netdev - Re: [PATCH v2 1/1] xfrm : lock input tasklet skb queue

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Date:   Tue, 29 Oct 2019 08:33:01 +0100
From:   Joerg Vehlow <lkml@...coder.de>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     Steffen Klassert <steffen.klassert@...unet.com>,
        Tom Rix <trix@...hat.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        herbert@...dor.apana.org.au, davem@...emloft.net,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1] xfrm : lock input tasklet skb queue


> On 2019-10-28 11:44:57 [+0100], Joerg Vehlow wrote:
>> I was unable to reproduce it with 5.2.21-rt13. Do you know if something
>> changed in network scheduling code or could it be just less likely?
> the softirq/BH handling has been rewritten in the v5.0-RT cycle,
> v5.0.19-rt11 to be exact. So if that the cause for it (which I hope)
> then you should be able to trigger the problem before that release and
> not later.
>
I testes again with 5.0.19-rt10 and 5.0.19-rt11  and I am pretty sure
the bug wasfixed by the changes in rt11. I was able to reproduce it with
rt10 within secondsand unable to reproduce it at all in several minutes on
rt11. Will 4.19 rt patches receive anymore updates? Is it possible to 
backport
the changes to softirq/BH habdling from 5.0.16-rt11 to 4.19?