[PATCH 4.19 134/168] net: Set fput_needed iff FDPUT_FPUT is set

Greg Kroah-Hartman
2020-08-17T17:36:49Z

From: Miaohe Lin <linmiaohe@huawei.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@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/socket.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/socket.c
+++ b/net/socket.c
@@ -474,7 +474,7 @@ 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);