Dom0 LOCKDEBUG panic

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

Hi,

when a HVM guest shut down, Dom0 crashes:


tap0: detached
Mutex error: kmem_intr_free: allocation contains active lock

lock address : 0xffffa000014b3cc8 type     :               spin
initialized  : 0xffffffff807684b0
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
current cpu  :                  0 last held:                  0
current lwp  : 0xffffa000013dac00 last held: 000000000000000000
last locked  : 0xffffffff80769bac unlocked*: 0xffffffff8076a0ae
owner field  : 0x0000000000000600 wait/spin:                0/1

panic: LOCKDEBUG
fatal breakpoint trap in supervisor mode
trap type 1 code 0 rip ffffffff80211545 cs e030 rflags 246 cr2
ffffa000198814e8 cpl 0 rsp ffffa00019f2e960
Stopped in pid 0.34 (system) at netbsd:breakpoint+0x5:  leave
breakpoint() at netbsd:breakpoint+0x5
vpanic() at netbsd:vpanic+0x1f2
printf_nolog() at netbsd:printf_nolog
lockdebug_more() at netbsd:lockdebug_more
kmem_intr_free() at netbsd:kmem_intr_free+0x8f
xbdback_xenbus_destroy() at netbsd:xbdback_xenbus_destroy+0xe4
otherend_changed() at netbsd:otherend_changed+0xaf
xenwatch_thread() at netbsd:xenwatch_thread+0xa2
ds          b230
es          e9a0
fs          100
gs          d700
rdi         0
rsi         ffffffff8063fd7a    printf+0xbc
rbp         ffffa00019f2e960
rbx         104
rdx         0
rcx         0
rax         1
r8          0
r9          1
r10         0
r11         e033
r12         ffffffff809f1195    copyright+0x2e6d5
r13         ffffa00019f2e9a0
r14         ffffffff8099b230    __func__.9015
r15         ffffffff80b4b840
rip         ffffffff80211545    breakpoint+0x5
cs          e030
rflags      246
rsp         ffffa00019f2e960
ss          e02b
netbsd:breakpoint+0x5:  leave
db>