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rds: tcp: use sock_create_lite() to create the accept socket

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There are two problems with calling sock_create_kern() from
rds_tcp_accept_one()
1. it sets up a new_sock->sk that is wasteful, because this ->sk
   is going to get replaced by inet_accept() in the subsequent ->accept()
2. The new_sock->sk is a leaked reference in sock_graft() which
   expects to find a null parent->sk

Avoid these problems by calling sock_create_lite().

Signed-off-by: Sowmini Varadhan <[email protected]>
Acked-by: Santosh Shilimkar <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Sowmini Varadhan authored and David S. Miller committed 2017-07-08 11:16:16 +01:00
1 parent 9dc351da75
commit 0933a578cd
1 file changed
+1 -1
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net/rds/tcp_listen.c
+1 -1
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@@ -136,7 +136,7 @@ int rds_tcp_accept_one(struct socket *sock)
if (!sock) /* module unload or netns delete in progress */
return -ENETUNREACH;
ret = sock_create_kern(sock_net(sock->sk), sock->sk->sk_family,
ret = sock_create_lite(sock->sk->sk_family,
sock->sk->sk_type, sock->sk->sk_protocol,
&new_sock);
if (ret)