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From: Mat Martineau <mathew.j.martineau@linux.intel.com>
To: netdev@vger.kernel.org
Cc: Matthieu Baerts <matthieu.baerts@tessares.net>,
	davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com,
	mptcp@lists.linux.dev, Dan Carpenter <dan.carpenter@oracle.com>,
	Mat Martineau <mathew.j.martineau@linux.intel.com>
Subject: [PATCH net-next] mptcp: fix 'masking a bool' warning
Date: Fri, 25 Jun 2021 14:25:22 -0700	[thread overview]
Message-ID: <20210625212522.264000-1-mathew.j.martineau@linux.intel.com> (raw)

From: Matthieu Baerts <matthieu.baerts@tessares.net>

Dan Carpenter reported an issue introduced in
commit fde56eea01f9 ("mptcp: refine mptcp_cleanup_rbuf") where a new
boolean (ack_pending) is masked with 0x9.

This is not the intention to ignore values by using a boolean. This
variable should not have a 'bool' type: we should keep the 'u8' to allow
this comparison.

Fixes: fde56eea01f9 ("mptcp: refine mptcp_cleanup_rbuf")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
---
 net/mptcp/protocol.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index ce0c45dfb79e..7bb82424e551 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -455,7 +455,7 @@ static void mptcp_subflow_cleanup_rbuf(struct sock *ssk)
 static bool mptcp_subflow_could_cleanup(const struct sock *ssk, bool rx_empty)
 {
 	const struct inet_connection_sock *icsk = inet_csk(ssk);
-	bool ack_pending = READ_ONCE(icsk->icsk_ack.pending);
+	u8 ack_pending = READ_ONCE(icsk->icsk_ack.pending);
 	const struct tcp_sock *tp = tcp_sk(ssk);
 
 	return (ack_pending & ICSK_ACK_SCHED) &&
-- 
2.32.0


             reply	other threads:[~2021-06-25 21:25 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-25 21:25 Mat Martineau [this message]
2021-06-28  8:22 ` Paolo Abeni
2021-06-28 20:10 ` patchwork-bot+netdevbpf

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