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unresponsive domu



This has happened before but I thought I'd update kernel and userland to see 
if it happened again ... and it has.

I really don't know what I'm doing, so here goes:

gogeta# xm console spike

Stopped in pid 0.2 (system) at  netbsd:breakpoint+0x4:  popl    %ebp
db> bt
breakpoint(65c87,0,caa75f78,11,1) at netbsd:breakpoint+0x4
xencons_tty_input(c0ea1ef0,c05be011,1,c03a1afd,3b9aca00) at 
netbsd:xencons_tty_i
nput+0xa6
xencons_handler(c0ea1ef0,caa3ac90,0,caa75fec,20) at 
netbsd:xencons_handler+0x5f
evtchn_do_event(2,caa3ac90,caa3ac48,0,0) at netbsd:evtchn_do_event+0xbd
--- switch to interrupt stack ---
call_evtchn_do_event(caa3ac90,0,11,ca000031,c0100011) at 
netbsd:call_evtchn_do_e
vent+0x1e
hypervisor_callback(ca27dbb4,1,c02d6489,0,0) at 
netbsd:hypervisor_callback+0x65
idle_loop(ca286d80,0,c010006b,c0100063,c010006b) at netbsd:idle_loop+0xf9
db> ps/l
 PID         LID S     FLAGS       STRUCT LWP *               NAME WAIT
 6248          1 3         4           cd1f7000             master tstile
 18497         1 3         4           cd1f7d80               find vnode
 22163         1 3        84           cda8e260           postdrop netio
 13874         1 3        84           cda8e020           sendmail piperd
 29998         1 3        84           cda8eb60                tee piperd
 4904          1 3        84           cc71c260                 sh wait
 16457         1 3        84           cc609000                 sh wait
 6994          1 3        84           cc71c6e0               cron piperd
 16586         1 3        84           cda8e4a0                ssh select
 8291          1 3        80           cd1f7b40                cvs piperd
 3980          1 3         0           cda8eda0                cvs vnode
 12492         1 3        80           cda8e920                 sh wait
 4448          1 3        80           cc609b40               cron piperd
 664           1 3        80           ca2894a0               smbd pause
 647           1 3         4           ca289260              getty tstile
 628           1 3         4           cc609480               cron tstile
 496           1 3        84           cc71c920           postgres select
 533           1 3        84           cc71cda0           postgres select
 383           1 3         4           cc71cb60           postgres tstile
 510           1 3        84           cc609d80               qmgr kqueue
 530           1 3        84           cc6096c0             master kqueue
 328           8 3        84           cc71c020              slapd parked
               7 3        80           cc71c4a0              slapd parked
               6 3        80           ce131000              slapd parked
               5 3        84           cda8e6e0              slapd parked
               4 3        84           cc609900              slapd parked
               3 3        84           cc609240              slapd parked
               2 3        84           cc4ceb60              slapd select
               1 3        80           cc4ce020              slapd parked
 325           1 3         4           cc4ce260               smbd tstile
 313           1 3         4           cc4ce4a0               nmbd tstile
 300           1 3        80           cc4ce6e0               sshd select
 230           1 3        80           ca2896e0             powerd kqueue
 271           1 3   1000004           cc4ce920               ntpd tstile
 214           1 3        84           cc4ceda0          rpc.lockd select
 209           1 3        84           cb696000          rpc.statd select
 206           5 3        84           cb696240              slave nfsd
               4 3        84           cb696480              slave nfsd
               3 3        84           cb6966c0              slave nfsd
               2 3        84           cb696900              slave nfsd
               1 3        80           cb696b40             master select
 187           1 3        84           cb445260             mountd select
 156           1 3        84           cb696d80       lfs_cleanerd segment
 151           1 3        84           cb4454a0      rpc.yppasswdd select
 141           1 3         4           cb4456e0             ypbind tstile
 137           1 3         4           cb445920             ypserv tstile
 131           1 3         4           cb445b60            rpcbind tstile
 106           1 3        84           ca28e000            syslogd kqueue
 1             1 3        84           ca28e900               init wait
>0            28 3       204           cb445020         lfs_writer lfswriter
              27 3       204           cb445da0            physiod physiod
              26 3       204           ca289020        vmem_rehash vmem_rehash
              25 3       204           ca28ed80           aiodoned aiodoned
              24 3       204           ca28eb40            ioflush syncer
              23 3       204           ca28e6c0           pgdaemon pgdaemon
              22 3       204           ca289920          cryptoret crypto_wait
              21 3       204           ca28e240             xenbus rdst
              20 3       204           ca28e480           xenwatch evtsq
              10 3       204           ca289b60           pmfevent pmfevent
               9 3       204           ca289da0            cachegc cachegc
               8 3       204           ca286000              vrele vrele
               7 3       204           ca286240            xcall/0 xcall
               6 1       204           ca286480          softser/0
               5 1       204           ca2866c0          softclk/0
               4 1       204           ca286900          softbio/0
               3 1       204           ca286b40          softnet/0
           >   2 7  20000205           ca286d80             idle/0
               1 3       204           c044b240            swapper schedule
db> ps
 PID           PPID     PGRP        UID S   FLAGS LWPS          COMMAND    
WAIT
 6248           530      530          0 2   0x100    1           master  
tstile
 18497         4904    16457          0 2  0x4000    1             find   
vnode
 22163        13874    16457          0 2  0x4100    1         postdrop   
netio
 13874        16457    16457          0 2  0x4000    1         sendmail  
piperd
 29998        16457    16457          0 2  0x4000    1              tee  
piperd
 4904         16457    16457          0 2  0x4000    1               sh    
wait
 16457         6994    16457          0 2  0x4000    1               sh    
wait
 6994           628      628          0 2       0    1             cron  
piperd
 16586         8291    12492          0 2  0x4000    1              ssh  
select
 8291          3980    12492          0 2       0    1              cvs  
piperd
 3980         12492    12492          0 2  0x4000    1              cvs   
vnode
 12492         4448    12492          0 2  0x4000    1               sh    
wait
 4448           628      628          0 2       0    1             cron  
piperd
 664            325      325          0 2   0x101    1             smbd   
pause
 647              1      647          0 2  0x4000    1            getty  
tstile
 628              1      628          0 2       0    1             cron  
tstile
 496            383      496       1003 2       0    1         postgres  
select
 533            383      533       1003 2       0    1         postgres  
select
 383              1        2       1003 2  0x4000    1         postgres  
tstile
 510            530      530         12 2  0x4100    1             qmgr  
kqueue
 530              1      530          0 2  0x4100    1           master  
kqueue
 328              1      328       1001 2   0x101    8            slapd       
*
 325              1      325          0 2   0x101    1             smbd  
tstile
 313              1      313          0 2     0x1    1             nmbd  
tstile
 300              1      300          0 2       0    1             sshd  
select
 230              1      230          0 2       0    1           powerd  
kqueue
 271              1      271          0 2       0    1             ntpd  
tstile
 214              1      214          0 2       0    1        rpc.lockd  
select
 209              1      209          0 2 0xa0000    1        rpc.statd  
select
 206              1      206          0 2       0    5             nfsd       
*
 187              1      187          0 2       0    1           mountd  
select
 156              1      156          0 2       0    1     lfs_cleanerd 
segment
 151              1      151          0 2       0    1    rpc.yppasswdd  
select
 141              1      141          0 2       0    1           ypbind  
tstile
 137              1      137          0 2 0xa0000    1           ypserv  
tstile
 131              1      131          0 2       0    1          rpcbind  
tstile
 106              1      106          0 2       0    1          syslogd  
kqueue
 1                0        1          0 2  0x4001    1             init    
wait
>0               -1        0          0 2 0x20002   19           system       
*
db> reboot
syncing disks... panic: assert_sleepable: interrupt caller=0xc0348fa1
Stopped in pid 0.2 (system) at  netbsd:breakpoint+0x4:  popl    %ebp

I don't know how to reproduce this, it just happens. If there are more 
commands I can issue to assist ... please let me know. Is there a basic set 
of commands or procedure to follow when dropping to ddb. Sorry for my 
naivety.

Sarton


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