linux-kernel - [PATCH 5.7 045/244] cifs: prevent truncation from long to int in wait_for_free

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Date:   Mon, 20 Jul 2020 17:35:16 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Marshall Midden <marshallmidden@...il.com>,
        Ronnie Sahlberg <lsahlber@...hat.com>,
        Steve French <stfrench@...rosoft.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.7 045/244] cifs: prevent truncation from long to int in wait_for_free_credits

From: Ronnie Sahlberg <lsahlber@...hat.com>

[ Upstream commit 19e888678bac8c82206eb915eaf72741b2a2615c ]

The wait_event_... defines evaluate to long so we should not assign it an int as this may truncate
the value.

Reported-by: Marshall Midden <marshallmidden@...il.com>
Signed-off-by: Ronnie Sahlberg <lsahlber@...hat.com>
Signed-off-by: Steve French <stfrench@...rosoft.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/cifs/transport.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index c97570eb2c180..7fefd2bd111c4 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -528,7 +528,7 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits,
 		      const int timeout, const int flags,
 		      unsigned int *instance)
 {
-	int rc;
+	long rc;
 	int *credits;
 	int optype;
 	long int t;
-- 
2.25.1