From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754728AbaKNS1f (ORCPT ); Fri, 14 Nov 2014 13:27:35 -0500 Received: from mga14.intel.com ([192.55.52.115]:18984 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750872AbaKNS1d (ORCPT ); Fri, 14 Nov 2014 13:27:33 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,862,1389772800"; d="scan'208";a="416622245" From: "Luck, Tony" To: Andy Lutomirski CC: Oleg Nesterov , Borislav Petkov , X86 ML , "linux-kernel@vger.kernel.org" , Peter Zijlstra , "Andi Kleen" Subject: RE: [RFC PATCH] x86, entry: Switch stacks on a paranoid entry from userspace Thread-Topic: [RFC PATCH] x86, entry: Switch stacks on a paranoid entry from userspace Thread-Index: AQHP/s7+MsolZCiViEiCPzqCVeTRAJxdoOwAgACR1oD//3yvMIAAtdCAgAB2NOCAAM3pAP//e6+AgACK+ACAAAdiAIAAGwAAgACUXsCAAAvQcA== Date: Fri, 14 Nov 2014 18:27:23 +0000 Message-ID: <3908561D78D1C84285E8C5FCA982C28F3293A894@ORSMSX114.amr.corp.intel.com> References: <20141112220058.GA5295@redhat.com> <3908561D78D1C84285E8C5FCA982C28F3292BAB4@ORSMSX114.amr.corp.intel.com> <3908561D78D1C84285E8C5FCA982C28F3292BD44@ORSMSX114.amr.corp.intel.com> <3908561D78D1C84285E8C5FCA982C28F3292CB9A@ORSMSX114.amr.corp.intel.com> <3908561D78D1C84285E8C5FCA982C28F3292D57B@ORSMSX114.amr.corp.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.22.254.140] Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by nfs id sAEIRfdK002801 >> It adds debugging for inappropriate reschedules from the wrong stack. >> Setting CONFIG_DEBUG_ATOMIC_SLEEP might also be a good idea. > > Will add that for next build/test Didn't see anything new. System died at 1108 recoveries with the "Timeout synchronization ..." panic -Tony {.n++%ݶw{.n+{G{ayʇڙ,jfhz_(階ݢj"mG?&~iOzv^m ?I