From cabede8b4f2b746232aa25730a0b752de1cb82ca Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Mon, 13 May 2019 07:19:55 -0700 Subject: bpf: sockmap fix msg->sg.size account on ingress skb When converting a skb to msg->sg we forget to set the size after the latest ktls/tls code conversion. This patch can be reached by doing a redir into ingress path from BPF skb sock recv hook. Then trying to read the size fails. Fix this by setting the size. Fixes: 604326b41a6fb ("bpf, sockmap: convert to generic sk_msg interface") Signed-off-by: John Fastabend Signed-off-by: Daniel Borkmann --- net/core/skmsg.c | 1 + 1 file changed, 1 insertion(+) (limited to 'net') diff --git a/net/core/skmsg.c b/net/core/skmsg.c index 49d1efa329d7..93bffaad2135 100644 --- a/net/core/skmsg.c +++ b/net/core/skmsg.c @@ -411,6 +411,7 @@ static int sk_psock_skb_ingress(struct sk_psock *psock, struct sk_buff *skb) sk_mem_charge(sk, skb->len); copied = skb->len; msg->sg.start = 0; + msg->sg.size = copied; msg->sg.end = num_sge == MAX_MSG_FRAGS ? 0 : num_sge; msg->skb = skb; -- cgit