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Date: Thu, 07 Dec 2006 14:00:42 +0100
From: Michal Schmidt <xschmi00@stud.feec.vutbr.cz>
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To: Jaswinder Singh <jaswinderrajput@gmail.com>
CC: linux-kernel@vger.kernel.org
Subject: Re: What happen when hangs !!
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Jaswinder Singh wrote:
> Sometimes my machine hangs in userspace area like this :-
> 
> VFS: Mounted root (ext3 filesystem).
> Freeing init memory: 124K
> INIT:
> <<HANGS>>
> 
> OR
> 
> VFS: Mounted root (ext3 filesystem).
> Freeing init memory: 124K
> INIT: version 2.85 booting
> <<RUNNING SMOOTHLY>>
> 
> How can I debug this hang, what are the cases.

When it hangs, try to capture the list of processes using Alt+SysRq+T. 
You need to have CONFIG_MAGIC_SYSRQ enabled in the kernel.

Michal
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