On 27 Nov, Konstantin Belousov wrote:
> On Wed, Nov 27, 2013 at 01:13:41AM -0800, Don Lewis wrote:
>> On 27 Nov, Konstantin Belousov wrote:
>> > On Wed, Nov 27, 2013 at 12:22:27AM -0800, Don Lewis wrote:
>> >> It took a while, but I just got another double fault, though this one is
>> >> somewhat different. This time it trapped in cpu_switch(), which
>> >> resulted in calls to
>> >> trap()->printf()->...->putchar()->msgbuf_addstr()->_mtx_lock_spin_flags()
>> >> where it trapped again.
>> >> Sitting at DDB prompt ...
>> > Does 'show allpcpu' work ?
>> Yup. For both CPUs, curthread == idlethread, both CPUs have the same
>> curpcb. What is "dynamic pcpu"? The values differ considerably between
>> the two CPUs.
> Are you sure about curpcb being the same for two CPUs ? This is rather
> broken. The best would be to show the actual ddb output.
It turns out that they are different:
Screenshot here: <http://people.freebsd.org/~truckman/doublefault1.JPG>
> Dynamic pcpu is in fact 'static' pcpu which is allocated for modules.
> It must be per-cpu, so different values are correct.
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