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

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Message-ID: <7a50fd8af9d21aade901fe4d32e14e698378c82f.camel@xry111.site>
Date: Fri, 11 Jul 2025 20:09:12 +0800
From: Xi Ruoyao <xry111@...111.site>
To: Nam Cao <namcao@...utronix.de>
Cc: Christian Brauner <brauner@...nel.org>, 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 Fri, 2025-07-11 at 11:58 +0200, Nam Cao wrote:
> On Fri, Jul 11, 2025 at 05:48:56PM +0800, Xi Ruoyao wrote:
> > Sadly, still no luck.
> 
> That's unfortunate.
> 
> I'm still unable to reproduce the issue, so all I can do is staring at the
> code and guessing. But I'm out of idea for now.

Same as I.  I tried to reproduce in a VM running Fedora Rawhide but
failed.

> This one is going to be hard to figure out..

And I'm afraid this may be a bug in my userspace... Then I'd feel guilty
if this is reverted because of an invalid bug report from I :(.

-- 
Xi Ruoyao <xry111@...111.site>