linux-kernel - Re: [PATCH v3] eventpoll: Fix priority inversion problem

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Message-ID: <CAKQ1sVOYCFS6PD0u1yssDj3=8mDmi1K1Sfy930qYWeCfRuF_ZA@mail.gmail.com>
Date: Tue, 15 Jul 2025 11:37:05 +0200
From: Yann Ylavic <ylavic.dev@...il.com>
To: Nam Cao <namcao@...utronix.de>
Cc: Christian Brauner <brauner@...nel.org>, Linus Torvalds <torvalds@...ux-foundation.org>, 
	Xi Ruoyao <xry111@...111.site>, Frederic Weisbecker <frederic@...nel.org>, 
	Valentin Schneider <vschneid@...hat.com>, Alexander Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>, 
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>, John Ogness <john.ogness@...utronix.de>, 
	Clark Williams <clrkwllms@...nel.org>, Steven Rostedt <rostedt@...dmis.org>, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-rt-devel@...ts.linux.dev, linux-rt-users@...r.kernel.org, 
	Joe Damato <jdamato@...tly.com>, Martin Karsten <mkarsten@...terloo.ca>, Jens Axboe <axboe@...nel.dk>
Subject: Re: [PATCH v3] eventpoll: Fix priority inversion problem

On Mon, Jul 14, 2025 at 9:48 PM Nam Cao <namcao@...utronix.de> wrote:
>
> And my lesson is that lockless is hard. I still have no clue what is the
> bug in this patch.

Maybe this is related:
https://lore.kernel.org/all/20250704180804.3598503-1-shakeel.butt@linux.dev/
?


Regards;
Yann.