kernel BUG at kernel/kallsyms.c:222!

[Ming Lei]

On Tue, Nov 12, 2013 at 3:32 AM, Russell King - ARM Linux
<linux at arm.linux.org.uk> wrote:
> On Mon, Nov 11, 2013 at 05:15:29PM +0000, Jonathan Austin wrote:
>> I've tested the patch below and it solves the ARM side of things - so
>> gives you an option other than a complete revert. Happy to put this in to
>> RMK's patch system if you'd prefer not to have to revert and he's happy
>> with the patch.
>
> I think this is the right solution because it then means that this symbol
> has the same meaning whether on MMU or !MMU - and getting rid of these
> kinds of gratuitous variances are the only way that !MMU is going to
> become less fragile.

The patch only fixes problem on arm, and other !MMU&&!ARM archs
should be affected too.

Also there is no CONFIG_PAGE_OFFSET defined for some ARCHs,
such as 64bit ARCHs.

Currently, I suggest to filter only on ARM as attachment patch if we plan
to merge Jonathan's patch, otherwise a more complicated approach has
to be figured out  to do the filter(such as, define a readonly symbol in
kernel to store PAGE_OFFSET, and let scripts/kallsyms use it for
filtering).



Thanks,
-- 
Ming Lei
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