From patchwork Sun Dec 1 01:54:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11268365 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 12E3E921 for ; Sun, 1 Dec 2019 01:54:58 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D4707206E1 for ; Sun, 1 Dec 2019 01:54:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="01Jo+efR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D4707206E1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 35F346B0313; Sat, 30 Nov 2019 20:54:56 -0500 (EST) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 2E8706B0318; Sat, 30 Nov 2019 20:54:56 -0500 (EST) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1B3326B0319; Sat, 30 Nov 2019 20:54:56 -0500 (EST) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0204.hostedemail.com [216.40.44.204]) by kanga.kvack.org (Postfix) with ESMTP id E4EC26B0313 for ; Sat, 30 Nov 2019 20:54:55 -0500 (EST) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with SMTP id 9B1522A87 for ; Sun, 1 Dec 2019 01:54:55 +0000 (UTC) X-FDA: 76214904150.15.sleet04_2afbd2379a32a X-Spam-Summary: 2,0,0,1fe31cdc7831a6a3,d41d8cd98f00b204,akpm@linux-foundation.org,:akpm@linux-foundation.org:aryabinin@virtuozzo.com:christophe.leroy@c-s.fr:dja@axtens.net:dvyukov@google.com:glider@google.com:gor@linux.ibm.com::mark.rutland@arm.com:mm-commits@vger.kernel.org:torvalds@linux-foundation.org,RULES_HIT:41:355:379:800:960:966:967:973:988:989:1260:1263:1345:1381:1431:1437:1534:1541:1711:1730:1747:1777:1792:2196:2199:2393:2525:2559:2563:2682:2685:2693:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3352:3865:3866:3867:3868:3874:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4250:4321:4385:5007:6261:6653:6737:7576:7903:8599:9025:9545:10004:10913:11026:11473:11658:11914:12043:12048:12291:12296:12297:12438:12517:12519:12555:12679:12783:12986:13069:13311:13357:13846:14181:14384:14721:14849:21080:21451:21627:21939:30054,0,RBL:error,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Cust om_rules X-HE-Tag: sleet04_2afbd2379a32a X-Filterd-Recvd-Size: 3051 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf19.hostedemail.com (Postfix) with ESMTP for ; Sun, 1 Dec 2019 01:54:55 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 51A3020880; Sun, 1 Dec 2019 01:54:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575165294; bh=vgxK+npNQhmQ19/EAy9lp8EOiwns+9NoJTKRZ63mP70=; h=Date:From:To:Subject:From; b=01Jo+efR7X4IkBdJv6xxwmzaMEN0CcRLxuBBeTdCfRjSM9v9pLwW96zXafKFFXslP Rh6JCfmpOrvypoosH4UIins+NjtPexky4b+pgO6biAgwXRh8QuUH55tvhLSscqZIMD M3iG56FijDAMhp2RQuJk4GhOTJRBep6zecWWVP2Y= Date: Sat, 30 Nov 2019 17:54:53 -0800 From: akpm@linux-foundation.org To: akpm@linux-foundation.org, aryabinin@virtuozzo.com, christophe.leroy@c-s.fr, dja@axtens.net, dvyukov@google.com, glider@google.com, gor@linux.ibm.com, linux-mm@kvack.org, mark.rutland@arm.com, mm-commits@vger.kernel.org, torvalds@linux-foundation.org Subject: [patch 094/158] kasan: add test for vmalloc Message-ID: <20191201015453.iMLeakr_q%akpm@linux-foundation.org> User-Agent: s-nail v14.8.16 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: From: Daniel Axtens Subject: kasan: add test for vmalloc Test kasan vmalloc support by adding a new test to the module. Link: http://lkml.kernel.org/r/20191031093909.9228-3-dja@axtens.net Signed-off-by: Daniel Axtens Reviewed-by: Andrey Ryabinin Cc: Alexander Potapenko Cc: Christophe Leroy Cc: Dmitry Vyukov Cc: Mark Rutland Cc: Vasily Gorbik Signed-off-by: Andrew Morton --- lib/test_kasan.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) --- a/lib/test_kasan.c~kasan-add-test-for-vmalloc +++ a/lib/test_kasan.c @@ -19,6 +19,7 @@ #include #include #include +#include #include @@ -748,6 +749,30 @@ static noinline void __init kmalloc_doub kzfree(ptr); } +#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 = 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(voi kasan_strings(); kasan_bitops(); kmalloc_double_kzfree(); + vmalloc_oob(); kasan_restore_multi_shot(multishot);