$ dfbsd-qemu/vm.sh run_root 'kldload /tmp/sipmod/siphashtest.ko; echo KLDLOAD_RC=$?'
(no output; ssh session hung; command timed out after 120s — guest had panicked mid-syscall)
$ dfbsd-qemu/vm.sh status
down
$ dfbsd-qemu/vm.sh log 50 | tail -20
login: panic: SipBuf: invalid parameters
cpuid = 0
Trace beginning at frame 0xfffff8011870b6a8
SipBuf() at SipBuf+0xc5 0xffffffff809f92e5 
SipBuf() at SipBuf+0xc5 0xffffffff809f92e5 
SipHash_Update() at SipHash_Update+0x94 0xffffffff809f9434 
SipHash24_TestVectors() at SipHash24_TestVectors+0x7f 0xffffffff826000bf 
siphashtest_modevent() at siphashtest_modevent+0x2c 0xffffffff8260002c 
module_register_init() at module_register_init+0x49 0xffffffff806232e9 
Debugger("panic")
CPU0 stopping CPUs: 0x0000003e
 stopped
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
db>