[Question] race condition in mm/page_alloc.c regarding page->lru?

[Minchan Kim]

On Fri, Apr 2, 2010 at 2:04 PM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu at jp.fujitsu.com> wrote:
> On Fri, 2 Apr 2010 11:51:33 +0800
> TAO HU <tghk48 at motorola.com> wrote:
>
>> 2 patches related to page_alloc.c were applied.
>> Does anyone see a connection between the 2 patches and the panic?
>> NOTE: the full patches are attached.
>>
>
> I don't think there are relationship between patches and your panic.
>
> BTW, there is other case about the backlog rather than race in alloc_pages()
> itself. If someone list_del(&page->lru) and the page is already freed,
> you'll see the same backlog later.
> Then, I doubt use-after-free case rather than complicated races.

It does make sense.
Please, grep "page handling" by out-of-mainline code.
If you found out, Please, post it.

-- 
Kind regards,
Minchan Kim