netdev - Re: WARN_ON in TLP causing RT throttling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <7e05c738-8188-8cae-a726-33f780f6b05f@gmail.com>
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 ?