redonkable
/
remarkable-linux
1
0
Fork 0
Code Releases Activity

net/sock: add WARN_ON(parent->sk) in sock_graft() 

sock_graft() unilaterally sets up parent->sk based on the
assumption that the existing parent->sk is null. If this
condition is not true, then the existing parent->sk would
be leaked, so add a WARN_ON() to alert callers who may fall
in this category.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
zero-colors
Sowmini Varadhan 2017-07-06 08:15:07 -07:00 committed by David S. Miller
parent 0933a578cd
commit 0ffdaf5b41
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/net/sock.h
View File

@ -1697,6 +1697,7 @@ static inline void sock_orphan(struct sock *sk)
static inline void sock_graft(struct sock *sk, struct socket *parent)
{
WARN_ON(parent->sk);
write_lock_bh(&sk->sk_callback_lock);
sk->sk_wq = parent->wq;
parent->sk = sk;