Messages in this thread | | | Date | Mon, 08 Jun 2009 16:00:43 +0800 | From | Tao Ma <> | Subject | Re: /proc/kcore has a unreasonable size(281474974617600) in x86_64 2.6.30-rc8. |
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Américo Wang wrote: > On Mon, Jun 8, 2009 at 2:02 PM, Tao Ma<tao.ma@oracle.com> wrote: >> >> Amerigo Wang wrote: >>> On Sat, Jun 06, 2009 at 03:21:23PM -0700, Yinghai Lu wrote: >>>> Tao Ma wrote: >>>>> Yinghai Lu wrote: >>>>>> 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? >>>>> Sorry fo my poor English, bug what do you mean? >>>>> >>>>> I just printk in the setup.c and the result is >>>>> >>>>> @@@@high_momory ffff88013c000000 >>>> so that value print out is right. >>> Yeah. >>> >>> Tao, can you reproduce the number mentioned in the subject?? >> Sorry for the delay. >> >> But the result is the same > > Yes? > Your printk() shows kcore size is: 5301604352, and in your subject it is > 281474974617600... > > Or they happened in the same time? yes. the same box and the same linux version. A bit strange.
[taoma@ocfs2-test2 ~]$ dmesg|grep "high memory" high memory ffff88013c000000, size 5301604352 [taoma@ocfs2-test2 ~]$ ll /proc/kcore -r-------- 1 root root 281474974617600 Jun 8 15:20 /proc/kcore
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