(kgdb) frame 9
#9  0xc04df03c in devadded (dev=0xc356c380) at ../../../kern/subr_bus.c:646
646             bus_child_pnpinfo_str(dev, pnp, 1024);
(kgdb) p dev
$20 = 0xc356c380
(kgdb) p *dev
$21 = {ops = 0xc35bb800, link = {tqe_next = 0x0, tqe_prev = 0xc3398d18}, devlink = {tqe_next = 0x0,
    tqe_prev = 0xc3475e0c}, parent = 0xc3398d00, children = {tqh_first = 0x0, tqh_last = 0xc356c398},
  driver = 0xc360f268, devclass = 0xc3477a40, unit = 0, nameunit = 0xc347cc60 "ib0",
  desc = 0xc34779c0 "vendor 0x0482 product 0x0204, rev 1.10/4.01, addr 2", busy = 0, state = DS_ATTACHED,
  devflags = 0, flags = 61, order = 0 '\0', pad = 0 '\0', ivars = 0xc3535440, softc = 0xc360b500,
  sysctl_ctx = {tqh_first = 0xc347cb80, tqh_last = 0xc354e294}, sysctl_tree = 0xc3535600}
(kgdb)