tree f006f46f881823faaa069d4261ebf6bd9cc1265f
parent 57361846b52bc686112da6ca5368d11210796804
author Ilya Dryomov <idryomov@gmail.com> 1535117563 +0200
committer Ilya Dryomov <idryomov@gmail.com> 1536243484 +0200

ceph: avoid a use-after-free in ceph_destroy_options()

syzbot reported a use-after-free in ceph_destroy_options(), called from
ceph_mount().  The problem was that create_fs_client() consumed the opt
pointer on some errors, but not on all of them.  Make sure it always
consumes both libceph and ceph options.

Reported-by: syzbot+8ab6f1042021b4eed062@syzkaller.appspotmail.com
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>