |
| tree | 4429d7118de8d3454b5320ed5bc5a98bbbae475b | |
| parent | 09af87d18f6ba05588e6316c47fdacf06e28cce8 (diff) | |
| download | linux-075cfdd659cb1e86f948f11ba577f27706f0756e.tar.xz | |
net: hns3: fix null pointer dereference before null check
pointer ndev is being dereferenced with the call to netif_running
before it is being null checked. Re-order the code to only dereference
ndev after it has been null checked.
Detected by CoverityScan, CID#1457206 ("Dereference before null check")
Fixes: 9df8f79a4d29 ("net: hns3: Add DCB support when interacting with network stack")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c index 4a0890f98b70..c31506514e5d 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hns3_enet.c @@ -2865,7 +2865,7 @@ static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc) { struct hnae3_knic_private_info *kinfo = &handle->kinfo; struct net_device *ndev = kinfo->netdev; - bool if_running = netif_running(ndev); + bool if_running; int ret; u8 i; @@ -2875,6 +2875,8 @@ static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc) if (!ndev) return -ENODEV; + if_running = netif_running(ndev); + ret = netdev_set_num_tc(ndev, tc); if (ret) return ret; |