From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:38740 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752199AbdGCH6O (ORCPT ); Mon, 3 Jul 2017 03:58:14 -0400 Subject: Patch "perf/x86/intel/uncore: Fix wrong box pointer check" has been added to the 4.11-stable tree To: kan.liang@intel.com, gregkh@linuxfoundation.org, tglx@linutronix.de Cc: , From: Date: Mon, 03 Jul 2017 09:57:56 +0200 Message-ID: <149906867613898@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled perf/x86/intel/uncore: Fix wrong box pointer check to the 4.11-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: perf-x86-intel-uncore-fix-wrong-box-pointer-check.patch and it can be found in the queue-4.11 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 80c65fdb4c6920e332a9781a3de5877594b07522 Mon Sep 17 00:00:00 2001 From: Kan Liang Date: Thu, 29 Jun 2017 12:09:26 -0700 Subject: perf/x86/intel/uncore: Fix wrong box pointer check From: Kan Liang commit 80c65fdb4c6920e332a9781a3de5877594b07522 upstream. Should not init a NULL box. It will cause system crash. The issue looks like caused by a typo. This was not noticed because there is no NULL box. Also, for most boxes, they are enabled by default. The init code is not critical. Fixes: fff4b87e594a ("perf/x86/intel/uncore: Make package handling more robust") Signed-off-by: Kan Liang Signed-off-by: Thomas Gleixner Link: http://lkml.kernel.org/r/20170629190926.2456-1-kan.liang@intel.com Signed-off-by: Greg Kroah-Hartman --- arch/x86/events/intel/uncore.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/events/intel/uncore.c +++ b/arch/x86/events/intel/uncore.c @@ -1170,7 +1170,7 @@ static int uncore_event_cpu_online(unsig pmu = type->pmus; for (i = 0; i < type->num_boxes; i++, pmu++) { box = pmu->boxes[pkg]; - if (!box && atomic_inc_return(&box->refcnt) == 1) + if (box && atomic_inc_return(&box->refcnt) == 1) uncore_box_init(box); } } Patches currently in stable-queue which might be from kan.liang@intel.com are queue-4.11/perf-x86-intel-uncore-fix-wrong-box-pointer-check.patch