kernel: protection fault trap, code=0

Stopped at      witness_checkorder+0xa9:        movl    0x18(%r14),%r15d

ddb{0}> serialport: Connected to syzkaller.us-central1-b.ci-openbsd-setuid-1 port 1 (session ID: 3d7334f54e34eca837976c35079de2ba7ce6974867ee0b3bd3fc263e39ffd3d7, active connections: 1).