Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752307AbdLNNYi (ORCPT ); Thu, 14 Dec 2017 08:24:38 -0500 Received: from Galois.linutronix.de ([146.0.238.70]:37455 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751925AbdLNNYh (ORCPT ); Thu, 14 Dec 2017 08:24:37 -0500 Date: Thu, 14 Dec 2017 14:24:22 +0100 (CET) From: Thomas Gleixner To: Linus Torvalds cc: Bjorn Helgaas , Maarten Lankhorst , Michal Hocko , "Rafael J. Wysocki" , Andy Lutomirski , Linux Kernel Mailing List , the arch/x86 maintainers , Daniel Vetter , Bjorn Helgaas , "Rafael J. Wysocki" , linux-pci@vger.kernel.org, linux-pm@vger.kernel.org Subject: Re: Linux 4.15-rc2: Regression in resume from ACPI S3 In-Reply-To: Message-ID: References: <168050887.sZlTFXWCmO@aspire.rjw.lan> <20171206121452.GA6320@dhcp22.suse.cz> <0f1d3d63-fa10-5cef-8014-81753dc60243@mblankhorst.nl> <57c8679e-1b88-c9ad-2299-2bea7560b28f@mblankhorst.nl> <20171213162336.GG53955@bhelgaas-glaptop.roam.corp.google.com> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 444 Lines: 13 On Thu, 14 Dec 2017, Thomas Gleixner wrote: > Now, what's different vs. 4.14: > > The 4.14 code accidentaly had the irq descriptor for this vector still > populated in the old CPU due to the convoluted way the vector allocation > worked. I have still to investigate if one of those cases is actually > leaking the descriptor, which would be a fatal bug. It doesn't leak. It repopulates it at the same place out of sheer luck. Thanks, tglx