Re: /proc/kcore has a unreasonable size(281474974617600) in x86_64 2.6.30-rc8.

Yinghai Lu
2009-06-05T17:51:21Z

Tao Ma wrote:
>
>
> Amerigo Wang wrote:
>> On Fri, Jun 05, 2009 at 05:30:49PM +0800, Tao Ma wrote:
>>>> Please send the boot logs: dmesg -s 1000000 > foo
>>> attached.
>>
>>> #######high memory 18446612137615818752, size_t 18446612137615818752
>>> #######kcore size 5301604352, PAGE_OFFSET 0, PAGE_SIZE 4096
>>
>>
>> These two lines must be added by yourself...
>>
>> What?!
>> How can PAGE_OFFSET be 0??
>> Can you show us these two printk() you just added?
>>
>> And, the size of kcore is not the crazy number in the subject...
>> This one is much saner..
> Sorry, I used the wrong printk. the correct one is:
> #######high memory 18446612137615818752, size_t 18446612137615818752
> #######kcore size 5301604352, PAGE_OFFSET 18446612132314218496,
> PAGE_SIZE 4096
>

%lx should be used.

also you compiler doesn't like

high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1;

in setup.c?

YH