From: Pan Bian Date: Sun, 23 Apr 2017 09:09:11 +0000 (+0800) Subject: iw_cxgb4: check return value of alloc_skb X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9ef63f31ad0ba28c68c8367e5b1cbba720fec597;p=openwrt%2Fstaging%2Fblogic.git iw_cxgb4: check return value of alloc_skb Function alloc_skb() will return a NULL pointer when there is no enough memory. However, the return value of alloc_skb() is directly used without validation in function send_fw_pass_open_req(). This patches checks the return value of alloc_skb() against NULL. Signed-off-by: Pan Bian Signed-off-by: Doug Ledford --- diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index 02faf1f125fd..b6fe45924c6e 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -3799,6 +3799,8 @@ static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb, int ret; req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL); + if (!req_skb) + return; req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req)); memset(req, 0, sizeof(*req)); req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL_F);