panic in swap_pager_swap_init (amd64/smp/6.2-pre)

Alex Vasylenko lxv at
Mon Nov 13 20:36:12 PST 2006

I tried to upgrade an amd64x2 box from "FreeBSD 6.1-STABLE #36: Mon Sep
4 11:22:15 EDT 2006" to "FreeBSD 6.2-PRERELEASE #1: Mon Nov 13 10:01:57
EST 2006" and found that a newly built kernel panics on boot and locks
up solid after printing:
SMP: AP CPU #1 Launched!
panic: failed to create swap_zone.

A few reboots later I also discovered that:
- GENERIC (UP) kernel works fine;
- SMP kernel fails in the same way;
- my kernel (a stripped down SMP) with "options SMP" removed works;
- my kernel with SMP enabled and either -v or -d (followed by cont)
("works" in the last case is defined as: I could upgrade gnome
2.14->2.16 with buildworld -j2 going at the same time)

old dmesg:
new dmesg (-v):
kernel config:

Any advice is greatly appreciated.

Thank you,

More information about the freebsd-stable mailing list