Re: kern/38956 (rb tree corruption?)

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

> > please try the latest source.

> news68k gets panic before init(8) invoked:

news68k LOCKDEBUG kernel without DIAGNOSTIC also fails in earlier place:
---
NEWS> bo
NetBSD/news68k Primary Boot
NetBSD/news68k Secondary Boot, Revision 1.6
(tsutsui@mirage, Mon Apr 21 01:18:44 JST 2008)
Booting hd(0,0,0)
1714244+40140+315652 [148336+141690]=0x242648

panic: lockdebug_lookup: uninitialized lock (lock=0x15dbe10)
Stopped in pid 0.1 (system) at  netbsd:cpu_Debugger+0x6:        unlk    a6
db> tr
cpu_Debugger(1aa740,15dbe10,0,246e58,246e74) + 6
panic(192fb7,15dbe10,29f3000,19f3000,1aa740) + 172
lockdebug_wantlock(15dbe10,b2bc8,0,0) + 120
mutex_vector_enter(15dbe10,1e1620,246ed0,246ee0,b6164) + 1fa
uvm_map_reference(15dbe00,29f3000,41727,0,15dbe00) + 12
uvm_map_submap(1e1620,19f3000,29f3000,15dbe00,15dbe00,19f3000,29f3000,0) + 100
uvm_km_suballoc(1e1620,246f50,246f4c,1000000,0) + 94
uvm_pager_init(1488000,ffc00000,246f7c,246f78,1ed3e4) + 24
uvm_init(243000,3e8000,ffc000,ffeffffc,0) + 68
uvm_fault(0x1e1620, 0x1450000, 0x1) -> 0xe
  type 8, code [mmu,,ssw]: 402074d
trap type 8, code = 0x402074d, v = 0x1450ffa
kernel program counter = 0x159594
kernel: MMU fault trap
Caught exception in ddb.
main() + 1e
db> show lock 0x15dbe10
lock address : 0x00000000015dbe10 type     :     sleep/adaptive
initialized  : 0x00000000000b2cc2
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
current cpu  :                  0 last held:                  0
current lwp  : 0x00000000001aa740 last held: 000000000000000000
last locked  : 000000000000000000 unlocked : 000000000000000000
owner field  : 000000000000000000 wait/spin:                0/0

Turnstile chain at 0x1efa20.
=> No active turnstile for this lock.
db> 
---
The initialized address 0xb2cc2 is mutex_init() in uvm_map_setup()
so it's certainly initialized.

rb_tree code in subr_lockdebug.c is also problematic?
---
Izumi Tsutsui