Panic in "thread taskq" on RELENG_6

Kris Kennaway kris at
Tue Nov 28 18:05:29 PST 2006

On Wed, Nov 29, 2006 at 01:01:54AM +0100, Markus Oestreicher wrote:
> Kevin Oberman wrote:
> >>Does that look like a hardware problem or a software issue?
> >>I will try to swap RAM in the next few days.
> >
> >You are the third person to report this panic. (I am one of the other
> >two.
> >
> >I am guessing from the name of your kernel that this is an SMP
> >system. So are the other two.
> >
> >Are you running gnome-2.16 with hald? This is about all we found
> >in common on the first two systems.
> The system is a 2-CPU SMP system with HT enabled.
> The server is running postfix, amavisd-new, clamav and mysql.
> There is no GUI running or installed.
> >Robert Watson would like some added data. Can you build a kernel with
> >the following options and connect something to the serial port to record
> >output?
> >options WITNESS 
> >options DDB 
> >options KDB 
> >options INVARIANTS
> There is no serial console on site, only a remote KVM console.
> So I have to copy the messages manually from screen.
> I am now running a kernel with this options compiled in.
> One thing I noticed that may be relevant or not:
> The system is running with ACPI disabled using loader.conf.
> If I enable ACPI the device acpi0 fires ~10000 interrupts/s
> and there are three system processes acpi_task[0-2] that will
> consume ~25% when the system is idle. With ACPI disabled it
> does not show that behavoir.

Might be a broken BIOS on your system, especially likely if it's
somewhat older.

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