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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 A3743C3A5A6 for ; Thu, 19 Sep 2019 22:10:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6F0C121928 for ; Thu, 19 Sep 2019 22:10:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568931025; bh=WxaMEKrG7MelREYobpfsgDzwoREu3G2l4m4/3rQ6iUc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=S8Vz/TQIGAYwwvBFV6SDaeuEnZ0cHHLdewFJZTRDU1kONuELyJb2FWcUTKgqvLde0 sFP09FBYTrh3uQNadaNPRE3H4yL5XtZ4tvahRXpBpTjBN1vyWouDoJuLdQbxH5vPRw 3UnAmjebA06As5j7uwttFgiHDqRLVC5CYyA4Ge/o= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393534AbfISWKY (ORCPT ); Thu, 19 Sep 2019 18:10:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:48760 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2405665AbfISWKW (ORCPT ); Thu, 19 Sep 2019 18:10:22 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 B9F9721907; Thu, 19 Sep 2019 22:10:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568931022; bh=WxaMEKrG7MelREYobpfsgDzwoREu3G2l4m4/3rQ6iUc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rw4mjvxoHRwir47thhV5Z5wAI7Gr9sj+RGOMXxQI2b8us+n7aDMfp4nX/FkV9Y6Vx 0XmAJXJSJCp/qoWD06cG5c3iDsiq4Njlc+XFZCyxcAFCuQyeqNvz0LxfQMciUyR1XM k26wvatE2P9nTyi3YYoPQhjHDDJrP6YbJSK1FYiA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Naoya Horiguchi , Len Brown , Sasha Levin Subject: [PATCH 5.2 098/124] tools/power turbostat: fix buffer overrun Date: Fri, 20 Sep 2019 00:03:06 +0200 Message-Id: <20190919214822.627247848@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190919214819.198419517@linuxfoundation.org> References: <20190919214819.198419517@linuxfoundation.org> User-Agent: quilt/0.66 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 From: Naoya Horiguchi [ Upstream commit eeb71c950bc6eee460f2070643ce137e067b234c ] turbostat could be terminated by general protection fault on some latest hardwares which (for example) support 9 levels of C-states and show 18 "tADDED" lines. That bloats the total output and finally causes buffer overrun. So let's extend the buffer to avoid this. Signed-off-by: Naoya Horiguchi Signed-off-by: Len Brown Signed-off-by: Sasha Levin --- tools/power/x86/turbostat/turbostat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 0ffbbcac4d19d..752cb4c0fde6b 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -5125,7 +5125,7 @@ int initialize_counters(int cpu_id) void allocate_output_buffer() { - output_buffer = calloc(1, (1 + topo.num_cpus) * 1024); + output_buffer = calloc(1, (1 + topo.num_cpus) * 2048); outp = output_buffer; if (outp == NULL) err(-1, "calloc output buffer"); -- 2.20.1