panic (separate, NOT DF-2468) triggered by iSCSI pass-through to fake target:
panic: assertion "LWKT_TOKEN_HELD_EXCL(&mp_token)" failed in sim_lock_assert_owned at /usr/src/sys/bus/cam/cam_sim.c:104
Stopped at      Debugger+0x7c:  movb    $0,0xbdaf09(%rip)
db>
# This is a distinct pre-existing CAM SIM locking issue exposed by the
# iSCSI + SCSI pass-through interaction, not the DF-2468 getSenseData leak.