linux-kernel - Re: Fwd: High cpu usage caused by kernel process when upgraded to linux 5.19.17 or later

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] [day] [month] [year] [list]

Message-ID: <37c2c8ee-d909-413d-9cf7-e67efd7fdb30@leemhuis.info>
Date:   Fri, 20 Oct 2023 12:55:57 +0200
From:   "Linux regression tracking #update (Thorsten Leemhuis)" 
        <regressions@...mhuis.info>
To:     Linux Regressions <regressions@...ts.linux.dev>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Netfilter Development <netfilter-devel@...r.kernel.org>,
        Netfilter Core Developers <coreteam@...filter.org>,
        Linux Networking <netdev@...r.kernel.org>,
        Linux Power Management <linux-pm@...r.kernel.org>
Subject: Re: Fwd: High cpu usage caused by kernel process when upgraded to
 linux 5.19.17 or later

[TLDR: This mail in primarily relevant for Linux kernel regression
tracking. See link in footer if these mails annoy you.]

On 23.06.23 02:58, Bagas Sanjaya wrote:
> 
> I notice a regression report on Bugzilla [1]. Quoting from it:
> 
>> kernel process "kworker/events_power_efficient" uses a lot of cpu power (100% on ESXI 6.7, ~30% on ESXI 7.0U3 or later) after upgrading from 5.17.3 to 5.19.17 or later.
> [...]
> #regzbot introduced: v5.17.3..v5.19.17 https://bugzilla.kernel.org/show_bug.cgi?id=217586
> #regzbot title: kworker/events_power_efficient utilizes full CPU power after kernel upgrade
> 
> Thanks.
> 
> [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217586

#regzbot resolve: afaics: misconfiguration became more problematic due
to new mitigations
#regzbot ignore-activity

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
That page also explains what to do if mails like this annoy you.