lock error panic: rw_vector_enter: locking against myself

[NONAKA Kimihiro <nonakap%gmail.com@localhost>]

Hi,

NetBSD/i386-current(20110702) panic when build.sh*3 and daily script is running.

-----
Reader / writer lock error: rw_vector_enter: locking against myself

lock address : 0x00000000cead7418
current cpu  :                  0
current lwp  : 0x00000000cc124800
owner/count  : 0x00000000cc124800 flags    : 0x0000000000000004

panic: lock error
fatal breakpoint trap in supervisor mode
trap type 1 code 0 eip c0202324 cs 8 eflags 246 cr2 bb53a000 ilevel 0
Stopped in pid 9491.1 (find) at netbsd:breakpoint+0x4:  popl    %ebp
db{0}> bt
breakpoint()
panic()
lockdebug_abort()
rw_abort()
rw_vector_enter() at netbsd:rw_vector_enter+0x315
genfs_lock() at netbsd:genfs_lock+0xa8
layer_bypass() at netbsd:layer_bypass+0xc3
VOP_LOCK() at netbsd:VOP_LOCK+0x62
vclean() at netbsd:vclean+0x97
getcleanvnode() at netbsd:getcleanvnode+0xd4
getnewvnode() at netbsd:getnewvnode+0x70
ffs_vget() at netbsd:ffs_vget+0x57
ufs_lookup() at netbsd:ufs_lookup+0x74a
VOP_LOOKUP() at netbsd:VOP_LOOKUP+0x8b
lookup_once() at netbsd:lookup_once+0x18e
namei_tryemulroot() at netbsd:namei_tryemulroot+0x17c
namei() at netbsd:namei+0x2a
do_sys_stat(): netbsd:do_sys_stat+0x52
sys___lstat50() at netbsd:sys___lstat50+0x2a
syscall() at netbsd:syscall+0xc4
db{0}>

-- 
NONAKA Kimihiro