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From: Juri Lelli <juri.lelli@redhat.com>
To: luca abeni <luca.abeni@santannapisa.it>
Cc: syzbot <syzbot+119ba87189432ead09b4@syzkaller.appspotmail.com>,
	bp@alien8.de, bristot@redhat.com, hpa@zytor.com,
	linux-kernel@vger.kernel.org, luto@kernel.org, mingo@redhat.com,
	peterz@infradead.org, syzkaller-bugs@googlegroups.com,
	tglx@linutronix.de, x86@kernel.org
Subject: Re: WARNING in enqueue_task_dl
Date: Mon, 7 Jan 2019 08:46:38 +0100	[thread overview]
Message-ID: <20190107074638.GC7213@localhost.localdomain> (raw)
In-Reply-To: <20190102101518.1d21ba0c@sweethome>

Hi,

On 02/01/19 10:15, luca abeni wrote:
> Hi all,
> (and, happy new year to everyone!)
> 
> this looks similar to a bug we have seen some time ago (a task
> switching from SCHED_OTHER to SCHED_DEADLINE while inheriting a
> deadline from a SCHED_DEADLINE task triggers the warning)...
> 
> Juri, I think you found a fix for such a bug; has it been committed?

Looks similar to the one I proposed this fix for:

https://lore.kernel.org/lkml/20181119153201.GB2119@localhost.localdomain/

AFAIK it hasn't been reviewed/tested yet. Could you (or someone) please
have a look?

Best,

- Juri

  reply	other threads:[~2019-01-07  7:46 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-18 18:49 WARNING in enqueue_task_dl syzbot
2018-11-19  8:23 ` Thomas Gleixner
2018-11-19 10:34   ` Peter Zijlstra
2018-11-19 12:07   ` luca abeni
2018-11-19 12:52     ` Peter Zijlstra
2018-11-19 13:43       ` Juri Lelli
2018-11-19 15:32         ` Juri Lelli
2019-01-07 16:19           ` Daniel Bristot de Oliveira
2019-02-07  9:35             ` Dmitry Vyukov
2019-07-24  4:45               ` Eric Biggers
2020-06-16  6:53                 ` Daniel Wagner
2020-06-16  8:20                   ` Peter Zijlstra
2020-06-23  7:19           ` [tip: sched/urgent] sched/core: Fix PI boosting between RT and DEADLINE tip-bot2 for Juri Lelli
2020-06-23  8:48           ` [tip: sched/urgent] sched/core: Fix PI boosting between RT and DEADLINE tasks tip-bot2 for Juri Lelli
2018-12-31 15:02 ` WARNING in enqueue_task_dl syzbot
2019-01-02  9:15   ` luca abeni
2019-01-07  7:46     ` Juri Lelli [this message]
2019-03-20 17:08 ` syzbot

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