LOCKDEBUG panic with xterm resize on VGA

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

Hi!

I booted NetBSD/amd64 on a machine with many CPUs.

I typed "resize" on the VGA console and it paniced:

Mutex error: lockdebug_wantlock: locking against myself

lock address : 0xffffffff80cad030 type     :               spin
shared holds :                  0 exclusive:                 1
shares wanted:                  0 exclusive:                  1
current cpu  :                 c0 last held:                16
current lwp  : 0xffff800047abb7c0 last held: 0xffff800047abb7c0
lasted locked  : 0xffffffff80477d27 unlocked : 0xffffffff80477ca5
initialized  : 0xffffffff80474aea
owner field  : 0x0000000000010600 wait/spin:                0/1

panic: LOCKDEBUG
Stopped in pid 382.1 (resize) at            netbsd:breakpoint+0x5: leave
db{16}> bt
breakpoint() at netbsd:breakpoint+0x5
panic() at netbsd:panic+0x257
lockdebug_abort1() at netbsd:lockdebug_abort1+0xd3
mutex_vector_enter() at netbsd:mutex_vector_entor+0x221
ttyinput() at netbsd:ttyiput+0x32
wsdisplay_emulinput() at netbsd:wsdisplay_emulinput+0x58
wsemul_vt100_handle_csi() at netbsd:wsemul_vt100_handle_csi+0x65c
wsemul_vt100_output_csi() at netbsd:wsemul_vt100_output_csi+0x37
wsemul_vt100_output() at netbsd:wsemul_vt100_output+0x286
wsdisplaystart() at netbsd:wsdisplaystart+0x181
ttstart() at netbsd:ttstart+0x12
ttwrite() at netbsd:ttwrite+0x2ba
cdev_write() at netbsd:cdev_write+0x79
cnwrite() at netbsd:cnwrite+0x45
cdev_write() at netbsd:cdev_write+0x79
spec_write() at netbsd:spec_write+0xa8
VOP_WRITE() at netbsd:VOP_WRITE+0x60
cttywrite() at netbsd:cttywrite+0x79
cdev_write() at netbsd:cdev_write+0x79
spec_write() at netbsd:spec_write+0xa8
VOP_WRITE() at netbsd:VOP_WRITE+0x60
vn_write() at netbsd:vn_write+0xce
dofilewrite() at netbsd:dofilewrite+0x7e
sys_write() at netbsd:sys_write+0x72
syscall() at netbsd:sysall+0x9a
db{16}>