From: tj@kernel.org (Tejun Heo)
To: linux-arm-kernel@lists.infradead.org
Subject: ARM/kirkwood: v3.12-rc6: kernel BUG at mm/util.c:390!
Date: Sun, 27 Oct 2013 09:42:57 -0400 [thread overview]
Message-ID: <20131027134257.GB30783@mtj.dyndns.org> (raw)
In-Reply-To: <CACVXFVP2B3=82m_+DfA_oAEW86c=oxQ52G+yj5ncTU1DzP26Bw@mail.gmail.com>
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?
Thanks.
--
tejun
next prev parent reply other threads:[~2013-10-27 13:42 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-24 20:07 ARM/kirkwood: v3.12-rc6: kernel BUG at mm/util.c:390! Aaro Koskinen
2013-10-26 14:36 ` Will Deacon
2013-10-26 17:23 ` Aaro Koskinen
2013-10-27 11:51 ` Ming Lei
2013-10-27 12:50 ` Aaro Koskinen
2013-10-27 13:16 ` Ming Lei
2013-10-27 13:42 ` Tejun Heo [this message]
2013-10-27 13:47 ` Russell King - ARM Linux
2013-10-27 13:53 ` Russell King - ARM Linux
2013-10-27 14:18 ` Simon Baatz
2013-10-28 12:48 ` Catalin Marinas
2013-10-27 14:19 ` Ming Lei
2013-10-28 14:13 ` Simon Baatz
2013-10-28 15:45 ` Ming Lei
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