Add the check for the return value of skb_clone since it may return NULL
pointer and cause NULL pointer dereference in send_pkt.
Fixes: 18722c247023 ("Bluetooth: Enable 6LoWPAN support for BT LE devices")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
---
net/bluetooth/6lowpan.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index 4eb1b3ced0d2..bf42a0b03e20 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -477,6 +477,10 @@ static int send_mcast_pkt(struct sk_buff *skb, struct net_device *netdev)
int ret;
local_skb = skb_clone(skb, GFP_ATOMIC);
+ if (!local_skb) {
+ rcu_read_unlock();
+ return -ENOMEM;
+ }
BT_DBG("xmit %s to %pMR type %u IP %pI6c chan %p",
netdev->name,
--
2.25.1
