[NET]: sockfd_lookup_light() returns random error for -EBADFD

This applies to 2.6.17-rc2.

There is a missing initialization of err in sockfd_lookup_light() that
could return random error for an invalid file handle.

Signed-off-by: Hua Zhong <hzhong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/socket.c b/net/socket.c
index 23898f4..0ce12df 100644 (file)
--- a/net/socket.c
+++ b/net/socket.c
@@ -490,6 +490,7 @@ static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed)
        struct file *file;
        struct socket *sock;
 
+       *err = -EBADF;
        file = fget_light(fd, fput_needed);
        if (file) {
                sock = sock_from_file(file, err);