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| author |   Colin Ian King <colin.king@canonical.com> | 2019-04-13 17:00:26 +0100 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2019-04-16 08:03:17 -0300 |
| commit | a6d2a5a92e67d151c98886babdc86d530d27111c (patch) | |
| tree | 5f9a9ea6515a97a7536b5b3eacba30c840dbdb98 /drivers/infiniband/hw/cxgb4 | |
| parent | RDMA/mlx5: Check for error return in flow_rule rather than err (diff) | |
| download | linux-dev-a6d2a5a92e67d151c98886babdc86d530d27111c.tar.xz linux-dev-a6d2a5a92e67d151c98886babdc86d530d27111c.zip | |
RDMA/cxgb4: Fix null pointer dereference on alloc_skb failure
Currently if alloc_skb fails to allocate the skb a null skb is passed to
t4_set_arp_err_handler and this ends up dereferencing the null skb. Avoid
the NULL pointer dereference by checking for a NULL skb and returning
early.
Addresses-Coverity: ("Dereference null return")
Fixes: b38a0ad8ec11 ("RDMA/cxgb4: Set arp error handler for PASS_ACCEPT_RPL messages")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/cm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index 1e68d87b663d..0f3b1193d5f8 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -460,6 +460,8 @@ static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) skb_reset_transport_header(skb); } else { skb = alloc_skb(len, gfp); + if (!skb) + return NULL; } t4_set_arp_err_handler(skb, NULL, NULL); return skb; |