llc: Fix race condition in llc_ui_recvmsg
There is a race on sk_receive_queue between llc_ui_recvmsg and sock_queue_rcv_skb. Our current solution is to protect skb_eat in llc_ui_recvmsg with the queue spinlock. Signed-off-by: Radu Iliescu <riliescu@ixiacom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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