VM panics

[Dag-Erling Smørgrav]

With recent -CURRENT, I get recurrent VM panics on amd64:

panic: mutex vm object not owned at /usr/src/sys/vm/vm_page.c:608

which corresponds to the following code at the beginning of in
vm_page_remove():

605:        mtx_assert(&vm_page_queue_mtx, MA_OWNED);
606:        if ((object = m->object) == NULL)
607:                return;
608:        VM_OBJECT_LOCK_ASSERT(object, MA_OWNED);
609:        if (m->flags & PG_BUSY) {
610:                vm_page_flag_clear(m, PG_BUSY);
611:                vm_page_flash(m);

This only happens under load (e.g. buildworld).

Serial console does not work properly ("sio0: configured irq 3 not in
bitmap of probed irqs 0"), and I don't currently have a firewire
cable.

DES
-- 
Dag-Erling Smørgrav - des at des.no