Netgraph/mpd5 stability issues

[Przemyslaw Frasunek]

> In this dump, can we seek for where did 0x74 came from? Can you look at
> ng_name_hash[hash]?

(kgdb) print hash
No symbol "hash" in current context.
(kgdb) info all
eax            0xffffff9a       -102
ecx            0xe7ce6895       -405903211
edx            0xffffff9a       -102
ebx            0x74     116
esp            0xcc28c380       0xcc28c380
ebp            0xe7ce6878       0xe7ce6878
esi            0xe7ce6894       -405903212
edi            0xe7ce6ac8       -405902648
[...]
(kgdb) print ng_name_hash[116]
$4 = {lh_first = 0xcbd6fb00}
(kgdb) print *ng_name_hash[116].lh_first
$5 = {nd_name = "ng357", '\0' <repeats 26 times>, nd_type = 0xc61871a0,
  nd_flags = 0, nd_refs = 1, nd_numhooks = 0, nd_private = 0xcc3b5e80,
  nd_ID = 454681, nd_hooks = {lh_first = 0x0}, nd_nodes = {
    le_next = 0xcbbf7900, le_prev = 0xc5f4fad0}, nd_idnodes = {
    le_next = 0xcc061680, le_prev = 0xc5f4f744}, nd_work = {tqe_next = 0x0,
    tqe_prev = 0x0}, nd_input_queue = {q_flags = 0, q_mtx = {lock_object = {
        lo_name = 0xc5f4e986 "ng_node", lo_type = 0xc5f4e986 "ng_node",
        lo_flags = 16973824, lo_witness_data = {lod_list = {stqe_next = 0x0},
          lod_witness = 0x0}}, mtx_lock = 4, mtx_recurse = 0}, queue = 0x0,
    last = 0xcbd6fb70, q_node = 0xcbd6fb00}}