From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754887Ab0HCEm5 (ORCPT ); Tue, 3 Aug 2010 00:42:57 -0400 Received: from xenotime.net ([72.52.115.56]:38974 "HELO xenotime.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751189Ab0HCEm4 (ORCPT ); Tue, 3 Aug 2010 00:42:56 -0400 Date: Mon, 2 Aug 2010 21:42:49 -0700 From: Randy Dunlap To: Donald Parsons Cc: Harald Hoyer , Bjorn Helgaas , linux-kernel , Linus Torvalds Subject: Re: Linux 2.6.35 Message-Id: <20100802214249.b0fee617.rdunlap@xenotime.net> In-Reply-To: <1280802701.5836.10.camel@falcon.homelinux.org> References: <1280716262.5125.42.camel@falcon.homelinux.org> <201008012138.39036.bjorn.helgaas@hp.com> <1280722876.5125.83.camel@falcon.homelinux.org> <1280802701.5836.10.camel@falcon.homelinux.org> Organization: YPO4 X-Mailer: Sylpheed 2.7.1 (GTK+ 2.16.6; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 02 Aug 2010 22:31:41 -0400 Donald Parsons wrote: > On Mon, 2010-08-02 at 18:08 +0200, Harald Hoyer wrote: > > On Mon, Aug 2, 2010 at 6:21 AM, Donald Parsons wrote: > > > On Sun, 2010-08-01 at 21:38 -0600, Bjorn Helgaas wrote: > > >> On Sunday, August 01, 2010 08:31:02 pm Donald Parsons wrote: > > >> > 2.6.35 still fails to boot for me, as first reported here: > > >> > http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/01144.html > > >> > > > >> > I've manually bisected it down to around May 20 between > > >> > 2.6.34-git4 (boots) and 2.6.34-git5 (boot fails) > > >> > Also -git[23] boot, and -git8, -rc[126], rc6-git[136] all fail. > > >> > > > >> > Unfortunately first time I tried was with 2.6.35-rc6 and > > >> > it failed to boot. > > >> > > > >> > Failure when switching from initramfs to real /root? > > >> > Removing kernel "quiet" param appears to show several > > >> > lines listing: > > >> > > > >> > usb drives/hubs? followed by > > >> > dracut switching root (when booting works) > > >> > or > > >> > usb drives/hubs? followed by > > >> > (missing dracut... line) > > >> > No root device found > > >> > Boot has failed, sleeping forever. (when it does not boot) > > >> > > > >> > Grub, typical entry: > > >> > title Fedora (2.6.35) > > >> > root (hd0,0) > > >> > kernel /vmlinuz-2.6.35 ro > > >> > root=UUID=686dc496-8814-4c36-8fb7-5ded2916e825 rhgb > > >> > SYSFONT=latarcyrheb-sun16 LANG=en_US.UTF-8 KEYTABLE=us > > >> > rdblacklist=nouveau init=/sbin/bootchartd > > >> > initrd /initramfs-2.6.35.img > > >> > > > >> > > > >> > My boot failure seems to be different than other two reported > > >> > in the thread "2.6.35-rc6-git6: Reported regressions from 2.6.34" > > >> > under Bug #16173 and #16228 > > >> > > >> Will it boot with the "pci=nocrs" option? If so, please open a > > > > > > No, I tried this on a few attempts when I saw it mentioned under > > > bug #16228. But it had no effect/benefit. Sorry, I should have > > > mentioned this. > > > > > >> report at https://bugzilla.kernel.org, mark it a regression, assign > > >> it to me, and attach the complete dmesg log. And please respond to > > >> this thread with a pointer to the bugzilla. > > >> > > >> Otherwise, a complete console log should have a clue. The best > > >> thing would be a log from a serial console or netconsole, with > > >> "ignore_loglevel". > > > > > > Maybe I will try netconsole tomorrow. But is Ethernet up when > > > this boot failure happens? I think not, since initramfs should > > > not need networking. > > > > > > Should I try building sata driver into kernel? Oh, I am using > > > ext3, and fdisk -l shows: > > > > # dracut --add-drivers "sata" .... > > > > or edit /etc/dracut.conf: > > > > add_drivers+=" sata " > > But the kernel used to boot with same identical modules before > but not after 2.6.34-git4. > -------- > > Using your suggestion as to where the problem lies, I investigated > more deeply and found: > > I've now got 2.6.35-rc6-git3 to boot (and almost certainly 2.6.35 final) > > Make oldconfig broke at the transition where boot began failed, ie, > between 2.6.34-git4 and 2.6.34-git5. Even though modules are the > same, boot fails. If I use gconfig and set CONFIG_SATA_AHCI=y > instead of CONFIG_SATA_AHCI=m it works, except cannot select =y > unless CONFIG_ATA changed from m to y. > > So at some point in past, make oldconfig had apparently changed > CONFIG_SATA_AHCI from y to m and system still booted. But between > 2.6.34-git4 and 2.6.34-git5 the ability to boot was lost. > > So make oldconfig is not 100% trustworthy in this case. I do not > know if this is a problem that should be fixed. Ask if you want > any .config diffs. > > I am going to reboot with 2.6.35 to make sure it boots. Yes! > > I consider this boot problem solved unless someone wants to > improve "make oldconfig" behavior. It would be good to be able to explain what you are seeing & describing, so yes, if you can send a .config file that exhibits the problem, I'd love to look at it. thanks, --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code ***