linux-kernel - Re: [PATCH] exit: combine work under lock in synchronize_group_exit() and coredump_task

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Message-ID: <20250319184119.GE26879@redhat.com>
Date: Wed, 19 Mar 2025 19:41:20 +0100
From: Oleg Nesterov <oleg@...hat.com>
To: Mateusz Guzik <mjguzik@...il.com>
Cc: akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] exit: combine work under lock in
 synchronize_group_exit() and coredump_task_exit()

On 03/19, Mateusz Guzik wrote:
>
> This happens to test to for coredumping prior to handling kcov and
> kmsan, which afaics is harmless.
>
> I however was not comfortable lifting dumping prior to it, so it still
> happens after.

Well, I'd really prefer to move synchronize_group_exit(tsk, code) down,
after kmsan_task_exit() for the start.

Then the patch and resulting code will be simpler, coredump_task_exit()
can be even folded into synchronize_group_exit().

Oleg.