ARM/kirkwood: v3.12-rc6: kernel BUG at mm/util.c:390!

[Ming Lei]

On Sun, Oct 27, 2013 at 8:50 PM, Aaro Koskinen <aaro.koskinen at iki.fi> wrote:
>
> On ARM v3.9 or older kernels do not trigger this BUG, at seems it only
> started to appear with the following commit (bisected):
>
> commit 1bc39742aab09248169ef9d3727c9def3528b3f3
> Author: Simon Baatz <gmbnomis at gmail.com>
> Date:   Mon Jun 10 21:10:12 2013 +0100
>
>     ARM: 7755/1: handle user space mapped pages in flush_kernel_dcache_page

The above commit only starts to implement the helper on ARM,
but according to Documentation/cachetlb.txt, looks caller of
flush_kernel_dcache_page() should make sure the passed
'page' is a user space page.

Thanks,
-- 
Ming Lei