netdev - Re: Soft lockup in inet_put

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Message-ID: <1481243432.4930.145.camel@edumazet-glaptop3.roam.corp.google.com>
Date:   Thu, 08 Dec 2016 16:30:32 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Josef Bacik <jbacik@...com>
Cc:     Hannes Frederic Sowa <hannes@...essinduktion.org>,
        Tom Herbert <tom@...bertland.com>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: Soft lockup in inet_put_port on 4.6

On Thu, 2016-12-08 at 16:36 -0500, Josef Bacik wrote:

> We can reproduce the problem at will, still trying to run down the 
> problem.  I'll try and find one of the boxes that dumped a core and get 
> a bt of everybody.  Thanks,

OK, sounds good.

I had a look and :
- could not spot a fix that came after 4.6. 
- could not spot an obvious bug.

Anything special in the program triggering the issue ?
SO_REUSEPORT and/or special socket options ?

Thanks.