linux-kernel - Re: hang on early boot, numa init code stack overflow?

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Date:	Thu, 23 Jan 2014 07:39:27 +0800
From:	Tang Chen <tangchen@...fujitsu.com>
To:	Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: hang on early boot, numa init code stack overflow?

On 01/23/2014 12:32 AM, Dave Jones wrote:
> I'm seeing a hang during boot on my test box running the current tree,
> It doesn't always happen, perhaps one in five boots.
> I managed to get a partial trace after booting with earlyprintk=vga
>
> dump_stack
> panic
> ? numa_clear_kernel_node_hotplug
> __stack_chk_fail
> numa_clear_kernel_node_hotplug
> ? memblock_search_pfn_nid
> ? __early_pfn_to_nid
> numa_init
> x86_numa_init
> initmem_init
> setup_arch
> start_kernel
>
> Looks like something overflowed the stack.
> This is just a quad-core i5, nothing fancy numa-wise.
>
> This code was added in a0acda917284183f9b71e2d08b0aa0aea722b321

Will send a patch to fix it today.

Thanks.

>
> 	Dave
>
>
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