From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934739AbdBQRFO (ORCPT ); Fri, 17 Feb 2017 12:05:14 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:41676 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934122AbdBQRFM (ORCPT ); Fri, 17 Feb 2017 12:05:12 -0500 Date: Fri, 17 Feb 2017 18:05:08 +0100 From: Pavel Machek To: Thomas Gleixner Cc: Frederic Weisbecker , Linus Torvalds , wanpeng.li@hotmail.com, Peter Zijlstra , Rik van Riel , "# .39.x" , "linux-pci@vger.kernel.org" , Greg Kroah-Hartman , Alan Stern , Linux Kernel Mailing List , Bjorn Helgaas , USB list Subject: Re: v4.10-rc8 (-rc6) boot regression on Intel desktop, does not boot after cold boots, boots after reboot Message-ID: <20170217170508.GA20884@amd> References: <20170215232005.GA7877@amd> <20170216111144.GA12377@amd> <20170216172535.GA7868@amd> <20170216181353.GB4357@lerouge> <20170216183421.GC4357@lerouge> <20170217140449.GA4521@lerouge> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="LQksG6bCIzRHxTLp" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --LQksG6bCIzRHxTLp Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri 2017-02-17 17:37:47, Thomas Gleixner wrote: > On Fri, 17 Feb 2017, Frederic Weisbecker wrote: > > On Thu, Feb 16, 2017 at 08:34:45PM +0100, Thomas Gleixner wrote: > > > On Thu, 16 Feb 2017, Frederic Weisbecker wrote: > > > > On Thu, Feb 16, 2017 at 10:20:14AM -0800, Linus Torvalds wrote: > > > > > On Thu, Feb 16, 2017 at 10:13 AM, Frederic Weisbecker > > > > > wrote: > > > > > > > > > > > > I haven't followed the discussion but this patch has a known is= sue which is fixed > > > > > > with: > > > > > > 7bdb59f1ad474bd7161adc8f923cdef10f2638d1 > > > > > > "tick/nohz: Fix possible missing clock reprog after tick so= ft restart" > > > > > > > > > > > > I hope this fixes your issue. > > > > >=20 > > > > > No, Pavel saw the problem with rc8 too, which already has that fi= x. > > > > >=20 > > > > > So I think we'll just need to revert that original patch (and that > > > > > means that we have to revert the commit you point to as well, sin= ce > > > > > that ->next_tick field was added by the original commit). > > > >=20 > > > > Aw too bad, but indeed that late we don't have the choice. > > >=20 > > > Hint: Look for CPU hotplug interaction of these patches. I bet someth= ing > > > becomes stale when the CPU goes down and does not get reset when it c= omes > > > back online. > >=20 > > Indeed I should check that. But Pavel is seeing this on boot, where the >=20 > I don't think so. He observed it on suspend resume and by doing hotplug > operations in a loop. But I might be wrong as usual. These are different bugs. On x60, I see failures doing hotplug/unplug in a loop, or lot of suspends. Someone seen it in v4.8-stable etc. Old bug. Rare to hit. Desktop machine was failing to boot, and had some fun with suspend/resume too. Boot hang was reproducible with right procedure. (Hard poweroff, cold boot.). That one was introduced in 4.10-rc cycle. Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --LQksG6bCIzRHxTLp Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlinLUQACgkQMOfwapXb+vLyZACfd/3P/zgPSQoo5wdRIJHbcUe2 lPUAniMnY/fy7jjaHgxRBpIyuePdExQV =0T7k -----END PGP SIGNATURE----- --LQksG6bCIzRHxTLp--