netdev - Re: WARN_ON in TLP causing RT throttling

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Date:   Thu, 27 Sep 2018 17:25:53 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     stranche@...eaurora.org, Yuchung Cheng <ycheng@...gle.com>
Cc:     Eric Dumazet <eric.dumazet@...il.com>, soheil@...gle.com,
        netdev@...r.kernel.org
Subject: Re: WARN_ON in TLP causing RT throttling



On 09/27/2018 05:16 PM, stranche@...eaurora.org wrote:

> Hi Yuchung,
> 
> Based on the dumps we were able to get, it appears that TFO was not used in this case.
> We also tried some local experiments where we dropped incoming SYN packets after already
> successful TFO connections on the receive side to see if TFO would trigger this scenario, but
> have not been able to reproduce it.
> 
> One other interesting thing we found is that the socket never sent or received any data. It only
> sent/received the packets for the initial handshake and the outgoing FIN.

Just to make sure : Was this some sort of syzkaller (or other fuzzer) run ?