linux-kernel - Re: [PATCH] APEI/ERST: Fix error message formatting

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Date:	Wed, 24 Jul 2013 22:43:47 +0530
From:	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	LKML <linux-kernel@...r.kernel.org>, Borislav Petkov <bp@...e.de>,
	Anton Vorontsov <anton@...msg.org>,
	Colin Cross <ccross@...roid.com>,
	Kees Cook <keescook@...omium.org>,
	Tony Luck <tony.luck@...el.com>, Len Brown <lenb@...nel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-acpi@...r.kernel.org
Subject: Re: [PATCH] APEI/ERST: Fix error message formatting

On 2013/07/22 11:01PM, Borislav Petkov wrote:
> From: Borislav Petkov <bp@...e.de>
> 
> [    5.525861] ERST: Can not request iomem region <0x        c7eff000-0x        c7f00000> for ERST.
> 
> This needs to have leading zeroes. Make it so.
> 
> Signed-off-by: Borislav Petkov <bp@...e.de>
> Cc: Anton Vorontsov <anton@...msg.org>
> Cc: Colin Cross <ccross@...roid.com>
> Cc: Kees Cook <keescook@...omium.org>
> Cc: Tony Luck <tony.luck@...el.com>
> Cc: Len Brown <lenb@...nel.org>
> Cc: "Rafael J. Wysocki" <rjw@...k.pl>
> Cc: linux-acpi@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> ---
>  drivers/acpi/apei/erst.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c
> index 88d0b0f9f92b..1126afeb7e22 100644
> --- a/drivers/acpi/apei/erst.c
> +++ b/drivers/acpi/apei/erst.c
> @@ -1168,7 +1168,7 @@ static int __init erst_init(void)
>  	r = request_mem_region(erst_erange.base, erst_erange.size, "APEI ERST");
>  	if (!r) {
>  		pr_err(ERST_PFX
> -		"Can not request iomem region <0x%16llx-0x%16llx> for ERST.\n",
> +		"Can not request iomem region <0x%016llx-0x%016llx> for ERST.\n",
>  		(unsigned long long)erst_erange.base,
>  		(unsigned long long)erst_erange.base + erst_erange.size);
>  		rc = -EIO;

Acked-by: Naveen N. Rao <naveen.n.rao@...ux.vnet.ibm.com>

While looking at this, I noticed that we seem to be using varying field
widths in our APEI code:
- einj.c has two instances using %#010llx.
- apei-base.c uses widths of 10 (4 bytes) and 6 (2 bytes).

Not sure if these are intentional and those fields truly aren't 64-bit
(as suggested by the usage of long long int).


Regards,
Naveen

> -- 
> 1.8.3
> 

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