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iw_cxgb4: check return value of alloc_skb

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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 <bianpan2016@163.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Pan Bian 2017-04-23 17:09:11 +08:00 committed by Doug Ledford
parent 27b0b83233
commit 9ef63f31ad
1 changed files with 2 additions and 0 deletions
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drivers/infiniband/hw/cxgb4/cm.c
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@ -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);