linux-kernel - Re: [powerpc][5.13.0-rc7] Kernel warning (kernel/sched/fair.c:401) while running LTP tests

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]

Date:   Mon, 21 Jun 2021 19:07:29 +0200
From:   Vincent Guittot <vincent.guittot@...aro.org>
To:     Odin Ugedal <odin@...d.al>
Cc:     Sachin Sant <sachinp@...ux.vnet.ibm.com>,
        open list <linux-kernel@...r.kernel.org>,
        linuxppc-dev@...ts.ozlabs.org,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [powerpc][5.13.0-rc7] Kernel warning (kernel/sched/fair.c:401)
 while running LTP tests

On Mon, 21 Jun 2021 at 18:45, Odin Ugedal <odin@...d.al> wrote:
>
> man. 21. jun. 2021 kl. 18:22 skrev Vincent Guittot <vincent.guittot@...aro.org>:
> > I would prefer that we use the reason of adding the cfs in the list instead.
> >
> > Something like the below should also fixed the problem. It is based on a
> > proposal I made to Rik sometimes ago when he tried to flatten the rq:
> > https://lore.kernel.org/lkml/20190906191237.27006-6-riel@surriel.com/
> >
> > This will ensure that a cfs is added in the list whenever one of its  child
> > is still in the list.
>
> Oh, yeah, that is a much more elegant solution! It fixes the issue as well!
>
> Feel free to add this when/if you submit it as a patch:
> Acked-by: Odin Ugedal <odin@...d.al>

Thanks

>
> Odin