From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from xry111.site (xry111.site [89.208.246.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 735B21754B for ; Sat, 12 Jul 2025 08:54:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=89.208.246.23 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752310469; cv=none; b=NyqqgSAUkVXc5ugm4XQWSsjv5etEInkAI/qV2g5Qt1snvJSUb+9Ub48qvqKiBGMJfDBZYt31Q82+DLpFtA05765Wdvze/rxJyW+Cn0GBp26cd39K5lmEbhVYHwhOldrzvwIfnCns9S4vp6hOr/zc5ANrZlpD9m9DoNx2rFDgeLU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752310469; c=relaxed/simple; bh=xZn+1tqQMBBxbYwmnsDfCKpNuwK9OnL2B8bBtLY/GFw=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=hWn7+dj5y621qOITXKsXrDNVzxAtbfDLJmfqLs++6kl8HYBCH6Z/wejWX5lCFT7JOKBPTmfy62a3paUYTKU8G0DmJa4XAsiHtoNJOyOXS+F5CXsnq2zZVc5fRZbupQiwZGvpyxrWek5bUo9R2C5WwMl+eV76GT1PeHKw58LFQHQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xry111.site; spf=pass smtp.mailfrom=xry111.site; dkim=pass (1024-bit key) header.d=xry111.site header.i=@xry111.site header.b=lEOiJPIl; arc=none smtp.client-ip=89.208.246.23 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xry111.site Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=xry111.site Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=xry111.site header.i=@xry111.site header.b="lEOiJPIl" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xry111.site; s=default; t=1752310465; bh=xZn+1tqQMBBxbYwmnsDfCKpNuwK9OnL2B8bBtLY/GFw=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=lEOiJPIl0ArA3F/97OQLJ2ndtZaUoudYM4wrBy6zSX+cnbEBH0msvp4izLalGp3Mu 4rthZw8k72ioGJgS/CE94f2rWz5BxFOJrlXMxMreKOQ8TYzr1/gUw9DdcnqJtcukW+ VkERItt2GrKKNnaUPtw+zpYxvmjIjOtl10QABklc= Received: from [127.0.0.1] (unknown [IPv6:2001:470:683e::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature ECDSA (secp384r1) server-digest SHA384) (Client did not present a certificate) (Authenticated sender: xry111@xry111.site) by xry111.site (Postfix) with ESMTPSA id 8E34F65997; Sat, 12 Jul 2025 04:54:19 -0400 (EDT) Message-ID: <984d89b10dca8e227b7b1a37e5a2fa2f8b260b9c.camel@xry111.site> Subject: Re: [PATCH v3] eventpoll: Fix priority inversion problem From: Xi Ruoyao To: linux-fsdevel@vger.kernel.org Cc: Nam Cao , Christian Brauner , Frederic Weisbecker , Valentin Schneider , Alexander Viro , Jan Kara , Sebastian Andrzej Siewior , John Ogness , Clark Williams , Steven Rostedt , linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev, linux-rt-users@vger.kernel.org, Joe Damato , Martin Karsten , Jens Axboe Date: Sat, 12 Jul 2025 16:54:15 +0800 In-Reply-To: <20250712000934.DwvOk7Hk@linutronix.de> References: <20250710062127.QnaeZ8c7@linutronix.de> <20250710083236.V8WA6EFF@linutronix.de> <20250711050217.OMtx7Cz6@linutronix.de> <20250711-ermangelung-darmentleerung-394cebde2708@brauner> <6856a981f0505233726af0301a1fb1331acdce1c.camel@xry111.site> <20250711095830.048P551B@linutronix.de> <7a50fd8af9d21aade901fe4d32e14e698378c82f.camel@xry111.site> <20250711122123.qXVK-EkF@linutronix.de> <20250712000934.DwvOk7Hk@linutronix.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2 Precedence: bulk X-Mailing-List: linux-rt-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Sat, 2025-07-12 at 02:09 +0200, Nam Cao wrote: > On Fri, Jul 11, 2025 at 08:09:12PM +0800, Xi Ruoyao wrote: > > And I'm afraid this may be a bug in my userspace... Then I'd feel guilt= y > > if this is reverted because of an invalid bug report from I :(. >=20 > FYI I just got a separate bug report. So something is definitely wrong wi= th > this patch. FTR Linus has reverted this patch after encountering the same issue at https://git.kernel.org/torvalds/c/5f02b80c21e1. --=20 Xi Ruoyao