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		ee54dc1	`From: "David S. Miller" <davem@davemloft.net>`
		ee54dc1	`Date: Fri, 1 May 2015 22:02:47 -0400`
		ee54dc1	`Subject: [PATCH] ipv4: Missing sk_nulls_node_init() in ping_unhash().`
		ee54dc1
		ee54dc1	`If we don't do that, then the poison value is left in the ->pprev`
		ee54dc1	`backlink.`
		ee54dc1
		ee54dc1	`This can cause crashes if we do a disconnect, followed by a connect().`
		ee54dc1
		ee54dc1	`Tested-by: Linus Torvalds <torvalds@linux-foundation.org>`
		ee54dc1	`Reported-by: Wen Xu <hotdog3645@gmail.com>`
		ee54dc1	`Signed-off-by: David S. Miller <davem@davemloft.net>`
		ee54dc1	`---`
		ee54dc1	`net/ipv4/ping.c \| 1 +`
		ee54dc1	`1 file changed, 1 insertion(+)`
		ee54dc1
		ee54dc1	`diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c`
		ee54dc1	`index 208d5439e59b..787b0d699969 100644`
		ee54dc1	`--- a/net/ipv4/ping.c`
		ee54dc1	`+++ b/net/ipv4/ping.c`
		ee54dc1	`@@ -158,6 +158,7 @@ void ping_unhash(struct sock *sk)`
		ee54dc1	`if (sk_hashed(sk)) {`
		ee54dc1	`write_lock_bh(&ping_table.lock);`
		ee54dc1	`hlist_nulls_del(&sk->sk_nulls_node);`
		ee54dc1	`+ sk_nulls_node_init(&sk->sk_nulls_node);`
		ee54dc1	`sock_put(sk);`
		ee54dc1	`isk->inet_num = 0;`
		ee54dc1	`isk->inet_sport = 0;`