af_iucv: fix oops in iucv_sock_recvmsg() for MSG_PEEK flag
If iucv_sock_recvmsg() is called with MSG_PEEK flag set, the skb is enqueued twice. If the socket is then closed, the pointer to the skb is freed twice. Remove the skb_queue_head() call for MSG_PEEK, because the skb_recv_datagram() function already handles MSG_PEEK (does not dequeue the skb). Signed-off-by: NHendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: NUrsula Braun <ursula.braun@de.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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