From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.9 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3642DC4727E for ; Thu, 1 Oct 2020 17:19:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EB2E720872 for ; Thu, 1 Oct 2020 17:19:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="gYcO3CjT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732866AbgJARTh (ORCPT ); Thu, 1 Oct 2020 13:19:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732213AbgJARTh (ORCPT ); Thu, 1 Oct 2020 13:19:37 -0400 Received: from mail-wr1-x444.google.com (mail-wr1-x444.google.com [IPv6:2a00:1450:4864:20::444]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22247C0613D0 for ; Thu, 1 Oct 2020 10:19:37 -0700 (PDT) Received: by mail-wr1-x444.google.com with SMTP id g4so6721817wrs.5 for ; Thu, 01 Oct 2020 10:19:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=841G/mTiLV3Ld9kFkAJj5hFI/sTrvUOlTE4BhfWwZTU=; b=gYcO3CjTcL78262zFp/LcACcoQr5ajLuUus56hT6ZoiWBH+WkzZTJ9xoW9Now/eI11 nqnTfk9gMXirD/bOJjQa2EK/Wgsx8tMWZmxnoKwd4nPFjotTL3/Vbo3UXJhUz8DIQdhc TCQFkuT+dkM8x/EozremdPpueAJ0648JQMTICZT7LvHlkKKMmscwOHGByKwLVGtaaMVP EdhCfnWP0ThzZNiVLziqGewAU1bzPGIwWHom/uMNLMhJZEu5mNjMkfKWFonlV5tYpfrY IjAJ45W3jYdXecqUcAb/JbDl+u6OGQ6fz92MblhqqRXodjUS/z06We8z+1nJNQXEElIX C/fw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=841G/mTiLV3Ld9kFkAJj5hFI/sTrvUOlTE4BhfWwZTU=; b=aubfmZKYe8hByCOsE2huixfzw0hqT/dLkv1VU9OqxPs6+IFO0FaZQCzD3E1E8jyVoB x3p5PcIfHBaBwQ6bDgdPoA1oSltUZYJt6royL7TXXJLKkQEGZ0oGYeqk/elHcYlSVebc JzhEVCSf6hgkGS2zl1HaBIxEe2pN5NWrQEMEj1sal2ABwNOqe/y/t3ataqWJoPK6/6we JUG8tmxGilHfsecoHB8nu5M25Pt6DIhEg4/BGS4yDxB+8DMSr6bKOQ6Cj1q+GlwglMuP s42Itdrq/OjsbINxx/mUQXRhYv7fbgFv/QnvlTHihcYOgXeZbYPa9oVMNB3NHQPWOHDb C+xg== X-Gm-Message-State: AOAM532mfN/S6OURRQ2hMF4KJ0PO1PVFTLyxgDup5PT5htSiUjmfR7Pc FCfunS/qMnCZgMyv1or/02to9A== X-Google-Smtp-Source: ABdhPJzSgZ4/iTARNaTrtpwUQiHNHSeUnlfyb3XTlzXdTKq9BC1X0COHiSoGkL6Edra4NbtsPX+FMg== X-Received: by 2002:adf:f802:: with SMTP id s2mr9774230wrp.328.1601572775654; Thu, 01 Oct 2020 10:19:35 -0700 (PDT) Received: from elver.google.com ([100.105.32.75]) by smtp.gmail.com with ESMTPSA id v2sm951415wme.19.2020.10.01.10.19.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Oct 2020 10:19:34 -0700 (PDT) Date: Thu, 1 Oct 2020 19:19:28 +0200 From: elver@google.com To: Andrey Konovalov Cc: Dmitry Vyukov , Vincenzo Frascino , Catalin Marinas , kasan-dev@googlegroups.com, Andrey Ryabinin , Alexander Potapenko , Evgenii Stepanov , Elena Petrova , Branislav Rankov , Kevin Brodsky , Will Deacon , Andrew Morton , linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 02/39] kasan: KASAN_VMALLOC depends on KASAN_GENERIC Message-ID: <20201001171928.GB4156371@elver.google.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.14.5 (2020-06-23) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 25, 2020 at 12:50AM +0200, Andrey Konovalov wrote: > Currently only generic KASAN mode supports vmalloc, reflect that > in the config. > > Signed-off-by: Andrey Konovalov > Signed-off-by: Vincenzo Frascino Reviewed-by: Marco Elver > --- > Change-Id: I1889e5b3bed28cc5d607802fb6ae43ba461c0dc1 > --- > lib/Kconfig.kasan | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan > index 047b53dbfd58..e1d55331b618 100644 > --- a/lib/Kconfig.kasan > +++ b/lib/Kconfig.kasan > @@ -156,7 +156,7 @@ config KASAN_SW_TAGS_IDENTIFY > > config KASAN_VMALLOC > bool "Back mappings in vmalloc space with real shadow memory" > - depends on HAVE_ARCH_KASAN_VMALLOC > + depends on KASAN_GENERIC && HAVE_ARCH_KASAN_VMALLOC > help > By default, the shadow region for vmalloc space is the read-only > zero page. This means that KASAN cannot detect errors involving > -- > 2.28.0.681.g6f77f65b4e-goog >