Messages in this thread Patch in this message | | | From | Kangjie Lu <> | Subject | [PATCH] infiniband: cxgb4: fix a potential NULL pointer dereference | Date | Fri, 8 Mar 2019 23:19:21 -0600 |
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get_skb may fail and return NULL. The fix returns "ENOMEM" when it fails to avoid NULL dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu> --- drivers/infiniband/hw/cxgb4/cm.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index 8221813219e5..502a54d57e2c 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -1919,6 +1919,9 @@ static int send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid) int win; skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); + if (!skb) + return -ENOMEM; + req = __skb_put_zero(skb, sizeof(*req)); req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR)); req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16))); -- 2.17.1
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