From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752534AbdBFUi2 (ORCPT ); Mon, 6 Feb 2017 15:38:28 -0500 Received: from mail-wm0-f65.google.com ([74.125.82.65]:35195 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752365AbdBFUi0 (ORCPT ); Mon, 6 Feb 2017 15:38:26 -0500 Subject: Re: Linux 4.9.6 ( Restore IO-APIC irq_chip retrigger callback , breaks my box ) To: "Ruslan Ruslichenko -X (rruslich - GLOBALLOGIC INC at Cisco)" , Greg KH References: <20170126074846.GA19870@kroah.com> <20170206174156.GB10441@kroah.com> <9bca3132-babd-24de-8e9a-7f7da8f70f7e@cisco.com> Cc: linux-kernel@vger.kernel.org, Andrew Morton , torvalds@linux-foundation.org, stable@vger.kernel.org, lwn@lwn.net, Jiri Slaby , Thomas Gleixner From: Gabriel C Message-ID: Date: Mon, 6 Feb 2017 21:38:22 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 MIME-Version: 1.0 In-Reply-To: <9bca3132-babd-24de-8e9a-7f7da8f70f7e@cisco.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06.02.2017 20:05, Ruslan Ruslichenko -X (rruslich - GLOBALLOGIC INC at Cisco) wrote: > On 02/06/2017 07:41 PM, Greg KH wrote: >> On Mon, Feb 06, 2017 at 06:30:15PM +0100, Gabriel C wrote: >>> On 26.01.2017 08:48, Greg KH wrote: >>> >>> Hi Greg, >>> >>>> I'm announcing the release of the 4.9.6 kernel. >>> >>> Somewhat late , however I didn't tested 4.9.6 but jumped from 4.9.5 to 4.9.7 >>> and found out by box won't boot anymore. >>> >>> It hangs early and freeze with a lot RCU warnings. >>> Since I cannot setup a netconsole right now I cannot post the errors , really sorry. >>> >>> ( but I could make a picture if needed ) >>> >>> >>> I bisected it down to : >>> >>>> Ruslan Ruslichenko (1): >>>> x86/ioapic: Restore IO-APIC irq_chip retrigger callback >>> Reverting this one fixes the problem for me.. >>> >>> Also this problem exists in Linus tree , I tested on: >>> 4.10.0-rc6-00167-ga0a28644c1cf >> Ok, at least we are consistent :) >> >>> The box is a PRIMERGY TX200 S5 , 2 socket , 2 x E5520 CPU(s) installed. >>> >>> Config: >>> https://raw.githubusercontent.com/frugalware/frugalware-current/master/source/base/kernel/config.x86_64 >> Ruslan, any thoughts about what to do here? > This looks strange. What this patch does is just revert previous > behavior, broken by d32932d02e18. > So we can try to test with last v4.1 stable, where retrigger callback > were still present. I can test that but first on weekend if you wish. > Also on v4.10 maybe check with software emulation of this feature and > reverted patch, e.g.: > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index e487493..49c3c71 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -170,6 +170,7 @@ config X86 > select USER_STACKTRACE_SUPPORT > select VIRT_TO_BUS > select X86_FEATURE_NAMES if PROC_FS > + select HARDIRQS_SW_RESEND > > config INSTRUCTION_DECODER > def_bool y > With patch reverted + this one I get a early kernel panic.. on 4.10.0-rc7 With just the patch reverted all is fine , the box boots and all seems fine. > I think for further debugging logs will be needed. Yes sure , I just need to find a way to set something up like netconsole here. Right now I have no way doig that. I'll try to do that on weekend too also. Regards, Gabriel C