KAMEZAWA Hiroyuki wrote:
> On Tue, 21 Oct 2008 14:20:27 +0800
> Li Zefan <lizf@cn.fujitsu.com> wrote:
> 
>>> BTW, "allocate all page_cgroup at boot" patch goes to Linus' git. Wow.
>>>
>> But seems this patch causes kernel panic at system boot ... (or maybe one of other
>> memcg patches?)
>>
>> I wrote down the panic manually:
>>
>> BUG: unable to handle kernel NULL pointer dereference at 00000000
>> IP: page_cgroup_zoneinfo + 0xa
>>
>> Call Trace:
>> ? mem_cgroup_charge_common + 0x17d
>> ? mem_cgroup_charge
>> ? add_to_page_cache_locked
>> ? add_to_page_cache_lru
>> ? find_or_create_page
>> ? __getblk
>> ? ext3_get_inode_loc
>> ? ext3_iget
>> ? ext3_lookup
>>
>> Tell me if you need extra information.
>>
> This shows how small testers in -mm ...this is on x86 ?

Yes, x86_32

> Could you show me your config ? 

attached

> and what happens if cgroup_disable=memory ?
> 

then booted up successfully