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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 5A195C433E0 for ; Fri, 31 Jul 2020 19:24:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3D43522B3F for ; Fri, 31 Jul 2020 19:24:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596223469; bh=uYxRrmTAN6Kn24GqG9wHDv6+bBh+YNf5Xe0WUBylxn0=; h=Date:From:To:Subject:In-Reply-To:Reply-To:List-ID:From; b=2Nsz6vr4DSbw7xjsVezEwiqH5PhO+3kkHCFcjHTUSlsDF9Bnk2bzoiao0SaoHO/GJ 1t/84lBZ3OdVUuChfjVAt1Stj2y3WswCt5E06hWn/zMar0aO+CHIdsVndUYFluty9M lTzbgiwThKa+SxYci3k0LRrO+hHzB/K/CsYCs1K4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728080AbgGaTY3 (ORCPT ); Fri, 31 Jul 2020 15:24:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:38464 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726726AbgGaTY2 (ORCPT ); Fri, 31 Jul 2020 15:24:28 -0400 Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E19CB208E4; Fri, 31 Jul 2020 19:24:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596223468; bh=uYxRrmTAN6Kn24GqG9wHDv6+bBh+YNf5Xe0WUBylxn0=; h=Date:From:To:Subject:In-Reply-To:From; b=UchmqtPTlBCvs+IpzinhReW2LoKSXfJklztut3q4BnGQBsSEFX9BfDvkUWpi3XtnI bP33bV+bBYhzBy03iFGkMQhLx+M13Bobmbcl7De2ZZbmVmlCzWh5c3Tlfnuo1euVdB hqhnRklO9JkirjiHVyq9627GS30KvtbUMx6xWMYE= Date: Fri, 31 Jul 2020 12:24:27 -0700 From: Andrew Morton To: andreyknvl@google.com, aryabinin@virtuozzo.com, catalin.marinas@arm.com, dvyukov@google.com, elver@google.com, glider@google.com, lenaptr@google.com, mm-commits@vger.kernel.org, vincenzo.frascino@arm.com, walter-zh.wu@mediatek.com Subject: + kasan-allow-enabling-stack-tagging-for-tag-based-mode.patch added to -mm tree Message-ID: <20200731192427.bCs4f5NdJ%akpm@linux-foundation.org> In-Reply-To: <20200723211432.b31831a0df3bc2cbdae31b40@linux-foundation.org> User-Agent: s-nail v14.8.16 Sender: mm-commits-owner@vger.kernel.org Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: kasan: allow enabling stack tagging for tag-based mode has been added to the -mm tree. Its filename is kasan-allow-enabling-stack-tagging-for-tag-based-mode.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/kasan-allow-enabling-stack-tagging-for-tag-based-mode.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/kasan-allow-enabling-stack-tagging-for-tag-based-mode.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Andrey Konovalov Subject: kasan: allow enabling stack tagging for tag-based mode Use CONFIG_KASAN_STACK to enable stack tagging. Note, that HWASAN short granules [1] are disabled. Supporting those will require more kernel changes. [1] https://clang.llvm.org/docs/HardwareAssistedAddressSanitizerDesign.html Link: http://lkml.kernel.org/r/e7febb907b539c3730780df587ce0b38dc558c3d.1596199677.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov Cc: Alexander Potapenko Cc: Andrey Ryabinin Cc: Catalin Marinas Cc: Dmitry Vyukov Cc: Elena Petrova Cc: Marco Elver Cc: Vincenzo Frascino Cc: Walter Wu Signed-off-by: Andrew Morton --- scripts/Makefile.kasan | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/scripts/Makefile.kasan~kasan-allow-enabling-stack-tagging-for-tag-based-mode +++ a/scripts/Makefile.kasan @@ -44,7 +44,8 @@ else endif CFLAGS_KASAN := -fsanitize=kernel-hwaddress \ - -mllvm -hwasan-instrument-stack=0 \ + -mllvm -hwasan-instrument-stack=$(CONFIG_KASAN_STACK) \ + -mllvm -hwasan-use-short-granules=0 \ $(instrumentation_flags) endif # CONFIG_KASAN_SW_TAGS _ Patches currently in -mm which might be from andreyknvl@google.com are kasan-dont-tag-stacks-allocated-with-pagealloc.patch kasan-arm64-dont-instrument-functions-that-enable-kasan.patch kasan-allow-enabling-stack-tagging-for-tag-based-mode.patch kasan-adjust-kasan_stack_oob-for-tag-based-mode.patch