From: YueHaibing <yuehaib...@huawei.com> Date: Tue, 28 Apr 2020 16:12:08 +0800
> We should check null before do x25_neigh_put in x25_disconnect,
> otherwise may cause null-ptr-deref like this:
...
> Reported-by: syzbot+6db548b615e5aeefd...@syzkaller.appspotmail.com
> Fixes: 4becb7ee5b3d ("net/x25: Fix x25_neigh refcnt leak when x25 disconnect")
> Signed-off-by: YueHaibing <yuehaib...@huawei.com>
Applied.
