linux-kernel - Re: [PATCH v6 2/3] sched: Move task_mm_cid

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Message-ID: <17bda9071b6962414f61668698fa840501819172.camel@redhat.com>
Date: Thu, 13 Feb 2025 14:25:01 +0100
From: Gabriele Monaco <gmonaco@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org, aubrey.li@...ux.intel.com,
 yu.c.chen@...el.com,  Andrew Morton <akpm@...ux-foundation.org>, Ingo
 Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>,  Ingo
 Molnar <mingo@...nel.org>, "Paul E. McKenney" <paulmck@...nel.org>, Shuah
 Khan <shuah@...nel.org>
Subject: Re: [PATCH v6 2/3] sched: Move task_mm_cid_work to mm delayed work

On Thu, 2025-02-13 at 14:52 +0800, kernel test robot wrote:
> kernel test robot noticed
> "WARNING:at_kernel/workqueue.c:#__queue_delayed_work" on:
> 
> [    2.640924][    T0] ------------[ cut here ]------------
> [ 2.641646][ T0] WARNING: CPU: 0 PID: 0 at kernel/workqueue.c:2495
> __queue_delayed_work (kernel/workqueue.c:2495 (discriminator 9)) 
> [    2.642874][    T0] Modules linked in:
> [    2.643381][    T0] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted
> 6.14.0-rc2-00002-g287adf9e9c1f #1
> [    2.644582][    T0] Hardware name: QEMU Standard PC (i440FX +
> PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
> [ 2.645943][ T0] RIP: 0010:__queue_delayed_work
> (kernel/workqueue.c:2495 (discriminator 9)) 

There seem to be major problems with this configuration, I'm trying to
understand what's wrong but, for the time being, this patchset is not
ready for inclusion.

Gabriele