linux-kernel - Re: [PATCH] x86: split e820 reserved entries record to late v4

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Date:	Mon, 13 Oct 2008 14:14:16 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Tony Luck <tony.luck@...el.com>
CC:	Yinghai Lu <yhlu.kernel@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>, tglx@...utronix.de,
	jbarnes@...tuousgeek.org, torvalds@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: split e820 reserved entries record to late v4 -
 fix v7

Tony Luck wrote:
> On Thu, Sep 4, 2008 at 12:22 PM, Yinghai Lu <yhlu.kernel@...il.com> wrote:
>> On Thu, Sep 4, 2008 at 12:16 PM, Andrew Morton
>> <akpm@...ux-foundation.org> wrote:
>>> On Thu, 4 Sep 2008 21:04:57 +0200
>>> Ingo Molnar <mingo@...e.hu> wrote:
>>>
>>>> +             printk(KERN_DEBUG "    __reserve_region_with_split: (%s) [%llx, %llx], res: (%s) [%llx, %llx]\n",
>>>> +                      conflict->name, conflict->start, conflict->end,
>>>> +                      name, start, end);
>>> start and end have type resource_size_t.  Such types CANNOT be printed
>>> unless cast to a known type.
>>>
>>> Because there is a %s following an incorrect %lld, the above code will
>>> crash the machine.
>> should just remove those lines.
> 
> This didn't happen.  These lines are still in the version that went into
> Linus' tree over the weekend for 2.6.28.  On the ia64 build they spit
> out a bunch of warnings:
> 
> kernel/resource.c:554: warning: format '%llx' expects type 'long long
> unsigned int', but argument 3 has type 'resource_size_t'
> 
> Ditto for args 4, 6 and 7 on the same line.
> 

Here is a fix... currently running standard tests on it.

	-hpa


View attachment "0001-resource-fix-printk-of-resource_size_t.patch" of type "text/x-patch" (1318 bytes)