net: Set fput_needed iff FDPUT_FPUT is set

[ 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>

diff --git a/net/socket.c b/net/socket.c
index 6a5ec658fcd8350b02f5e70992c1badf2c05f40c..c74cfe1ee1699663329d5b1f54a4663dfcbd3c76 100644 (file)
--- a/net/socket.c
+++ b/net/socket.c
@@ -496,7 +496,7 @@ 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);