From: Guenter Roeck <linux@roeck-us.net>
To: Thomas Gleixner <tglx@linutronix.de>, Phil Auld <pauld@redhat.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>,
Henning Schild <henning.schild@siemens.com>,
Peter Zijlstra <peterz@infradead.org>,
x86@kernel.org, linux-kernel@vger.kernel.org,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
xenomai@xenomai.org, guocai.he.cn@windriver.com
Subject: Re: sched: Unexpected reschedule of offline CPU#2!
Date: Sun, 20 Jul 2025 07:14:03 -0700 [thread overview]
Message-ID: <cae6517d-9580-424b-8d1d-c9bfcdffb73c@roeck-us.net> (raw)
In-Reply-To: <87a54zuojn.ffs@tglx>
On 7/20/25 03:47, Thomas Gleixner wrote:
> On Sat, Jul 19 2025 at 23:17, Thomas Gleixner wrote:
>> On Wed, Jul 09 2025 at 09:44, Phil Auld wrote:
>>> Hi Thomas,
>>>
>>> On Tue, Sep 03, 2024 at 05:27:58PM +0200 Thomas Gleixner wrote:
>>>> On Tue, Jul 27 2021 at 10:46, Jan Kiszka wrote:
>>>>
>>>> Picking up this dead thread again.
>>>
>>> Necro-ing this again...
>>>
>>> I keep getting occasional reports of this case. Unfortunately
>>> though, I've never been able to reproduce it myself.
>>>
>>> Did the below patch ever go anywhere?
>>
>> Nope. Guocai said it does not work and I have no reproducer either to
>> actually look at it deeper and there was further debug data provided.
>
> Obviously:
>
> no further debug data was provided, so I can only tap in the
> dark.
>
FWIW, I have not seen this problem for a long time. I know it existed in
5.10, and I can find logs showing the problem in my company's bug system,
but only for 5.10 and older kernels. I don't see it in my test system either,
not even for 5.4.y or 5.10.y kernels.
Guenter
next prev parent reply other threads:[~2025-07-20 14:14 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-27 16:44 Guenter Roeck
2019-07-29 9:35 ` Peter Zijlstra
2019-07-29 9:58 ` Thomas Gleixner
2019-07-29 10:13 ` Peter Zijlstra
2019-07-29 10:38 ` Thomas Gleixner
2019-07-29 10:47 ` Peter Zijlstra
2019-07-29 20:50 ` Guenter Roeck
2019-08-16 10:22 ` Thomas Gleixner
2019-08-16 19:32 ` Guenter Roeck
2019-08-17 20:21 ` Thomas Gleixner
2021-07-27 8:00 ` Henning Schild
2021-07-27 8:46 ` Jan Kiszka
2024-09-03 6:15 ` guocai.he.cn
2024-09-03 15:27 ` Thomas Gleixner
2024-09-04 7:46 ` guocai he
2024-09-18 1:50 ` My branch is v5.2/standard/preempt-rt/intel-x86 and I make a patch according guocai.he.cn
2024-09-18 2:59 ` [PATCH] patch for poweroff guocai.he.cn
2025-07-09 13:44 ` sched: Unexpected reschedule of offline CPU#2! Phil Auld
2025-07-19 21:17 ` Thomas Gleixner
2025-07-20 10:47 ` Thomas Gleixner
2025-07-20 14:14 ` Guenter Roeck [this message]
2025-07-28 13:13 ` Phil Auld
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