linux-kernel - Re: WARNING at kernel/sched/core.c:2013 migration_cpu

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Message-ID: <9fca17b11bdf298d43bd4789f61f90ef@natalenko.name>
Date:   Mon, 16 Nov 2020 11:31:53 +0100
From:   Oleksandr Natalenko <oleksandr@...alenko.name>
To:     Valentin Schneider <valentin.schneider@....com>
Cc:     linux-rt-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org
Subject: Re: WARNING at kernel/sched/core.c:2013
 migration_cpu_stop+0x2e3/0x330

On 16.11.2020 11:27, Oleksandr Natalenko wrote:
> Not sure whether the check is legitimate, but FWIW I've managed to put
> a test task [1] (it spawns a lot of threads and applies affinity) into
> a permanent unkillable D state here:

Just to make it clear: I neither applied your patch nor saw a splat this 
time, just a D state only.

-- 
   Oleksandr Natalenko (post-factum)