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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,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 B490BC4CECE for ; Mon, 14 Oct 2019 10:37:03 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7CD9020854 for ; Mon, 14 Oct 2019 10:37:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7CD9020854 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2ED6E8E0006; Mon, 14 Oct 2019 06:37:03 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2C8178E0001; Mon, 14 Oct 2019 06:37:03 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1DB5F8E0006; Mon, 14 Oct 2019 06:37:03 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0247.hostedemail.com [216.40.44.247]) by kanga.kvack.org (Postfix) with ESMTP id EBC548E0001 for ; Mon, 14 Oct 2019 06:37:02 -0400 (EDT) Received: from smtpin03.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id 9F79682C9290 for ; Mon, 14 Oct 2019 10:37:02 +0000 (UTC) X-FDA: 76042037484.03.river08_3d567a05e241a X-HE-Tag: river08_3d567a05e241a X-Filterd-Recvd-Size: 2909 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by imf34.hostedemail.com (Postfix) with ESMTP for ; Mon, 14 Oct 2019 10:37:01 +0000 (UTC) X-UUID: 7dcb933b18764e979c3cfe88a285e36a-20191014 X-UUID: 7dcb933b18764e979c3cfe88a285e36a-20191014 Received: from mtkcas06.mediatek.inc [(172.21.101.30)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 752259523; Mon, 14 Oct 2019 18:36:57 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs08n2.mediatek.inc (172.21.101.56) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 14 Oct 2019 18:36:52 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 14 Oct 2019 18:36:52 +0800 From: Walter Wu To: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Matthias Brugger CC: , , , , , , Walter Wu Subject: [PATCH 2/2] kasan: add test for invalid size in memmove Date: Mon, 14 Oct 2019 18:36:54 +0800 Message-ID: <20191014103654.17982-1-walter-zh.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 Content-Type: text/plain X-TM-SNTS-SMTP: 0CF6CECFA4DBB0B2BBA0BF7B47F0B4713B9EC9875EB27669122A6B9E49B63E752000:8 X-MTK: N X-Bogosity: Ham, tests=bogofilter, spamicity=0.001608, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Test size is negative numbers in memmove in order to verify whether it correctly get KASAN report. Signed-off-by: Walter Wu --- lib/test_kasan.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/lib/test_kasan.c b/lib/test_kasan.c index 49cc4d570a40..06942cf585cc 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -283,6 +283,23 @@ static noinline void __init kmalloc_oob_in_memset(void) kfree(ptr); } +static noinline void __init kmalloc_memmove_invalid_size(void) +{ + char *ptr; + size_t size = 64; + + pr_info("invalid size in memmove\n"); + ptr = kmalloc(size, GFP_KERNEL); + if (!ptr) { + pr_err("Allocation failed\n"); + return; + } + + memset((char *)ptr, 0, 64); + memmove((char *)ptr, (char *)ptr + 4, -2); + kfree(ptr); +} + static noinline void __init kmalloc_uaf(void) { char *ptr; @@ -773,6 +790,7 @@ static int __init kmalloc_tests_init(void) kmalloc_oob_memset_4(); kmalloc_oob_memset_8(); kmalloc_oob_memset_16(); + kmalloc_memmove_invalid_size(); kmalloc_uaf(); kmalloc_uaf_memset(); kmalloc_uaf2(); -- 2.18.0