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Date:   Thu, 26 Aug 2021 12:08:56 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Sven Schnelle <svens@linux.ibm.com>
Cc:     linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org,
        hca@linux.ibm.com
Subject: Re: crash on s390 with SCHED_CORE=y
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On Thu, Aug 26, 2021 at 11:06:31AM +0200, Sven Schnelle wrote:
> [   25.044234]  [<00000001655b7534>] raw_spin_rq_lock_nested+0x5c/0xb8
> [   25.044241]  [<00000001655d2cfc>] online_fair_sched_group+0x9c/0x1c0
> [   25.044248]  [<00000001655e481c>] sched_autogroup_create_attach+0xdc/0x210

Does:

  https://lkml.kernel.org/r/162970967846.25758.333277155824309635.tip-bot2@tip-bot2

help?