linux-kernel - [PATCH 3/5] net: Set fput_needed iff FDPUT

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Date:   Thu, 6 Aug 2020 19:53:16 +0800
From:   linmiaohe <linmiaohe@...wei.com>
To:     <davem@...emloft.net>, <kuba@...nel.org>, <viro@...iv.linux.org.uk>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH 3/5] net: Set fput_needed iff FDPUT_FPUT is set

From: Miaohe Lin <linmiaohe@...wei.com>

We should fput() file iff FDPUT_FPUT is set. So we should set fput_needed
accordingly.

Fixes: 00e188ef6a7e ("sockfd_lookup_light(): switch to fdget^W^Waway from fget_light")
Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 net/socket.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/socket.c b/net/socket.c
index 6aff5aeb6728..ee9c9dac4728 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -500,7 +500,7 @@ static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed)
 	if (f.file) {
 		sock = sock_from_file(f.file, err);
 		if (likely(sock)) {
-			*fput_needed = f.flags;
+			*fput_needed = f.flags & FDPUT_FPUT;
 			return sock;
 		}
 		fdput(f);
-- 
2.19.1