linux-kernel - [PATCH 4.9 152/212] net: Set fput_needed iff FDPUT

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Message-Id: <20200820091610.082971630@linuxfoundation.org>
Date:   Thu, 20 Aug 2020 11:22:05 +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, Miaohe Lin <linmiaohe@...wei.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.9 152/212] net: Set fput_needed iff FDPUT_FPUT is set

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

[ Upstream commit ce787a5a074a86f76f5d3fd804fa78e01bfb9e89 ]

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>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/socket.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/socket.c
+++ b/net/socket.c
@@ -498,7 +498,7 @@ static struct socket *sockfd_lookup_ligh
 	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);