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=-20.6 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, USER_AGENT_GIT,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 05047C433E0 for ; Tue, 4 Aug 2020 12:41:47 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B4F76208A9 for ; Tue, 4 Aug 2020 12:41:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="al711nch" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B4F76208A9 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 8AE178D015A; Tue, 4 Aug 2020 08:41:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 80E7D8D0081; Tue, 4 Aug 2020 08:41:44 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 661888D015A; Tue, 4 Aug 2020 08:41:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0249.hostedemail.com [216.40.44.249]) by kanga.kvack.org (Postfix) with ESMTP id 51B2A8D0081 for ; Tue, 4 Aug 2020 08:41:44 -0400 (EDT) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 09C13824805A for ; Tue, 4 Aug 2020 12:41:44 +0000 (UTC) X-FDA: 77112847728.01.whip40_0e1114926fa6 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id CB86E100471EF for ; Tue, 4 Aug 2020 12:41:43 +0000 (UTC) X-HE-Tag: whip40_0e1114926fa6 X-Filterd-Recvd-Size: 3993 Received: from mail-qv1-f74.google.com (mail-qv1-f74.google.com [209.85.219.74]) by imf27.hostedemail.com (Postfix) with ESMTP for ; Tue, 4 Aug 2020 12:41:43 +0000 (UTC) Received: by mail-qv1-f74.google.com with SMTP id p15so15325306qvv.7 for ; Tue, 04 Aug 2020 05:41:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=r3AVQip2xq9L4iLlC84/aNvGhdtcJ5cWyH3sWORBbtc=; b=al711nch3pGhu0oC1wlPaqYQVlVmmhVzmYHp/7d5LETFi5Rtuy1m2i6Q7VZyHZWzvU hgxHf9w/ckVjXi3fhG4d+LBft5K89LkjnHbAbhqXdJQf+gaDGnDI0gAmQvywiJ+Vcfpq fXUe1mXmVqZwCTV/bjfqcfsyDvqhOVJmyD48Oj7Db+FICYod8rKgX7Xwry1oDf2wkEup RR75P7hQf3YSyhtdZQyTtr0fFU1zbFApwbVSnzym/MadtAc0yGXWKQ+A2mW0MAhYz+R7 l9TXw52PMyujrl18cxAUf/X+TsTelw+wmXc4IeyF7EmwiAsMBbLJcMRtX980kmLZ8TUT wSNQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=r3AVQip2xq9L4iLlC84/aNvGhdtcJ5cWyH3sWORBbtc=; b=SO5iC6qIDXMekf0P6iWHCDsm7HAnqtb/8t1SDzwwKxePqjkD3eVFlt19I4OKK7rbM9 oFIOIAl/p5YF2fG9Xx3H2NfLepWVHh/Wz8LnfaQc+lYziDn5TJpp5a1m/EdjAO5cIDY0 gcaHTcOmuJ8Ro/miBnDideLEKCTe1WX6E2233TYCeAkigpE7jfpwqzn16lKKUNVMKDgJ BcPqP85Yvd9dBYXzpp/RG/RLevpE4p5UX4xmOif3U6J+ezLBpDiz9d/SJtchVBi1L7Rj pfai30Led0S7iROjMC+UqzRmFsNSW5qBAKSvDWSBDASJTowK8bt2aHy+vKr0Y03C+ZLt Sh4g== X-Gm-Message-State: AOAM532vmzeWMuIRZemUumxOK9KEItygvRWRQjTHa38EM8PlleBuldOY F0auzNOjEXtDryyrAXLmJdt3g1xTy+b1S2i+ X-Google-Smtp-Source: ABdhPJxNVNohw+RMFq1uv1gOt0ICKpmDjLXFJp+5X/8n8NGst2h3rqGrz443ENowh4INA9/32k2O/16zVxLTFGJ0 X-Received: by 2002:ad4:438e:: with SMTP id s14mr21419425qvr.18.1596544902628; Tue, 04 Aug 2020 05:41:42 -0700 (PDT) Date: Tue, 4 Aug 2020 14:41:27 +0200 In-Reply-To: Message-Id: <99f7d90a4237431bf5988599fb41358e92876eb0.1596544734.git.andreyknvl@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.28.0.163.g6104cc2f0b6-goog Subject: [PATCH v2 4/5] kasan: allow enabling stack tagging for tag-based mode From: Andrey Konovalov To: Andrew Morton Cc: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Marco Elver , Ard Biesheuvel , Arvind Sankar , kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, Walter Wu , Elena Petrova , Vincenzo Frascino , Catalin Marinas , Andrey Konovalov Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: CB86E100471EF X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 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: 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 Signed-off-by: Andrey Konovalov --- scripts/Makefile.kasan | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/scripts/Makefile.kasan b/scripts/Makefile.kasan index 03757cc60e06..f4beee1b0013 100644 --- a/scripts/Makefile.kasan +++ b/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 -- 2.28.0.163.g6104cc2f0b6-goog