[PATCH] crypto: chtls: Add check alloc_skb() returned value

[Charles Han]

alloc_skb() can return a NULL pointer on failure.But these returned
value in send_defer_abort_rpl() and chtls_close_conn()  not checked.

Fixes: cc35c88ae4db ("crypto : chtls - CPL handler definition")
Signed-off-by: Charles Han <hanchunchao@xxxxxxxxxx>
---
 .../net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c  | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
index 6f6525983130..725cce34f25a 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
@@ -306,6 +306,10 @@ static void chtls_close_conn(struct sock *sk)
 	tid = csk->tid;
 
 	skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL);
+	if (!skb) {
+		pr_warn("%s: cannot allocate skb!\n", __func__);
+		return;
+	}
 	req = (struct cpl_close_con_req *)__skb_put(skb, len);
 	memset(req, 0, len);
 	req->wr.wr_hi = htonl(FW_WR_OP_V(FW_TP_WR) |
@@ -1991,6 +1995,11 @@ static void send_defer_abort_rpl(struct chtls_dev *cdev, struct sk_buff *skb)
 
 	reply_skb = alloc_skb(sizeof(struct cpl_abort_rpl),
 			      GFP_KERNEL | __GFP_NOFAIL);
+	if (!reply_skb) {
+		pr_warn("%s: cannot allocate skb!\n", __func__);
+		return;
+	}
+
 	__skb_put(reply_skb, sizeof(struct cpl_abort_rpl));
 	set_abort_rpl_wr(reply_skb, GET_TID(req),
 			 (req->status & CPL_ABORT_NO_RST));
-- 
2.31.1