Panic: attempted pmap_enter on 2MB page
Alan Cox
alc at rice.edu
Wed Oct 6 17:46:44 UTC 2010
Dave Hayes wrote:
> Alan Cox <alc at rice.edu> writes:
>
[snip]
>> Is this problem reproducible? I don't recall if you mentioned that
>> earlier.
>>
>
> Sort of.
>
> It seems that everytime I generate a bootable FreeBSD ISO, a die is
> rolled. If it comes up a certain number then it crashes, otherwise it's
> fine. ;)
>
> My ISO generation process might be relevant; I create a 600MB ramdisk
> (it used to be 512 on FreeBSD 7.3) which loads from the ISO on
> boot. This winds up being the root partition.
>
> As a datapoint the same die roll happens on FreeBSD 7.3 although the
> chance of working seems to be greater.
>
> If you'd like a copy of the ISO to see this for yourself I can make it
> available. I'm guessing it will also crash for you in this way modulo
> hardware issues.
>
When you build your kernel for this ISO are you increasing the value of
NKPT?
Alan
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