From: Eric Dumazet
Date: Mon, 1 Oct 2018 23:24:26 -0700
> syzkaller was able to hit the WARN_ON(sock_owned_by_user(sk));
> in tcp_close()
>
> While a socket is being closed, it is very possible other
> threads find it in rtnetlink dump.
>
> tcp_get_info() will acquire the socket lock for a sho
syzkaller was able to hit the WARN_ON(sock_owned_by_user(sk));
in tcp_close()
While a socket is being closed, it is very possible other
threads find it in rtnetlink dump.
tcp_get_info() will acquire the socket lock for a short amount
of time (slow = lock_sock_fast(sk)/unlock_sock_fast(sk, slow);)
