tree 9a26c9da2be8e1a6eedc089dd7719e14ac9b184b
parent b7e03ec9a6b9d0c0cb1e435026d46dfcd78e48ac
author Eric Dumazet <eric.dumazet@gmail.com> 1293125566 -0800
committer David S. Miller <davem@davemloft.net> 1293125566 -0800

tcp: fix listening_get_next()

Alexey Vlasov found /proc/net/tcp could sometime loop and display
millions of sockets in LISTEN state.

In 2.6.29, when we converted TCP hash tables to RCU, we left two
sk_next() calls in listening_get_next().

We must instead use sk_nulls_next() to properly detect an end of chain.

Reported-by: Alexey Vlasov <renton@renton.name>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>