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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 0765BC433E6 for ; Wed, 24 Feb 2021 20:07:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B8F3564F23 for ; Wed, 24 Feb 2021 20:07:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234706AbhBXUHL (ORCPT ); Wed, 24 Feb 2021 15:07:11 -0500 Received: from mail.kernel.org ([198.145.29.99]:56272 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235172AbhBXUGx (ORCPT ); Wed, 24 Feb 2021 15:06:53 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7BB6664F0C; Wed, 24 Feb 2021 20:06:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1614197164; bh=qw9ptL7Cnw4elSq3daOYS3InTUivIfyhGpsiItG/Ub4=; h=Date:From:To:Subject:In-Reply-To:From; b=nTIFO2KC6jeZYIbqNAvBnC08GwHIkzy/kbuUSxjTD9v2R1YYSP7N8T4X4b6+zEsWY VW4mtLTcJpVQLDP6YfeAfY+BatsBRJlOU3YNVCH4uz4P1YM/MjLeE13UtsoZnEHaTY xLP8nCd/XGQonaFLYeoJ9DKpWYYWpt3E8Vn8mFfo= Date: Wed, 24 Feb 2021 12:06:02 -0800 From: Andrew Morton To: akpm@linux-foundation.org, andreyknvl@google.com, aryabinin@virtuozzo.com, Branislav.Rankov@arm.com, catalin.marinas@arm.com, dvyukov@google.com, elver@google.com, eugenis@google.com, glider@google.com, kevin.brodsky@arm.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, pcc@google.com, torvalds@linux-foundation.org, vincenzo.frascino@arm.com, will.deacon@arm.com Subject: [patch 100/173] kasan: don't run tests when KASAN is not enabled Message-ID: <20210224200602.U_Wshqs7c%akpm@linux-foundation.org> In-Reply-To: <20210224115824.1e289a6895087f10c41dd8d6@linux-foundation.org> User-Agent: s-nail v14.8.16 Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org From: Andrey Konovalov Subject: kasan: don't run tests when KASAN is not enabled Don't run KASAN tests when it's disabled with kasan.mode=off to avoid corrupting kernel memory. Link: https://linux-review.googlesource.com/id/I6447af436a69a94bfc35477f6bf4e2122948355e Link: https://lkml.kernel.org/r/25bd4fb5cae7b421d806a1f33fb633edd313f0c7.1610733117.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov Reviewed-by: Marco Elver Reviewed-by: Alexander Potapenko Cc: Andrey Ryabinin Cc: Branislav Rankov Cc: Catalin Marinas Cc: Dmitry Vyukov Cc: Evgenii Stepanov Cc: Kevin Brodsky Cc: Peter Collingbourne Cc: Vincenzo Frascino Cc: Will Deacon Signed-off-by: Andrew Morton --- lib/test_kasan.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/lib/test_kasan.c~kasan-dont-run-tests-when-kasan-is-not-enabled +++ a/lib/test_kasan.c @@ -47,6 +47,11 @@ static bool multishot; */ static int kasan_test_init(struct kunit *test) { + if (!kasan_enabled()) { + kunit_err(test, "can't run KASAN tests with KASAN disabled"); + return -1; + } + multishot = kasan_save_enable_multi_shot(); kasan_set_tagging_report_once(false); return 0; _