From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=172.105.4.254 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793908714; b=XbE8Xi2WJ25lxnO3ADeZn90IZjTp0c4tg63V5jmHKXkGCHspAyhWIAuVDQFKicou3o0k GKH4BOEat1LILmDBzODy+QJgfE5g0N3xaLsOpidSe8LWsci2GJMB11cA1ViPYJHhKZMmJ 4QjAWpxGxCpC3W94JtAX6Xl71F1IQIo+ygUE8Cf73bW/pMyRYILdrzbA1gL2VCZkkYtau 83y9ub6UhhkYMR4EdUtJxDc295e6v8HpGTQEkDmwwm9F6Ps95tNmbnGfiwtW19CdXpa6M qLI+EKtwDuQ3U/NaxqNsf0iKqqHaHM/+SkjaqP2Rfd9r/2ouuRfQ0/bP3QK7gKbOGAg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793908714; h=DMARC-Filter:Received:Received:DKIM-Signature:Message-ID:From: Subject:Reply-To:To:Cc:In-Reply-To:References:Content-Type: Content-Transfer-Encoding:Date; bh=Fu3D7KbVL0XALbxpOg/99/chjuCyMPlpg1MAOjhFXPQ=; b=yP6E9UgKtxU9GDH3TvFxEl4dRzUIzHWyucJ0eyYC8AqKr7q5A/7SPwwnUASdVoaZXyRQ uxeVU+tov5PezO4w2lOEZyhruCwtnT1knMZux19HezRYUEbRchANYbUu+nGu0XesQRCFw UaFcz1twXOns9R5Ir7eR5qkR2cpQnKUFfzpdFfndy+KXOn9Hp4i2RLjkzaWTha5xzJiVH yHL9zEzfiSpNwfWcImxNg+LPHCDCv7wQir2WtbmNfAMuYRBchpDHvUNQL3tixwaqj4d0U 2N6m2GQjB/XmlG9uhELTC4ETrAhJLvOmiw2yqmZbbR85goZ0picpggEnusKLWiTdPeg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=kernel.org; spf=pass smtp.mailfrom=kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=OumfSaDw; arc=none smtp.remote-ip=172.105.4.254 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 15EEE606B9E4 for ; Thu, 5 Nov 2026 19:58:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 15EEE606B9E4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=OumfSaDw Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 55894605EE; Thu, 5 Nov 2026 19:58:33 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2CA431F008A1; Thu, 5 Nov 2026 19:58:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793908713; bh=Fu3D7KbVL0XALbxpOg/99/chjuCyMPlpg1MAOjhFXPQ=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=OumfSaDwTNZBpGJOWzIaiT6pjsiHCqCuEdUaz66yitHN1nNu5txd4yS9N4qziqeuA jKo6oOvNVnrmW1Ld/SRNRJlyIoYW+xi575vQWaVzSfKh4Q6aHkYPJ0bu4ianMe/ryp FY85+WivxPFkJEXo69NxZ98f5CWKvFEwF7vR5O7X1Ds9ii4+w6KQI6rHKutuqKTC/5 PJGugGwCCkbyMgPLbKXpkZegV1ou950ZWOzXqy4ZhzEAo//gqm2NGT/LmV6GGVGIFw GkRGt05JBCoUhdhRlgBNsfNUA/ok0dXb29KIdwCOoyz5PlaaZL7x/S1TIIAEL/3HQI uTDOX6NycFX8g== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH RESEND v2 30/30] selftests/proc: check that unloading configs doesn't wait for a reader Reply-To: sashiko-reviews@lists.linux.dev To: "Christian Brauner" Cc: "Linus Torvalds" , "Jann Horn" , "Josef Bacik" , "Chris Mason" , "Jeff Layton" , NeilBrown , "Eric Dumazet" , "Thomas Gleixner" , "Al Viro" , "Jonathan Corbet" , "Christoph Hellwig" , "Greg Kroah-Hartman" , "Joel Granados" , "Kees Cook" , "Jan Kara" , "Jan Kara" , linux-s390@vger.kernel.org, coreteam@netfilter.org, kexec@lists.infradead.org, linux-pci@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-usb@vger.kernel.org, samba-technical@lists.samba.org, linux-m68k@lists.linux-m68k.org, linux-serial@vger.kernel.org, "Takashi Iwai" , linux-ext4@vger.kernel.org, "Chuck Lever" , tytso@mit.edu, "Heiko Carstens" , "Vasily Gorbik" , "Alexander Gordeev" , "Christian Borntraeger" In-Reply-To: <20261104-work-procfs-fs-v2-30-319e0f9a8aae@kernel.org> References: <20261104-work-procfs-fs-v2-0-319e0f9a8aae@kernel.org> <20261104-work-procfs-fs-v2-30-319e0f9a8aae@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 05 Nov 2026 19:58:29 +0000 X-Mailing-List: linux-m68k@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > Read /proc/config.gz into a buffer whose first page is backed by > userfaultfd and unload configs.ko while procfs copies what was read to > userspace: >=20 > - removing the entry doesn't wait for the reader >=20 > - the reader still gets the page that was read before the removal, and > nothing more >=20 > - and the next read fails with -EIO >=20 > The test loads configs.ko if it isn't there, skips if configs is built > in or can't be unloaded, and loads it again afterwards. It needs > CONFIG_IKCONFIG=3Dm. kselftest-merge keeps the =3Dy that other fragments > ask for, so it skips there. >=20 > Signed-off-by: Christian Brauner (Amutable) Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261104-work-procf= s-fs-v2-0-319e0f9a8aae@kernel.org?part=3D30