3.16.74-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Colin Ian King <[email protected]> commit a6d2a5a92e67d151c98886babdc86d530d27111c upstream. 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 <[email protected]> Acked-by: Potnuri Bharat Teja <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- drivers/infiniband/hw/cxgb4/cm.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -346,6 +346,8 @@ static struct sk_buff *get_skb(struct sk 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;
