From patchwork Sat Sep 23 23:33:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Binbin Wu X-Patchwork-Id: 13400008 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 1DECDE80A99 for ; Wed, 27 Sep 2023 06:45:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229519AbjI0Gpo (ORCPT ); Wed, 27 Sep 2023 02:45:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55658 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229499AbjI0Gpn (ORCPT ); Wed, 27 Sep 2023 02:45:43 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2F382D6; Tue, 26 Sep 2023 23:45:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695797142; x=1727333142; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=fjpZ8Wfu81snskyoNajzNhzf6MUHxeEtKQbFHYozL5s=; b=G57yTHZfEk4IfBym6OT6Uutt71q3DYYJN0HguEwT6XM9K6flHjEOePHW 2x76FOLhF2EEYXWscoTagFP0ShwL4/yZzS8FB2xee/zaDdkPxKtJECXxD MHLYxtecSAElmOeVOmcpXFjkAWsoFwtv4Ne477HRkM7Su10OChbGE2oTe IVosohBslsubyx9Zdnoxckh02wYCRwQFlRbFNxD2T4ASh5Uxlm7TkLf8A ttrksbT28X9sO6fA1PIrwon7sKnZ2uuocR1GxvJd5z5ZkS20uFE7EEVHG +v302JGazsqmSrNFwB5cFQ6egBLU278GmFYLS1DvXwDcnPOMw1wVbBIvt g==; X-IronPort-AV: E=McAfee;i="6600,9927,10845"; a="361130910" X-IronPort-AV: E=Sophos;i="6.03,179,1694761200"; d="scan'208";a="361130910" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Sep 2023 23:45:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10845"; a="784212545" X-IronPort-AV: E=Sophos;i="6.03,179,1694761200"; d="scan'208";a="784212545" Received: from binbinwu-mobl.ccr.corp.intel.com (HELO binbinwu-mobl.sh.intel.com) ([10.238.8.84]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Sep 2023 23:45:38 -0700 From: Binbin Wu To: dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, shuah@kernel.org Cc: linux-kselftest@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, weihong.zhang@intel.com, kirill.shutemov@linux.intel.com, binbin.wu@linux.intel.com Subject: [PATCH] selftests/x86/lam: Zero out buffer for readlink() Date: Sun, 24 Sep 2023 07:33:46 +0800 Message-Id: <20230923233346.12726-1-binbin.wu@linux.intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Zero out the buffer for readlink() since readlink() does not append a terminating null byte to the buffer. Fixes: 833c12ce0f430 ("selftests/x86/lam: Add inherit test cases for linear-address masking") Signed-off-by: Binbin Wu --- tools/testing/selftests/x86/lam.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) base-commit: ce9ecca0238b140b88f43859b211c9fdfd8e5b70 diff --git a/tools/testing/selftests/x86/lam.c b/tools/testing/selftests/x86/lam.c index eb0e46905bf9..9f06942a8e25 100644 --- a/tools/testing/selftests/x86/lam.c +++ b/tools/testing/selftests/x86/lam.c @@ -680,7 +680,7 @@ static int handle_execve(struct testcases *test) perror("Fork failed."); ret = 1; } else if (pid == 0) { - char path[PATH_MAX]; + char path[PATH_MAX] = {0}; /* Set LAM mode in parent process */ if (set_lam(lam) != 0)