Re: [3.9-rc1 x86] Bug in ioremap code?

From: H. Peter Anvin
Date: Wed Mar 06 2013 - 06:17:01 EST


On 03/06/2013 02:16 AM, Tetsuo Handa wrote:
>
> But I found that this bug occurs only when the system has little RAM.
>
> With 892MB RAM where /proc/meminfo would show HighTotal > 0,
> this bug does not occur.
>
> HighTotal: 4040 kB
> LowTotal: 873960 kB
>
> With 888MB RAM where /proc/meminfo would show HighTotal == 0,
> this bug occurs.
>

OK, this makes sense. I guess we have a bug in the case where we do not
exhaust lowmem.

-hpa


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