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l2tp: take a reference for kernel sockets in l2tp_tunnel_sock_lookup

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When looking up the tunnel socket in struct l2tp_tunnel, hold a reference
whether the socket was created by the kernel or by userspace.

Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Parkin 2013-03-19 06:11:17 +00:00 committed by David S. Miller
parent 2b551c6e7d
commit 8abbbe8ff5
1 changed files with 2 additions and 0 deletions
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2
net/l2tp/l2tp_core.c
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@ -191,6 +191,7 @@ struct sock *l2tp_tunnel_sock_lookup(struct l2tp_tunnel *tunnel)
} else {
/* Socket is owned by kernelspace */
sk = tunnel->sock;
sock_hold(sk);
}
out:
@ -209,6 +210,7 @@ void l2tp_tunnel_sock_put(struct sock *sk)
}
sock_put(sk);
}
sock_put(sk);
}
EXPORT_SYMBOL_GPL(l2tp_tunnel_sock_put);