Kernel Panic: isp - page fault while in kernel mode

Kris Kennaway kris at
Wed May 28 23:01:10 UTC 2008

Greg Himes wrote:
> Hello All,
> Last week, one half of my dual port Qlogic fibre channel interface
> started causing a page fault panic while probing the second port at boot 
> time.
> I was able to get the system back up by disabling the BIOS on the
> second port.  The system still sees the 2nd port, but politely
> displays a few errors, then continues on.
> This all started after I powered the system down for maintenance.
> System is running FreeBSD 6.3-RELEASE i386
> What is the proper way to help debug this problem?

See the developers handbook.


P.S. And don't do this, you're crippling your network:

> WARNING: MPSAFE network stack disabled, expect reduced performance.

More information about the freebsd-questions mailing list