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Commit 3811ae76 authored by Gao feng's avatar Gao feng Committed by David S. Miller
Browse files

net: tun: release the reference of tun device in tun_recvmsg 



We forget to release the reference of tun device in tun_recvmsg.
bug introduced in commit 54f968d6
(tuntap: move socket to tun_file)

Signed-off-by: default avatarGao feng <gaofeng@cn.fujitsu.com>
Acked-by: default avatarJason Wang <jasowang@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b9e48de1

drivers/net/tun.c

+5 −2
Original line number Diff line number Diff line
@@ -1471,14 +1471,17 @@ static int tun_recvmsg(struct kiocb *iocb, struct socket *sock, 
	if (!tun)

		return -EBADFD;



	if (flags & ~(MSG_DONTWAIT|MSG_TRUNC))

		return -EINVAL;

	if (flags & ~(MSG_DONTWAIT|MSG_TRUNC)) {

		ret = -EINVAL;

		goto out;

	}

	ret = tun_do_read(tun, tfile, iocb, m->msg_iov, total_len,

			  flags & MSG_DONTWAIT);

	if (ret > total_len) {

		m->msg_flags |= MSG_TRUNC;

		ret = flags & MSG_TRUNC ? ret : total_len;

	}

out:

	tun_put(tun);

	return ret;

}