GENERIC RELENG_6 from Nov 2 18:46 UTC, vmcore.113

GDB: no debug ports present
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2006 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 6.2-PRERELEASE #0: Thu Nov  2 22:48:33 CET 2006
    root@crashbox.osted.lan:/usr/src/sys/i386/compile/PHO
WARNING: WITNESS option enabled, expect reduced performance.
ACPI APIC Table: <A M I  OEMAPIC >
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) XEON(TM) CPU 1.80GHz (1799.80-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0xf24  Stepping = 4
  Features=0x3febfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM>
  Logical CPUs per core: 2
real memory  = 1073676288 (1023 MB)
avail memory = 1032548352 (984 MB)
:
Trying to mount root from ufs:/dev/ad0s1a
fxp0: link state changed to UP
fsync: giving up on dirty
0xc568c6cc: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 92 mountedhere 0xc5648500
    flags ()
    v_object 0xc1870948 ref 0 pages 1297
     lock type devfs: EXCL (count 1) by thread 0xc6e4a300 (pid 95243)#0 0xc066b2d9 at lockmgr+0x4ed
#1 0xc06c39f5 at vop_stdlock+0x21
#2 0xc088cebb at VOP_LOCK_APV+0x87
#3 0xc06d89b4 at vn_lock+0xac
#4 0xc07b1825 at softdep_flushworklist+0x39
#5 0xc07bcc2d at ffs_sync+0x285
#6 0xc06d90c6 at vfs_write_suspend+0xae
#7 0xc07ab865 at ffs_snapshot+0xb45
#8 0xc07bad64 at ffs_mount+0x8d8
#9 0xc06c7b87 at vfs_domount+0x687
#10 0xc06c735b at vfs_donmount+0x2ef
#11 0xc06c9af9 at kernel_mount+0x6d
#12 0xc07baf39 at ffs_cmount+0x5d
#13 0xc06c74ee at mount+0x156
#14 0xc087a70f at syscall+0x22f
#15 0xc086631f at Xint0x80_syscall+0x1f

        dev ad0s1e
fsync: giving up on dirty
0xc568c6cc: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 1405 mountedhere 0xc5648500
    flags ()
    v_object 0xc1870948 ref 0 pages 5606
     lock type devfs: EXCL (count 1) by thread 0xc76d4180 (pid 70387)#0 0xc066b2d9 at lockmgr+0x4ed
#1 0xc06c39f5 at vop_stdlock+0x21
#2 0xc088cebb at VOP_LOCK_APV+0x87
#3 0xc06d89b4 at vn_lock+0xac
#4 0xc07b1825 at softdep_flushworklist+0x39
#5 0xc07bcc2d at ffs_sync+0x285
#6 0xc06d90c6 at vfs_write_suspend+0xae
#7 0xc07ab865 at ffs_snapshot+0xb45
#8 0xc07bad64 at ffs_mount+0x8d8
#9 0xc06c7b87 at vfs_domount+0x687
#10 0xc06c735b at vfs_donmount+0x2ef
#11 0xc06c9af9 at kernel_mount+0x6d
#12 0xc07baf39 at ffs_cmount+0x5d
#13 0xc06c74ee at mount+0x156
#14 0xc087a70f at syscall+0x22f
#15 0xc086631f at Xint0x80_syscall+0x1f

        dev ad0s1e
fsync: giving up on dirty
0xc568c6cc: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 372 mountedhere 0xc5648500
    flags ()
    v_object 0xc1870948 ref 0 pages 1474
     lock type devfs: EXCL (count 1) by thread 0xc5e70a80 (pid 70636)#0 0xc066b2d9 at lockmgr+0x4ed
#1 0xc06c39f5 at vop_stdlock+0x21
#2 0xc088cebb at VOP_LOCK_APV+0x87
#3 0xc06d89b4 at vn_lock+0xac
#4 0xc07b1825 at softdep_flushworklist+0x39
#5 0xc07bcc2d at ffs_sync+0x285
#6 0xc06d90c6 at vfs_write_suspend+0xae
#7 0xc07ab865 at ffs_snapshot+0xb45
#8 0xc07bad64 at ffs_mount+0x8d8
#9 0xc06c7b87 at vfs_domount+0x687
#10 0xc06c735b at vfs_donmount+0x2ef
#11 0xc06c9af9 at kernel_mount+0x6d
#12 0xc07baf39 at ffs_cmount+0x5d
#13 0xc06c74ee at mount+0x156
#14 0xc087a70f at syscall+0x22f
#15 0xc086631f at Xint0x80_syscall+0x1f

        dev ad0s1e
fsync: giving up on dirty
0xc568c6cc: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 494 mountedhere 0xc5648500
    flags ()
    v_object 0xc1870948 ref 0 pages 1962
     lock type devfs: EXCL (count 1) by thread 0xc8242d80 (pid 84255)#0 0xc066b2d9 at lockmgr+0x4ed
#1 0xc06c39f5 at vop_stdlock+0x21
#2 0xc088cebb at VOP_LOCK_APV+0x87
#3 0xc06d89b4 at vn_lock+0xac
#4 0xc07b1825 at softdep_flushworklist+0x39
#5 0xc07bcc2d at ffs_sync+0x285
#6 0xc06d90c6 at vfs_write_suspend+0xae
#7 0xc07ab865 at ffs_snapshot+0xb45
#8 0xc07bad64 at ffs_mount+0x8d8
#9 0xc06c7b87 at vfs_domount+0x687
#10 0xc06c735b at vfs_donmount+0x2ef
#11 0xc06c9af9 at kernel_mount+0x6d
#12 0xc07baf39 at ffs_cmount+0x5d
#13 0xc06c74ee at mount+0x156
#14 0xc087a70f at syscall+0x22f
#15 0xc086631f at Xint0x80_syscall+0x1f

        dev ad0s1e
fsync: giving up on dirty
0xc568c6cc: tag devfs, type VCHR
    usecount 1, writecount 0, refcount 94 mountedhere 0xc5648500
    flags ()
    v_object 0xc1870948 ref 0 pages 361
     lock type devfs: EXCL (count 1) by thread 0xc76d3000 (pid 1497)#0 0xc066b2d9 at lockmgr+0x4ed
#1 0xc06c39f5 at vop_stdlock+0x21
#2 0xc088cebb at VOP_LOCK_APV+0x87
#3 0xc06d89b4 at vn_lock+0xac
#4 0xc07b1825 at softdep_flushworklist+0x39
#5 0xc07bcc2d at ffs_sync+0x285
#6 0xc06d90c6 at vfs_write_suspend+0xae
#7 0xc07ab865 at ffs_snapshot+0xb45
#8 0xc07bad64 at ffs_mount+0x8d8
#9 0xc06c7b87 at vfs_domount+0x687
#10 0xc06c735b at vfs_donmount+0x2ef
#11 0xc06c9af9 at kernel_mount+0x6d
#12 0xc07baf39 at ffs_cmount+0x5d
#13 0xc06c74ee at mount+0x156
#14 0xc087a70f at syscall+0x22f
#15 0xc086631f at Xint0x80_syscall+0x1f

        dev ad0s1e
interrupt                   total
irq1: atkbd0                           4
irq4: sio0                          4904
irq6: fdc0                             3
irq14: ata0                      1257873
irq16: uhci0                           1
irq17: fxp0                       230585
cpu0: timer                     29309894
cpu3: timer                     29316140
cpu1: timer                     29314040
cpu2: timer                     29314047
Total                   118747833
KDB: stack backtrace:
kdb_backtrace(c08f2afe,713f2b9,0,c09c1864,c09c0b7c,...) at kdb_backtrace+0x29
watchdog_fire(c0a5cf60,c5424018,e3d7cc8c,c086cb29,e3d7cc94,...) at watchdog_fire+0x9d
hardclock(e3d7cc94) at hardclock+0xd5
lapic_handle_timer(0) at lapic_handle_timer+0x51
Xtimerint(c09e1ec0,1,e3d7ccf8,1,c52f7648,...) at Xtimerint+0x30
acpi_cpu_idle(e3d7cd0c,c06626b9,c066265c,e3d7cd24,c066249c,...) at acpi_cpu_idle+0x15a
cpu_idle(c066265c,e3d7cd24,c066249c,0,e3d7cd38,...) at cpu_idle+0x28
idle_proc(0,e3d7cd38,0,c066265c,0,...) at idle_proc+0x5d
fork_exit(c066265c,0,e3d7cd38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xe3d7cd6c, ebp = 0 ---
KDB: enter: watchdog timeout
[thread pid 13 tid 100003 ]
Stopped at      kdb_enter+0x2b: nop
db> show alllocks
db> show allpcpu
Current CPU: 0

cpuid        = 0
curthread    = 0xc52f8a80: pid 13 "idle: cpu0"
curpcb       = 0xe3d7cd90
fpcurthread  = none
idlethread   = 0xc52f8a80: pid 13 "idle: cpu0"
APIC ID      = 0
currentldt   = 0x50
spin locks held:

cpuid        = 1
curthread    = 0xc52f8900: pid 12 "idle: cpu1"
curpcb       = 0xe3d79d90
fpcurthread  = none
idlethread   = 0xc52f8900: pid 12 "idle: cpu1"
APIC ID      = 1
currentldt   = 0x50
spin locks held:

cpuid        = 2
curthread    = 0xc52f8780: pid 11 "idle: cpu2"
curpcb       = 0xe3d76d90
fpcurthread  = none
idlethread   = 0xc52f8780: pid 11 "idle: cpu2"
APIC ID      = 6
currentldt   = 0x50
spin locks held:

cpuid        = 3
curthread    = 0xc52f8600: pid 10 "idle: cpu3"
curpcb       = 0xe3d73d90
fpcurthread  = none
idlethread   = 0xc52f8600: pid 10 "idle: cpu3"
APIC ID      = 7
currentldt   = 0x50
spin locks held:

db> show lockedvnods
Locked vnodes

0xc82a1000: tag ufs, type VDIR
    usecount 0, writecount 0, refcount 4 mountedhere 0
    flags ()
    v_object 0xc6637b58 ref 0 pages 1
     lock type ufs: EXCL (count 1) by thread 0xc56a0900 (pid 696) with 1 pending#0 0xc066b2d9 at lockmgr+0x4ed
#1 0xc07be076 at ffs_lock+0x76
#2 0xc088cebb at VOP_LOCK_APV+0x87
#3 0xc06d89b4 at vn_lock+0xac
#4 0xc06cca9c at vrele+0x110
#5 0xc0769900 at nfsrv_readdir+0x1078
#6 0xc076ff3d at nfssvc_nfsd+0x3ed
#7 0xc076f878 at nfssvc+0x18c
#8 0xc087a70f at syscall+0x22f
#9 0xc086631f at Xint0x80_syscall+0x1f

        ino 1939, on dev ad0s1e

0xc80d5ae0: tag ufs, type VREG
    usecount 1, writecount 0, refcount 79 mountedhere 0
    flags ()
     lock type ufs: EXCL (count 1) by thread 0xc77b6900 (pid 1525)#0 0xc066b2d9 at lockmgr+0x4ed
#1 0xc07be076 at ffs_lock+0x76
#2 0xc088cebb at VOP_LOCK_APV+0x87
#3 0xc06d89b4 at vn_lock+0xac
#4 0xc07ab8a9 at ffs_snapshot+0xb89
#5 0xc07bad64 at ffs_mount+0x8d8
#6 0xc06c7b87 at vfs_domount+0x687
#7 0xc06c735b at vfs_donmount+0x2ef
#8 0xc06c9af9 at kernel_mount+0x6d
#9 0xc07baf39 at ffs_cmount+0x5d
#10 0xc06c74ee at mount+0x156
#11 0xc087a70f at syscall+0x22f
#12 0xc086631f at Xint0x80_syscall+0x1f

        ino 211968, on dev ad0s1e

0xc5a6c15c: tag nfs, type VDIR
    usecount 2, writecount 0, refcount 6 mountedhere 0
    flags (VV_ROOT)
    v_object 0xc5db1084 ref 0 pages 2
     lock type nfs: EXCL (count 1) by thread 0xc5707180 (pid 1543)#0 0xc066b2d9 at lockmgr+0x4ed
#1 0xc06c39f5 at vop_stdlock+0x21
#2 0xc088cebb at VOP_LOCK_APV+0x87
#3 0xc06d89b4 at vn_lock+0xac
#4 0xc06cc822 at vget+0xc2
#5 0xc06c4839 at vfs_hash_get+0x8d
#6 0xc0752a31 at nfs_nget+0x95
#7 0xc07584c9 at nfs_root+0x25
#8 0xc06c5c53 at lookup+0x743
#9 0xc06c52ae at namei+0x37e
#10 0xc06d79af at vn_open_cred+0x277
#11 0xc06d7736 at vn_open+0x1e
#12 0xc06d0bea at kern_open+0xb6
#13 0xc06d0afe at open+0x1a
#14 0xc087a70f at syscall+0x22f
#15 0xc086631f at Xint0x80_syscall+0x1f

        fileid 2 fsid 0x700ff18

0xc58726cc: tag nfs, type VDIR
    usecount 2, writecount 0, refcount 4 mountedhere 0
    flags ()
    v_object 0xc738739c ref 0 pages 1
     lock type nfs: EXCL (count 1) by thread 0xc5615180 (pid 1527)#0 0xc066b2d9 at lockmgr+0x4ed
#1 0xc06c39f5 at vop_stdlock+0x21
#2 0xc088cebb at VOP_LOCK_APV+0x87
#3 0xc06d89b4 at vn_lock+0xac
#4 0xc06d54d6 at getdirentries+0xee
#5 0xc087a70f at syscall+0x22f
#6 0xc086631f at Xint0x80_syscall+0x1f

        fileid 1939 fsid 0x700ff18
db> show lockedbufs
buf at 0xd94314b0
b_flags = 0x80000020<remfree,cache>
b_error = 0, b_bufsize = 16384, b_bcount = 16384, b_resid = 0
b_bufobj = (0xc80d5bec), b_data = 0xdb700000, b_blkno = 3399232
b_npages = 4, pages(OBJ, IDX, PA): (0xc0a3de00, 0x1b801, 0x2e861000),(0xc0a3de00, 0x1b802, 0x178e2000),(0xc0a3de00, 0x1b803, 0x3cae3000),(0xc0a3de00, 0x1b804, 0x34864000)
 lock type getblk: EXCL (count 1) by thread 0xc77b6900 (pid 1525)#0 0xc066b2d9 at lockmgr+0x4ed
#1 0xc06be943 at getblk+0x12f
#2 0xc06bbab9 at breadn+0x31
#3 0xc06bba84 at bread+0x20
#4 0xc07abb79 at ffs_snapshot+0xe59
#5 0xc07bad64 at ffs_mount+0x8d8
#6 0xc06c7b87 at vfs_domount+0x687
#7 0xc06c735b at vfs_donmount+0x2ef
#8 0xc06c9af9 at kernel_mount+0x6d
#9 0xc07baf39 at ffs_cmount+0x5d
#10 0xc06c74ee at mount+0x156
#11 0xc087a70f at syscall+0x22f
#12 0xc086631f at Xint0x80_syscall+0x1f

buf at 0xd95945f0
b_flags = 0x20000000<vmio>
b_error = 0, b_bufsize = 4096, b_bcount = 4096, b_resid = 0
b_bufobj = (0xc58727d8), b_data = 0xdef40000, b_blkno = 0
b_npages = 1, pages(OBJ, IDX, PA): (0xc738739c, 0x0, 0x1c5ba000)
 lock type bufwait: EXCL (count 1) by thread 0xc5615180 (pid 1527)#0 0xc066b2d9 at lockmgr+0x4ed
#1 0xc06bd76c at getnewbuf+0x144
#2 0xc06bebc7 at getblk+0x3b3
#3 0xc075196d at nfs_getcacheblk+0xb1
#4 0xc0750629 at nfs_bioread+0x8fd
#5 0xc075c5ae at nfs_readdir+0xe6
#6 0xc088ca9f at VOP_READDIR_APV+0x9b
#7 0xc06d5527 at getdirentries+0x13f
#8 0xc087a70f at syscall+0x22f
#9 0xc086631f at Xint0x80_syscall+0x1f

db> set $lines 0
db> ps
  pid  ppid  pgrp   uid   state   wmesg     wchan    cmd
 1543  1542   844     0  S       nfsreq   0xc8491280 ls
 1542   844   844     0  S       wait     0xc58b5860 sh
 1527  1526  1475  1001  S+      nfsreq   0xc657f780 find
 1526  1500  1475  1001  S+      wait     0xc7612c90 sh
 1525   941   941     0  S+      ufs      0xc82a1058 mksnap_ffs
 1500  1499  1475  1001  S+      wait     0xc5d9d218 run
 1499  1498  1475  1001  SW+     wait     0xc5702648 run
 1498  1475  1475  1001  S+      nanslp   0xc09e27ec run
 1475  1454  1475  1001  SW+     wait     0xc5703a78 sh
 1454  1453  1454  1001  SWs+    wait     0xc5da0860 bash
 1453  1451  1451  1001  S       select   0xc0a2fb44 sshd
 1451   779  1451     0  SWs     sbwait   0xc57c279c sshd
  941   935   941     0  S+      wait     0xc56c5648 sh
  935   932   935     0  SW+     wait     0xc569f430 bash
  932   931   932     0  SW+     pause    0xc56c8cc4 csh
  931   919   931  1001  SW+     wait     0xc58b5218 su
  919   918   919  1001  SWs+    wait     0xc5613648 bash
  918   916   916  1001  S       select   0xc0a2fb44 sshd
  916   779   916     0  SWs     sbwait   0xc58b0900 sshd
  915   909   915  1001  S+      select   0xc0a2fb44 top
  909   908   909  1001  SWs+    wait     0xc5703218 bash
  908   906   906  1001  S       select   0xc0a2fb44 sshd
  906   779   906     0  SWs     sbwait   0xc57cce90 sshd
  905     1   905     0  SWs+    ttyin    0xc54c8c10 getty
  904     1   904     0  SWs+    ttyin    0xc54cb010 getty
  903     1   903     0  SWs+    ttyin    0xc54ca010 getty
  902     1   902     0  SWs+    ttyin    0xc54c9410 getty
  901     1   901     0  SWs+    ttyin    0xc54c9810 getty
  900     1   900     0  SWs+    ttyin    0xc54c2010 getty
  899     1   899     0  SWs+    ttyin    0xc54cb410 getty
  898     1   898     0  SWs+    ttyin    0xc54ca410 getty
  884     1   884     0  SWs     select   0xc0a2fb44 inetd
  860     1   860     0  SWs     select   0xc0a2fb44 moused
  844     1   844     0  Ss      wait     0xc5703430 watchdogd
  795     1   795     0  Ss      nanslp   0xc09e27ec cron
  789     1   789    25  Ss      pause    0xc58b4034 sendmail
  785     1   785     0  Ss      select   0xc0a2fb44 sendmail
  779     1   779     0  SWs     select   0xc0a2fb44 sshd
  728     1   728     0  Ss      select   0xc0a2fb44 usbd
  699   695   695     0  S       -        0xc5609200 nfsd
  698   695   695     0  S       -        0xc562ea00 nfsd
  697   695   695     0  S       -        0xc5609400 nfsd
  696   695   695     0  S       suspfs   0xc5686964 nfsd
  695     1   695     0  SWs     select   0xc0a2fb44 nfsd
  693     1   693     0  SWs     select   0xc0a2fb44 mountd
  641     1   641     0  Ss      select   0xc0a2fb44 rpcbind
  621     1   621     0  Ss      select   0xc0a2fb44 syslogd
  553     1   553     0  SWs     select   0xc0a2fb44 devd
   42     0     0     0  SL      -        0xe57fed04 [schedcpu]
   41     0     0     0  SL      sdflush  0xc0a3d554 [softdepflush]
   40     0     0     0  SL      vlruwt   0xc5613c90 [vnlru]
   39     0     0     0  SL      syncer   0xc09e2560 [syncer]
   38     0     0     0  SL      psleep   0xc0a300ac [bufdaemon]
   37     0     0     0  SL      pgzero   0xc0a3e4c4 [pagezero]
   36     0     0     0  SL      psleep   0xc0a3e014 [vmdaemon]
   35     0     0     0  SL      psleep   0xc0a3dfd0 [pagedaemon]
   34     0     0     0  WL                          [irq7: ppc0]
   33     0     0     0  SL      -        0xc5406e3c [fdc0]
   32     0     0     0  WL                          [swi0: sio]
   31     0     0     0  WL                          [irq12: psm0]
   30     0     0     0  WL                          [irq1: atkbd0]
   29     0     0     0  WL                          [irq15: ata1]
   28     0     0     0  WL                          [irq14: ata0]
   27     0     0     0  WL                          [irq17: fxp0]
   26     0     0     0  SL      usbtsk   0xc09df424 [usbtask]
   25     0     0     0  SL      usbevt   0xc540c210 [usb0]
   24     0     0     0  WL                          [irq16: uhci0]
   23     0     0     0  WL                          [irq48: em0]
   22     0     0     0  WL                          [irq9: acpi0]
    9     0     0     0  SL      -        0xc5409900 [thread taskq]
   21     0     0     0  WL                          [swi6: Giant taskq]
   20     0     0     0  WL                          [swi6: task queue]
    8     0     0     0  SL      -        0xc5348200 [acpi_task_2]
    7     0     0     0  SL      -        0xc5348200 [acpi_task_1]
    6     0     0     0  SL      -        0xc5348200 [acpi_task_0]
    5     0     0     0  SL      -        0xc5348280 [kqueue taskq]
   19     0     0     0  WL                          [swi2: cambio]
   18     0     0     0  WL                          [swi5: +]
   17     0     0     0  SL      -        0xc09dd140 [yarrow]
    4     0     0     0  SL      -        0xc09dfca8 [g_down]
    3     0     0     0  SL      -        0xc09dfca4 [g_up]
    2     0     0     0  SL      -        0xc09dfc9c [g_event]
   16     0     0     0  WL                          [swi3: vm]
   15     0     0     0  WL                          [swi4: clock sio]
   14     0     0     0  WL                          [swi1: net]
   13     0     0     0  RL      CPU 0               [idle: cpu0]
   12     0     0     0  RL      CPU 1               [idle: cpu1]
   11     0     0     0  RL      CPU 2               [idle: cpu2]
   10     0     0     0  RL      CPU 3               [idle: cpu3]
    1     0     1     0  SLs     wait     0xc52fc000 [init]
    0     0     0     0  WLs                         [swapper]
db> show sleepchain 1543
thread 100259 (pid 1543, ls) sleeping on 0xc8491280 "nfsreq"
db> show sleepchain 1525
thread 100283 (pid 1525, mksnap_ffs) blocked on lk "ufs" EXCL (count 1)
thread 100060 (pid 696, nfsd) sleeping on 0xc5686964 "suspfs"
db> call doadump
Dumping 1023 MB (2 chunks)
  chunk 0: 1MB (159 pages) ... ok
  chunk 1: 1023MB (261872 pages) 1007 991 975 959 943 927 911 895 879 863 847 831 815 799 783 767 751 735 719 703 687 671 655 639 623 607 591 575 559 543 527 511 495 479 463 447 431 415 399 383 367 351 335 319 303 287 271 255 239 223 207 191 175 159 143 127 111 95 79 63 47 31 15 ... ok

Dump complete
= 0xf
db> call print_uptime
Uptime: 4h4m21s
= 0x4
db> reset

(kgdb) proc 696
(kgdb) bt
#0  0xc06873e7 in sched_switch (td=0xc56a0900, newtd=0xc52f8780, flags=0x1) at ../../../kern/sched_4bsd.c:973
#1  0xc067c8c8 in mi_switch (flags=0x1, newtd=0x0) at ../../../kern/kern_synch.c:420
#2  0xc0694b65 in sleepq_switch (wchan=0x0) at ../../../kern/subr_sleepqueue.c:450
#3  0xc0694cae in sleepq_wait (wchan=0xc5686964) at ../../../kern/subr_sleepqueue.c:530
#4  0xc067c2f5 in msleep (ident=0xc5686964, mtx=0xc568693c, priority=0x29f, wmesg=0xc0900f86 "suspfs", timo=0x0)
    at ../../../kern/kern_synch.c:211
#5  0xc06d8ef0 in vn_start_secondary_write (vp=0xc82a1000, mpp=0xe7cb59e8, flags=0x1) at ../../../kern/vfs_vnops.c:1026
#6  0xc07c2f2f in ufs_inactive (ap=0x0) at ../../../ufs/ufs/ufs_inode.c:151
#7  0xc088ccb7 in VOP_INACTIVE_APV (vop=0xc09b0ae0, a=0xe7cb5a1c) at vnode_if.c:1535
#8  0xc06cced5 in vinactive (vp=0xc82a1000, td=0x0) at vnode_if.h:795
#9  0xc06ccae1 in vrele (vp=0xc82a1000) at ../../../kern/vfs_subr.c:2091
#10 0xc0769900 in nfsrv_readdir (nfsd=0xc615d400, slp=0xc56ae800, td=0xc56a0900, mrq=0xe7cb5c98) at ../../../nfsserver/nfs_serv.c:3618
#11 0xc076ff3d in nfssvc_nfsd (td=0x0) at ../../../nfsserver/nfs_syscalls.c:474
#12 0xc076f878 in nfssvc (td=0xc56a0900, uap=0xe7cb5d04) at ../../../nfsserver/nfs_syscalls.c:181
#13 0xc087a70f in syscall (frame=
      {tf_fs = 0x3b, tf_es = 0x3b, tf_ds = 0x3b, tf_edi = 0x1, tf_esi = 0x0, tf_ebp = 0xbfbfeb38, tf_isp = 0xe7cb5d64, tf_ebx = 0x4, tf_edx = 0x28155218, tf_ecx = 0x19, tf_eax = 0x9b, tf_trapno = 0xc, tf_err = 0x2, tf_eip = 0x280c61b7, tf_cs = 0x33, tf_eflags = 0x296, tf_esp = 0xbfbfeb1c, tf_ss = 0x3b}) at ../../../i386/i386/trap.c:983
#14 0xc086631f in Xint0x80_syscall () at ../../../i386/i386/exception.s:200
#15 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)
(kgdb) f 5
#5  0xc06d8ef0 in vn_start_secondary_write (vp=0xc82a1000, mpp=0xe7cb59e8, flags=0x1) at ../../../kern/vfs_vnops.c:1026
1026            error = msleep(&mp->mnt_flag, MNT_MTX(mp),
(kgdb) p mp
$1 = (struct mount *) 0xc56868ac
(kgdb) p *mp
$2 = {mnt_list = {tqe_next = 0xc56865c8, tqe_prev = 0xc57875c8}, mnt_op = 0xc09b0240, mnt_vfc = 0xc09b0280,
  mnt_vnodecovered = 0xc568c15c, mnt_syncer = 0xc5783414, mnt_nvnodelist = {tqh_first = 0xc577f2b8, tqh_last = 0xc80d5af4}, mnt_lock = {
    lk_interlock = 0xc09e1760, lk_flags = 0x1000000, lk_sharecount = 0x1, lk_waitcount = 0x0, lk_exclusivecount = 0x0, lk_prio = 0x50,
    lk_wmesg = 0xc08ffb9b "vfslock", lk_timo = 0x0, lk_lockholder = 0xffffffff, lk_newlock = 0x0, lk_stack = {depth = 0x5, pcs = {
        0xc066af4c, 0xc06c9dbd, 0xc07b1175, 0xc066249c, 0xc086632c, 0x0 <repeats 13 times>}}}, mnt_mtx = {mtx_object = {
      lo_class = 0xc0975d64, lo_name = 0xc08ffb8a "struct mount mtx", lo_type = 0xc08ffb8a "struct mount mtx", lo_flags = 0x30000,
      lo_list = {tqe_next = 0xc5686c20, tqe_prev = 0xc5686668}, lo_witness = 0xc09f1608}, mtx_lock = 0x4, mtx_recurse = 0x0},
  mnt_writeopcount = 0x0, mnt_flag = 0x1211300, mnt_opt = 0xc5ee13e0, mnt_optnew = 0xc5434650, mnt_kern_flag = 0x2c000000,
  mnt_maxsymlinklen = 0x78, mnt_stat = {f_version = 0x20030518, f_type = 0x3, f_flags = 0x201300, f_bsize = 0x800, f_iosize = 0x4000,
    f_blocks = 0xf20a7, f_bfree = 0xdcb4a, f_bavail = 0xc957b, f_files = 0x3f3fe, f_ffree = 0x3ed93, f_syncwrites = 0x0,
    f_asyncwrites = 0x0, f_syncreads = 0x0, f_asyncreads = 0x0, f_spare = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0},
    f_namemax = 0xff, f_owner = 0x0, f_fsid = {val = {0x434f6181, 0xa1e353a3}}, f_charspare = '\0' <repeats 79 times>,
    f_fstypename = "ufs", '\0' <repeats 12 times>, f_mntfromname = "/dev/ad0s1e", '\0' <repeats 76 times>,
    f_mntonname = "/tmp", '\0' <repeats 83 times>}, mnt_cred = 0xc5612500, mnt_data = 0xc562e200, mnt_time = 0x0,
  mnt_iosize_max = 0x20000, mnt_export = 0xc5e50000, mnt_mntlabel = 0x0, mnt_fslabel = 0x0, mnt_nvnodelistsize = 0x298,
  mnt_hashseed = 0x50b8e0f1, mnt_markercnt = 0x1, mnt_holdcnt = 0x1, mnt_holdcntwaiters = 0x0, mnt_secondary_writes = 0x0,
  mnt_secondary_accwrites = 0x38dc30, mnt_ref = 0x29a, mnt_gen = 0x1}
(kgdb) proc 1525
(kgdb) bt
#0  0xc06873e7 in sched_switch (td=0xc77b6900, newtd=0xc52f8780, flags=0x1) at ../../../kern/sched_4bsd.c:973
#1  0xc067c8c8 in mi_switch (flags=0x1, newtd=0x0) at ../../../kern/kern_synch.c:420
#2  0xc0694b65 in sleepq_switch (wchan=0x0) at ../../../kern/subr_sleepqueue.c:450
#3  0xc0694cae in sleepq_wait (wchan=0xc82a1058) at ../../../kern/subr_sleepqueue.c:530
#4  0xc067c2f5 in msleep (ident=0xc82a1058, mtx=0xc09e134c, priority=0x50, wmesg=0xc08fe122 "ufs", timo=0x0)
    at ../../../kern/kern_synch.c:211
#5  0xc066ad52 in acquire (lkpp=0xe809161c, extflags=0x40, wanted=0x60000) at ../../../kern/kern_lock.c:119
#6  0xc066b23a in lockmgr (lkp=0xc82a1058, flags=0x2002, interlkp=0x40, td=0xc77b6900) at ../../../kern/kern_lock.c:344
#7  0xc07be076 in ffs_lock (ap=0xe8091674) at ../../../ufs/ffs/ffs_vnops.c:365
#8  0xc088cebb in VOP_LOCK_APV (vop=0xc09b05a0, a=0xe8091674) at vnode_if.c:1642
#9  0xc06d89b4 in vn_lock (vp=0xc82a1000, flags=0x2002, td=0xc77b6900) at vnode_if.h:844
#10 0xc07abf7f in ffs_snapshot (mp=0xc56868ac, snapfile=0xc5ee1760 "/tmp/.snap/pho") at ../../../ufs/ffs/ffs_snapshot.c:544
#11 0xc07bad64 in ffs_mount (mp=0xc56868ac, td=0xc77b6900) at ../../../ufs/ffs/ffs_vfsops.c:312
#12 0xc06c7b87 in vfs_domount (td=0xc77b6900, fstype=0xc54ccaf0 "ufs", fspath=0xc5ee1bc0 "/tmp", fsflags=0x1211300, fsdata=0xc5434650)
    at ../../../kern/vfs_mount.c:928
#13 0xc06c735b in vfs_donmount (td=0xc77b6900, fsflags=0x1211300, fsoptions=0xe8091c04) at ../../../kern/vfs_mount.c:676
#14 0xc06c9af9 in kernel_mount (ma=0xc54cc600, flags=0x1211300) at pcpu.h:162
#15 0xc07baf39 in ffs_cmount (ma=0xc54cc600, data=0x0, flags=0x1211300, td=0xc77b6900) at ../../../ufs/ffs/ffs_vfsops.c:392
#16 0xc06c74ee in mount (td=0xc77b6900, uap=0xe8091d04) at ../../../kern/vfs_mount.c:742
#17 0xc087a70f in syscall (frame=
      {tf_fs = 0x3b, tf_es = 0x3b, tf_ds = 0x3b, tf_edi = 0x2815707c, tf_esi = 0xbfbfe450, tf_ebp = 0xbfbfeb18, tf_isp = 0xe8091d64, tf_ebx = 0xbfbfe700, tf_edx = 0x2815707c, tf_ecx = 0x0, tf_eax = 0x15, tf_trapno = 0xc, tf_err = 0x2, tf_eip = 0x280c4697, tf_cs = 0x33, tf_eflags = 0x206, tf_esp = 0xbfbfe41c, tf_ss = 0x3b}) at ../../../i386/i386/trap.c:983
#18 0xc086631f in Xint0x80_syscall () at ../../../i386/i386/exception.s:200
#19 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)(kgdb) f 9
#9  0xc06d89b4 in vn_lock (vp=0xc82a1000, flags=0x2002, td=0xc77b6900) at vnode_if.h:844
844             a.a_td = td;
(kgdb) p *vp
$7 = {v_type = VDIR, v_tag = 0xc08fe122 "ufs", v_op = 0xc09b05a0, v_data = 0xc6f5ec60, v_mount = 0xc56868ac, v_nmntvnodes = {
    tqe_next = 0xc8bf6800, tqe_prev = 0xc6964428}, v_un = {vu_mount = 0x0, vu_socket = 0x0, vu_cdev = 0x0, vu_fifoinfo = 0x0},
  v_hashlist = {le_next = 0x0, le_prev = 0xc550d210}, v_hash = 0x793, v_cache_src = {lh_first = 0x0}, v_cache_dst = {
    tqh_first = 0xc84452ec, tqh_last = 0xc84452fc}, v_dd = 0xc59d9414, v_cstart = 0x0, v_lasta = 0x0, v_lastw = 0x0, v_clen = 0x0,
  v_lock = {lk_interlock = 0xc09e134c, lk_flags = 0x2040040, lk_sharecount = 0x0, lk_waitcount = 0x1, lk_exclusivecount = 0x1,
    lk_prio = 0x50, lk_wmesg = 0xc08fe122 "ufs", lk_timo = 0x33, lk_lockholder = 0xc56a0900, lk_newlock = 0x0, lk_stack = {depth = 0xa,
      pcs = {0xc066b2d9, 0xc07be076, 0xc088cebb, 0xc06d89b4, 0xc06cca9c, 0xc0769900, 0xc076ff3d, 0xc076f878, 0xc087a70f, 0xc086631f,
        0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}}}, v_interlock = {mtx_object = {lo_class = 0xc0975d64,
      lo_name = 0xc08fa959 "vnode interlock", lo_type = 0xc08fa959 "vnode interlock", lo_flags = 0x30000, lo_list = {
        tqe_next = 0xc5872794, tqe_prev = 0xc604fe70}, lo_witness = 0xc09f2df0}, mtx_lock = 0x4, mtx_recurse = 0x0},
  v_vnlock = 0xc82a1058, v_holdcnt = 0x4, v_usecount = 0x0, v_iflag = 0x800, v_vflag = 0x0, v_writecount = 0x0, v_freelist = {
    tqe_next = 0x0, tqe_prev = 0xc5d87260}, v_bufobj = {bo_mtx = 0xc82a10c8, bo_clean = {bv_hd = {tqh_first = 0xd93fc53c,
        tqh_last = 0xd93fc574}, bv_root = 0xd93fc53c, bv_cnt = 0x1}, bo_dirty = {bv_hd = {tqh_first = 0x0, tqh_last = 0xc82a1120},
      bv_root = 0x0, bv_cnt = 0x0}, bo_numoutput = 0x0, bo_flag = 0x0, bo_ops = 0xc097ce84, bo_bsize = 0x4000, bo_object = 0xc6637b58,
    bo_synclist = {le_next = 0x0, le_prev = 0x0}, bo_private = 0xc82a1000, __bo_vnode = 0xc82a1000}, v_pollinfo = 0x0, v_label = 0x0}
(kgdb) p/d ((struct thread *)0xc56a0900)->td_proc->p_pid
$8 = 696
(kgdb) proc 1543
(kgdb) bt
#0  0xc06873e7 in sched_switch (td=0xc5707180, newtd=0xc52f8780, flags=0x1) at ../../../kern/sched_4bsd.c:973
#1  0xc067c8c8 in mi_switch (flags=0x1, newtd=0x0) at ../../../kern/kern_synch.c:420
#2  0xc0694b65 in sleepq_switch (wchan=0x0) at ../../../kern/subr_sleepqueue.c:450
#3  0xc0694cae in sleepq_wait (wchan=0xc8491280) at ../../../kern/subr_sleepqueue.c:530
#4  0xc067c2f5 in msleep (ident=0xc8491280, mtx=0xc0a37800, priority=0x53, wmesg=0xc090a589 "nfsreq", timo=0x0)
    at ../../../kern/kern_synch.c:211
#5  0xc07538c4 in nfs_reply (rep=0xc8491280) at ../../../nfsclient/nfs_socket.c:682
#6  0xc0754375 in nfs_request (vp=0xc5a6c15c, mrest=0xc7e91600, procnum=0x4, td=0xc5707180, cred=0xc52f5780, mrp=0xe7d749a4,
    mdp=0xe7d749a8, dposp=0xe7d749ac) at ../../../nfsclient/nfs_socket.c:1131
#7  0xc0758875 in nfs3_access_otw (vp=0xc5a6c15c, wmode=0xe7d749b8, td=0xc5707180, cred=0xc52f5780) at ../../../nfsclient/nfs_vnops.c:264
#8  0xc0758a37 in nfs_access (ap=0xe7d74a64) at ../../../nfsclient/nfs_vnops.c:355
#9  0xc088b6ef in VOP_ACCESS_APV (vop=0xc0986020, a=0xe7d74a64) at vnode_if.c:480
#10 0xc06d7ada in vn_open_cred (ndp=0xe7d74bcc, flagp=0xe7d74ccc, cmode=0x548, cred=0xc52f5780, fdidx=0x7) at vnode_if.h:256
#11 0xc06d7736 in vn_open (ndp=0x0, flagp=0xe7d74ccc, cmode=0x548, fdidx=0x7) at ../../../kern/vfs_vnops.c:91
#12 0xc06d0bea in kern_open (td=0xc5707180, path=0x0, pathseg=UIO_USERSPACE, flags=0x5, mode=0xbfbfe758)
    at ../../../kern/vfs_syscalls.c:1009
#13 0xc06d0afe in open (td=0xc5707180, uap=0xe7d74d04) at ../../../kern/vfs_syscalls.c:973
#14 0xc087a70f in syscall (frame=
      {tf_fs = 0x3b, tf_es = 0x3b, tf_ds = 0x3b, tf_edi = 0x8052300, tf_esi = 0xbfbfe6e0, tf_ebp = 0xbfbfe758, tf_isp = 0xe7d74d64, tf_ebx = 0x2819fd80, tf_edx = 0x0, tf_ecx = 0x2819fd80, tf_eax = 0x5, tf_trapno = 0x0, tf_err = 0x2, tf_eip = 0x281844a7, tf_cs = 0x33, tf_eflags = 0x292, tf_esp = 0xbfbfe4bc, tf_ss = 0x3b}) at ../../../i386/i386/trap.c:983
#15 0xc086631f in Xint0x80_syscall () at ../../../i386/i386/exception.s:200
#16 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)