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Commit 1f18b717 authored by Mariusz Kozlowski's avatar Mariusz Kozlowski Committed by David S. Miller
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net: Fix header size check for GSO case in recvmsg (af_packet) 



Parameter 'len' is size_t type so it will never get negative.

Signed-off-by: default avatarMariusz Kozlowski <mk@lab.zgora.pl>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7c13a0d9

net/packet/af_packet.c

+3 −1
Original line number Diff line number Diff line
@@ -1610,9 +1610,11 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock, 


		err = -EINVAL;

		vnet_hdr_len = sizeof(vnet_hdr);

		if ((len -= vnet_hdr_len) < 0)

		if (len < vnet_hdr_len)

			goto out_free;



		len -= vnet_hdr_len;



		if (skb_is_gso(skb)) {

			struct skb_shared_info *sinfo = skb_shinfo(skb);