diff options
| author | Nikita Zhandarovich <n.zhandarovich@fintech.ru> | 2023-02-01 18:21:03 +0100 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2023-02-02 09:12:12 +0100 |
| commit | ef42520240aacfc0d46c8d780c051d135a8dc9b7 (patch) | |
| tree | f33beaa66662d47a4c416190d8a63f4c12884560 | |
| parent | RDMA/mlx5: Add work to remove temporary entries from the cache (diff) | |
| download | linux-ef42520240aacfc0d46c8d780c051d135a8dc9b7.tar.xz linux-ef42520240aacfc0d46c8d780c051d135a8dc9b7.zip | |
RDMA/cxgb4: add null-ptr-check after ip_dev_find()
ip_dev_find() may return NULL and assign it to pdev which is
dereferenced later.
Fix this by checking the return value of ip_dev_find() for NULL
similar to the way it is done with other instances of said function.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 1cab775c3e75 ("RDMA/cxgb4: Fix LE hash collision bug for passive open connection")
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Link: https://lore.kernel.org/r/20230201172103.17261-1-n.zhandarovich@fintech.ru
Signed-off-by: Leon Romanovsky <leon@kernel.org>
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/cm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index 499a425a3379..ea3ddf0d2411 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -4144,6 +4144,10 @@ static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb) if (neigh->dev->flags & IFF_LOOPBACK) { pdev = ip_dev_find(&init_net, iph->daddr); + if (!pdev) { + pr_err("%s - failed to find device!\n", __func__); + goto free_dst; + } e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, pdev, 0); pi = (struct port_info *)netdev_priv(pdev); |