Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761531Ab2J3AGc (ORCPT ); Mon, 29 Oct 2012 20:06:32 -0400 Received: from ogre.sisk.pl ([193.178.161.156]:44823 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752117Ab2J3AGa (ORCPT ); Mon, 29 Oct 2012 20:06:30 -0400 From: "Rafael J. Wysocki" To: Linux Kernel Mailing List Cc: Linus Torvalds , Linux PM list , Greg Kroah-Hartman Subject: Re: Linux 3.7-rc3 Date: Tue, 30 Oct 2012 01:10:32 +0100 Message-ID: <26004880.qboZkUVCy9@vostro.rjw.lan> User-Agent: KMail/4.8.5 (Linux/3.7.0-rc3; KDE/4.8.5; x86_64; ; ) In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1907 Lines: 43 On Sunday, October 28, 2012 12:59:49 PM Linus Torvalds wrote: > It's been a week, time for -rc3! > > Nothing particularly stands out here. Lots of small fixes, exemplified > by the series of memory leak fixes in usb serial drivers. Just a lot > of random stuff.. > > Most of it is drivers (all over: drm, wireless, staging, usb, sound), > but there's a few filesystem updates (nfs, btrfs, ext4), arch updates > (arm, x86 and m68k) and just random stuff. Shortlog appended. Unfortunately, s2disk is broken with this one and previous -rc. In the majority of cases it just hangs the machine during hibernation, although sometimes it returns to user space reporting freezing problems, suspicions RCU usage and similar stuff, pretty much without any useful debug information. I'm quite confident that v3.6 was OK (and -stable based on that too), so it most likely is a recent regression. The in-kernel hibernation (ie. "echo disk > /sys/power/state") works no problem. So does suspend to RAM on my test boxes. So far I have been able to reproduce this 100% of the time on two machines with Intel CPUs and graphics driven by i915. I _suspect_ that this may be related to VT switching, because s2disk does some ugly things in that area which are not done by the in-kernel code. Dunno. Anyway, it looks like nothing short of bisection is going to help debug this, but I'm afraid I won't have the time to bisect within the next two weeks, so if anyone can reproduce this issue and will be able to bisect it, please help (openSUSE/Tumbleweed users anyone?). Thanks, Rafael -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/