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[23.128.96.18]) by mx.google.com with ESMTP id q3si3723475ejb.483.2021.01.15.05.36.04; Fri, 15 Jan 2021 05:36:28 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=LpFhrwzG; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729451AbhAONd6 (ORCPT + 99 others); Fri, 15 Jan 2021 08:33:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728593AbhAONd5 (ORCPT ); Fri, 15 Jan 2021 08:33:57 -0500 Received: from mail-qk1-x72f.google.com (mail-qk1-x72f.google.com [IPv6:2607:f8b0:4864:20::72f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC164C061757 for ; Fri, 15 Jan 2021 05:33:16 -0800 (PST) Received: by mail-qk1-x72f.google.com with SMTP id 186so11594742qkj.3 for ; Fri, 15 Jan 2021 05:33:16 -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; bh=K0aoGg0wPuE1hYe4sqWhHeR+8ZOS1Jh5Y7WE82oHlpQ=; b=LpFhrwzGtivImHuZyJyOguqdzO/W6jTbisntyRsA8SYA0st26tZxXzsVp0UCcBzpyY s4cMz9Cr2GUSypTdyNhkmMIp9YwhuIUoWrnuI4ppAKLO9X0Q7Mm89lvZfO5N7atXYTc+ 9Vj+efQwYTaOy+5WFfHpm8FdcGbMr7EpTTW7PFW8W0igIVsw9AIqppb1b87rFDCkcxjy fIKnmtMTEh9tlIEqTphJq/96v5h5usIHaf+SEmgcT/5ogQ8d21giWCsqwOUgilZlwifr NqvNVJpvwVmPSVcjzidnGHdMldOP5lWKus3YFw38eYTfmDcQgnumIT16b33j25Hf6i2b BI8g== 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=K0aoGg0wPuE1hYe4sqWhHeR+8ZOS1Jh5Y7WE82oHlpQ=; b=JSltoBajpLh41o2eg9gYqal7J1dyyoeRKQzJhWKuJYMIozWLwxj9CaSgDKW98xwhne 7Kr40qA+vRJdbGTwX8lCoNUl1lvtloQN3f8DcnM+mibtFggkR3P763FXVVxB8crxBcsJ TCqFF5XcTiUZW77TUjYnb9NtDmb4CHaRWV0CRBfhm985McUITBaLEHQFourAVx6I0387 SCujnj0pj7yw9pMAl9n3k/kPv/S76JSMx9OTt92uKXPBlEjmiBXn5awp0TBIBXa1CQUK ehrD+eTM7gjsLz1jVZXTjyBvKmY52O8VF81PpVaYWdTGDCS3DaPY8ZrTXd22Fm4Zl29V 1pvg== X-Gm-Message-State: AOAM531RF4BFgUPNbujaps6oHHl3eHl3ucOHbfkF3feS4TD6yAmjSZi3 I6WSYrVqpjaGm2vEqKKnLSS+MxCMOO+CGWRwI0Parw== X-Received: by 2002:a05:620a:2051:: with SMTP id d17mr12177058qka.403.1610717595909; Fri, 15 Jan 2021 05:33:15 -0800 (PST) MIME-Version: 1.0 References: <5153dafd6498a9183cfedaf267a2953defb6578e.1610652890.git.andreyknvl@google.com> In-Reply-To: <5153dafd6498a9183cfedaf267a2953defb6578e.1610652890.git.andreyknvl@google.com> From: Alexander Potapenko Date: Fri, 15 Jan 2021 14:33:04 +0100 Message-ID: Subject: Re: [PATCH v3 05/15] kasan: add match-all tag tests To: Andrey Konovalov Cc: Andrew Morton , Catalin Marinas , Vincenzo Frascino , Dmitry Vyukov , Marco Elver , Will Deacon , Andrey Ryabinin , Peter Collingbourne , Evgenii Stepanov , Branislav Rankov , Kevin Brodsky , kasan-dev , Linux ARM , Linux Memory Management List , LKML Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 14, 2021 at 8:36 PM Andrey Konovalov wrote: > > Add 3 new tests for tag-based KASAN modes: > > 1. Check that match-all pointer tag is not assigned randomly. > 2. Check that 0xff works as a match-all pointer tag. > 3. Check that there are no match-all memory tags. > > Note, that test #3 causes a significant number (255) of KASAN reports > to be printed during execution for the SW_TAGS mode. > > Link: https://linux-review.googlesource.com/id/I78f1375efafa162b37f3abcb2c5bc2f3955dfd8e > Reviewed-by: Marco Elver > Signed-off-by: Andrey Konovalov Reviewed-by: Alexander Potapenko