From ec0a2ed6d8a5e555edef907895c041e285fdb495 Mon Sep 17 00:00:00 2001 From: José Pekkarinen Date: Mon, 19 Oct 2015 08:35:30 +0300 Subject: These changes are a raw update to a vanilla kernel 4.1.10, with the recently announced rt patch patch-4.1.10-rt10.patch. No further changes needed. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: I9a0cf084498133b10771e744b6da4b29dff706ba Signed-off-by: José Pekkarinen --- kernel/net/packet/af_packet.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'kernel/net/packet') diff --git a/kernel/net/packet/af_packet.c b/kernel/net/packet/af_packet.c index ef1eb2050..f9f259247 100644 --- a/kernel/net/packet/af_packet.c +++ b/kernel/net/packet/af_packet.c @@ -2308,7 +2308,8 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg) } tp_len = tpacket_fill_skb(po, skb, ph, dev, size_max, proto, addr, hlen); - if (tp_len > dev->mtu + dev->hard_header_len) { + if (likely(tp_len >= 0) && + tp_len > dev->mtu + dev->hard_header_len) { struct ethhdr *ehdr; /* Earlier code assumed this would be a VLAN pkt, * double-check this now that we have the actual @@ -2689,7 +2690,7 @@ static int packet_release(struct socket *sock) static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 proto) { struct packet_sock *po = pkt_sk(sk); - const struct net_device *dev_curr; + struct net_device *dev_curr; __be16 proto_curr; bool need_rehook; @@ -2713,15 +2714,13 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 proto) po->num = proto; po->prot_hook.type = proto; - - if (po->prot_hook.dev) - dev_put(po->prot_hook.dev); - po->prot_hook.dev = dev; po->ifindex = dev ? dev->ifindex : 0; packet_cached_dev_assign(po, dev); } + if (dev_curr) + dev_put(dev_curr); if (proto == 0 || !need_rehook) goto out_unlock; -- cgit 1.2.3-korg