I see that this is also posted to driver-discuss, so resending to
include both.
---- Randy
On Sat, 18 Sep 2010, Randy Fishel wrote:
>
>
>
> On Sat, 18 Sep 2010, Tom Chen wrote:
>
> > Hello,
> >
> > One of my x4270 with snv143 OS always panic after reboot. See the
> > log below. What is this panic? it seems an error in power
> > management. However, the other x4270 never has this panic. It is
> > very strange. Is this a bad setup in this x86 machine's BIOS or one
> > device driver not good? how do I disable pm?
> >
> > I failed to make a core dump since recent Solaris Express release
> > apparently does not enable creation of core dump when panic happens.
> > How do I enable?
> >
> > Tom
> >
>
> To start, I would like to get a dump, as various values will be of
> use in determining a solution, but this problem appears to be the
> result of releasing the lock after setting CPU's to their max power
> setting. Setting this level should not have occured withough first
> acquiring the lock, so there is either a path where it isn't acquired,
> or there is a path where it is released more than once (a debug kernel
> would likely have tripped on an ASSERT). As another machine of the
> same architecture is not doing this, the trigger is something to do
> with a difference in OS (are they both running the same release?), or
> some difference in settings between the two (does the failing machine
> run from the CD or a previous release?).
>
> In any account, I see this as being a bug in some part of the CPU
> power management path, and we desire a dump to check it out further.
> The messages file, though, does indicate that a dump was taken, but it
> is possible that it wasn't extracted because an extraction location
> was not specified or doesn't exist. Use dumpadm(1m) to change or view
> the settings. Note that the directory that is defined by 'Savecore
> directory' must also exist. You can also extract this dump if you
> have a different BE that will allow the machine to boot.
>
> Send me whatever you might be able to extract and I will see about
> getting a bug filed. Also, I don't see offhand that there will be a
> way to disable PM in the OS (if this is an always-panic-at-boot
> problem), so you might have to check BIOS settings for CPU power
> management settings to get the machine to stop panicing (check the
> difference in BIOS PM settings between the machines).
>
> Cheers!
>
> ---- Randy
>
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