[IPV6]: bh_lock_sock_nested on tcp_v6_rcv
A while ago Ingo patched tcp_v4_rcv on net/ipv4/tcp_ipv4.c to use bh_lock_sock_nested and silence a lock validator warning. This fixed it for IPv4, but recently I saw a report of the same warning on IPv6. Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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