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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 <ajaykumar.hotchandani@oracle.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
santosh.shilimkar@oracle.com 2015-08-22 15:45:28 -07:00 committed by David S. Miller
parent 0c48424021
commit 0df5f9a68a
1 changed files with 9 additions and 0 deletions
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9
net/rds/af_rds.c
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@ -438,6 +438,14 @@ static const struct proto_ops rds_proto_ops = {
.sendpage = sock_no_sendpage, .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) static int __rds_create(struct socket *sock, struct sock *sk, int protocol)
{ {
struct rds_sock *rs; 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_init_data(sock, sk);
sock->ops = &rds_proto_ops; sock->ops = &rds_proto_ops;
sk->sk_protocol = protocol; sk->sk_protocol = protocol;
sk->sk_destruct = rds_sock_destruct;
rs = rds_sk_to_rs(sk); rs = rds_sk_to_rs(sk);
spin_lock_init(&rs->rs_lock); spin_lock_init(&rs->rs_lock);