From a41bd25ae67d3e4052c7f00ee9f2b4ba9219309e Mon Sep 17 00:00:00 2001 From: Paolo Abeni Date: Thu, 25 Aug 2016 18:42:35 +0200 Subject: [PATCH] sunrpc: fix UDP memory accounting The commit f9b2ee714c5c ("SUNRPC: Move UDP receive data path into a workqueue context"), as a side effect, moved the skb_free_datagram() call outside the scope of the related socket lock, but UDP sockets require such lock to be held for proper memory accounting. Fix it by replacing skb_free_datagram() with skb_free_datagram_locked(). Fixes: f9b2ee714c5c ("SUNRPC: Move UDP receive data path into a workqueue context") Reported-and-tested-by: Jan Stancek Signed-off-by: Paolo Abeni Cc: stable@vger.kernel.org # 4.4+ Signed-off-by: Trond Myklebust --- net/sunrpc/xprtsock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 8ede3bc..bf16883 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -1074,7 +1074,7 @@ static void xs_udp_data_receive(struct sock_xprt *transport) skb = skb_recv_datagram(sk, 0, 1, &err); if (skb != NULL) { xs_udp_data_read_skb(&transport->xprt, sk, skb); - skb_free_datagram(sk, skb); + skb_free_datagram_locked(sk, skb); continue; } if (!test_and_clear_bit(XPRT_SOCK_DATA_READY, &transport->sock_state)) -- 2.7.4