From: Yuchung Cheng ycheng@google.com
[ Upstream commit 3976535af0cb9fe34a55f2ffb8d7e6b39a2f8188 ]
Previously there is an off-by-one bug on determining when to abort a stalled window-probing socket. This patch fixes that so it is consistent with tcp_write_timeout().
Signed-off-by: Yuchung Cheng ycheng@google.com Signed-off-by: Eric Dumazet edumazet@google.com Signed-off-by: Neal Cardwell ncardwell@google.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- net/ipv4/tcp_timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c index 61359944acc71..710cde1a5a832 100644 --- a/net/ipv4/tcp_timer.c +++ b/net/ipv4/tcp_timer.c @@ -336,7 +336,7 @@ static void tcp_probe_timer(struct sock *sk) return; }
- if (icsk->icsk_probes_out > max_probes) { + if (icsk->icsk_probes_out >= max_probes) { abort: tcp_write_err(sk); } else { /* Only send another probe if we didn't close things up. */