$ dfbsd-qemu/vm.sh run_root 'kldload /tmp/nulldyn-rel.ko; echo RC=$?'
(no output before guest death)
$ dfbsd-qemu/vm.sh log 25
Fatal trap 12: page fault while in kernel mode
cpuid = 5; lapic id = 5
fault virtual address  = 0x18
fault code             = supervisor read data, page not present
instruction pointer    = 0x8:0xffffffff80626deb
stack pointer          = 0x10:0xfffff80117e586b8
frame pointer          = 0x10:0xfffff80117e586e8
current process        = 833
kernel: type 12 trap, code=0
CPU5 stopping CPUs: 0x0000001f
 stopped
Stopped at      relocate_file+0x7b:      movl    (%rax),%esi
db>