Instability likely related to new pmap on Cubieboard A10

[Adrian Chadd]

Hi,

can you try just before the jemalloc upgrade to -HEAD?



-a


On 18 August 2015 at 18:38, Dmitry Marakasov <amdmi3 at amdmi3.ru> wrote:
> * Ian Lepore (ian at freebsd.org) wrote:
>
>> > I've just tried latest HEAD on cubieboard A10, and discovered that
>> > it's completely unstable. Kernel boots without problems, however
>> > right after init is started many processes crash with sigsegv and
>> > other errors, and it ends with either hang or a panic. Examples
>> > below. With kernel built with `nooptions ARM_NEW_PMAP' these
>> > problems go away. Feel free to ask for any additional info.
>> >
>> > ---
>> > [...]
>> > ---
>>
>> That is, frankly, just hard to accept as real.  ARM_NEW_PMAP has been
>> the default for like 8 months.  If it was that broken, the first report
>> of it would have come in much earlier than this.  That seems more like
>> some sort of broken or corrupted binary, and perhaps the problem went
>> away not because the option changed, but because changing the option
>> rebuilt whatever was corrupted.
>>
>> Actually, given that everything was fine until userland started, and
>> "bad syscall" shows up a lot in the errors, a kernel/userland mismatch
>> also seems like a good candidate.
>
> I've just rebuilt it again just to be sure, same thing - kernel with
> ARM_NEW_PMAP misbehaves. I'd add:
> - Both kernels were built with the same commands, from the same revision
>   and with the clean /usr/obj; only difference is presence of `nooptions
>   ARM_NEW_PMAP`
> - Both kernels use the same world, built from the same revision. It was
>   not touched when changing kernels
>
> --
> Dmitry Marakasov   .   55B5 0596 FF1E 8D84 5F56  9510 D35A 80DD F9D2 F77D
> amdmi3 at amdmi3.ru  ..:  jabber: amdmi3 at jabber.ru      http://amdmi3.ru
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