Reproducible crashes on RPI2 under 11-CURRENT using stress2

[Svatopluk Kraus]

I have a solution for the panics waiting for review:
https://reviews.freebsd.org/D3617
You are welcome to try it.

Svatopluk Kraus



On Wed, Sep 16, 2015 at 4:19 AM, bob prohaska <fbsd at www.zefox.net> wrote:
> Hi Warner,
>
> On Wed, Sep 02, 2015 at 06:26:45PM -0600, Warner Losh wrote:
>> The interrupt controller code is not SMP safe. It needs to be fixed or
>> you'll see instability under load. Stuff like these crashes.
>>
>> Run a UP kernel if you need to do high loads.
>>
>
> Does the interrupt controller change behavior when in single user?
> If not the problems may lie elsewhere..
>
> Running an OS build in single user mode on RPI2 (with necessary
> services such as swap and powerd turned on) seems to result
> in a uniformly successful compilation. So far no smsc0 warnings
> and no crashes in about four tries. Times are a bit slow, ~18 hours.
>
> Top reports all four cpu cores active, which suggests that
> multiprocessing is also active. Kernel config is default,
> with the ULE scheduler.
>
> Thanks for reading, and any insights!
>
> bob prohaska
>
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