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=-9.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 4576ACA9EC1 for ; Tue, 29 Oct 2019 04:21:17 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 09D232086A for ; Tue, 29 Oct 2019 04:21:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=axtens.net header.i=@axtens.net header.b="lcDyHdzU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 09D232086A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=axtens.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id AF0176B000A; Tue, 29 Oct 2019 00:21:16 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A792F6B000C; Tue, 29 Oct 2019 00:21:16 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 941496B000D; Tue, 29 Oct 2019 00:21:16 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0136.hostedemail.com [216.40.44.136]) by kanga.kvack.org (Postfix) with ESMTP id 6E7246B000A for ; Tue, 29 Oct 2019 00:21:16 -0400 (EDT) Received: from smtpin03.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id 000CB180AD81D for ; Tue, 29 Oct 2019 04:21:15 +0000 (UTC) X-FDA: 76095522552.03.chess81_7f657e982bd2c X-HE-Tag: chess81_7f657e982bd2c X-Filterd-Recvd-Size: 4253 Received: from mail-pl1-f196.google.com (mail-pl1-f196.google.com [209.85.214.196]) by imf41.hostedemail.com (Postfix) with ESMTP for ; Tue, 29 Oct 2019 04:21:15 +0000 (UTC) Received: by mail-pl1-f196.google.com with SMTP id y24so6889928plr.12 for ; Mon, 28 Oct 2019 21:21:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=axtens.net; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=HNDV9DT7O32N2h9l7CrACdWJSzNVfR3Dv9pnUT55kOg=; b=lcDyHdzUacgOhucQ6b8IWgwE46Vlk8g9GsG0YiqbvSuRh0midPQjkKTH8pqXZ6eSlf M1yH4o7rgNX40yBq5M4PAJVge7qa26A++93dTOcRGcNCrIQhxh5QfkU3EV2DF34ElmZk 63eYGshNT63iTFBqS5s6pvBKl+7JsqOxJf9F8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=HNDV9DT7O32N2h9l7CrACdWJSzNVfR3Dv9pnUT55kOg=; b=GuyiYMhHbKurWgfpnenymF4dj6rNhcsnvlVFCPx3rnmDkHcYw+T2/HcrJqsc0f3p1d y4pV4MIjZEGkH+Krvvg1KJ8HzlQL1qpNv7DDpOF7sQ+1muqubESabsJJKS5zgLePlAOF AhbgNIzxue2pYs6CqESseKeuqwG6fjJblY9yF16k9X2Z75ZexKdTJiHPEl/mE9+/DvrZ CX2Rc/ZYBDqUhYb4e4ulAclk8mfH3gz+wiNnBJ9YQHaAmJPhEAoLKZ3s8Nf8J3fJgaYf ReBtsOls05DSARpfL2bgiFR7/ua6A1i4GlaS+QEWiEWJ1tMznwORBztf/Nmgnk5/8nF8 QB4Q== X-Gm-Message-State: APjAAAW7VxZ4xoAZCvKj/0BP7v99yNXu7CM/o3pkDukyFTKjlB2LSqo5 JEPc4yFrnOkgaxx7rmN5rXKSVA== X-Google-Smtp-Source: APXvYqxLsff9odhBvNICfK+D6Rfn6FtMiU4d244WqDyFRpWs6AJDTPdDv2j0OdBnEo98eZFpsfQ/6A== X-Received: by 2002:a17:902:68:: with SMTP id 95mr1661194pla.117.1572322874296; Mon, 28 Oct 2019 21:21:14 -0700 (PDT) Received: from localhost ([2001:44b8:802:1120:783a:2bb9:f7cb:7c3c]) by smtp.gmail.com with ESMTPSA id y11sm15418521pfq.1.2019.10.28.21.21.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Oct 2019 21:21:13 -0700 (PDT) From: Daniel Axtens To: kasan-dev@googlegroups.com, linux-mm@kvack.org, x86@kernel.org, aryabinin@virtuozzo.com, glider@google.com, luto@kernel.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, dvyukov@google.com, christophe.leroy@c-s.fr Cc: linuxppc-dev@lists.ozlabs.org, gor@linux.ibm.com, Daniel Axtens Subject: [PATCH v10 2/5] kasan: add test for vmalloc Date: Tue, 29 Oct 2019 15:20:56 +1100 Message-Id: <20191029042059.28541-3-dja@axtens.net> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191029042059.28541-1-dja@axtens.net> References: <20191029042059.28541-1-dja@axtens.net> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: Test kasan vmalloc support by adding a new test to the module. Signed-off-by: Daniel Axtens -- v5: split out per Christophe Leroy --- lib/test_kasan.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/lib/test_kasan.c b/lib/test_kasan.c index 49cc4d570a40..328d33beae36 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -19,6 +19,7 @@ #include #include #include +#include =20 #include =20 @@ -748,6 +749,30 @@ static noinline void __init kmalloc_double_kzfree(vo= id) kzfree(ptr); } =20 +#ifdef CONFIG_KASAN_VMALLOC +static noinline void __init vmalloc_oob(void) +{ + void *area; + + pr_info("vmalloc out-of-bounds\n"); + + /* + * We have to be careful not to hit the guard page. + * The MMU will catch that and crash us. + */ + area =3D vmalloc(3000); + if (!area) { + pr_err("Allocation failed\n"); + return; + } + + ((volatile char *)area)[3100]; + vfree(area); +} +#else +static void __init vmalloc_oob(void) {} +#endif + static int __init kmalloc_tests_init(void) { /* @@ -793,6 +818,7 @@ static int __init kmalloc_tests_init(void) kasan_strings(); kasan_bitops(); kmalloc_double_kzfree(); + vmalloc_oob(); =20 kasan_restore_multi_shot(multishot); =20 --=20 2.20.1