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=-11.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 11612C388F9 for ; Wed, 11 Nov 2020 16:22:27 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8BC0820659 for ; Wed, 11 Nov 2020 16:22:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="TPh2xWjP"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="OU4m2N6j" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8BC0820659 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=dxf2a31mHSBjdPGvUaUtHgU3rhzD8weInOg+VZ3nx0s=; b=TPh2xWjP7N33C+/j0eawzVLn5 BA853FxbHTeBUuJ0ApVMW+WMrSO0YmkbnONusxuRM1Mr3ljjJJadcKSuQRCX3raQIsLhAC0vyxp8Y uMmA/98nboh0lPavD1U05nFMj3BNGH/5DJJ3ShvQDE7p7GCFs4spfNbF2zURrKTDJbj+lWF+mHTMP hqhRg6xqIDvcNLXWs2LELT3IybsE8X7QBgraS1RJaqpbGOqv7wNu8pPS1GLANXO10YLsDRM48/iXh uZOozb5vsXiISIz7U20/VyWh5En4i/avbgA9Z0OX4vrU98jzXjRglDdY/stiCvEz2gnSnqjMZxSp9 gknz2Ivlw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kcsrl-000493-Sk; Wed, 11 Nov 2020 16:21:01 +0000 Received: from mail-wr1-x442.google.com ([2a00:1450:4864:20::442]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kcsrj-00047x-4B for linux-arm-kernel@lists.infradead.org; Wed, 11 Nov 2020 16:20:59 +0000 Received: by mail-wr1-x442.google.com with SMTP id b6so3101345wrt.4 for ; Wed, 11 Nov 2020 08:20:58 -0800 (PST) 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=h04pzBWTT3/7lLb3bXzNbuLnpXPPVyksc65veB41bHc=; b=OU4m2N6jkD06QsJEXoNnGq0wTIDtVx0xAr8Tn48tUcHrNQ6oZMQaIXgV0aTQyhQ/s/ hcx4mzotI1Ij0H53R2Kl0kdmmhSObzVIgQXnbSrByJEBQoWiRtFNrvhX8Zw/FvEcyGLh 0O6nYFqBiJtIeVc+jpxx/qWGlAjdDIgvXUDMoEQiu0SItxmPIkmVO/eFAbEEiZLwbQ4b JNnDO3Zm80rL9yOcl6JmyZ1iGaex18g0qBLsIbXw3fk8HVFjyNJ/lihVXuf4j8+1Eq8I jiVMONhB80oBkc6GeNwWahRtHmooRA420R2IvNWUfErKxiCtR0q+qefshibDanhm6G38 yH+A== 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=h04pzBWTT3/7lLb3bXzNbuLnpXPPVyksc65veB41bHc=; b=eh6TOzoSTIYT+QgpD3m2xx9vcGpo6cqCDF5Y0ireJ60febORrBJ8M86WE3WnD2JAdE W5bVGsY1sAi63Lra2tgYwZiy6OzLoSXI3z7su1IYxIkHZeJkV1J4YeMM8+RagEaRRPNU jwIPmwOMvnSsFmq5CuourGmi/ZNcuu3WE/kW2eOsDhjnlUvJkAw+hgpI8sAHCJu00OqQ 0gY5+A2UKf1+swAzReYu1+jV+H7FUMFlofp8aJ5F3M376NYTjm+ok9De+SC4QV5Cx+iP lffpd2Xhdm9yK9mDQeaPBwwHw8hMAWzhEIeiVSinJk8FP82L2p/2yE/65+eSrmkhYgxN y8gw== X-Gm-Message-State: AOAM530PzWVPFRgxPHkRU7S8IWz26UWS80jm/hZdPoDvVW1p1194b5pL R15h4XENraQAyFRwVBwVDqmqXQ== X-Google-Smtp-Source: ABdhPJxxlFWci8j3QfAeiJZTWzJ9B8pX9QXgXgNEi+Jmxe1zXm9nOMW05oMxWDt7zaDOuJjiX9bynA== X-Received: by 2002:a05:6000:364:: with SMTP id f4mr3136596wrf.290.1605111658027; Wed, 11 Nov 2020 08:20:58 -0800 (PST) Received: from elver.google.com ([2a00:79e0:15:13:f693:9fff:fef4:2449]) by smtp.gmail.com with ESMTPSA id e5sm1926733wrs.84.2020.11.11.08.20.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Nov 2020 08:20:57 -0800 (PST) Date: Wed, 11 Nov 2020 17:20:51 +0100 From: Marco Elver To: Andrey Konovalov Subject: Re: [PATCH v2 05/20] kasan: allow VMAP_STACK for HW_TAGS mode Message-ID: <20201111162051.GG517454@elver.google.com> References: <3443e106c40799e5dc3981dec2011379f3cbbb0c.1605046662.git.andreyknvl@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <3443e106c40799e5dc3981dec2011379f3cbbb0c.1605046662.git.andreyknvl@google.com> User-Agent: Mutt/1.14.6 (2020-07-11) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201111_112059_220773_1691A326 X-CRM114-Status: GOOD ( 20.34 ) 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: linux-arm-kernel@lists.infradead.org, Branislav Rankov , Catalin Marinas , Kevin Brodsky , Will Deacon , linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, Alexander Potapenko , Dmitry Vyukov , Andrey Ryabinin , Andrew Morton , Vincenzo Frascino , 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, Nov 10, 2020 at 11:20PM +0100, 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. Change VMAP_STACK definition accordingly. > > Signed-off-by: Andrey Konovalov > Link: https://linux-review.googlesource.com/id/I3552cbc12321dec82cd7372676e9372a2eb452ac > --- Shouldn't this be in the other series? FWIW, Reviewed-by: Marco Elver > arch/Kconfig | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/arch/Kconfig b/arch/Kconfig > index 56b6ccc0e32d..7e7d14fae568 100644 > --- a/arch/Kconfig > +++ b/arch/Kconfig > @@ -914,16 +914,16 @@ 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 || KASAN_HW_TAGS || KASAN_VMALLOC > help > Enable this if you want the use virtually-mapped kernel stacks > with guard pages. This causes kernel stack overflows to be > caught immediately rather than causing difficult-to-diagnose > corruption. > > - To use this with KASAN, the architecture must support backing > - virtual mappings with real shadow memory, and KASAN_VMALLOC must > - be enabled. > + To use this with software KASAN modes, the architecture must support > + backing virtual mappings with real shadow memory, and KASAN_VMALLOC > + must be enabled. > > config ARCH_OPTIONAL_KERNEL_RWX > def_bool n > -- > 2.29.2.222.g5d2a92d10f8-goog > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel