From: Eric Dumazet
Date: Mon, 14 Aug 2017 17:44:43 -0700
> From: Eric Dumazet
>
> Filtering the ACK packet was not put at the right place.
>
> At this place, we already allocated a child and put it
> into accept queue.
>
> We absolutely need to call tcp_child_process() to release
> its spinlo
From: Eric Dumazet
Filtering the ACK packet was not put at the right place.
At this place, we already allocated a child and put it
into accept queue.
We absolutely need to call tcp_child_process() to release
its spinlock, or we will deadlock at accept() or close() time.
Found by syzkaller team
