From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 9A64C3B776A for ; Wed, 7 Oct 2026 11:53:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791374049; cv=none; b=IpzVHQntmV4Ul1/CP0AkfI/VTqsoPhEGU+7yn5qf9HbggbgSVfaq2sINt9IxahKbysYoU+M2eZuvhOebQW9CuCETVNBwMU8ZvdzOpho9Tod0GCd1LTAjH2BygtYBaYAdB5fJ23sX1efyl0yg5FPYIjaAISFnTaFEUzqWGbmfIZw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791374049; c=relaxed/simple; bh=ftCKWcVQ7vAkV2BmfAkpr5NrX/dCeaHWMu/XDURFV6M=; h=Message-ID:From:Subject:To:Cc:In-Reply-To:References:Content-Type: Date; b=a+dknw/sdUOlv8J7tjK4x9lBWRj7sOOjpjjL6L7YGiPuKsDLZ02Ohmj0rLbr6rx9/bR72vT8APC851Cse/leUnDMs3gf1Lbj7E83rqVk2QjnbSMA4/Q35eGaM9rG6lrsiYg1th59K/BaONdOl36/CXzqnGUcKNsf+bx3NibLHwE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cgqlkOno; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="cgqlkOno" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 040C61F0089F; Wed, 7 Oct 2026 11:53:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791374038; bh=ftCKWcVQ7vAkV2BmfAkpr5NrX/dCeaHWMu/XDURFV6M=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=cgqlkOnonYxk882uWW3N/Plc5E19h6ygrs9ib6BGOkodmGmmsJTMGXCH2I6s+rWnw dwEJjVePkcX7jBFx179ia9GnxiDfzKTLXieaa1sToAqMK/5/aOGBwfrEy1QEHNvNF9 SXO6bX/6mso8TIM0wngS+UqmcKMXGm9H0p0yKxfce77Je/wWLTPOYcFOLStWTw36uF IEJkNuasP/9qE7Y+9pm8cc1bNY2iFnNwH0zCyH5mEeW7SSe2pieytIY4O2xVL0+wo3 z5YqXAmeJqbyoGkFmzMuTObvh9Eb9lLOfMGI+ur3iuRDaXK5xzSthreqKrinh3cKKK bHw0J52uUPzjw== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v8 15/15] s390/mm: Lazy MMU mode sanitizer Reply-To: sashiko-reviews@lists.linux.dev To: "Alexander Gordeev" Cc: linux-s390@vger.kernel.org, "Vasily Gorbik" , "Christian Borntraeger" , "Heiko Carstens" , "Alexander Gordeev" In-Reply-To: <1890ee88ced60e0d03d88e681b7e6dde6a6158fa.1791365932.git.agordeev@linux.ibm.com> References: <1890ee88ced60e0d03d88e681b7e6dde6a6158fa.1791365932.git.agordeev@linux.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Wed, 07 Oct 2026 11:53:57 +0000 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > Detect PTE entries access in lazy MMU mode by means other > than set_pte() and ptep_get() primitives, which would be > a read hazard. >=20 > The access to kasan shadow memory from ptep_get_lockless() > mistakenly hits invalid access in case a concurrent lazy > MMU access to the same PTE is happening. To avoid that > disable instrumentation for ptep_get_lockless() altogether. >=20 > Suggested-by: Ilya Leoshkevich > Signed-off-by: Alexander Gordeev Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/cover.1791365932.gi= t.agordeev@linux.ibm.com?part=3D15