ipx: fix locking regression in ipx_sendmsg and ipx_recvmsg

[cascardo/linux.git] / net / ipx / af_ipx.c

diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c
index 91729b8..1b095ca 100644 (file)
--- a/net/ipx/af_ipx.c
+++ b/net/ipx/af_ipx.c
@@ -1764,6 +1764,7 @@ static int ipx_recvmsg(struct kiocb *iocb, struct socket *sock,
        struct ipxhdr *ipx = NULL;
        struct sk_buff *skb;
        int copied, rc;
+       bool locked = true;
 
        lock_sock(sk);
        /* put the autobinding in */
@@ -1790,6 +1791,8 @@ static int ipx_recvmsg(struct kiocb *iocb, struct socket *sock,
        if (sock_flag(sk, SOCK_ZAPPED))
                goto out;
 
+       release_sock(sk);
+       locked = false;
        skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
                                flags & MSG_DONTWAIT, &rc);
        if (!skb) {
@@ -1826,7 +1829,8 @@ static int ipx_recvmsg(struct kiocb *iocb, struct socket *sock,
 out_free:
        skb_free_datagram(sk, skb);
 out:
-       release_sock(sk);
+       if (locked)
+               release_sock(sk);
        return rc;
 }