linux-kernel - Re: [PATCH 6.12 000/122] 6.12.11-rc1 review

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: <20250122105949.GK7145@noisy.programming.kicks-ass.net>
Date: Wed, 22 Jan 2025 11:59:49 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Arnd Bergmann <arnd@...db.de>
Cc: Naresh Kamboju <naresh.kamboju@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, patches@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Guenter Roeck <linux@...ck-us.net>, shuah <shuah@...nel.org>,
	patches@...nelci.org, lkft-triage@...ts.linaro.org,
	Pavel Machek <pavel@...x.de>, Jon Hunter <jonathanh@...dia.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>, srw@...dewatkins.net,
	rwarsow@....de, Conor Dooley <conor@...nel.org>,
	hargar@...rosoft.com, Mark Brown <broonie@...nel.org>,
	Anders Roxell <anders.roxell@...aro.org>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Dan Carpenter <dan.carpenter@...aro.org>
Subject: Re: [PATCH 6.12 000/122] 6.12.11-rc1 review

On Wed, Jan 22, 2025 at 11:56:13AM +0100, Arnd Bergmann wrote:
> On Wed, Jan 22, 2025, at 11:04, Naresh Kamboju wrote:
> > On Tue, 21 Jan 2025 at 23:28, Greg Kroah-Hartman
> > <gregkh@...uxfoundation.org> wrote:
> 
> > 0000000000000000
> > <4>[  160.712071] Call trace:
> > <4>[ 160.712597] place_entity (kernel/sched/fair.c:5250 (discriminator 1))
> > <4>[ 160.713221] reweight_entity (kernel/sched/fair.c:3813)
> > <4>[ 160.713802] update_cfs_group (kernel/sched/fair.c:3975 (discriminator 1))
> > <4>[ 160.714277] dequeue_entities (kernel/sched/fair.c:7091)
> > <4>[ 160.714903] dequeue_task_fair (kernel/sched/fair.c:7144 (discriminator 1))
> > <4>[ 160.716502] move_queued_task.isra.0 (kernel/sched/core.c:2437
> > (discriminator 1))
> 
> I don't see anything that immediately sticks out as causing this,
> but I do see five scheduler patches backported in stable-rc
> on top of v6.12.8, these are the original commits:
> 
> 66951e4860d3 ("sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE")

This one reworks reweight_entity(), but I've been running with that on
top of 13-rc6 for a week or so and not seen this.