netdev - [PATCH] fix MSG_OOB test in caif_seqpkt

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Message-ID: <20150314052221.GS29656@ZenIV.linux.org.uk>
Date:	Sat, 14 Mar 2015 05:22:21 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	netdev@...r.kernel.org
Cc:	David Miller <davem@...emloft.net>,
	Sjur Braendeland <sjur.brandeland@...ricsson.com>
Subject: [PATCH] fix MSG_OOB test in caif_seqpkt_recvmsg()

	It should be checking flags, not msg->msg_flags.  It's ->sendmsg()
instances that need to look for that in ->msg_flags, ->recvmsg() ones
(including the other ->recvmsg() instance in that file, as well as
unix_dgram_recvmsg() this one claims to be imitating) check in flags.
Braino had been introduced in commit dcda13 ("caif: Bugfix - use MSG_TRUNC
in receive") back in 2010, so it goes quite a while back.

Cc: stable@...r.kernel.org # 2.6.35
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c
index 91aa225..1caa161 100644
--- a/net/caif/caif_socket.c
+++ b/net/caif/caif_socket.c
@@ -281,7 +281,7 @@ static int caif_seqpkt_recvmsg(struct socket *sock, struct msghdr *m,
 	int copylen;
 
 	ret = -EOPNOTSUPP;
-	if (m->msg_flags&MSG_OOB)
+	if (flags & MSG_OOB)
 		goto read_error;
 
 	skb = skb_recv_datagram(sk, flags, 0 , &ret);
--
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