linux-kernel - Re: stable: commit "cpuidle: menu: Avoid discarding useful information" causes regressions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAJZ5v0g7g7-WWTu=ZQwVAA345fodXer1ts422N0N+ZKx+6jXRw@mail.gmail.com>
Date: Wed, 15 Oct 2025 13:49:52 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Doug Smythies <dsmythies@...us.net>
Cc: Sergey Senozhatsky <senozhatsky@...omium.org>, "Rafael J. Wysocki" <rafael@...nel.org>, 
	Christian Loehle <christian.loehle@....com>, "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>, Sasha Levin <sashal@...nel.org>, 
	Daniel Lezcano <daniel.lezcano@...aro.org>, linux-pm@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Tomasz Figa <tfiga@...omium.org>, stable@...r.kernel.org
Subject: Re: stable: commit "cpuidle: menu: Avoid discarding useful
 information" causes regressions

On Wed, Oct 15, 2025 at 5:41 AM Doug Smythies <dsmythies@...us.net> wrote:
>
> On 2025.10.14 18:30 Sergey Senozhatsky wrote:
> > On (25/10/14 17:54), Rafael J. Wysocki wrote:
> >> Sergey, can you please run the workload under turbostat on the base
> >> 6.1.y and on 6.1.y with the problematic commit reverted and send the
> >> turbostat output from both runs (note: turbostat needs to be run as
> >> root)?
> >
> > Please find attached the turbostat logs for both cases.
>
> The turbostat data suggests that power limit throttling is involved.

Why do you think so?