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

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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@xxxxxx> 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@xxxxxxxxx>
> > > 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?

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>




[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux]     [Linux OMAP]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]