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=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 0C3F2C4741F for ; Thu, 29 Oct 2020 20:01:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9DFFF20782 for ; Thu, 29 Oct 2020 20:01:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="iMDTwDLe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726356AbgJ2UA6 (ORCPT ); Thu, 29 Oct 2020 16:00:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726064AbgJ2UAu (ORCPT ); Thu, 29 Oct 2020 16:00:50 -0400 Received: from mail-pf1-x443.google.com (mail-pf1-x443.google.com [IPv6:2607:f8b0:4864:20::443]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5EE5DC0613D2 for ; Thu, 29 Oct 2020 13:00:50 -0700 (PDT) Received: by mail-pf1-x443.google.com with SMTP id c20so3253053pfr.8 for ; Thu, 29 Oct 2020 13:00:50 -0700 (PDT) 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; bh=lCP1WO1+VHzaoW6B3s0gmUP2QnpBjOsDZXHhfza/ed8=; b=iMDTwDLekHKm2kQfUw61OXhU4hv2TL3TfsFBwe0mJNO4y8ryLBGRm4NP8gPS1ptNNi 2UBqD0A+kYcmo2GaqCAIUiRBemjZqKbLb4zYxzsqBTZ3R1q5kKSUJTBkbgRL5wXuGy16 Nw5lkLNmpAY1+ijcd4JMdBxZKVDKHagbuTI/qV4tWM4wgZMjCkqOd6DmZ/yIgA0sV8EA 2HKhL0PXWZzMDvCJjYpJCJNCA0LoOilEU84xno560sBrevL2uDsZtdwD3VOnVgRlYw4f Jqv4RDQ0zswFqUpFu1xhtwI2Fq8M0okebXZNgYib+IM8ZMiBdpM0sXVJkFAcl6dDbAa3 IMYQ== 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; bh=lCP1WO1+VHzaoW6B3s0gmUP2QnpBjOsDZXHhfza/ed8=; b=WJhOI/ZnbCEZCR2GhInfW3FBIl+K5DqXHYBjykha9iutgI+57Ibie+wxBhx9M+pYOS 9kx5VsczQ49Usk2MFnScfli4ciCGEqLFNRifDfUx4ttTpQgLuUQdIFmYyF+MEI6M0squ ne5ScCowjNQjXpmHSAKBJtKatr/odbHRXkikwI4f3uiBKQLtTUdnkLkmfvCSQD1mJgAg mn8gAiUOGZtLd30MwoHzX97YGvIIVdkh0ZRwFnZObLEgrFxNBOXBht+UOCM9rT9bG5G+ BM/Fhgv0uUoYmIO49XECGOzMI4dkKoSUhvR3xdx6R4pr101mb9MGPx0yLw1UbhDAUfSM 8PMw== X-Gm-Message-State: AOAM531mqU3v090KmysKoXAiUnUXKIJ8htsBUOCJtJ8tiwj0pz3S46d9 p5ErlwfkfJ6/q6tqJ3frdLpW/9RqK8TX0/h7F6pg1A== X-Google-Smtp-Source: ABdhPJzbQAUJk0kVFK3CtTs1GowkCphU5iW79ZzmaFBk380eaBTxf6iWXo14Dh/UKx+4MymCnOiVLxpRA+Ly/HIOhCU= X-Received: by 2002:a17:90b:807:: with SMTP id bk7mr1438790pjb.166.1604001649764; Thu, 29 Oct 2020 13:00:49 -0700 (PDT) MIME-Version: 1.0 References: <1049f02fb4132390a6a314eb21dccfe5500e69d6.1603372719.git.andreyknvl@google.com> In-Reply-To: From: Andrey Konovalov Date: Thu, 29 Oct 2020 21:00:38 +0100 Message-ID: Subject: Re: [PATCH RFC v2 05/21] kasan: allow VMAP_STACK for HW_TAGS mode To: Dmitry Vyukov Cc: Catalin Marinas , Will Deacon , Vincenzo Frascino , Alexander Potapenko , Marco Elver , Evgenii Stepanov , Kostya Serebryany , Peter Collingbourne , Serban Constantinescu , Andrey Ryabinin , Elena Petrova , Branislav Rankov , Kevin Brodsky , Andrew Morton , kasan-dev , Linux ARM , Linux-MM , LKML Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Oct 27, 2020 at 1:49 PM Dmitry Vyukov wrote: > > On Thu, Oct 22, 2020 at 3:19 PM Andrey Konovalov wrote: > > > > Even though hardware tag-based mode currently doesn't support checking > > vmalloc allocations, it doesn't use shadow memory and works with > > VMAP_STACK as is. > > > > Signed-off-by: Andrey Konovalov > > Link: https://linux-review.googlesource.com/id/I3552cbc12321dec82cd7372676e9372a2eb452ac > > --- > > arch/Kconfig | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/arch/Kconfig b/arch/Kconfig > > index af14a567b493..3caf7bcdcf93 100644 > > --- a/arch/Kconfig > > +++ b/arch/Kconfig > > @@ -868,7 +868,7 @@ config VMAP_STACK > > default y > > bool "Use a virtually-mapped stack" > > depends on HAVE_ARCH_VMAP_STACK > > - depends on !KASAN || KASAN_VMALLOC > > + depends on !(KASAN_GENERIC || KASAN_SW_TAGS) || KASAN_VMALLOC > > I find it a bit simpler to interpret: > > depends on !KASAN || KASAN_HW_TAGS || KASAN_VMALLOC > > due to simpler structure. But maybe it's just me. This looks better, will fix in the next version, thanks! 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charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Oct 27, 2020 at 1:49 PM Dmitry Vyukov wrote: > > On Thu, Oct 22, 2020 at 3:19 PM Andrey Konovalov wrote: > > > > Even though hardware tag-based mode currently doesn't support checking > > vmalloc allocations, it doesn't use shadow memory and works with > > VMAP_STACK as is. > > > > Signed-off-by: Andrey Konovalov > > Link: https://linux-review.googlesource.com/id/I3552cbc12321dec82cd7372676e9372a2eb452ac > > --- > > arch/Kconfig | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/arch/Kconfig b/arch/Kconfig > > index af14a567b493..3caf7bcdcf93 100644 > > --- a/arch/Kconfig > > +++ b/arch/Kconfig > > @@ -868,7 +868,7 @@ config VMAP_STACK > > default y > > bool "Use a virtually-mapped stack" > > depends on HAVE_ARCH_VMAP_STACK > > - depends on !KASAN || KASAN_VMALLOC > > + depends on !(KASAN_GENERIC || KASAN_SW_TAGS) || KASAN_VMALLOC > > I find it a bit simpler to interpret: > > depends on !KASAN || KASAN_HW_TAGS || KASAN_VMALLOC > > due to simpler structure. But maybe it's just me. This looks better, will fix in the next version, thanks! 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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; bh=lCP1WO1+VHzaoW6B3s0gmUP2QnpBjOsDZXHhfza/ed8=; b=ceVyn1WfcdlgB8tilI+oHLoEq6JBEeAW7C4tiwMGgn6sYSaBBpDe7wiA0Iuie6Rh/8 gIm01eKx0/8Cs8xntVr1AnjTpJqvWA+u+fd6sBMi1ZuN7FYPxvRFHytuB4jgFjVkT/Aa mfimiUh3QCEZD2shLssmy/RzFu38BV9kx9OkSA1EwMUun0lF/tuPspwRl0DIWY5OaNvj IAGSKzcfjhwxGJb6pM+7702v48dba3mb3JFdq70x3GMFRfWhxFJTUsQF6ll0T0a2XjjW Muz2pYkv+mGrLWyvIbXl/5YJXX/BKS70Pklj8ByfCBRw5dhUfah92ZiuByYH85qQ9Zwb ATWg== X-Gm-Message-State: AOAM531H3CAZGzmdx3DhYV4eAGI3RCYIFlrCXhKSnkPsp2spHW1BY/gp rgI+oMroS4UCyjGRPAOhkJ6cjzBVT3MZYhetFE6byA== X-Google-Smtp-Source: ABdhPJzbQAUJk0kVFK3CtTs1GowkCphU5iW79ZzmaFBk380eaBTxf6iWXo14Dh/UKx+4MymCnOiVLxpRA+Ly/HIOhCU= X-Received: by 2002:a17:90b:807:: with SMTP id bk7mr1438790pjb.166.1604001649764; Thu, 29 Oct 2020 13:00:49 -0700 (PDT) MIME-Version: 1.0 References: <1049f02fb4132390a6a314eb21dccfe5500e69d6.1603372719.git.andreyknvl@google.com> In-Reply-To: From: Andrey Konovalov Date: Thu, 29 Oct 2020 21:00:38 +0100 Message-ID: Subject: Re: [PATCH RFC v2 05/21] kasan: allow VMAP_STACK for HW_TAGS mode To: Dmitry Vyukov X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201029_160051_992230_C053F091 X-CRM114-Status: GOOD ( 19.77 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marco Elver , Elena Petrova , Linux-MM , Catalin Marinas , Kevin Brodsky , Will Deacon , Branislav Rankov , kasan-dev , LKML , Kostya Serebryany , Alexander Potapenko , Linux ARM , Serban Constantinescu , Andrey Ryabinin , Andrew Morton , Vincenzo Frascino , Peter Collingbourne , Evgenii Stepanov Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Oct 27, 2020 at 1:49 PM Dmitry Vyukov wrote: > > On Thu, Oct 22, 2020 at 3:19 PM Andrey Konovalov wrote: > > > > Even though hardware tag-based mode currently doesn't support checking > > vmalloc allocations, it doesn't use shadow memory and works with > > VMAP_STACK as is. > > > > Signed-off-by: Andrey Konovalov > > Link: https://linux-review.googlesource.com/id/I3552cbc12321dec82cd7372676e9372a2eb452ac > > --- > > arch/Kconfig | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/arch/Kconfig b/arch/Kconfig > > index af14a567b493..3caf7bcdcf93 100644 > > --- a/arch/Kconfig > > +++ b/arch/Kconfig > > @@ -868,7 +868,7 @@ config VMAP_STACK > > default y > > bool "Use a virtually-mapped stack" > > depends on HAVE_ARCH_VMAP_STACK > > - depends on !KASAN || KASAN_VMALLOC > > + depends on !(KASAN_GENERIC || KASAN_SW_TAGS) || KASAN_VMALLOC > > I find it a bit simpler to interpret: > > depends on !KASAN || KASAN_HW_TAGS || KASAN_VMALLOC > > due to simpler structure. But maybe it's just me. This looks better, will fix in the next version, thanks! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel