From 0df5f9a68a79f31e608b69a9369d6415a38843e1 Mon Sep 17 00:00:00 2001 From: "santosh.shilimkar@oracle.com" Date: Sat, 22 Aug 2015 15:45:28 -0700 Subject: [PATCH] RDS: add a sock_destruct callback debug aid This helps to detect the accidental processes/apps trying to destroy the RDS socket which they are sharing with other processes/apps. Reviewed-by: Ajaykumar Hotchandani Signed-off-by: Santosh Shilimkar Signed-off-by: Santosh Shilimkar Signed-off-by: David S. Miller --- net/rds/af_rds.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c index 896834c..a2f28a6 100644 --- a/net/rds/af_rds.c +++ b/net/rds/af_rds.c @@ -438,6 +438,14 @@ static const struct proto_ops rds_proto_ops = { .sendpage = sock_no_sendpage, }; +static void rds_sock_destruct(struct sock *sk) +{ + struct rds_sock *rs = rds_sk_to_rs(sk); + + WARN_ON((&rs->rs_item != rs->rs_item.next || + &rs->rs_item != rs->rs_item.prev)); +} + static int __rds_create(struct socket *sock, struct sock *sk, int protocol) { struct rds_sock *rs; @@ -445,6 +453,7 @@ static int __rds_create(struct socket *sock, struct sock *sk, int protocol) sock_init_data(sock, sk); sock->ops = &rds_proto_ops; sk->sk_protocol = protocol; + sk->sk_destruct = rds_sock_destruct; rs = rds_sk_to_rs(sk); spin_lock_init(&rs->rs_lock); -- 2.7.4