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=-6.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 124B0C677D4 for ; Mon, 8 Oct 2018 18:51:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CC658214C4 for ; Mon, 8 Oct 2018 18:51:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Kzyoe0nR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC658214C4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732261AbeJICEP (ORCPT ); Mon, 8 Oct 2018 22:04:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:53944 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729987AbeJICEO (ORCPT ); Mon, 8 Oct 2018 22:04:14 -0400 Received: from localhost (ip-213-127-77-176.ip.prioritytelecom.net [213.127.77.176]) (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 DF288204FD; Mon, 8 Oct 2018 18:51:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1539024667; bh=GaM1TTIMOsq2lReM5X/NqEWOwuL68uCNRShwsRWosK8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Kzyoe0nRXwI27ALxsZXlIgedoy/RstgpTzb9MGkSmBFf8iA5/EOQ2iuhZS48NU+5u EGRz699WhaNAhLSeYA6HzrSfSGDdYp/G6IyRkZOfAqlhIAAb74AcwjV/9Ad0bqjhuX s4eYRnAew245ybiaVb1mOV0hrGDrz+JnJo9Cy1Ew= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chris Phlipot , Namhyung Kim , Peter Zijlstra , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH 4.18 091/168] perf util: Fix bad memory access in trace info. Date: Mon, 8 Oct 2018 20:31:11 +0200 Message-Id: <20181008175623.521618427@linuxfoundation.org> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20181008175620.043587728@linuxfoundation.org> References: <20181008175620.043587728@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chris Phlipot [ Upstream commit a72f64261359b7451f8478f2a2bf357b4e6c757f ] In the write to the output_fd in the error condition of record_saved_cmdline(), we are writing 8 bytes from a memory location on the stack that contains a primitive that is only 4 bytes in size. Change the primitive to 8 bytes in size to match the size of the write in order to avoid reading unknown memory from the stack. Signed-off-by: Chris Phlipot Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20180829061954.18871-1-cphlipot0@gmail.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- tools/perf/util/trace-event-info.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/tools/perf/util/trace-event-info.c +++ b/tools/perf/util/trace-event-info.c @@ -377,7 +377,7 @@ out: static int record_saved_cmdline(void) { - unsigned int size; + unsigned long long size; char *path; struct stat st; int ret, err = 0;