kernel: protection fault trap, code=0

Stopped at      witness_checkorder+0xa9:        movl    0x20(%r14),%r15d

ddb{0}> serialport: Connected to syzkaller.us-central1-b.ci-openbsd-multicore-3 port 1 (session ID: 4ba92ec82dc797d50d211d4e1927c865162a85314cfdb4b54263c4a0281e4b34, active connections: 1).