Hang when starting sshd on MP machine

[Martin Husemann <martin%duskware.de@localhost>]

With a SMP kernel from some minutes ago, I get a hang when starting sshd.

...
Starting local daemons:.
Updating motd.
Starting ntpd.
Starting sshd.
[machine hangs here - I break in ddb:]
Stopped in pid 220.1 (ntpd) at  netbsd:cpu_Debugger+0x4:        nop
db{0}> bt                                                           
zsc_intr_hard(1, 11d2350, 1203c00, 1237400, ca1c8c0, badcafe) at netbsd:zsc_intr
_hard+0xfc                                                                     
zshard(24f1000, 5a1baab0d, 5a1e7c05e, 8000000000000000, 5a1e7c05e, 50) at netbsd
:zshard+0x18                                                                   
intr_list_handler(0, a, e0017ed0, 1, 11d35c0, 0) at netbsd:intr_list_handler+0x1
4                                                                              
sparc_interrupt(0, 1203800, 0, ca1c8c0, ca4f090, badcafe) at netbsd:sparc_interr
upt+0x29c                                                                      
mutex_vector_enter(ca4f090, 1232238, 5d5, 1232270, ca1c8c0, ca1c8c0) at netbsd:m
utex_vector_enter+0xa0                                                         
knote_activate(ca4f090, 0, 14892f8, 0, 0, 0) at netbsd:knote_activate+0x38
knote(c93ec90, 0, 0, 2502138, 0, 0) at netbsd:knote+0x44                  
sowakeup(27edba0, 27edc90, 1, 2502200, 30, badcafe) at netbsd:sowakeup+0x18
unp_output(0, 0, 1204598, 27edba0, badcafe, badcafe) at netbsd:unp_output+0xb0
uipc_usrreq(27ed860, 9, ca1c8c0, 0, 0, 39) at netbsd:uipc_usrreq+0x4f4        
sosend(0, 0, cbe5bb8, 3b, 0, 0) at netbsd:sosend+0x470                
do_sys_sendmsg(3b, 3, 0, 0, cbe5e00, badcafe) at netbsd:do_sys_sendmsg+0x31c
sys_sendto(ca1c8c0, cbe5dc0, cbe5e00, 19, 1471000, ca1c8c0) at netbsd:sys_sendto
+0x4c                                                                          
syscall_plain(cbe5ed0, 6, 40e3a2ec, 19, 40e3a2ec, 800) at netbsd:syscall_plain+0
x2d4                                                                           
?(3, ffffffffffff9f60, 3b, 0, 0, 0) at 0x10093e4
db{0}> mach cpu 1                               
db{1}> bt        
sys_kevent(b972000, c9d7dc0, c9d7e00, ffffffffffffb160, 409f6d18, 4) at netbsd:s
ys_kevent+0x2c                                                                 
syscall_plain(c9d7ed0, 6, 4093b3fc, 9, 4093b3fc, 800) at netbsd:syscall_plain+0x
138                                                                            
?(5, 0, 0, ffffffffffffb9a0, 10, 0) at 0x10093e4
db{0}> ps/w                                                                    
 PID        LID          COMMAND     EMUL  PRI WAIT-MSG    WAIT-CHANNEL
 234          1               sh   netbsd   41 biowait      27e25d8    
 249          1               sh   netbsd   41 wait         b95d7d8
>220          1             ntpd   netbsd   41              0      
 111          1          syslogd   netbsd   43              0
 85           1         dhclient   netbsd   43 select       1489300
 2            1               sh   netbsd   41 wait         b95da78
 1            1             init   netbsd   43 wait         b95dd18
 0           24           system   netbsd  123 physiod      bf8e308
 0           23           system   netbsd  125 vmem_rehash  bf8e208
 0           22           system   netbsd  125 aiodoned     bf8e148
 0           21           system   netbsd  124 syncer       1452a30
 0           20           system   netbsd  126 pgdaemon     146ffc8
 0           19           system   netbsd   96 raidiow      27790f8
 0           18           system   netbsd   96 rfwcond      27791b8
 0           17           system   netbsd   96 nellevt      2755918
 0           16           system   netbsd   96 sccomp       274e650
 0           15           system   netbsd  127 xcall        c038310
 0           14           system   netbsd  223              0      
 0           13           system   netbsd  220              0
 0           12           system   netbsd  221              0
 0           11           system   netbsd  222              0
 0           10           system   netbsd    0              0
 0            9           system   netbsd   96 pmfevent     bf8e048
 0            8           system   netbsd  125 vrele        14529e0
 0            7           system   netbsd  127 xcall        1814310
 0            6           system   netbsd  223              0      
 0            5           system   netbsd  220              0
 0            4           system   netbsd  221              0
 0            3           system   netbsd  222              0
 0            2           system   netbsd    0              0
 0            1           system   netbsd  125 schedule     1470008

cpu 1 is running syslogd

Martin