skb_peek() might return an empty list. skb should be checked before calling
llc_pdu_sn_hdr() with it.
Spotted by the Coverity checker.
Signed-off-by: Eugene Teo <[email protected]>
diff --git a/net/llc/llc_conn.c b/net/llc/llc_conn.c
index 3b8cfbe..28a3994 100644
--- a/net/llc/llc_conn.c
+++ b/net/llc/llc_conn.c
@@ -323,7 +323,8 @@ int llc_conn_remove_acked_pdus(struct sock *sk, u8 nr, u16
*how_many_unacked)
if (!q_len)
goto out;
- skb = skb_peek(&llc->pdu_unack_q);
+ if (! (skb = skb_peek(&llc->pdu_unack_q)))
+ goto out;
pdu = llc_pdu_sn_hdr(skb);
/* finding position of last acked pdu in queue */
-
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