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Message-Id: <20100803153401.6534dfcd.rdunlap@xenotime.net> Date: Tue, 3 Aug 2010 15:34:01 -0700 From: Randy Dunlap <rdunlap@...otime.net> To: Donald Parsons <dparsons@...ghtdsl.net> Cc: Stefan Richter <stefanr@...6.in-berlin.de>, Harald Hoyer <harald.hoyer@...il.com>, Bjorn Helgaas <bjorn.helgaas@...com>, linux-kernel <linux-kernel@...r.kernel.org>, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: Linux 2.6.35 On Tue, 03 Aug 2010 13:45:45 -0400 Donald Parsons wrote: > On Tue, 2010-08-03 at 09:40 -0700, Randy Dunlap wrote: > > On Tue, 03 Aug 2010 12:26:50 -0400 Donald Parsons wrote: > > > > > Resending to all... > > > On Mon, 2010-08-02 at 21:42 -0700, Randy Dunlap wrote: > > > > 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 <dparsons@...ghtdsl.net> 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 > > > > > > > > > Okay, here is the diff between 2.6.34-git4 and 2.6.34-git5 > > > It should be equivalent to make silentoldconfig as I made no > > > changes, just enter to accept defaults. The git4 boots and > > > git5 does not boot. (Both based off 2.6.34.1.config) > > > > Yes, I had just generated this same diff. > > The only config change that could remotely make a difference is: > > > +# CONFIG_SATA_AHCI_PLATFORM is not set > > > > and I don't see how it could matter. > > > > > (and attached config-2.6.34-git4.gz, because .config was too > > > big for mail list last time.) > > > > Last time being recently? lkml accepts email sizes (with attachments) > > up to 300 KB, IIRC. > > Maybe http://lkml.indiana.edu/hypermail/linux/kernel/1008.0/index.html > throws out large email but the actual lkml does not? I did not see > it show up; here is header of email that had large (56.48K) .config: > > From: Donald Parsons > To: Randy Dunlap > Cc: linux-kernel <linux-kernel@...r.k.o>, Linus Torvalds > Subject: Re: Linux 2.6.35 > Date: 08/01/2010 11:41:31 PM (this is EDT) > Mailer: Evolution 2.28.3 (2.28.3-1.fc12) > > > > > --- config-2.6.34-git4 2010-08-01 19:52:48.000000000 -0400 > > > +++ config-2.6.34-git5 2010-08-01 18:10:14.000000000 -0400 > > > @@ -1,7 +1,7 @@ > > > # > > > # Automatically generated make config: don't edit > ...deleted most lines... > > > -# > > > # CONFIG_STAGING is not set > > > CONFIG_X86_PLATFORM_DEVICES=y > > > # CONFIG_ACER_WMI is not set > > > > > > ------------------------------------------- > > > > > > Can possibly duplicate problem if you have a > > > sata based PC from last few years. > > > > > > Set CONFIG_ATA=m > > > > That's already =m in this config file. > > > > > and this becomes CONFIG_SATA_AHCI=m (cannot select=y) > > > > That's as expected. CONFIG_ATA value controls CONFIG_SATA_AHCI > > possible values. > > > > > > > > Then 2.6.34.[01] (probably 2 also) will boot. > > > Make silentoldconfig with this .config and see > > > that 2.6.35 will not boot. > > > > So with CONFIG_ATA=m and CONFIG_SATA_AHCI=m, does 2.6.34-git4 boot > > but 2.6.34-git5 fails to boot? > > Yes, that is exactly correct. OK, I built and booted 2.6.34-git4 and -git5 with your .config file and only default changes for -git5. They both booted successfully for me on an f11 box. I am not using dracut, if that matters. I don't know what to try next. --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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