panic with high kern.cam.boot_delay value

Scott Long scottl at samsco.org
Fri Nov 5 03:37:25 UTC 2010


On Nov 4, 2010, at 7:29 PM, Alexander Best wrote:
> hi there,
> 
> i just stumbled upon a panic in connection with a very high kern.cam.boot_delay
> value (=100000). this is on HEAD (r214809; amd64). unfortunately i couldn't
> enter the debugger, because the panic occured before my usb keyboard attached.
> 

options DDB
options KDB
options KDB_UNATTENDED

Do you have the ability to attach a serial console?

> the panic however occured in sched_priority(). can anybody reproduce this? just
> before the panic i saw some xpt_* message in connection with a 60 second delay.
> 

The 60 second message might have something to do with the config_intrhook service complaining about the long delay that you've imposed on the boot process.  It'll panic if you have INVARIANTS set and it waits for five 60 second intervals.

Scott



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