From: Cong Wang <xiyou.wangc...@gmail.com>
Date: Thu, 2 Nov 2017 17:32:08 -0700
> Callers of tcf_block_put() could pass NULL so
> we can't use block->q before checking if block is
> NULL or not.
>
> tcf_block_put_ext() callers are fine, it is always
> non-NULL.
>
> Fixes: 8c4083b30e56 ("net: sched: add block bind/unbind notif. and extended
> block_get/put")
> Reported-by: Dave Taht <dave.t...@gmail.com>
> Cc: Jiri Pirko <j...@mellanox.com>
> Signed-off-by: Cong Wang <xiyou.wangc...@gmail.com>
Applied, thanks Cong.
