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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F945CCA47B for ; Fri, 1 Jul 2022 14:24:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232249AbiGAOYh (ORCPT ); Fri, 1 Jul 2022 10:24:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38512 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231146AbiGAOYJ (ORCPT ); Fri, 1 Jul 2022 10:24:09 -0400 Received: from mail-ed1-x54a.google.com (mail-ed1-x54a.google.com [IPv6:2a00:1450:4864:20::54a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9675C35841 for ; Fri, 1 Jul 2022 07:23:39 -0700 (PDT) Received: by mail-ed1-x54a.google.com with SMTP id q18-20020a056402519200b004358ce90d97so1869731edd.4 for ; Fri, 01 Jul 2022 07:23:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=os0Zx5VZv6p+Rm8I/hkYFMfJuZRHr+O61ed8WspeRIk=; b=OV7vbBjecQ+2aw/zjF5UI7FBbnLXSdlTtfDvhPtucRYMTl+svaPlqkq36KZQsvGhP/ ne8e4l8I3/0GRvxegtfKUO6cwS2qPksp9NrQQ5lnpQwHWvK+HWlKJBwNEAVhhJIwF7u5 Ns847PNFYy8k60pdHRyM2PsMAizAqLlGYbkafF+wOEnPqhwIwE4aYtsL1hd1Jq6fCqFz ce+lc///QcEti81QlLr7Y54ODBIMH5AChXdc7cPCvHBnFhpkGjgRkrjcUhJb8u74OZGE PCvurUMEpDHYof925nelBMEr785dzxSUlTT5q2hRH/q3uOyGgTsSk9NCo4066mule3qb +5Dw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=os0Zx5VZv6p+Rm8I/hkYFMfJuZRHr+O61ed8WspeRIk=; b=muoByKWIpHhamH/CFXWWbIMG+TozInlMSQSTN+hl9i4QW60nliRIl+jIxL5J1BpEpT qaQZtRSYBuo5LZbXb6ik5ChSPP/VuPVbQIlq3LMitOJE2zIGrcQQ5rMmfOpQUNHmbEQE 5MY1TjzsnKy6HUDn54UfQIEtNG69aZ3Xhp+QQVQ6pJvWD9Rd51W4T40VW3OV4U0DwqyK 7oi2M5NJA/MeRDX3ViXV7sxjn1ggrNxXjz1kmV8wVGVRcUyIDlra+4v5r7DlUhR3HrNX xX81cfPYbOJzdRkgP9tJaXzxfaCJDBB6dQo8fqGJ4JG/uB/9PmLIhIPsNYvx7R9QPv5g Rl7A== X-Gm-Message-State: AJIora/hFIxDzE/xioywpz2qQMaHGGxQTnMyK26pQ95ISKsHylrGNXkw E3Lzn2WJ3PLAObiAsvJhN15RGRYFmuo= X-Google-Smtp-Source: AGRyM1sWpivMRCzyWBt2NMDYpIZXoVXItcZn0l1qEGR/DeU09TxwkO65LsmcVUOum8/EZGKYMgfViYv/FwA= X-Received: from glider.muc.corp.google.com ([2a00:79e0:9c:201:a6f5:f713:759c:abb6]) (user=glider job=sendgmr) by 2002:a05:6402:4244:b0:437:726c:e1a with SMTP id g4-20020a056402424400b00437726c0e1amr19866573edb.107.1656685417915; Fri, 01 Jul 2022 07:23:37 -0700 (PDT) Date: Fri, 1 Jul 2022 16:22:33 +0200 In-Reply-To: <20220701142310.2188015-1-glider@google.com> Message-Id: <20220701142310.2188015-9-glider@google.com> Mime-Version: 1.0 References: <20220701142310.2188015-1-glider@google.com> X-Mailer: git-send-email 2.37.0.rc0.161.g10f37bed90-goog Subject: [PATCH v4 08/45] kmsan: mark noinstr as __no_sanitize_memory From: Alexander Potapenko To: glider@google.com Cc: Alexander Viro , Alexei Starovoitov , Andrew Morton , Andrey Konovalov , Andy Lutomirski , Arnd Bergmann , Borislav Petkov , Christoph Hellwig , Christoph Lameter , David Rientjes , Dmitry Vyukov , Eric Dumazet , Greg Kroah-Hartman , Herbert Xu , Ilya Leoshkevich , Ingo Molnar , Jens Axboe , Joonsoo Kim , Kees Cook , Marco Elver , Mark Rutland , Matthew Wilcox , "Michael S. Tsirkin" , Pekka Enberg , Peter Zijlstra , Petr Mladek , Steven Rostedt , Thomas Gleixner , Vasily Gorbik , Vegard Nossum , Vlastimil Babka , kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org noinstr functions should never be instrumented, so make KMSAN skip them by applying the __no_sanitize_memory attribute. Signed-off-by: Alexander Potapenko --- v2: -- moved this patch earlier in the series per Mark Rutland's request Link: https://linux-review.googlesource.com/id/I3c9abe860b97b49bc0c8026918b17a50448dec0d --- include/linux/compiler_types.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index d08dfcb0ac687..fb5777e5228e7 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -227,7 +227,8 @@ struct ftrace_likely_data { /* Section for code which can't be instrumented at all */ #define noinstr \ noinline notrace __attribute((__section__(".noinstr.text"))) \ - __no_kcsan __no_sanitize_address __no_profile __no_sanitize_coverage + __no_kcsan __no_sanitize_address __no_profile __no_sanitize_coverage \ + __no_sanitize_memory #endif /* __KERNEL__ */ -- 2.37.0.rc0.161.g10f37bed90-goog