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, URIBL_BLOCKED,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 EE298C433E1 for ; Fri, 31 Jul 2020 13:20:58 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AB8172245C for ; Fri, 31 Jul 2020 13:20:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="TTB8YFCf" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB8172245C 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 576318D0030; Fri, 31 Jul 2020 09:20:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 500DE8D002E; Fri, 31 Jul 2020 09:20:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 351EE8D0030; Fri, 31 Jul 2020 09:20:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0075.hostedemail.com [216.40.44.75]) by kanga.kvack.org (Postfix) with ESMTP id 1274A8D002E for ; Fri, 31 Jul 2020 09:20:58 -0400 (EDT) Received: from smtpin19.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id C29E833CD for ; Fri, 31 Jul 2020 13:20:57 +0000 (UTC) X-FDA: 77098431354.19.sleep51_2306d9c26f84 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin19.hostedemail.com (Postfix) with ESMTP id 8FCAC1AD1B4 for ; Fri, 31 Jul 2020 13:20:57 +0000 (UTC) X-HE-Tag: sleep51_2306d9c26f84 X-Filterd-Recvd-Size: 3887 Received: from mail-qt1-f201.google.com (mail-qt1-f201.google.com [209.85.160.201]) by imf01.hostedemail.com (Postfix) with ESMTP for ; Fri, 31 Jul 2020 13:20:56 +0000 (UTC) Received: by mail-qt1-f201.google.com with SMTP id z5so4552787qtc.2 for ; Fri, 31 Jul 2020 06:20:56 -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=TTB8YFCfAZYUym3DOqMkA0+g0/8FCMhabbLYjC63ds5jKSWofJg0VQEzkUAOeUvkAv OawmRQPqHX8efu59ZaAe98ros3DUmP0Ss8a7Vq4Zb/wi/tm+awFIxF/CfKgwZvSFl+14 uLzjuW6ocziQZl1kRGQY1MTxcMyZA2YSd5+iDwW9PtoIy+CB70YN67dL0WPnKXf8gx5b Q9FeFiJvNW4S/HrxsP51PO714ruAHQfgbUWLjBUX598VNA/U/7Xu6s90EtY2PsCb5dJq 2cWJ0yYJZaVdiW+KfIGtEa42o/G4hwOm9aAhQ0jbJ7L+5BRJ+VwXbT+cxgy8Ipj5kv4P +jNA== 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=ArZnm0nioPZzNagJ8dgAkNOW/jUqUjPleU70vGq6pWn5SQkuutQiziIUkpC6Je2dzo T7V4+0KOi5TPEZ6EkXbgFIyjTcGepCts0OUApzXo664sG8XTtMO4D9bWcoEB2hzRnR0Y Jmq2dTulLvtRV8BPhCOStHOZVezuqaHIe0I3GpgtXNO8FOwutUQbgD9duOKWBM3X00k2 xOAbsPz4CChuLUEhsFFII3Si5tRHi0O9dWhK2r3AMqRS6AWEQZCoZRvkx/rkleSzDaNL 8It0tvTqmyaXC4RzevtmqhcCCLaxtqFhRuZ7T7Rlz0HeplAz16GnmAbYSXYcIm8RVfUr rXLg== X-Gm-Message-State: AOAM530tEsVtMHhOwYm/faw0kU3hGMke50+M/iwtI9p/rBnK/ktqqnc/ cVKuTdTZkJ8BezlQ0jsZQFLHAnTYO3zaWwBZ X-Google-Smtp-Source: ABdhPJwHN96/7/g73I8CKHlXT0vmgjznv7/reMovkgTBdvlRSkefiTmHjtsbRKQCpkYSHvO/GfC2zaYXn24Hy8+h X-Received: by 2002:a0c:99c6:: with SMTP id y6mr4112285qve.86.1596201656301; Fri, 31 Jul 2020 06:20:56 -0700 (PDT) Date: Fri, 31 Jul 2020 15:20:40 +0200 In-Reply-To: Message-Id: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.28.0.163.g6104cc2f0b6-goog Subject: [PATCH 3/4] kasan: allow enabling stack tagging for tag-based mode From: Andrey Konovalov To: Andrew Morton Cc: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Marco Elver , kasan-dev@googlegroups.com, linux-mm@kvack.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: 8FCAC1AD1B4 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 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