Re: WARNING: at arch/x86/kernel/smpboot.c:324 topology_sane()

From: Fengguang Wu
Date: Thu Feb 06 2014 - 05:23:20 EST


On Thu, Feb 06, 2014 at 06:05:37PM +0800, Tang Chen wrote:
> On 02/06/2014 05:44 PM, Fengguang Wu wrote:
> >Hi Tang,
> >
> >We noticed the below warning and the first bad commit is
> >
> >commit e8d1955258091e4c92d5a975ebd7fd8a98f5d30f
> >Author: Tang Chen<tangchen@xxxxxxxxxxxxxx>
> >AuthorDate: Fri Feb 22 16:33:44 2013 -0800
> >Commit: Linus Torvalds<torvalds@xxxxxxxxxxxxxxxxxxxx>
> >CommitDate: Sat Feb 23 17:50:14 2013 -0800
> >
> > acpi, memory-hotplug: parse SRAT before memblock is ready
>
> Hi Wu,
>
> This patch has been droped a long time ago. It is not in the latest kernel.
>
> Now the memory hotplug implementation is done in a different way.

Great, and sorry for the noise! Yeah it's bisected between two old
kernels, I should have checked latest mainline kernel before reporting it.

Thanks,
Fengguang

> > arch/x86/kernel/setup.c | 13 +++++++++----
> > arch/x86/mm/numa.c | 6 ++++--
> > drivers/acpi/numa.c | 23 +++++++++++++----------
> > include/linux/acpi.h | 8 ++++++++
> > 4 files changed, 34 insertions(+), 16 deletions(-)
> >
> >[ 0.845092] smpboot: Booting Node 1, Processors #1
> >[ 0.864812] masked ExtINT on CPU#1
> >[ 0.868706] CPU1: Thermal LVT vector (0xfa) already installed
> >[ 0.875158] ------------[ cut here ]------------
> >[ 0.880330] WARNING: at arch/x86/kernel/smpboot.c:324 topology_sane.isra.2+0x6b/0x7c()
> >[ 0.891505] Hardware name: S2600CP
> >[ 0.895314] sched: CPU #1's llc-sibling CPU #0 is not on the same node! [node: 1 != 0]. Ignoring dependency.
> >
> >[ 0.906295] Modules linked in:
> >[ 0.909927] Pid: 0, comm: swapper/1 Not tainted 3.8.0-06530-ge8d1955 #1
> >[ 0.917314] Call Trace:
> >[ 0.920055] [<ffffffff81970409>] ? topology_sane.isra.2+0x6b/0x7c
> >[ 0.926963] [<ffffffff810bcd5d>] warn_slowpath_common+0x81/0x99
> >[ 0.933667] [<ffffffff810bcdc1>] warn_slowpath_fmt+0x4c/0x4e
> >[ 0.940092] [<ffffffff8196b565>] ? calibrate_delay+0xae/0x4ba
> >[ 0.946612] [<ffffffff810508ea>] ? __mcheck_cpu_init_timer+0x4a/0x4f
> >[ 0.953799] [<ffffffff81970409>] topology_sane.isra.2+0x6b/0x7c
> >[ 0.960509] [<ffffffff819706e0>] set_cpu_sibling_map+0x28c/0x43a
> >[ 0.967308] [<ffffffff81970a3c>] start_secondary+0x1ae/0x276
> >[ 0.973742] ---[ end trace db722b2086ba6d20 ]---
> >[ 0.999234] OK
> >[ 1.001655] smpboot: Booting Node 0, Processors #2
> >
> >Full dmesg and kconfig are attached.
> >
> >Thanks,
> >Fengguang
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