> > To point out the obvious, booting a 12.0 kernel with 11.0 userland to
> > multiuser mode is seriously unsupported. You really need to boot to
> > single user and install 12.0 userland to really expect things to work.
>
> Yes, good point. This has worked on every other machine I have upgraded
> from 11 to 12, which is why I didnt think of that, but then all the
> motherboards are slightly different.
So, I went back to this, and di it properly. Booted single user mode,
which worked, then installed world, mergemaster, and rebooted single
user mode.
...and I get a kernel panic as I did before. So it wasn't the 11 world with
the 12 kernel after all. Panic is reproduced below. I am somewhat stuck
now though - where do I go from here ?
Feeding entropy
lo0: link state changed to UP
carp: demoted by 240 to 240 (interface down)
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x28
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff80ca1621
stack pointer = 0x28:0xfffffe00004da740
frame pointer = 0x28:0xfffffe00004da760
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 12 (swi4: clock (0))
trap number = 12
panic: page fault
cpuid = 0
time = 1549292394
KDB: stack backtrace:
#0 0xffffffff80be8d57 at kdb_backtrace+0x67
#1 0xffffffff80b9d293 at vpanic+0x1a3
#2 0xffffffff80b9d0e3 at panic+0x43
#3 0xffffffff8107384f at trap_fatal+0x35f
#4 0xffffffff810738a9 at trap_pfault+0x49
#5 0xffffffff81072ece at trap+0x29e
#6 0xffffffff8104ee55 at calltrap+0x8
#7 0xffffffff80ca1526 at ether_output+0x6b6
#8 0xffffffff80d0c824 at arprequest+0x4c4
#9 0xffffffff80d0e47c at garp_rexmit+0xbc
#10 0xffffffff80bb7169 at softclock_call_cc+0x129
#11 0xffffffff80bb7649 at softclock+0x79
#12 0xffffffff80b613a4 at ithread_loop+0x1d4
#13 0xffffffff80b5e2d2 at fork_exit+0x82
#14 0xffffffff8104fe3e at fork_trampoline+0xe
Uptime: 11s
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