linux-kernel - Re: [PATCH] exec: do not call sched_mm_cid_after

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Message-ID: <4b221d91-84f8-4600-83b6-a2aa16a02c57@efficios.com>
Date: Wed, 24 Dec 2025 08:52:16 -0500
From: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To: Jinchao Wang <wangjinchao600@...il.com>,
 Alexander Viro <viro@...iv.linux.org.uk>,
 Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
 Kees Cook <kees@...nel.org>, linux-fsdevel@...r.kernel.org,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] exec: do not call sched_mm_cid_after_execve() on exec
 fail

On 2025-12-24 07:10, Jinchao Wang wrote:
> On Thu, Dec 18, 2025 at 11:23:23AM +0800, Jinchao Wang wrote:
> 
> Hi, mathieu
> 
> Please review this patch for mm_cid.

Nack. Your fix lacks context and removes a needed call in the
common case to fix what I understand to be a init task issue.

See this patch instead which addresses an issue very similar to
yours removing the relevant sched_mm_cid_after_exec() call:

https://lore.kernel.org/lkml/20251223215113.639686-1-xiyou.wangcong@gmail.com/

I added Thomas Gleixner in CC.

Thanks,

Mathieu

-- 
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com