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| author | Tung Nguyen <tung.q.nguyen@dektech.com.au> | 2019-11-28 04:10:06 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-11-29 08:09:14 +0100 |
| commit | 91a4a3eb433e4d786420c41f3c08d1d16c605962 (patch) | |
| tree | af35c182a1071b62fcc60062ae863b85c961c407 /net | |
| parent | tipc: fix potential memory leak in __tipc_sendmsg() (diff) | |
| download | linux-91a4a3eb433e4d786420c41f3c08d1d16c605962.tar.xz linux-91a4a3eb433e4d786420c41f3c08d1d16c605962.zip | |
tipc: fix wrong socket reference counter after tipc_sk_timeout() returns
When tipc_sk_timeout() is executed but user space is grabbing
ownership, this function rearms itself and returns. However, the
socket reference counter is not reduced. This causes potential
unexpected behavior.
This commit fixes it by calling sock_put() before tipc_sk_timeout()
returns in the above-mentioned case.
Fixes: afe8792fec69 ("tipc: refactor function tipc_sk_timeout()")
Signed-off-by: Tung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/tipc/socket.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 7baed2c2c93d..fb5595081a05 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -2759,6 +2759,7 @@ static void tipc_sk_timeout(struct timer_list *t) if (sock_owned_by_user(sk)) { sk_reset_timer(sk, &sk->sk_timer, jiffies + HZ / 20); bh_unlock_sock(sk); + sock_put(sk); return; } |