Frequently Asked Questions for FreeBSD 2.X : Troubleshooting : ahc0: brkadrint, Illegal Host Access at seqaddr 0x0
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4.14. ahc0: brkadrint, Illegal Host Access at seqaddr 0x0

This is a conflict with an Ultrastor SCSI Host Adapter.

During the boot process enter the kernel configuration menu and disable uha0, which is causing the problem.

Frequently Asked Questions for FreeBSD 2.X : Troubleshooting : ahc0: brkadrint, Illegal Host Access at seqaddr 0x0
Previous: ``CMAP busy panic'' when rebooting with a new kernel.
Next: Sendmail says ``mail loops back to myself''