netdev - Re: [PATCH net] tcp: tcp_probe: use spin_lock

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Date:   Tue, 14 Feb 2017 22:21:06 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     eric.dumazet@...il.com
Cc:     rnsanchez@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH net] tcp: tcp_probe: use spin_lock_bh()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 14 Feb 2017 17:11:14 -0800

> From: Eric Dumazet <edumazet@...gle.com>
> 
> tcp_rcv_established() can now run in process context.
> 
> We need to disable BH while acquiring tcp probe spinlock,
> or risk a deadlock.
> 
> Fixes: 5413d1babe8f ("net: do not block BH while processing socket backlog")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Reported-by: Ricardo Nabinger Sanchez <rnsanchez@...il.com>

Patch applied, thanks Eric.