linux-kernel - Re: [Bug 10872] x86_64 boot hang when CONFIG

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Date:	Sun, 15 Jun 2008 22:14:58 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	"Yinghai Lu" <yhlu.kernel@...il.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: [Bug 10872] x86_64 boot hang when CONFIG_NUMA=n

On Sun, 15 Jun 2008 21:12:35 -0700 Yinghai Lu wrote:

> On Sun, Jun 15, 2008 at 6:11 PM, Randy Dunlap <randy.dunlap@...cle.com> wrote:
> > On Sun, 15 Jun 2008 12:18:42 -0700 Yinghai Lu wrote:
> >
> >> On Sun, Jun 15, 2008 at 9:35 AM, Randy Dunlap <randy.dunlap@...cle.com> wrote:
> >> > On Sat, 14 Jun 2008 22:12:04 +0200 (CEST) Rafael J. Wysocki wrote:
> >> >
> >> >> This message has been generated automatically as a part of a report
> >> >> of recent regressions.
> >> >>
> >> >> The following bug entry is on the current list of known regressions
> >> >> from 2.6.25.  Please verify if it still should be listed.
> >> >>
> >> >>
> >> >> Bug-Entry     : http://bugzilla.kernel.org/show_bug.cgi?id=10872
> >> >> Subject               : x86_64 boot hang when CONFIG_NUMA=n
> >> >> Submitter     : Randy Dunlap <randy.dunlap@...cle.com>
> >> >> Date          : 2008-06-05 21:50 (10 days old)
> >> >> References    : http://marc.info/?l=linux-kernel&m=121270308607116&w=4
> >> >>                 http://lkml.org/lkml/2008/6/11/355
> >> >> Handled-By    : Yinghai Lu <yhlu.kernel@...il.com>
> >> >
> >> > Yes, still happens for me on 2.6.26-rc6-git2.
> >> >
> >>
> >> please send out whole boot log with numa on and numa off
> >> and boot with debug
> >>
> >> please apply attached debug patch too.
> >
> > OK, did all of that.
> > I should probably note that in both cases, the kernel is loaded/booted by using kexec.
> > Both boot logs are captured generated via netconsole.
> >
> > The failing boot log is netcon-4409.log.  The working boot log (CONFIG_NUMA=y) is
> > netcon-4410.log.  Enabling CONFIG_NUMA makes the following changes:
> >
> > 4c4
> > < # Sun Jun 15 15:00:56 2008
> > ---
> >> # Sun Jun 15 15:10:15 2008
> > 241c241,246
> > < # CONFIG_NUMA is not set
> > ---
> >> CONFIG_NUMA=y
> >> CONFIG_K8_NUMA=y
> >> CONFIG_X86_64_ACPI_NUMA=y
> >> CONFIG_NODES_SPAN_OTHER_NODES=y
> >> # CONFIG_NUMA_EMU is not set
> >> CONFIG_NODES_SHIFT=6
> > 249a255
> >> CONFIG_NEED_MULTIPLE_NODES=y
> > 260a267
> >> CONFIG_MIGRATION=y
> > 282a290
> >> CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID=y
> > 309a318
> >> CONFIG_ACPI_NUMA=y
> >
> 
> the print out looks all right.
> 
> any chance to use normal serial console to capture the boot log?

Not that I know of.

---
~Randy
'"Daemon' is an old piece of jargon from the UNIX operating system,
where it referred to a piece of low-level utility software, a
fundamental part of the operating system."
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