From patchwork Fri Jan 15 17:52:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Konovalov X-Patchwork-Id: 12023527 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT 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 63646C433E0 for ; Fri, 15 Jan 2021 17:55:45 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 01F7422262 for ; Fri, 15 Jan 2021 17:55:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 01F7422262 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:To:From:Subject:References:Mime-Version:Message-Id: In-Reply-To:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=g4a7PYlo8KbRRNo1YZyLD5jyu1mpNn+xQ4tcgmHEGVA=; b=VltosS/QuKiYURv80W84olYN6 moTBj2bUZOT4bvaaAOLMVaxDr75+aR38a5ElBI7elWQN8zhlzMWl/H6wodrzgXl/uDx6e/FoYza3O lTm5PeB2Cc36Vfdn8dJIjqhRJUFu2WMz7cV4OQ42D4P9g9YaGIsj/jsmHPq234w0x3wmCYezUo/Gd w9bZvNQNLvZ8wombaIGtylJJ6IBq1kLWtCfeveploIL4cjxg1lvKS6dZY8q9T47q5edKbDnNb4ZNK G+0MGxr5I0I1qq80NXsWYbAeczkF1p/ucFNGToqhwlgV2XLApwRHkSxWiZbdhNnLjg5ludFQKK65d Nd2N0yebw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0TI1-0003ar-Ng; Fri, 15 Jan 2021 17:53:37 +0000 Received: from mail-wr1-x449.google.com ([2a00:1450:4864:20::449]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l0THc-0003RF-04 for linux-arm-kernel@lists.infradead.org; Fri, 15 Jan 2021 17:53:18 +0000 Received: by mail-wr1-x449.google.com with SMTP id v7so4437110wra.3 for ; Fri, 15 Jan 2021 09:53:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=zMg6r0lhSdqTSYHUPwBG8lqIjESWbLf3bRfMeCJdmw0=; b=BdrM/OgtKgtwtkZrRDvSjneQEmaFxHvNidV13QaIsDaKHLQkxdZAyIz6nKTwapsqml tNVLyE1vG6b4ranZ2aJz38cXwMl+MXOv/72bmF8cyEm0QNy0E/FFi2V2ZMJivl/2HeQz ReA5B2aZ9HtAfVnXkEQQm5HHw3+9fD1P1X9/2i/WfBLQwhVzVCvonQ+dsuf/tLGLkuiF 3i839QqVJzzHPZPVBk7SgK2zlt6ggS78YV3Za+0MeOjrD7CQlae+EFP62bx1Fx2ea55L HpGh9UR6SsWuaPH7lDAdr+Fp/w0xNtjcbE+vhmz66c3PwHVwrSNLSrws/Qqis6+nSPGZ N8Ug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=zMg6r0lhSdqTSYHUPwBG8lqIjESWbLf3bRfMeCJdmw0=; b=OWoAGKQBc41CBqR6p8Pf27NuOep9aCX+X/JstoTs0SMi+5tFgBLCDteiBDdPk5UsOt kwVqmaRQvfEy6bHAn20UP7qETDOWhj55mpZdy3Zgh/oPizqOxsdyeHLfqnom9ptYJY0t BvLfmZ5J37zeQyL8DTy+jzXdCkJX4QkFsfJtiEjj5eakbFbMnKLA+sS0gbvzbd6kBEkw 4S5a2AxMser5r2ua1OfMQT8+P1IncBeNP57OdlXYb6xIXa8X01BkRMnPjWvEzx1jJMPr dBLEMQA2TTStrtXcJhmcR8kf1pF6K1CHAsO2zu7AADP9MBD+WJYERDcsjk2fNf3hezOi 5Dkg== X-Gm-Message-State: AOAM533Bqbu4zF8p8sW6y96XLI7GSbR0BzXuMJ1tQ8wwkOej8EJu/hxN Ijkz7zhPgKS3uMZI2ZejKjozcdiPNHQbCHM+ X-Google-Smtp-Source: ABdhPJyI5UjvJtuZWU5JcOkxMt0jDOhuHDy2TRnSQW3JB1SPQmiD4RvzKDe64oIbvPSHNHHmEPI2RkFtfBO/4+/U X-Received: from andreyknvl3.muc.corp.google.com ([2a00:79e0:15:13:7220:84ff:fe09:7e9d]) (user=andreyknvl job=sendgmr) by 2002:a5d:4f8a:: with SMTP id d10mr14096449wru.219.1610733189015; Fri, 15 Jan 2021 09:53:09 -0800 (PST) Date: Fri, 15 Jan 2021 18:52:41 +0100 In-Reply-To: Message-Id: <6a0fcdb9676b7e869cfc415893ede12d916c246c.1610733117.git.andreyknvl@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.30.0.284.gd98b1dd5eaa7-goog Subject: [PATCH v4 04/15] kasan: add macros to simplify checking test constraints From: Andrey Konovalov To: Andrew Morton , Catalin Marinas , Vincenzo Frascino , Dmitry Vyukov , Alexander Potapenko , Marco Elver X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210115_125312_675804_22B08EF8 X-CRM114-Status: GOOD ( 14.71 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Branislav Rankov , Andrey Konovalov , Kevin Brodsky , Will Deacon , linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, Andrey Ryabinin , Peter Collingbourne , Evgenii Stepanov Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Some KASAN tests require specific kernel configs to be enabled. Instead of copy-pasting the checks for these configs add a few helper macros and use them. Link: https://linux-review.googlesource.com/id/I237484a7fddfedf4a4aae9cc61ecbcdbe85a0a63 Suggested-by: Alexander Potapenko Reviewed-by: Marco Elver Reviewed-by: Alexander Potapenko Signed-off-by: Andrey Konovalov --- lib/test_kasan.c | 101 +++++++++++++++-------------------------------- 1 file changed, 31 insertions(+), 70 deletions(-) diff --git a/lib/test_kasan.c b/lib/test_kasan.c index 6f46e27c2af7..714ea27fcc3e 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -73,6 +73,20 @@ static void kasan_test_exit(struct kunit *test) fail_data.report_found); \ } while (0) +#define KASAN_TEST_NEEDS_CONFIG_ON(test, config) do { \ + if (!IS_ENABLED(config)) { \ + kunit_info((test), "skipping, " #config " required"); \ + return; \ + } \ +} while (0) + +#define KASAN_TEST_NEEDS_CONFIG_OFF(test, config) do { \ + if (IS_ENABLED(config)) { \ + kunit_info((test), "skipping, " #config " enabled"); \ + return; \ + } \ +} while (0) + static void kmalloc_oob_right(struct kunit *test) { char *ptr; @@ -114,10 +128,7 @@ static void kmalloc_pagealloc_oob_right(struct kunit *test) char *ptr; size_t size = KMALLOC_MAX_CACHE_SIZE + 10; - if (!IS_ENABLED(CONFIG_SLUB)) { - kunit_info(test, "CONFIG_SLUB is not enabled."); - return; - } + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB); /* * Allocate a chunk that does not fit into a SLUB cache to trigger @@ -135,10 +146,7 @@ static void kmalloc_pagealloc_uaf(struct kunit *test) char *ptr; size_t size = KMALLOC_MAX_CACHE_SIZE + 10; - if (!IS_ENABLED(CONFIG_SLUB)) { - kunit_info(test, "CONFIG_SLUB is not enabled."); - return; - } + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB); ptr = kmalloc(size, GFP_KERNEL); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr); @@ -152,10 +160,7 @@ static void kmalloc_pagealloc_invalid_free(struct kunit *test) char *ptr; size_t size = KMALLOC_MAX_CACHE_SIZE + 10; - if (!IS_ENABLED(CONFIG_SLUB)) { - kunit_info(test, "CONFIG_SLUB is not enabled."); - return; - } + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_SLUB); ptr = kmalloc(size, GFP_KERNEL); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr); @@ -218,10 +223,7 @@ static void kmalloc_oob_16(struct kunit *test) } *ptr1, *ptr2; /* This test is specifically crafted for the generic mode. */ - if (!IS_ENABLED(CONFIG_KASAN_GENERIC)) { - kunit_info(test, "CONFIG_KASAN_GENERIC required\n"); - return; - } + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC); ptr1 = kmalloc(sizeof(*ptr1) - 3, GFP_KERNEL); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr1); @@ -454,10 +456,7 @@ static void kasan_global_oob(struct kunit *test) char *p = &global_array[ARRAY_SIZE(global_array) + i]; /* Only generic mode instruments globals. */ - if (!IS_ENABLED(CONFIG_KASAN_GENERIC)) { - kunit_info(test, "CONFIG_KASAN_GENERIC required"); - return; - } + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC); KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p); } @@ -486,10 +485,7 @@ static void kasan_stack_oob(struct kunit *test) volatile int i = OOB_TAG_OFF; char *p = &stack_array[ARRAY_SIZE(stack_array) + i]; - if (!IS_ENABLED(CONFIG_KASAN_STACK)) { - kunit_info(test, "CONFIG_KASAN_STACK is not enabled"); - return; - } + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_STACK); KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p); } @@ -501,15 +497,8 @@ static void kasan_alloca_oob_left(struct kunit *test) char *p = alloca_array - 1; /* Only generic mode instruments dynamic allocas. */ - if (!IS_ENABLED(CONFIG_KASAN_GENERIC)) { - kunit_info(test, "CONFIG_KASAN_GENERIC required"); - return; - } - - if (!IS_ENABLED(CONFIG_KASAN_STACK)) { - kunit_info(test, "CONFIG_KASAN_STACK is not enabled"); - return; - } + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC); + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_STACK); KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p); } @@ -521,15 +510,8 @@ static void kasan_alloca_oob_right(struct kunit *test) char *p = alloca_array + i; /* Only generic mode instruments dynamic allocas. */ - if (!IS_ENABLED(CONFIG_KASAN_GENERIC)) { - kunit_info(test, "CONFIG_KASAN_GENERIC required"); - return; - } - - if (!IS_ENABLED(CONFIG_KASAN_STACK)) { - kunit_info(test, "CONFIG_KASAN_STACK is not enabled"); - return; - } + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC); + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_STACK); KUNIT_EXPECT_KASAN_FAIL(test, *(volatile char *)p); } @@ -593,11 +575,7 @@ static void kasan_memchr(struct kunit *test) * str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT. * See https://bugzilla.kernel.org/show_bug.cgi?id=206337 for details. */ - if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) { - kunit_info(test, - "str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT"); - return; - } + KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_AMD_MEM_ENCRYPT); if (OOB_TAG_OFF) size = round_up(size, OOB_TAG_OFF); @@ -621,11 +599,7 @@ static void kasan_memcmp(struct kunit *test) * str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT. * See https://bugzilla.kernel.org/show_bug.cgi?id=206337 for details. */ - if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) { - kunit_info(test, - "str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT"); - return; - } + KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_AMD_MEM_ENCRYPT); if (OOB_TAG_OFF) size = round_up(size, OOB_TAG_OFF); @@ -648,11 +622,7 @@ static void kasan_strings(struct kunit *test) * str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT. * See https://bugzilla.kernel.org/show_bug.cgi?id=206337 for details. */ - if (IS_ENABLED(CONFIG_AMD_MEM_ENCRYPT)) { - kunit_info(test, - "str* functions are not instrumented with CONFIG_AMD_MEM_ENCRYPT"); - return; - } + KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_AMD_MEM_ENCRYPT); ptr = kmalloc(size, GFP_KERNEL | __GFP_ZERO); KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr); @@ -713,10 +683,7 @@ static void kasan_bitops_generic(struct kunit *test) long *bits; /* This test is specifically crafted for the generic mode. */ - if (!IS_ENABLED(CONFIG_KASAN_GENERIC)) { - kunit_info(test, "CONFIG_KASAN_GENERIC required\n"); - return; - } + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_GENERIC); /* * Allocate 1 more byte, which causes kzalloc to round up to 16 bytes; @@ -744,11 +711,8 @@ static void kasan_bitops_tags(struct kunit *test) { long *bits; - /* This test is specifically crafted for the tag-based mode. */ - if (IS_ENABLED(CONFIG_KASAN_GENERIC)) { - kunit_info(test, "CONFIG_KASAN_SW_TAGS required\n"); - return; - } + /* This test is specifically crafted for tag-based modes. */ + KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC); /* Allocation size will be rounded to up granule size, which is 16. */ bits = kzalloc(sizeof(*bits), GFP_KERNEL); @@ -777,10 +741,7 @@ static void vmalloc_oob(struct kunit *test) { void *area; - if (!IS_ENABLED(CONFIG_KASAN_VMALLOC)) { - kunit_info(test, "CONFIG_KASAN_VMALLOC is not enabled."); - return; - } + KASAN_TEST_NEEDS_CONFIG_ON(test, CONFIG_KASAN_VMALLOC); /* * We have to be careful not to hit the guard page.