From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jakub Kicinski <kubakici@wp.pl>
Subject: Re: RCU callback crashes
Date: Tue, 19 Dec 2017 22:22:27 -0800
Message-ID: <20171219222227.402e684a@cakuba.netronome.com>
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        <20171220061118.GB1916@nanopsycho>
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Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
        Cong Wang <xiyou.wangcong@gmail.com>
To: Jiri Pirko <jiri@resnulli.us>
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On Wed, 20 Dec 2017 07:11:18 +0100, Jiri Pirko wrote:
> Wed, Dec 20, 2017 at 02:59:21AM CET, kubakici@wp.pl wrote:
> >Hi!
> >
> >If I run the netdevsim test long enough on a kernel with no debugging   
> 
> Just running tools/testing/selftests/bpf/test_offload.py?

Yes, like this:

while ./linux/tools/testing/selftests/bpf/test_offload.py --log /tmp/log; do echo; done

I usually crashes after ~10 minutes on my machine.

> >I get this:  
> 
> Could you try to run it with kasan on?

I didn't manage to reproduce it with KASAN on so far :(  Even enabling
object debugging to get the second splat in my email (which is more
useful) actually makes the crash go away, I only see the warning...