[PATCH] NFC: Handle return value of skb_dequeue()
From: Arvind Yadav <hidden>
Date: 2017-12-16 19:44:42
Also in:
linux-wireless, lkml
Subsystem:
networking [general], nfc subsystem, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, David Heidelberg, Linus Torvalds
skb_dequeue() will return NULL for an empty list or a pointer to the head element. Signed-off-by: Arvind Yadav <redacted> --- net/nfc/rawsock.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index e2188de..c6de1ac 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c@@ -201,6 +201,10 @@ static void rawsock_tx_work(struct work_struct *work) } skb = skb_dequeue(&sk->sk_write_queue); + if (!skb) { + rawsock_write_queue_purge(sk); + return; + } sock_hold(sk); rc = nfc_data_exchange(dev, target_idx, skb,
--
2.7.4