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 A1947C64ED6 for ; Wed, 1 Mar 2023 14:40:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230231AbjCAOkI (ORCPT ); Wed, 1 Mar 2023 09:40:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35022 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230227AbjCAOjt (ORCPT ); Wed, 1 Mar 2023 09:39:49 -0500 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 9247B3403A for ; Wed, 1 Mar 2023 06:39:46 -0800 (PST) Received: by mail-ed1-x54a.google.com with SMTP id ck7-20020a0564021c0700b004a25d8d7593so19492296edb.0 for ; Wed, 01 Mar 2023 06:39:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=nI6aPFa9WKtq8ZRbJBabpyygWI3BetO7s5boeToCFf4=; b=cATkgsuouPJkBNjeAYA9+s1iR8apIqRMfi4XOoGeFHMEhEog2NEsq1DeNYIGai5Ak0 S3QmO80XpPCdudI8YFrtI32Eypmi77dH6qEyo+Fn16KbadIvqPWwzVb1NhC+Ap8tLi1Z 7/6EVmJlQHOY5Zxc9ILO9G3PR5FLohvlv81MJ6rJ/QZUcZOrNn3i34tb9JgkpYewI1U7 WRP+37VMuNFxMMT77lhKdJzvbMo5ZiHyh7h6ub9R8P004bZq0qY3Jl/0n2yOj+DeB2iO PbgCdp3Zi+2+zhfH98j+JOYUrHnfzL9wjwB4dlavlx2rz6xKg4yx7lSVUSBcOjrrNuc7 lAjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=nI6aPFa9WKtq8ZRbJBabpyygWI3BetO7s5boeToCFf4=; b=fope5Ct5WegPQiDXZqS51ndUDg6/tFj6GdC1EFRmxn8kamPSjT4dh1mMWtfdD5ixhQ jPdCPWIQ8PuJ8xdkaZg6liqPimwYfKNh7O1d7SJPQJw4TmkSGFwwqIyjzPDJRKV9PFfu AA+Y75WH+77Pf/b6zMRK9pQG97RPAFvSihuwv3YYkradf0PlQqUd1BAatYyySwUdLET6 BcQwpe43u9yB0N8b02CrsyinWeai49fDzEofEEx0NnW/zCD7mBQ6fN744zGtRlvVZBhr xeAxtmm5hHg6pg7fon+1rBiZnNphxGaIufKRDHxohrqu9sskAeQ9+OXzU7g1mUq6rlCq +gYw== X-Gm-Message-State: AO0yUKUDJgI+ENROysO/emFUmf1adU+dd33gDllaGokJoAu9RA4ayu0c RBvSGaD8QrjAB9hjCUGn9qThTVxHo5s= X-Google-Smtp-Source: AK7set93S1q2C0fosEy31BA46EXe+QoNnTidYRE1hF4D1mqRDUvDHPSE18kwxyuL0JHbses5B6pE+oEH8Vc= X-Received: from glider.muc.corp.google.com ([2a00:79e0:9c:201:3c31:b0cf:1498:e916]) (user=glider job=sendgmr) by 2002:a17:906:ce59:b0:888:b471:8e18 with SMTP id se25-20020a170906ce5900b00888b4718e18mr3181793ejb.8.1677681585154; Wed, 01 Mar 2023 06:39:45 -0800 (PST) Date: Wed, 1 Mar 2023 15:39:33 +0100 In-Reply-To: <20230301143933.2374658-1-glider@google.com> Mime-Version: 1.0 References: <20230301143933.2374658-1-glider@google.com> X-Mailer: git-send-email 2.39.2.722.g9855ee24e9-goog Message-ID: <20230301143933.2374658-4-glider@google.com> Subject: [PATCH 4/4] kmsan: add memsetXX tests From: Alexander Potapenko To: glider@google.com Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, dave.hansen@linux.intel.com, hpa@zytor.com, akpm@linux-foundation.org, elver@google.com, dvyukov@google.com, nathan@kernel.org, ndesaulniers@google.com, kasan-dev@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add tests ensuring that memset16()/memset32()/memset64() are instrumented by KMSAN and correctly initialize the memory. Signed-off-by: Alexander Potapenko --- mm/kmsan/kmsan_test.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/mm/kmsan/kmsan_test.c b/mm/kmsan/kmsan_test.c index cc98a3f4e0899..e450a000441fb 100644 --- a/mm/kmsan/kmsan_test.c +++ b/mm/kmsan/kmsan_test.c @@ -503,6 +503,25 @@ static void test_memcpy_aligned_to_unaligned2(struct kunit *test) KUNIT_EXPECT_TRUE(test, report_matches(&expect)); } +/* Generate test cases for memset16(), memset32(), memset64(). */ +#define DEFINE_TEST_MEMSETXX(size, var_ty) \ + static void test_memset##size(struct kunit *test) \ + { \ + EXPECTATION_NO_REPORT(expect); \ + volatile var_ty uninit; \ + \ + kunit_info(test, \ + "memset" #size "() should initialize memory\n"); \ + DO_NOT_OPTIMIZE(uninit); \ + memset##size((var_ty *)&uninit, 0, 1); \ + kmsan_check_memory((void *)&uninit, sizeof(uninit)); \ + KUNIT_EXPECT_TRUE(test, report_matches(&expect)); \ + } + +DEFINE_TEST_MEMSETXX(16, uint16_t) +DEFINE_TEST_MEMSETXX(32, uint32_t) +DEFINE_TEST_MEMSETXX(64, uint64_t) + static noinline void fibonacci(int *array, int size, int start) { if (start < 2 || (start == size)) @@ -549,6 +568,9 @@ static struct kunit_case kmsan_test_cases[] = { KUNIT_CASE(test_memcpy_aligned_to_aligned), KUNIT_CASE(test_memcpy_aligned_to_unaligned), KUNIT_CASE(test_memcpy_aligned_to_unaligned2), + KUNIT_CASE(test_memset16), + KUNIT_CASE(test_memset32), + KUNIT_CASE(test_memset64), KUNIT_CASE(test_long_origin_chain), {}, }; -- 2.39.2.722.g9855ee24e9-goog