RE: Help: strange messages from kernel on IA64 platform

["Ju, Seokmann" <Seokmann.Ju@lsil.com>]

On Wednesday, July 12, 2006 4:20 AM, Sakurai Hiroomi wrote:
> When GAM(Global Array Manager) is started, The following 
> message output.
> kernel: kernel unaligned access to 0xe0000001fe1080d4, 
> ip=0xa000000200053371
This is a patch required to address  the issue.
Thank you for the patch.

Seokmann

> -----Original Message-----
> From: linux-scsi-owner@vger.kernel.org 
> [mailto:linux-scsi-owner@vger.kernel.org] On Behalf Of Sakurai Hiroomi
> Sent: Wednesday, July 12, 2006 4:20 AM
> To: linux-scsi@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: Re: Help: strange messages from kernel on IA64 platform
> 
> Hi,
> 
> I saw same message.
> 
> When GAM(Global Array Manager) is started, The following 
> message output.
> kernel: kernel unaligned access to 0xe0000001fe1080d4, 
> ip=0xa000000200053371
> 
> The uioc structure used by ioctl is defined by packed,
> the allignment of each member are disturbed.
> In a 64 bit structure, the allignment of member doesn't fit 64 bit
> boundary. this causes this messages.
> In a 32 bit structure, we don't see the message because the allinment
> of member fit 32 bit boundary even if packed is specified. 
> 
> patch
> I Add 32 bit dummy member to fit 64 bit boundary. I tested.
> We confirmed this patch fix the problem by IA64 server.
> 
> **************************************************************
> ****************
> --- linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h.orig	
> 2006-04-03 17:13:03.000000000 +0900
> +++ linux-2.6.9/drivers/scsi/megaraid/megaraid_ioctl.h	
> 2006-04-03 17:14:09.000000000 +0900
> @@ -132,6 +132,10 @@
>  /* Driver Data: */
>          void __user *           user_data;
>          uint32_t                user_data_len;
> +
> +        /* 64bit alignment */
> +        uint32_t                pad_0xBC;
> +
>          mraid_passthru_t        __user *user_pthru;
>  
>          mraid_passthru_t        *pthru32;
> **************************************************************
> ****************
> 
> I'm not participated in the linux-scsi mailing list.
> Please reply to the following addresses. 
> 
>     E-Mail : sakurai_hiro@soft.fujitsu.com
> 
> 
> Best regards,
> Hiroomi Sakurai
> 
> 
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