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=-17.4 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_IN_DEF_DKIM_WL autolearn=unavailable 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 B42EBC5517A for ; Wed, 11 Nov 2020 15:53:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 323E320709 for ; Wed, 11 Nov 2020 15:53:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="eNIdoik2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727446AbgKKPxP (ORCPT ); Wed, 11 Nov 2020 10:53:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725995AbgKKPxO (ORCPT ); Wed, 11 Nov 2020 10:53:14 -0500 Received: from mail-qk1-x744.google.com (mail-qk1-x744.google.com [IPv6:2607:f8b0:4864:20::744]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 037F7C0613D1 for ; Wed, 11 Nov 2020 07:53:13 -0800 (PST) Received: by mail-qk1-x744.google.com with SMTP id u4so2054605qkk.10 for ; Wed, 11 Nov 2020 07:53:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=vRyAuwdRnLChBCBVFGTKtTcLQ1KujUMWRxgegUE/csw=; b=eNIdoik2auBvbeQYmWPz0kJqW6IQFCpCkajeE2HOzgsScRJC2MtR3ebHwzbvOlZYDE kQwHYAigewhLNATkbarT7JhAny9sC0sDqb35ofvQfTMYnI/WAX36P2tyYfGWOKh/GT8y 1vzpcmB6OaCYQNU40d5y7o0OiASJZtPSKdfLP+i0EfaQT1pzfhXXpU3NB0ST+RlRSE5s RstTZaaIpTclcDobVyw3Zliym8vOVH4vY6sCM/gPIxogmxPl1osALQSxUoX2YX/T/9h4 gD//4L9L9ybqoB6Xz9FkoN9OOheZ1VOWo3bazsSTyxtb0ry9ijPIcKi3pYcvLa3G4NBE o/bA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=vRyAuwdRnLChBCBVFGTKtTcLQ1KujUMWRxgegUE/csw=; b=PYkeAiV52nlJfwOTmjOlQc0itbrQn8Eybr0wdHJoB9oBZAZJrSa4vYZpyCCSV6fGQJ TrVIqQf3XG/jaSK91wKE3qtvt3J8+dhEXLzaxkks3ztfftizd9yFfhkj+XH+NpK36EaO d5RMGsmanVmUZoFLafPF+wkg5GPtC2Q6+59UPUehprnPqgZWTTrtxUxLGfDKp2lnQa5n VxSAcSNzWDTHXNzbp4d8HU+jGlPsS/rTL3NEhaYLc/uI9KPc3WUDNaE+bQ346LeWFUuE sHK9JgyEu8RFXKeUng8jDgOTckM6uNVO7wEVQDwnoR2A0w8mj1LkMxYh3G3iB9roDVpa Ijmg== X-Gm-Message-State: AOAM533clQTqoPlEA+ajmUBKXdYAwjRLQtSntAoKGTwiPAIz9E2niqz0 tuKubDZvCkR7h5pIBNWJdlsfP9V54Lm+Nomo+DXVmg== X-Google-Smtp-Source: ABdhPJxNlfRr+d27x7ds3kYfz4Vaet62rX3/WapVLgoXO9ea4Taf/i/gwJ+XXy7eFkysWRMoTyt8gfP91CUOFe7vd9U= X-Received: by 2002:a37:bf04:: with SMTP id p4mr26719528qkf.326.1605109991955; Wed, 11 Nov 2020 07:53:11 -0800 (PST) MIME-Version: 1.0 References: <67c17dafa28036b628234c8f1d88368af374449c.1605046192.git.andreyknvl@google.com> In-Reply-To: <67c17dafa28036b628234c8f1d88368af374449c.1605046192.git.andreyknvl@google.com> From: Alexander Potapenko Date: Wed, 11 Nov 2020 16:52:59 +0100 Message-ID: Subject: Re: [PATCH v9 24/44] kasan, arm64: don't allow SW_TAGS with ARM64_MTE To: Andrey Konovalov Cc: Catalin Marinas , Will Deacon , Vincenzo Frascino , Dmitry Vyukov , Andrey Ryabinin , Marco Elver , Evgenii Stepanov , Branislav Rankov , Kevin Brodsky , Andrew Morton , kasan-dev , Linux ARM , Linux Memory Management List , LKML Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 10, 2020 at 11:12 PM 'Andrey Konovalov' via kasan-dev wrote: > > Software tag-based KASAN provides its own tag checking machinery that > can conflict with MTE. Don't allow enabling software tag-based KASAN > when MTE is enabled. > > Signed-off-by: Andrey Konovalov > Signed-off-by: Vincenzo Frascino > Reviewed-by: Catalin Marinas Reviewed-by: Alexander Potapenko > --- > Change-Id: Icd29bd0c6b1d3d7a0ee3d50c20490f404d34fc97 > --- > arch/arm64/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index 1515f6f153a0..25ead11074bf 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -134,7 +134,7 @@ config ARM64 > select HAVE_ARCH_JUMP_LABEL > select HAVE_ARCH_JUMP_LABEL_RELATIVE > select HAVE_ARCH_KASAN if !(ARM64_16K_PAGES && ARM64_VA_BITS_48) > - select HAVE_ARCH_KASAN_SW_TAGS if HAVE_ARCH_KASAN > + select HAVE_ARCH_KASAN_SW_TAGS if (HAVE_ARCH_KASAN && !ARM64_MTE) > select HAVE_ARCH_KGDB > select HAVE_ARCH_MMAP_RND_BITS > select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT > -- > 2.29.2.222.g5d2a92d10f8-goog > > -- > You received this message because you are subscribed to the Google Groups= "kasan-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an= email to kasan-dev+unsubscribe@googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/msgi= d/kasan-dev/67c17dafa28036b628234c8f1d88368af374449c.1605046192.git.andreyk= nvl%40google.com. --=20 Alexander Potapenko Software Engineer Google Germany GmbH Erika-Mann-Stra=C3=9Fe, 33 80636 M=C3=BCnchen Gesch=C3=A4ftsf=C3=BChrer: Paul Manicle, Halimah DeLaine Prado Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg