I have one workstation(hp xw4300) , with Solaris 10 (x86). The system may hangs 
occasionally.
I use kmdb to load solaris system.
After the system hangs, the X is frozen, and I can't ping the host.
I can get the crashdump file by pressing "F1+A" and then input "$<systemdump".
____
Looking at the msgbuf,from line 99 to 118, it sames like an disk error.
Who can give me some suggestion?
____
I can't find the source code of 'svc.startd' from opensolaris.org , where can I 
find it ?


     1  > ::msgbuf -v
     2             TIMESTAMP   LOGCTL MESSAGE
     3  2007 Mar 26 15:58:40 d6495b40 pseudo-device: devinfo0
     4  2007 Mar 26 15:58:40 d6495a40 devinfo0 is /pseudo/[EMAIL PROTECTED]
     5  2007 Mar 26 15:58:43 d6588a80 pseudo-device: dtrace0
     6  2007 Mar 26 15:58:43 d5eeb340 dtrace0 is /pseudo/[EMAIL PROTECTED]
     7  2007 Mar 26 15:58:44 d6588b00
     8  pcplusmp: asy (asy) instance 0 vector 0x4 ioapic 0x1 intin 0x4 is bound 
to cpu 0
     9  2007 Mar 26 15:58:44 d617ac80 ISA-device: asy0
    10  2007 Mar 26 15:58:44 d5eeb6c0 asy0 is /isa/[EMAIL PROTECTED],3f8
    11  2007 Mar 26 15:58:44 d5eeb3c0 xsvc0 at root
    12  2007 Mar 26 15:58:44 d6588400 xsvc0 is /xsvc
    13  2007 Mar 26 15:58:46 d6a4ed40 pseudo-device: vol0
    14  2007 Mar 26 15:58:46 d6a4ebc0 vol0 is /pseudo/[EMAIL PROTECTED]
    15  2007 Mar 26 15:58:47 d6a4ec40 pseudo-device: pseudo1
    16  2007 Mar 26 15:58:47 d5eeb440 pseudo1 is /pseudo/[EMAIL PROTECTED]
    17  2007 Mar 26 15:58:47 d5eeb9c0
    18  pcplusmp: ide (ata) instance 0 vector 0xe ioapic 0x1 intin 0xe is bound 
to cpu 0
    19  2007 Mar 26 15:58:47 d617a800
    20  pcplusmp: ide (ata) instance 0 vector 0xe ioapic 0x1 intin 0xe is bound 
to cpu 0
    21  2007 Mar 26 15:58:47 d6495140   ATAPI device at targ 0, lun 0 lastlun 
0x0
    22  2007 Mar 26 15:58:47 d64956c0   model HL-DT-ST CD-ROM GCR-8480B
    23  2007 Mar 26 15:58:47 d6495940 ata_set_feature: (0x66,0x0) failed
    24  2007 Mar 26 15:58:47 d6495bc0 PCI Express-device: [EMAIL PROTECTED], 
ata0
    25  2007 Mar 26 15:58:47 d6495dc0 ata0 is /[EMAIL PROTECTED],0/[EMAIL 
PROTECTED],1/[EMAIL PROTECTED]
    26  2007 Mar 26 15:58:47 d617a900
    27          ATA DMA off: disabled.  Control with "atapi-cd-dma-enabled" 
property
    28  2007 Mar 26 15:58:47 d5eeb140   PIO mode 4 selected
    29  2007 Mar 26 15:58:47 d5636680
    30          ATA DMA off: disabled.  Control with "atapi-cd-dma-enabled" 
property
    31  2007 Mar 26 15:58:47 d617a880   PIO mode 4 selected
    32  2007 Mar 26 15:58:47 d5eebc40
    33          ATA DMA off: disabled.  Control with "atapi-cd-dma-enabled" 
property
    34  2007 Mar 26 15:58:47 d5636080   PIO mode 4 selected
    35  2007 Mar 26 15:58:47 d5636280
    36          ATA DMA off: disabled.  Control with "atapi-cd-dma-enabled" 
property
    37  2007 Mar 26 15:58:47 d5636780   PIO mode 4 selected
    38  2007 Mar 26 15:58:47 d5636180
    39  pcplusmp: fdc (fdc) instance 0 vector 0x6 ioapic 0x1 intin 0x6 is bound 
to cpu 0
    40  2007 Mar 26 15:58:47 dad10d00 ISA-device: fdc0
    41  2007 Mar 26 15:58:47 dad10b80 pseudo-device: ramdisk1024
    42  2007 Mar 26 15:58:47 d617a200 ramdisk1024 is /pseudo/[EMAIL PROTECTED]
    43  2007 Mar 26 15:58:47 d5636380
    44  NOTICE: IRQ17 is being shared by drivers with different interrupt 
levels.
    45  This may result in reduced system performance.
    46  2007 Mar 26 15:58:47 d617a500 NOTICE: bge0/0 registered
    47  2007 Mar 26 15:58:47 d617ab80 fd0 at fdc0
    48  2007 Mar 26 15:58:47 d617a080 fd0 is /isa/[EMAIL PROTECTED],3f0/[EMAIL 
PROTECTED],0
    49  2007 Mar 26 15:58:48 dad10880 sd0 at ata0: target 0 lun 0
    50  2007 Mar 26 15:58:48 dad10a00 sd0 is /[EMAIL PROTECTED],0/[EMAIL 
PROTECTED],1/[EMAIL PROTECTED]/[EMAIL PROTECTED],0
    51  2007 Mar 26 15:58:48 d6495ac0 pseudo-device: lockstat0
    52  2007 Mar 26 15:58:48 d5636100 lockstat0 is /pseudo/[EMAIL PROTECTED]
    53  2007 Mar 26 15:58:48 d64958c0
    54  device pciclass,[EMAIL PROTECTED](display#1) keeps up device [EMAIL 
PROTECTED],0(sd#0), but the latter is not po
    55  wer managed
    56  2007 Mar 26 15:58:48 d6495640 pseudo-device: llc10
    57  2007 Mar 26 15:58:48 d6495f40 llc10 is /pseudo/[EMAIL PROTECTED]
    58  2007 Mar 26 15:58:48 d6588800 pseudo-device: fcsm0
    59  2007 Mar 26 15:58:48 d6495540 fcsm0 is /pseudo/[EMAIL PROTECTED]
    60  2007 Mar 26 15:58:48 dad10700 pseudo-device: lofi0
    61  2007 Mar 26 15:58:48 d4531740 lofi0 is /pseudo/[EMAIL PROTECTED]
    62  2007 Mar 26 15:58:49 d45318c0 pseudo-device: profile0
    63  2007 Mar 26 15:58:49 d4531440 profile0 is /pseudo/[EMAIL PROTECTED]
    64  2007 Mar 26 15:58:49 d45315c0 pseudo-device: systrace0
    65  2007 Mar 26 15:58:49 d4531140 systrace0 is /pseudo/[EMAIL PROTECTED]
    66  2007 Mar 26 15:58:49 d47c7f80 pseudo-device: fbt0
    67  2007 Mar 26 15:58:49 d47c7e00 fbt0 is /pseudo/[EMAIL PROTECTED]
    68  2007 Mar 26 15:58:49 d47c7c80 pseudo-device: sdt0
    69  2007 Mar 26 15:58:49 d47c7b00 sdt0 is /pseudo/[EMAIL PROTECTED]
    70  2007 Mar 26 15:58:49 d617af80 pseudo-device: fasttrap0
    71  2007 Mar 26 15:58:49 d6a4ecc0 fasttrap0 is /pseudo/[EMAIL PROTECTED]
    72  2007 Mar 26 15:58:49 d6588b80 pseudo-device: fssnap0
    73  2007 Mar 26 15:58:49 d47c7680 fssnap0 is /pseudo/[EMAIL PROTECTED]
    74  2007 Mar 26 15:58:49 d47c7380 pseudo-device: winlock0
    75  2007 Mar 26 15:58:49 d5636700 winlock0 is /pseudo/[EMAIL PROTECTED]
    76  2007 Mar 26 15:58:49 d47c7800 pseudo-device: rsm0
    77  2007 Mar 26 15:58:49 d47c7200 rsm0 is /pseudo/[EMAIL PROTECTED]
    78  2007 Mar 26 15:58:49 dad10e80 pseudo-device: pool0
    79  2007 Mar 26 15:58:49 d5636800 pool0 is /pseudo/[EMAIL PROTECTED]
    80  2007 Mar 26 15:58:49 d495af40 IP Filter: v4.0.3, running.
    81  2007 Mar 26 15:58:49 d5636a80 pseudo-device: fcp0
    82  2007 Mar 26 15:58:49 d5636b80 fcp0 is /pseudo/[EMAIL PROTECTED]
    83  2007 Mar 26 15:58:49 d5636c80
    84          ATA DMA off: disabled.  Control with "atapi-cd-dma-enabled" 
property
    85  2007 Mar 26 15:58:49 d5636d80   PIO mode 4 selected
    86  2007 Mar 26 15:58:49 d5636e80
    87          ATA DMA off: disabled.  Control with "atapi-cd-dma-enabled" 
property
    88  2007 Mar 26 15:58:49 d4b68040   PIO mode 4 selected
    89  2007 Mar 26 15:58:49 d4b682c0
    90          ATA DMA off: disabled.  Control with "atapi-cd-dma-enabled" 
property
    91  2007 Mar 26 15:58:49 d4b683c0   PIO mode 4 selected
    92  2007 Mar 26 15:58:49 d4b684c0
    93          ATA DMA off: disabled.  Control with "atapi-cd-dma-enabled" 
property
    94  2007 Mar 26 15:58:49 d4b685c0   PIO mode 4 selected
    95  2007 Mar 26 15:58:49 d4b687c0   UltraDMA mode 5 selected
    96  2007 Mar 26 15:58:59 d495aac0 NOTICE: bge0/0 unregistered
    97  2007 Mar 26 15:59:01 d4b79c00 pseudo-device: devinfo0
    98  2007 Mar 26 15:59:01 d495a940 devinfo0 is /pseudo/[EMAIL PROTECTED]
    99  2007 Apr 11 08:28:13 d6cd9e40
   100  WARNING: /[EMAIL PROTECTED],0/[EMAIL PROTECTED],2/[EMAIL PROTECTED] 
(ata2):
   101          timeout: abort request, target=0 lun=0
   102  2007 Apr 11 08:28:13 d6cf2900
   103  WARNING: /[EMAIL PROTECTED],0/[EMAIL PROTECTED],2/[EMAIL PROTECTED] 
(ata2):
   104          timeout: abort device, target=0 lun=0
   105  2007 Apr 11 08:28:13 d617a280
   106  WARNING: /[EMAIL PROTECTED],0/[EMAIL PROTECTED],2/[EMAIL PROTECTED] 
(ata2):
   107          timeout: reset target, target=0 lun=0
   108  2007 Apr 11 08:28:13 d6cd9dc0
   109  WARNING: /[EMAIL PROTECTED],0/[EMAIL PROTECTED],2/[EMAIL PROTECTED] 
(ata2):
   110          timeout: reset bus, target=0 lun=0
   111  2007 Apr 11 08:28:13 d617a400
   112  WARNING: /[EMAIL PROTECTED],0/[EMAIL PROTECTED],2/[EMAIL 
PROTECTED]/[EMAIL PROTECTED],0 (Disk0):
   113          Error for command 'write sector'        Error Level: 
Informational
   114  2007 Apr 11 08:28:13 d4531a40   Sense Key: aborted command
   115  2007 Apr 11 08:28:13 d6a4e440   Vendor 'Gen-ATA ' error code: 0x3
   116  2007 Apr 11 08:28:13 d6ce4e00 WARNING: Error writing ufs log
   117  2007 Apr 11 08:28:13 d6cd9840 WARNING: ufs log for /usr changed state 
to Error
   118  2007 Apr 11 08:28:13 d6ce4e80 WARNING: Please umount(1M) /usr and run 
fsck(1M)
   119  2007 Apr 11 08:43:19 d7c753c0
   120  ^Mpanic[cpu0]/thread=d4561de0:
   121  2007 Apr 11 08:43:19 d7c754c0
   122  BAD TRAP: type=e (#pf Page fault) rp=d4561bec addr=0 occurred in module 
"<unknown>" due to
   123   a NULL pointer dereference
   124  2007 Apr 11 08:43:19 d7c75240
   125
   126  2007 Apr 11 08:43:19 dad10d80 sched:
   127  2007 Apr 11 08:43:19 d7c75340 #pf Page fault
   128  2007 Apr 11 08:43:19 d7c752c0 Bad kernel fault at addr=0x0
   129  2007 Apr 11 08:43:19 d7c75540 pid=0, pc=0x0, sp=0x202, eflags=0x10002
   130  2007 Apr 11 08:43:19 d7c75140
   131  cr0: 8005003b<pg,wp,ne,et,ts,mp,pe> cr4: 6b8<xmme,fxsr,pge,pae,pse,de>
   132  2007 Apr 11 08:43:19 d7c75040 cr2: 0 cr3: 7665000
   133  2007 Apr 11 08:43:19 d7c75440    gs:      1b0  fs:        0  es:      
160  ds:      160
   134  2007 Apr 11 08:43:19 d7c751c0   edi:        0 esi: d4538e40 ebp: 
d4561c3c esp: d4561c24
   135  2007 Apr 11 08:43:19 d7c73e80   ebx: d47ae9c0 edx: d47aea38 ecx:        
4 eax: fec88b08
   136  2007 Apr 11 08:43:19 d7c73e00   trp:        e err:       10 eip:        
0  cs:      158
   137  2007 Apr 11 08:43:19 d7c73d80   efl:    10002 usp:      202  ss: 
d4561c44
   138  2007 Apr 11 08:43:19 d7c73d00
   139  2007 Apr 11 08:43:19 d7c73c80 d4561b4c unix:die+a7 (e, d4561bec, 0, 0)
   140  2007 Apr 11 08:43:19 d7c73c00 d4561bd8 unix:trap+103f (d4561bec, 0, 0)
   141  2007 Apr 11 08:43:19 d7c73b00 d4561bec unix:cmntrap+9a (1b0, 0, 160, 
160, 0)
   142  2007 Apr 11 08:43:19 d7c73a80 d4561c3c 0 (d4561c4c, fe813409,)
   143  2007 Apr 11 08:43:19 d7c73a00 d4561c44 genunix:kdi_dvec_enter+a 
(d4561c58, fe8133ab,)
   144  2007 Apr 11 08:43:19 d7c73900 d4561c4c unix:debug_enter+32 (0)
   145  2007 Apr 11 08:43:19 d7c73880 d4561c58 unix:abort_sequence_enter+27 (0)
   146  2007 Apr 11 08:43:19 d7c73800 d4561c6c kbtrans:kbtrans_streams_key+3e 
(d47ae9c0, 4, 0)
   147  2007 Apr 11 08:43:19 d7c73780 d4561c88 conskbd:conskbdlrput+14b 
(d4952180, d7c74fc0)
   148  2007 Apr 11 08:43:19 d7c73700 d4561cb8 unix:putnext+1b7 (d4952180, 
d7c74fc0)
   149  2007 Apr 11 08:43:19 d7c73680 d4561cd4 kbtrans:kbtrans_queueevent+5c 
(d47ae900, d4561d00)
   150  2007 Apr 11 08:43:19 d7c73580
   151  d4561ce8 kbtrans:kbtrans_queuepress+5f (d47ae900, 4, d4561d)
   152  2007 Apr 11 08:43:19 d7c73500
   153  d4561d10 kbtrans:kbtrans_untrans_keypressed_raw+36 (d47ae900, 4)
   154  2007 Apr 11 08:43:19 d7c73480
   155  d4561d20 kbtrans:kbtrans_processkey+30 (d47ae900, d4b2d3d0,)
   156  2007 Apr 11 08:43:19 d7c73400 d4561d40 kbtrans:kbtrans_streams_key+95 
(d47ae900, 4, 0)
   157  2007 Apr 11 08:43:19 d7c73380 d4561d54 kb8042:kb8042_dip+29fae0c8 
(d4bb7108, 1f, 0)
   158  2007 Apr 11 08:43:19 d7c73300 d4561d78 kb8042:kb8042_dip+29fae05c 
(d4bb7108, 1e)
   159  2007 Apr 11 08:43:19 d7c73280 d4561d90 kb8042:kb8042_dip+29fae144 
(d4bb7108, 0)
   160  2007 Apr 11 08:43:19 d7c73200 d4561dac i8042:i8042_intr+a6 (d47af840, 0)
   161  2007 Apr 11 08:43:19 d7c73180
   162  2007 Apr 11 08:43:19 d7c73100 syncing file systems...
   163  2007 Apr 11 08:43:19 d7c73080  2
   164  2007 Apr 11 08:43:20 d7c6ef40  done
   165  2007 Apr 11 08:43:21 d7c6eec0 dumping to /dev/dsk/c1d0s4, offset 
429391872, content: all
   166
   167  >  ::ps
   168  S    PID   PPID   PGID    SID    UID      FLAGS     ADDR NAME
   169  R      0      0      0      0      0 0x00000001 fec1ecbc sched
   170  R      3      0      0      0      0 0x00020001 d4ed6278 fsflush
   171  R      2      0      0      0      0 0x00020001 d4ed6ae0 pageout
   172  R      1      0      0      0      0 0x42004000 d4ed7348 init
   173  R    343      1    310    310      0 0x42014000 d4ec7290 ttymon
   174  R    594      1      7      7      0 0x42000000 d4ebc1d0 CETC_CMD
   175  R    797      1    773    773   1003 0x42004000 d78201e0 CETC_ZLC
   176  Z    851    797    773    773   1003 0xc2000002 d781e040 CETC_ZLC
   177  R    811      1    799    799   1003 0x42000000 d781a118 CETC_NET
   178  R    805      1    798    798   1003 0x42000000 d781d388 CETC_NETC
   179  R    774      1    773    773   1003 0x42004000 d78238a0 sdtvolcheck
   180  R    913    774    773    773   1003 0x42004000 d7820a48 cat
   181  R    775      1    772    772   1003 0x42004000 d7823038 sdtvolcheck
   182  R    911    775    772    772   1003 0x42004000 d78212b0 cat
   183  R    514      1    514    514      0 0x42000000 d4ecb1b8 devfsadm
   184  R    509      1    509    509      0 0x42014000 d4ec1a30 vold
   185  R    484      1    484    484      0 0x42000000 d4ebdb08 sshd
   186  R    367      1    367    367      0 0x42020000 d4ec6a28 snmpXdmid
   187  R    359      1    359    359      0 0x42000000 d4ed1280 dmispd
   188  R    356      1    355    355      0 0x42010000 d4ec5958 smcboot
   189  R    358    356    355    355      0 0x42010000 d4ec4888 smcboot
   190  R    357    356    355    355      0 0x42010000 d4ec50f0 smcboot
   191  R    301      1    301    301      1 0x42000000 d4ed3008 lockd
   192  R    277      1    277    277      1 0x42000000 d4ece010 statd
   193  R    275      1    272    272      1 0x42000000 d4eca0e8 nfs4cbd
   194  R    270      1    270    270      1 0x42000000 d4ecba20 rpcbind
   195  R    160      1    160    160      1 0x42000000 d4ece878 kcfd
   196  R    159      1    159    159      0 0x42000000 d4ed0a18 powerd
   197  R    157      1    157    157      0 0x42000000 d4ed40d8 picld
   198  R    140      1    140    140      0 0x42000000 d4ed2350 syseventd
   199  R      9      1      9      9      0 0x42000000 d4ed4940 svc.configd
   200  R      7      1      7      7      0 0x42000000 d4ed51a8 svc.startd
   201  R  24268      7  24268  24268      0 0x42000000 d4ec9880 svc.startd
   202  >
   203  >
   204  > ::cpuinfo -v
   205   ID ADDR     FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD   PROC
   206    0 fec24128  1b    2    0 164  yes    no t-1    d4561de0 sched
   207                 |    |    |
   208      RUNNING <--+    |    +--> PIL THREAD
   209        READY         |           5 d4561de0
   210       EXISTS         |           - d564d400 svc.startd
   211       ENABLE         |
   212                      +-->  PRI THREAD   PROC
   213                             60 d4e04a00 fsflush
   214                              0 d56d2a00 svc.startd
   215

> d564d400::findstack -v
stack pointer for thread d564d400: d56dbab4
[ d56dbab4 thread_start() ]
  d56dbb18 fakesoftint_return+2(dadb2670)
  d56dbb50 x86pte_invalidate_pfn+0x10c(d4ff4a28, 46, 4044, 0)
  d56dbb8c hat_pte_unmap+0xc4(d4ff4a28, 46, 10, 4044005, 0, 0)
  d56dbc34 hat_unload_callback+0xdc(dadb2668, d2990000, b8000, 10, d56dbc60)
  d56dbc9c segvn_unmap+0x14b(d6928ca8, d2990000, b8000)
  d56dbcc4 as_free+0xe4(d4e03548)
  d56dbcdc relvm+0xb8()
  d56dbd08 exec_args+0x1e5(d56dbf34, d56dbec8, 0, d56dbd7c)
  d56dbd94 elfexec+0x238(d52e3f00, d56dbf34, d56dbec8, 0, 0, d56dbf6c)
  d56dbe5c gexec+0x2fd(d56dbf64, d56dbf34, d56dbec8, 0, 0, d56dbf6c)
  d56dbf70 exec_common+0x2cf(8072d34, cf62df80, 8047f30)
  d56dbf84 exece+0x11()
  d56dbfac sys_call+0x100()
 
 
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