Messages in this thread | | | Date | Sun, 27 Oct 2013 13:47:19 +0000 | From | Russell King - ARM Linux <> | Subject | Re: ARM/kirkwood: v3.12-rc6: kernel BUG at mm/util.c:390! |
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On Sun, Oct 27, 2013 at 09:42:57AM -0400, Tejun Heo wrote: > On Sun, Oct 27, 2013 at 09:16:53PM +0800, Ming Lei wrote: > > On Sun, Oct 27, 2013 at 8:50 PM, Aaro Koskinen <aaro.koskinen@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@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. > > I don't think PageSlab() is the right test tho. Wouldn't testing > against user_addr_max() make more sense?
How does that help for a function passed a struct page pointer?
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