Date: Tue, 16 May 2006 16:00:14 -0500 (CDT)
From: Chase Venters <chase.venters@clientec.com>
To: "Ju, Seokmann" <Seokmann.Ju@lsil.com>
cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       linux-scsi@vger.kernel.org
Subject: Re: Help: strange messages from kernel on IA64 platform
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On Tue, 16 May 2006, Ju, Seokmann wrote:

> Hi,
>
> During communication in between application and megaraid driver via
> IOCTL, the system displays messages which are not easy to track down.
> Following is one of the messages and same messages with different values
> are poping up regularly.
> ---
> Kernel unaligned access to 0xe00000007f3d80dc ip=0xa0000002000373b1
> ---
>
> I understand the kernel is complaining about the address which is not
> aligned and, found the message is coming from function
> 'ia64_handle_unaligned()' in the arch/ia64/kernel/unaligned.c.
> But, I couldn't find who is calling this function and further details of
> reasons.
>
> Where should I start to figure out it?

It's a trap, which means the CPU is effectively calling that function. My 
best suggestion is to figure out what data is at 0xe00000007f3d80dc and 
what instructions are at 0xa0000002000373b1.

> Thank you,
>
> Seokmann

Thanks,
Chase
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