lockdebug panic on boot

["Christoph Egger" <Christoph_Egger%gmx.de@localhost>]

Hi!

I got this lockdebug panic on boot:

Mutex error: lockdebug_barrier: spin lock held

lock address : 0xffffffff80c04c10 type     :               spin
initialized  : 0xffffffff805a75a9
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
current cpu  :                  0 last held:                  0
current lwp  : 0xffffffff80ba9da0 last held: 0xffffffff80ba9da0
last locked  : 0xffffffff805a6aca unlocked : 0xffffffff805a6aa4
owner field  : 0x0000000000010600 wait/spin:                0/1

panic: LOCKDEBUG
fatal breakpoint trap in supervisor mode
trap type 1 code 0 rip ffffffff801fe4ad cs e030 rflags 246 cr2  0 cpl 8 rsp 
ffffffff80ec29e0
Stopped in pid 0.1 (system) at  netbsd:breakpoint+0x5:  leave
breakpoint() at netbsd:breakpoint+0x5
panic() at netbsd:panic+0x28f
lockdebug_more() at netbsd:lockdebug_more
mutex_enter() at netbsd:mutex_enter+0x279
vmem_xfree() at netbsd:vmem_xfree+0x34
kmem_free() at netbsd:kmem_free+0xd4
config_devalloc() at netbsd:config_devalloc+0x289
config_attach_loc() at netbsd:config_attach_loc+0x23
mp_pci_scan() at netbsd:mp_pci_scan+0xa5
hypervisor_attach() at netbsd:hypervisor_attach+0x170
config_attach_loc() at netbsd:config_attach_loc+0x16c
mainbus_attach() at netbsd:mainbus_attach+0xb8
config_attach_loc() at netbsd:config_attach_loc+0x16c
cpu_configure() at netbsd:cpu_configure+0x25
main() at netbsd:main+0x210
ds          0x29c0
es          0x1
fs          0x8
gs          0x4f0f
rdi         0x8
rsi         0xffffffff805b7749  printf+0xbc
rbp         0xffffffff80ec29e0
rbx         0xffffffff80ec29f0
rdx         0
rcx         0x1
rax         0x1
r8          0xffffffff80ec2900
r9          0
r10         0xffffffff80ec2900
r11         0x1
r12         0x104
r13         0xffffffff80914f0f  copyright+0x2abcf
r14         0x8
r15         0x1
rip         0xffffffff801fe4ad  breakpoint+0x5
cs          0xe030
rflags      0x246
rsp         0xffffffff80ec29e0
ss          0xe02b
netbsd:breakpoint+0x5:  leave
db>

'last locked' points to sys/kern/subr_autoconf.c:1115

Christoph