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 1A33640B102 for ; Mon, 17 Aug 2026 11:40:58 +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=1786966859; cv=none; b=fpxEGQLJ++HwhSB4O61ItuA2fnP8Gpg92T09TiInuRb0Wct5DRUo7SpExB9mjyJRg2+Uu1uOm5oLX7V88b7IrVHsGPr4veOLXQ1z3XDISiPF7OnD0oAKX/ikpjCIcWNnff8TcAlZ12EuHwzmOQP9S/mZAnn8UtzsqdwE2aB2qCU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786966859; c=relaxed/simple; bh=FPiZVFgF21PlJn4Do4wDyDCHucO379tGmu06yKFqFp8=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=HrF8jyMsR0hiy26SM+zKQWximcln7QO5QEiwNtJQtk3zYP23ymMNbQvwTjY8A6TyCnJ6JItc7JcasNtvwIXwdX0hGS8IpZCifP75kmtuwqp+n7Yxe193kquPenM2T/OAWX6qigh3xLbrxAePeTm49DJCHjGknToIt7q9Gc1a4PU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iiOAAc/D; 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="iiOAAc/D" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27AF01F000E9; Mon, 17 Aug 2026 11:40:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786966857; bh=FPiZVFgF21PlJn4Do4wDyDCHucO379tGmu06yKFqFp8=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=iiOAAc/DqPzWNtlkyz+iZFI1veJ4hpkLASYZDZnuVVoO6Hx/7tBjy84QRm/KOyFX+ JI2RxPF3OihV8C+llGjw7M8MLRWoXHPFpuOv9caHGXSy7LVNgITMBiDQRY+w/x6gFj ngvq99VVSuGgXTWabEbo0vTUj1sXKLAD4hiyul2ihnoWp56a6xzfYHYpK6DFIHcQrc V731S9uh35qZaJQVWna3m3xJFbb1ZF+FgG/Fr4pqweTn2hR+oRLHzTuSZz1YxgFB3J 4js0Bptu+DEkWggjD0Na6VRDDkEn6hPb+8h4J72u0DeFHKgJauP5EcIs9hx2N3kSNZ BbuGKqSaAKOpw== From: sashiko-bot@kernel.org Subject: Re: [PATCH v7 4/4] s390/mm: Lazy MMU mode sanitizer Reply-To: sashiko-reviews@lists.linux.dev To: "Alexander Gordeev" Cc: "Alexander Gordeev" , "Heiko Carstens" , linux-s390@vger.kernel.org, "Christian Borntraeger" , "Vasily Gorbik" In-Reply-To: <064436ca2fcc3221f12a37acd0a41d995a794cf7.1786956464.git.agordeev@linux.ibm.com> References: <064436ca2fcc3221f12a37acd0a41d995a794cf7.1786956464.git.agordeev@linux.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Mon, 17 Aug 2026 11:40:56 +0000 Message-Id: <20260817114057.27AF01F000E9@smtp.kernel.org> 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.1786956464.gi= t.agordeev@linux.ibm.com?part=3D4