[PATCH 5.16 0635/1017] tipc: fix the timer expires after interval 100ms

From: Greg Kroah-Hartman
Date: Tue Apr 05 2022 - 09:08:58 EST

From: Hoang Le <hoang.h.le@xxxxxxxxxxxxxx>

[ Upstream commit 6a7d8cff4a3301087dd139293e9bddcf63827282 ]

In the timer callback function tipc_sk_timeout(), we're trying to
reschedule another timeout to retransmit a setup request if destination
link is congested. But we use the incorrect timeout value
(msecs_to_jiffies(100)) instead of (jiffies + msecs_to_jiffies(100)),
so that the timer expires immediately, it's irrelevant for original

In this commit we correct the timeout value in sk_reset_timer()

Fixes: 6787927475e5 ("tipc: buffer overflow handling in listener socket")
Acked-by: Ying Xue <ying.xue@xxxxxxxxxxxxx>
Signed-off-by: Hoang Le <hoang.h.le@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220321042229.314288-1-hoang.h.le@xxxxxxxxxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
net/tipc/socket.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 7545321c3440..17f8c523e33b 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -2852,7 +2852,8 @@ static void tipc_sk_retry_connect(struct sock *sk, struct sk_buff_head *list)

/* Try again later if dest link is congested */
if (tsk->cong_link_cnt) {
- sk_reset_timer(sk, &sk->sk_timer, msecs_to_jiffies(100));
+ sk_reset_timer(sk, &sk->sk_timer,
+ jiffies + msecs_to_jiffies(100));
/* Prepare SYN for retransmit */