linux-kernel - [REGRESSION] Re: [PATCH 17/24] sched/fair: Implement delayed dequeue

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: <ZvA7n9GNoD-ipjkj@debian.local>
Date: Sun, 22 Sep 2024 16:45:35 +0100
From: Chris Bainbridge <chris.bainbridge@...il.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: linux-kernel@...r.kernel.org, bsegall@...gle.com,
	dietmar.eggemann@....com, efault@....de, juri.lelli@...hat.com,
	kprateek.nayak@....com, mgorman@...e.de, mingo@...hat.com,
	rostedt@...dmis.org, tglx@...utronix.de, vincent.guittot@...aro.org,
	vschneid@...hat.com, wuyun.abel@...edance.com,
	youssefesmat@...omium.org, spasswolf@....de,
	regressions@...ts.linux.dev
Subject: [REGRESSION] Re: [PATCH 17/24] sched/fair: Implement delayed dequeue

On Fri, Aug 30, 2024 at 02:34:56PM +0200, Bert Karwatzki wrote:
> Since linux next-20240820 the following messages appears when booting:
> 
> [    T1] smp: Bringing up secondary CPUs ...
> [    T1] smpboot: x86: Booting SMP configuration:
> [    T1] .... node  #0, CPUs:        #2  #4  #6  #8 #10 #12 #14  #1
> This is the line I'm concerend about:
> [    T1] psi: inconsistent task state! task=61:cpuhp/3 cpu=0 psi_flags=4 clear=0 set=4
> [    T1]   #3  #5  #7  #9 #11 #13 #15
> [    T1] Spectre V2 : Update user space SMT mitigation: STIBP always-on
> [    T1] smp: Brought up 1 node, 16 CPUs
> [    T1] smpboot: Total of 16 processors activated (102216.16 BogoMIPS)
> 
> I bisected this to commit 152e11f6df29 ("sched/fair: Implement delayed dequeue").
> Is this normal or is this something I should worry about?
> 
> Bert Karwatzki

I am also getting a similar error on boot, and bisected it to the same commit:

[    0.342931] psi: inconsistent task state! task=15:rcu_tasks_trace cpu=0 psi_flags=4 clear=0 set=4

#regzbot introduced: 152e11f6df293e816a6a37c69757033cdc72667d