cifs: fix CIFS_IOC_GET_MNT_INFO oops

commit d8a6e505d6 upstream.

An open directory may have a NULL private_data pointer prior to readdir.

Fixes: 0de1f4c6f6 ("Add way to query server fs info for smb3")
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Disseldorp 2017-05-04 00:41:13 +02:00 • committed by Greg Kroah-Hartman
commit 6f3b2eed8c