GENERIC RELENG_6 from Feb 10 20:39 UTC, vmcore.496
Test as NFS client.

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 6.1-PRERELEASE #5: Sat Feb 11 13:35:05 CET 2006
    pho@crashbox.osted.lan:/usr/src/sys/i386/compile/PHO
WARNING: WITNESS option enabled, expect reduced performance.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Celeron(R) CPU 1.80GHz (1799.15-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0xf13  Stepping = 3
  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>
real memory  = 267583488 (255 MB)
avail memory = 252178432 (240 MB)
:
Trying to mount root from ufs:/dev/ad0s1a
WARNING: / was not properly dismounted
WARNING: /tmp was not properly dismounted
/tmp: mount pending error: blocks 3052 files 881
WARNING: /usr was not properly dismounted
WARNING: /var was not properly dismounted
rl0: link state changed to DOWN
panic: VOP_STRATEGY failed bp=0xc723f6b0 vp=0
cpuid = 0
KDB: enter: panic
[thread pid 54 tid 100059 ]
Stopped at      kdb_enter+0x2b: nop
db> where
Tracing pid 54 tid 100059 td 0xc22be780
kdb_enter(c086cb94) at kdb_enter+0x2b
panic(c0874c41,c723f6b0,0,c091bfe0,c3426990) at panic+0x14b
bufstrategy(c3426a50,c723f6b0) at bufstrategy+0x6d
nfs_writebp(c723f6b0,1,c22be780,cc9c6ae4,c0682fbd) at nfs_writebp+0x10a
nfs_bwrite(c723f6b0) at nfs_bwrite+0x14
bawrite(c723f6b0,c3426a0c,c11ba1a8,c3426a0c,c3426a0c) at bawrite+0x51
cluster_wbuild(c3426990,2000,10,0,8) at cluster_wbuild+0x63c
vfs_bio_awrite(c7277f40,c0984800,0,c0874221,83a) at vfs_bio_awrite+0x1c5
flushbufqueues(0) at flushbufqueues+0x39d
buf_daemon(0,cc9c6d38,0,c068487c,0) at buf_daemon+0xa3
fork_exit(c068487c,0,cc9c6d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcc9c6d6c, ebp = 0 ---
db> show alllocks
Process 38220 (swap) thread 0xc36e1d80 (100159)
exclusive sx user map r = 0 (0xc345729c) locked @ vm/vm_fault.c:803
Process 38212 (udp) thread 0xc35e0000 (100150)
exclusive sleep mutex inp (udpinp) r = 0 (0xc24656e4) locked @ netinet/udp_usrreq.c:976
Process 38211 (swap) thread 0xc293d300 (100139)
exclusive sx user map r = 0 (0xc35c6ad0) locked @ vm/vm_fault.c:803
Process 54 (bufdaemon) thread 0xc22be780 (100059)
exclusive sleep mutex Giant r = 0 (0xc0936580) locked @ nfsclient/nfs_socket.c:1055
db> show lockedvnods
Locked vnodes

0xc3426990: tag nfs, type VREG
    usecount 1, writecount 1, refcount 37 mountedhere 0
    flags ()
    v_object 0xc2fad108 ref 0 pages 70
     lock type nfs: EXCL (count 1) by thread 0xc22be780 (pid 54)
        fileid 235636 fsid 0x200ff02
db> allt

Tracing command nfsiod 19 pid 38240 tid 100165 td 0xc251fc00
sched_switch(c251fc00,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c54c,1,c251fc00,cf36fcdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c54c,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c54c,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098beec,cf36fd38,c098beec,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098beec,cf36fd38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf36fd6c, ebp = 0 ---

Tracing command nfsiod 18 pid 38239 tid 100122 td 0xc35b0180
sched_switch(c35b0180,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c548,1,c35b0180,cf3fbcdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c548,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c548,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098bee8,cf3fbd38,c098bee8,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098bee8,cf3fbd38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf3fbd6c, ebp = 0 ---

Tracing command nfsiod 17 pid 38238 tid 100128 td 0xc36e1600
sched_switch(c36e1600,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c544,1,c36e1600,cf50fcdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c544,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c544,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098bee4,cf50fd38,c098bee4,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098bee4,cf50fd38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf50fd6c, ebp = 0 ---

Tracing command nfsiod 16 pid 38237 tid 100136 td 0xc36e2d80
sched_switch(c36e2d80,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c540,1,c36e2d80,cf53ccdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c540,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c540,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098bee0,cf53cd38,c098bee0,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098bee0,cf53cd38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf53cd6c, ebp = 0 ---

Tracing command nfsiod 15 pid 38236 tid 100135 td 0xc2f10300
sched_switch(c2f10300,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c53c,1,c2f10300,cf3b3cdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c53c,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c53c,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098bedc,cf3b3d38,c098bedc,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098bedc,cf3b3d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf3b3d6c, ebp = 0 ---

Tracing command nfsiod 14 pid 38235 tid 100175 td 0xc35e0a80
sched_switch(c35e0a80,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c538,1,c35e0a80,cf47ccdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c538,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c538,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098bed8,cf47cd38,c098bed8,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098bed8,cf47cd38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf47cd6c, ebp = 0 ---

Tracing command nfsiod 13 pid 38234 tid 100123 td 0xc35af780
sched_switch(c35af780,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c534,1,c35af780,cf3e9cdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c534,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c534,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098bed4,cf3e9d38,c098bed4,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098bed4,cf3e9d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf3e9d6c, ebp = 0 ---

Tracing command nfsiod 12 pid 38233 tid 100094 td 0xc29ff480
sched_switch(c29ff480,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c530,1,c29ff480,cf6d8cdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c530,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c530,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098bed0,cf6d8d38,c098bed0,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098bed0,cf6d8d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf6d8d6c, ebp = 0 ---

Tracing command nfsiod 11 pid 38232 tid 100157 td 0xc36e1000
sched_switch(c36e1000,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c52c,1,c36e1000,cf503cdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c52c,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c52c,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098becc,cf503d38,c098becc,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098becc,cf503d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf503d6c, ebp = 0 ---

Tracing command nfsiod 10 pid 38231 tid 100185 td 0xc23b1600
sched_switch(c23b1600,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c528,1,c23b1600,cf4d6cdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c528,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c528,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098bec8,cf4d6d38,c098bec8,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098bec8,cf4d6d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf4d6d6c, ebp = 0 ---

Tracing command nfsiod 9 pid 38230 tid 100190 td 0xc26e7d80
sched_switch(c26e7d80,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c524,1,c26e7d80,cf5a0cdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c524,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c524,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098bec4,cf5a0d38,c098bec4,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098bec4,cf5a0d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf5a0d6c, ebp = 0 ---

Tracing command nfsiod 8 pid 38229 tid 100131 td 0xc2996c00
sched_switch(c2996c00,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
turnstile_wait(c0936580,c22be780,c0936580,2,c086bebe,225) at turnstile_wait+0x2fe
_mtx_lock_sleep(c0936580,c2996c00,0,c086d37b,ec) at _mtx_lock_sleep+0x146
_mtx_lock_flags(c0936580,0,c086d37b,ec) at _mtx_lock_flags+0x85
msleep(c2e2e480,c098be40,53,c087f79c,0) at msleep+0x386
nfs_reply(c2e2e480,0,f,0,29a) at nfs_reply+0x1ec
nfs_request(c3426990,c2b43b00,15,0,c24d0400) at nfs_request+0x37d
nfs_commit(c3426990,20000,0,10000,c24d0400,0) at nfs_commit+0xd4
nfs_doio(c3426990,c723e378,c24d0400,0) at nfs_doio+0x2e3
nfssvc_iod(c098bec0,cf5d9d38,c098bec0,c0717df4,0) at nfssvc_iod+0x194
fork_exit(c0717df4,c098bec0,cf5d9d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf5d9d6c, ebp = 0 ---

Tracing command nfsiod 7 pid 38228 tid 100112 td 0xc36e2300
sched_switch(c36e2300,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c098c51c,1,c36e2300,cf527cdc,c0644295) at sleepq_switch+0xe0
sleepq_timedwait_sig(c098c51c,0,0,100,0) at sleepq_timedwait_sig+0xd
msleep(c098c51c,0,15c,c0866271,1d4c0) at msleep+0x2d5
nfssvc_iod(c098bebc,cf527d38,c098bebc,c0717df4,0) at nfssvc_iod+0xa2
fork_exit(c0717df4,c098bebc,cf527d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf527d6c, ebp = 0 ---

Tracing command nfsiod 6 pid 38227 tid 100119 td 0xc23b1a80
sched_switch(c23b1a80,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
turnstile_wait(c0936580,c22be780,c0936580,2,c086bebe,225) at turnstile_wait+0x2fe
_mtx_lock_sleep(c0936580,c23b1a80,0,c086d37b,ec) at _mtx_lock_sleep+0x146
_mtx_lock_flags(c0936580,0,c086d37b,ec) at _mtx_lock_flags+0x85
msleep(c2e2e400,c098be40,53,c087f79c,0) at msleep+0x386
nfs_reply(c2e2e400,0,f,0,29a) at nfs_reply+0x1ec
nfs_request(c39e8990,c29f8400,7,0,c24d0400) at nfs_request+0x37d
nfs_writerpc(c39e8990,cf4dfcb4,c24d0400,cf4dfca4,cf4dfca8) at nfs_writerpc+0x256
nfs_doio(c39e8990,c723aef0,c24d0400,0) at nfs_doio+0x3f4
nfssvc_iod(c098beb8,cf4dfd38,c098beb8,c0717df4,0) at nfssvc_iod+0x194
fork_exit(c0717df4,c098beb8,cf4dfd38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf4dfd6c, ebp = 0 ---

Tracing command nfsiod 5 pid 38226 tid 100102 td 0xc2711180
sched_switch(c2711180,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c2c12a00,cf5e2b98,c06442d1,c2c12a00,0) at sleepq_switch+0xe0
sleepq_wait(c2c12a00,0,0,c087f734,248) at sleepq_wait+0x30
msleep(c2c12a00,c098be40,53,c087f79c,0) at msleep+0x311
nfs_reply(c2c12a00,0,f,0,29a) at nfs_reply+0x1ec
nfs_request(c30aa330,c2b63800,7,0,c24d0400) at nfs_request+0x37d
nfs_writerpc(c30aa330,cf5e2cb4,c24d0400,cf5e2ca4,cf5e2ca8) at nfs_writerpc+0x256
nfs_doio(c30aa330,c723a9d0,c24d0400,0) at nfs_doio+0x3f4
nfssvc_iod(c098beb4,cf5e2d38,c098beb4,c0717df4,0) at nfssvc_iod+0x194
fork_exit(c0717df4,c098beb4,cf5e2d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf5e2d6c, ebp = 0 ---

Tracing command nfsiod 4 pid 38225 tid 100124 td 0xc2711900
sched_switch(c2711900,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c2982000,cf5f1b98,c06442d1,c2982000,0) at sleepq_switch+0xe0
sleepq_wait(c2982000,0,0,c087f734,248) at sleepq_wait+0x30
msleep(c2982000,c098be40,53,c087f79c,0) at msleep+0x311
nfs_reply(c2982000,0,f,0,29a) at nfs_reply+0x1ec
nfs_request(c30aa330,c35f5300,7,0,c24d0400) at nfs_request+0x37d
nfs_writerpc(c30aa330,cf5f1cb4,c24d0400,cf5f1ca4,cf5f1ca8) at nfs_writerpc+0x256
nfs_doio(c30aa330,c723e4c0,c24d0400,0) at nfs_doio+0x3f4
nfssvc_iod(c098beb0,cf5f1d38,c098beb0,c0717df4,0) at nfssvc_iod+0x194
fork_exit(c0717df4,c098beb0,cf5f1d38) at fork_exit+0xa0
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcf5f1d6c, ebp = 0 ---

Tracing command tcp pid 38224 tid 100093 td 0xc35af000
sched_switch(c35af000,0,2) at sched_switch+0x177
mi_switch(2,0,c0936540,0,c086e39c) at mi_switch+0x270
critical_exit(c0936540,cf3dab0c,c0636a2d,c220fd80,cf3dab38) at critical_exit+0x8b
spinlock_exit(c220fd80,cf3dab38,c065edfd,c0936540,0) at spinlock_exit+0x10
_mtx_unlock_spin_flags(c0936540,0,c086fee8,331,0) at _mtx_unlock_spin_flags+0x8d
turnstile_unpend(c21e97c0,c24d2630,2ed,cf3dab70,c06368d3) at turnstile_unpend+0x2cd
_mtx_unlock_sleep(c24d2630,0,c087c3fa,2ed) at _mtx_unlock_sleep+0x66
_mtx_unlock_flags(c24d2630,0,c087c3fa,2ed) at _mtx_unlock_flags+0x9b
tcp_usr_send(c2888b20,0,c3d6b700,0,0) at tcp_usr_send+0x326
sosend(c2888b20,0,cf3dacbc,c3d6b700,0) at sosend+0x5e3
soo_write(c24e7288,cf3dacbc,c24d0400,0,c35af000) at soo_write+0x46
dofilewrite(c35af000,3,c24e7288,cf3dacbc,ffffffff) at dofilewrite+0x77
kern_writev(c35af000,3,cf3dacbc,804ec00,0) at kern_writev+0x3b
write(c35af000,cf3dad04,3,2,296) at write+0x45
syscall(805003b,bfbf003b,bfbf003b,bfbfea18,bfbfea10) at syscall+0x22f
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (4, FreeBSD ELF32, write), eip = 0x280cbbeb, esp = 0xbfbfe88c, ebp = 0xbfbfe8d8 ---

Tracing command tcp pid 38223 tid 100099 td 0xc293dc00
sched_switch(c293dc00,0,2) at sched_switch+0x177
mi_switch(2,0,c293dc00,b6,c0936540,0,c086fe57,fd) at mi_switch+0x270
ast(cf4bbd38) at ast+0x2dd
doreti_ast() at doreti_ast+0x17

Tracing command swap pid 38222 tid 100153 td 0xc2986c00
sched_switch(c2986c00,0,2) at sched_switch+0x177
mi_switch(2,0,c2986c00,b4,c0936540,0,c086fe57,fd) at mi_switch+0x270
ast(cf561d38) at ast+0x2dd
doreti_ast() at doreti_ast+0x17

Tracing command swap pid 38221 tid 100109 td 0xc36e0300
sched_switch(c36e0300,c21bd600,6) at sched_switch+0x177
mi_switch(6,c21bd600,c21bd754,c21bd600,cf4ebcb8) at mi_switch+0x270
maybe_preempt(c21bd600) at maybe_preempt+0x165
sched_add(c21bd600,4,c21eb280,c21bd600,c21eca3c) at sched_add+0x15a
setrunqueue(c21bd600,4) at setrunqueue+0xab
ithread_schedule(c21eb280,16,c36e0300,1,bfbfea0c) at ithread_schedule+0xb3
intr_execute_handlers(c21ab240,cf4ebd34,16,bfbfe8d8,c07ef9a3) at intr_execute_handlers+0xe5
lapic_handle_intr(46) at lapic_handle_intr+0x2e
Xapic_isr2() at Xapic_isr2+0x33
--- interrupt, eip = 0x8049112, esp = 0xbfbfe8c0, ebp = 0xbfbfe8d8 ---

Tracing command swap pid 38220 tid 100159 td 0xc36e1d80
sched_switch(c36e1d80,0,2) at sched_switch+0x177
mi_switch(2,0,c0936540,0,c086e39c) at mi_switch+0x270
critical_exit(c08707b9,cf51eb3c,c07efb80,0,cf510008) at critical_exit+0x8b
lapic_handle_timer(0) at lapic_handle_timer+0xc9
Xtimerint(c0888a5f,c08707b8,3) at Xtimerint+0x30
fixup_filename(c0888a5f,cf51eb78,c0660204,c0887bc5,c0947250) at fixup_filename+0x24
witness_checkorder(c27b7e70,9,c0888a5f,1c6) at witness_checkorder+0x72
_mtx_lock_flags(c27b7e70,0,c0888a5f,1c6) at _mtx_lock_flags+0x5b
vm_object_deallocate(c27b7e70) at vm_object_deallocate+0x72
unlock_and_deallocate(cf51ec50,c0992600,0,c0887bbc,39b,c127d610) at unlock_and_deallocate+0xa8
vm_fault(c3457258,9e90000,2,8,c36e1d80) at vm_fault+0x1171
trap_pfault(cf51ed38,1,9e90000,9e90000,0) at trap_pfault+0xee
trap(3b,3b,3b,bfbfea14,bfbfea0c) at trap+0x1ff
calltrap() at calltrap+0x5
--- trap 0xc, eip = 0x804910c, esp = 0xbfbfe8c0, ebp = 0xbfbfe8d8 ---

Tracing command swap pid 38219 tid 100100 td 0xc35e0180
sched_switch(c35e0180,0,2) at sched_switch+0x177
mi_switch(2,0,c35e0180,b5,c0936540,0,c086fe57,fd) at mi_switch+0x270
ast(cf46ad38) at ast+0x2dd
doreti_ast() at doreti_ast+0x17

Tracing command tcp pid 38218 tid 100126 td 0xc35b0300
sched_switch(c35b0300,0,2) at sched_switch+0x177
mi_switch(2,0,c0936540,0,c086e39c) at mi_switch+0x270
critical_exit(c35b0300,cf3febec,c07efb80,0,c35b0008) at critical_exit+0x8b
lapic_handle_timer(0) at lapic_handle_timer+0xc9
Xtimerint(c0983ba8,cf3fec14,c0661851,c093d9e0,0) at Xtimerint+0x30
_mtx_unlock_spin_flags(c093d9e0,0,c0870612,6a7,c36ac62c) at _mtx_unlock_spin_flags+0x8d
witness_lock_list_get(c0947980,c36ac62c,7c8,c08696c1,cf3fec50) at witness_lock_list_get+0x8d
witness_lock(c36ac62c,8,c08696ca,7c8,c36ac600) at witness_lock+0xae
_mtx_lock_flags(c36ac62c,0,c08696c1,7c8) at _mtx_lock_flags+0x97
fget_read(c35b0300,4,cf3fec90,0,0) at fget_read+0x27f
kern_readv(c35b0300,4,cf3fecbc,8050000,40) at kern_readv+0x1a
read(c35b0300,cf3fed04,3,8a,292) at read+0x45
syscall(bfbf003b,bfbf003b,bfbf003b,bfbfea18,bfbfea10) at syscall+0x22f
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (3, FreeBSD ELF32, read), eip = 0x280cbc0b, esp = 0xbfbfe87c, ebp = 0xbfbfe8d8 ---

Tracing command tcp pid 38217 tid 100132 td 0xc36e1a80
sched_switch(c36e1a80,0,1) at sched_switch+0x177
mi_switch(1,0) at mi_switch+0x270
sleepq_switch(c26a8e90,0,cf518ba4,c06442c2,c26a8e90) at sleepq_switch+0xe0
sleepq_wait_sig(c26a8e90,0,100,c0873536,3fa) at sleepq_wait_sig+0xc
msleep(c26a8e90,c26a8e5c,158,c08737bc,0) at msleep+0x302
sbwait(c26a8e38,cf518c0c,c06618a0,400,0) at sbwait+0x4b
soreceive(c26a8de8,0,cf518cbc,0,0) at soreceive+0x2da
soo_read(c24e7af8,cf518cbc,c24d0400,0,c36e1a80) at soo_read+0x41
dofileread(c36e1a80,4,c24e7af8,cf518cbc,ffffffff) at dofileread+0x85
kern_readv(c36e1a80,4,cf518cbc,804e400,400) at kern_readv+0x36
read(c36e1a80,cf518d04,3,1,292) at read+0x45
syscall(3b,3b,3b,bfbfea18,bfbfea10) at syscall+0x22f
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (3, FreeBSD ELF32, read), eip = 0x280cbc0b, esp = 0xbfbfe87c, ebp = 0xbfbfe8d8 ---

Tracing command tcp pid 38216 tid 100114 td 0xc36e0480
db> ps
  pid   proc     uid  ppid  pgrp  flag   stat  wmesg    wchan  cmd
38240 c2f0fc48    0     0     0 0000204 [SLPQ - 0xc098c54c][SLP] nfsiod 19
38239 c277c418    0     0     0 0000204 [SLPQ - 0xc098c548][SLP] nfsiod 18
38238 c35d3a3c    0     0     0 0000204 [SLPQ - 0xc098c544][SLP] nfsiod 17
38237 c2939624    0     0     0 0000204 [SLPQ - 0xc098c540][SLP] nfsiod 16
38236 c35ad000    0     0     0 0000204 [SLPQ - 0xc098c53c][SLP] nfsiod 15
38235 c2939a3c    0     0     0 0000204 [SLPQ - 0xc098c538][SLP] nfsiod 14
38234 c251c418    0     0     0 0000204 [SLPQ - 0xc098c534][SLP] nfsiod 13
38233 c35ad418    0     0     0 0000204 [SLPQ - 0xc098c530][SLP] nfsiod 12
38232 c277d000    0     0     0 0000204 [SLPQ - 0xc098c52c][SLP] nfsiod 11
38231 c277cc48    0     0     0 0000204 [RUNQ] nfsiod 10
38230 c2931c48    0     0     0 0000204 [RUNQ] nfsiod 9
38229 c2f11a3c    0     0     0 0000204 [LOCK  Giant c24a25c0] nfsiod 8
38228 c35b120c    0     0     0 0000204 [RUNQ] nfsiod 7
38227 c2f1120c    0     0     0 0000204 [LOCK  Giant c24a25c0] nfsiod 6
38226 c35ada3c    0     0     0 0000204 [SLPQ nfsreq 0xc2c12a00][SLP] nfsiod 5
38225 c277d418    0     0     0 0000204 [SLPQ nfsreq 0xc2982000][SLP] nfsiod 4
38224 c35d3624 1001 38217 38185 0000002 [RUNQ] tcp
38223 c277c20c 1001 38218 38185 0000002 [RUNQ] tcp
38222 c293120c 1001 38198 38185 0000002 [RUNQ] swap
38221 c277d624 1001 38198 38185 0000002 [RUNQ] swap
38220 c2f11418 1001 38198 38185 0000002 [RUNQ] swap
38219 c35b1624 1001 38198 38185 0000002 [RUNQ] swap
38218 c293ca3c 1001 38216 38185 0000002 [RUNQ] tcp
38217 c35b1830 1001 38216 38185 0000002 [SLPQ sbwait 0xc26a8e90][SLP] tcp
38216 c35d3000 1001 38196 38185 0000002 [SLPQ wait 0xc35d3000][SLP][SWAP] tcp
38215 c35b1c48 1001 38205 38185 0000002 [RUNQ] udp
38214 c2931418 1001 38205 38185 0000002 [RUNQ] udp
38213 c277d20c 1001 38205 38185 0000002 [RUNQ] udp
38212 c277da3c 1001 38205 38185 0000002 [RUNQ] udp
38211 c293cc48 1001 38198 38185 0000002 [RUNQ] swap
38210 c293c000 1001 38197 38185 0000002 [RUNQ] rw
38209 c2939c48 1001 38197 38185 0000002 [RUNQ] rw
38208 c251c830 1001 38197 38185 0000002 [RUNQ] rw
38207 c35b1418 1001 38197 38185 0000002 [RUNQ] rw
38206 c35ad20c 1001 38197 38185 0000002 [RUNQ] rw
38205 c2f0fa3c 1001 38195 38185 0000002 [SLPQ wait 0xc2f0fa3c][SLP][SWAP] udp
38204 c35ad624 1001 38198 38185 0000002 [RUNQ] swap
38203 c35d4000 1001 38198 38185 0000002 [RUNQ] swap
38202 c242fa3c 1001 38197 38185 0000002 [RUNQ] rw
38201 c277dc48 1001 38197 38185 0000002 [RUNQ] rw
38200 c35b1a3c 1001 38197 38185 0000002 [RUNQ] rw
38199 c277ca3c 1001 38197 38185 0000002 [RUNQ] rw
38198 c2931000 1001 38191 38185 0000002 [SLPQ wait 0xc2931000][SLP][SWAP] swap
38197 c2939830 1001 38190 38185 0000002 [SLPQ wait 0xc2939830][SLP][SWAP] rw
38196 c2f11830 1001 38189 38185 0004002 [SLPQ nanslp 0xc0936e6c][SLP] tcp
38195 c293c830 1001 38189 38185 0004002 [SLPQ nanslp 0xc0936e6c][SLP] udp
38191 c251c20c 1001 38189 38185 0004002 [SLPQ nanslp 0xc0936e6c][SLP] swap
38190 c35adc48 1001 38189 38185 0004002 [SLPQ nanslp 0xc0936e6c][SLP] rw
38189 c277c000 1001 38188 38185 0000002 [SLPQ wait 0xc277c000][SLP][SWAP] run
38188 c251b000 1001 38187 38185 0000002 [SLPQ wait 0xc251b000][SLP][SWAP] run
38187 c2f0f000 1001 38185 38185 0004002 [SLPQ nanslp 0xc0936e6c][SLP] run
38185 c277d830 1001   642 38185 0004002 [SLPQ wait 0xc277d830][SLP][SWAP] sh
  642 c251b830 1001   641   642 0004002 [SLPQ wait 0xc251b830][SLP][SWAP] bash
  641 c2516418 1001   639   639 0000100 [SLPQ select 0xc0984184][SLP][SWAP] sshd
  639 c22bd418    0   479   639 0004100 [SLPQ sbwait 0xc24e6bc8][SLP][SWAP] sshd
  616 c251b418    0     1   616 0004002 [SLPQ ttyin 0xc2356810][SLP][SWAP] getty
  615 c2516624    0     1   615 0004002 [SLPQ ttyin 0xc2356c10][SLP][SWAP] getty
  614 c2516000    0     1   614 0004002 [SLPQ ttyin 0xc2357010][SLP][SWAP] getty
  613 c251b20c    0     1   613 0004002 [SLPQ ttyin 0xc2357410][SLP][SWAP] getty
  612 c2516830    0     1   612 0004002 [SLPQ ttyin 0xc234b410][SLP][SWAP] getty
  611 c242c830    0     1   611 0004002 [SLPQ ttyin 0xc2342c10][SLP][SWAP] getty
  610 c251c000    0     1   610 0004002 [SLPQ ttyin 0xc234ac10][SLP][SWAP] getty
  609 c251bc48    0     1   609 0004002 [SLPQ ttyin 0xc234b810][SLP][SWAP] getty
  594 c2516c48    0     1   594 0000000 [SLPQ select 0xc0984184][SLP][SWAP] inetd
  568 c2516a3c    0     1   568 0000000 [SLPQ select 0xc0984184][SLP][SWAP] moused
  500 c251620c    0     1   500 0000000 [SLPQ nanslp 0xc0936e6c][SLP][SWAP] cron
  491 c251b624   25     1   491 0000100 [SLPQ pause 0xc251b658][SLP][SWAP] sendmail
  485 c242c20c    0     1   485 0000100 [SLPQ select 0xc0984184][SLP] sendmail
  479 c22bd20c    0     1   479 0000100 [SLPQ select 0xc0984184][SLP][SWAP] sshd
  459 c242c000    0     1   459 0000000 [SLPQ select 0xc0984184][SLP] ntpd
  433 c242c418    0     1   433 0000000 [SLPQ select 0xc0984184][SLP][SWAP] usbd
  403 c242f20c    0   399   399 0000000 [SLPQ - 0xc24d8000][SLP][SWAP] nfsd
  402 c242ca3c    0   399   399 0000000 [SLPQ - 0xc24d8200][SLP][SWAP] nfsd
  401 c242f830    0   399   399 0000000 [SLPQ - 0xc24d8400][SLP][SWAP] nfsd
  400 c242f624    0   399   399 0000000 [SLPQ - 0xc24d8600][SLP][SWAP] nfsd
  399 c242f000    0     1   399 0000000 [SLPQ select 0xc0984184][SLP][SWAP] nfsd
  397 c242cc48    0     1   397 0000000 [SLPQ select 0xc0984184][SLP][SWAP] mountd
  335 c242f418    0     1   335 0000000 [SLPQ select 0xc0984184][SLP][SWAP] rpcbind
  317 c242c624    0     1   317 0000000 [SLPQ select 0xc0984184][SLP][SWAP] syslogd
  282 c242fc48    0     1   282 0000000 [SLPQ select 0xc0984184][SLP][SWAP] devd
   61 c22bd624    0     0     0 0000204 [SLPQ - 0xcc9dbd04][SLP] schedcpu
   60 c22bd830    0     0     0 0000204 [RUNQ] nfsiod 3
   59 c22bda3c    0     0     0 0000204 [RUNQ] nfsiod 2
   58 c22bdc48    0     0     0 0000204 [SLPQ nfsreq 0xc2c17a00][SLP] nfsiod 1
   57 c23db000    0     0     0 0000204 [RUNQ] nfsiod 0
   56 c23db20c    0     0     0 0000204 [SLPQ vlruwt 0xc23db20c][SLP] vnlru
   55 c23db418    0     0     0 0000204 [SLPQ syncer 0xc0936be0][SLP] syncer
   54 c23db624    0     0     0 0000204 [CPU 0] bufdaemon
   53 c23db830    0     0     0 000020c [RUNQ] pagezero
   52 c23dba3c    0     0     0 0000204 [SLPQ psleep 0xc0992674][SLP] vmdaemon
   51 c23dbc48    0     0     0 0000204 [SLPQ psleep 0xc0992630][SLP] pagedaemon
   50 c220e624    0     0     0 0000204 [SLPQ - 0xc22fe83c][SLP] fdc0
   49 c220e830    0     0     0 0000204 [IWAIT] swi0: sio
   48 c220ea3c    0     0     0 0000204 [SLPQ usbevt 0xc22ac210][SLP] usb4
   47 c220ec48    0     0     0 0000204 [SLPQ usbevt 0xc22f3210][SLP] usb3
   46 c22bc000    0     0     0 0000204 [SLPQ usbevt 0xc22f4210][SLP] usb2
   45 c22bc20c    0     0     0 0000204 [SLPQ usbevt 0xc22de210][SLP] usb1
   44 c22bc418    0     0     0 0000204 [SLPQ usbtsk 0xc0933ae4][SLP] usbtask
   43 c22bc624    0     0     0 0000204 [SLPQ usbevt 0xc22ae210][SLP] usb0
   42 c22bc830    0     0     0 0000204 [IWAIT] swi5:+
    9 c22bca3c    0     0     0 0000204 [SLPQ - 0xc2214480][SLP] thread taskq
    8 c22bcc48    0     0     0 0000204 [SLPQ - 0xc2214500][SLP] acpi_task2
    7 c22bd000    0     0     0 0000204 [SLPQ - 0xc2214500][SLP] acpi_task1
    6 c2200c48    0     0     0 0000204 [SLPQ - 0xc2214500][SLP] acpi_task0
   41 c220c000    0     0     0 0000204 [IWAIT] swi6:+
   40 c220c20c    0     0     0 0000204 [IWAIT] swi6: task queue
   39 c220c418    0     0     0 0000204 [IWAIT] swi2: cambio
    5 c220c624    0     0     0 0000204 [SLPQ - 0xc2214900][SLP] kqueue taskq
   38 c220c830    0     0     0 0000204 [SLPQ - 0xc0931800][SLP] yarrow
    4 c220ca3c    0     0     0 0000204 [SLPQ - 0xc0934328][SLP] g_down
    3 c220cc48    0     0     0 0000204 [SLPQ - 0xc0934324][SLP] g_up
    2 c220e000    0     0     0 0000204 [SLPQ - 0xc093431c][SLP] g_event
   37 c220e20c    0     0     0 0000204 [IWAIT] swi1: net
   36 c220e418    0     0     0 0000204 [IWAIT] swi3: vm
   35 c21ec624    0     0     0 000020c [RUNQ] swi4: clock sio
   34 c21ec830    0     0     0 0000204 [IWAIT] irq23: ehci0
   33 c21eca3c    0     0     0 0000204 [RUNQ] irq22: rl0
   32 c21ecc48    0     0     0 0000204 [IWAIT] irq21:
   31 c2200000    0     0     0 0000204 [IWAIT] irq20:
   30 c220020c    0     0     0 0000204 [IWAIT] irq19: uhci1
   29 c2200418    0     0     0 0000204 [IWAIT] irq18: uhci2
   28 c2200624    0     0     0 0000204 [IWAIT] irq17: pcm0
   27 c2200830    0     0     0 0000204 [IWAIT] irq16: uhci0 uhci3
   26 c2200a3c    0     0     0 0000204 [IWAIT] irq15: ata1
   25 c21c020c    0     0     0 0000204 [IWAIT] irq14: ata0
   24 c21c0418    0     0     0 0000204 [IWAIT] irq13:
   23 c21c0624    0     0     0 0000204 [IWAIT] irq12: psm0
   22 c21c0830    0     0     0 0000204 [IWAIT] irq11:
   21 c21c0a3c    0     0     0 0000204 [IWAIT] irq10:
   20 c21c0c48    0     0     0 0000204 [IWAIT] irq9: acpi0
   19 c21ec000    0     0     0 0000204 [IWAIT] irq8:
   18 c21ec20c    0     0     0 0000204 [IWAIT] irq7: ppc0
   17 c21ec418    0     0     0 0000204 [IWAIT] irq6: fdc0
   16 c21bb000    0     0     0 0000204 [IWAIT] irq5:
   15 c21bb20c    0     0     0 0000204 [IWAIT] irq4: sio0
   14 c21bb418    0     0     0 0000204 [IWAIT] irq3:
   13 c21bb624    0     0     0 0000204 [IWAIT] irq0:
   12 c21bb830    0     0     0 0000204 [IWAIT] irq1: atkbd0
   11 c21bba3c    0     0     0 000020c [Can run] idle: cpu0
    1 c21bbc48    0     0     1 0004200 [SLPQ wait 0xc21bbc48][SLP] init
   10 c21c0000    0     0     0 0000204 [SLPQ ktrace 0xc0934d98][SLP] ktrace
    0 c0934420    0     0     0 0000200 [IWAIT] swapper
38193 c251c624 1001 38189 38185 0006002 zomb[INACTIVE] mkdir
38192 c2f0f20c 1001 38189 38185 0006002 zomb[INACTIVE] creat
38194 c35d3418 1001 38189 38185 0006002 zomb[INACTIVE] thr1
db> call doadump
Dumping 254 MB (2 chunks)
  chunk 0: 1MB (159 pages) ... ok
  chunk 1: 255MB (65072 pages) 239 223 207 191 175 159 143 127 111 95 79 63 47 31 15 ... ok

Dump complete
= 0xf
db> reset

(kgdb) bt
#0  doadump () at pcpu.h:165
#1  0xc046a2df in db_fncall (dummy1=0xc09b00e0, dummy2=0x0, dummy3=0x0,
    dummy4=0xcc9c68dc "\bi\2344G~h\234h\234\220\a")
    at ../../../ddb/db_command.c:492
#2  0xc046a0e4 in db_command (last_cmdp=0xc091d344, cmd_table=0x0,
    aux_cmd_tablep=0xc0898ac0, aux_cmd_tablep_end=0xc0898adc)
    at ../../../ddb/db_command.c:350
#3  0xc046a1ac in db_command_loop () at ../../../ddb/db_command.c:458
#4  0xc046bda1 in db_trap (type=0x3, code=0x0) at ../../../ddb/db_main.c:228
#5  0xc0656b6e in kdb_trap (type=0x3, code=0x0, tf=0xcc9c6a20)
    at ../../../kern/subr_kdb.c:473
#6  0xc0801d24 in trap (frame=
      {tf_fs = 0xcc9c0008, tf_es = 0xc0650028, tf_ds = 0xc0860028, tf_edi = 0xc0874c41, tf_esi = 0x1, tf_ebp = 0xcc9c6a60, tf_isp = 0xcc9c6a4c, tf_ebx = 0xcc9c6a8c, tf_edx = 0x0, tf_ecx = 0xc1033000, tf_eax = 0x12, tf_trapno = 0x3, tf_err = 0x0, tf_eip = 0xc0656853, tf_cs = 0x20, tf_eflags = 0x296, tf_esp = 0xcc9c6a80, tf_ss = 0xc063e9f7})
    at ../../../i386/i386/trap.c:593
#7  0xc07ef59a in calltrap () at ../../../i386/i386/exception.s:139
#8  0xc0656853 in kdb_enter (msg=0x12 <Address 0x12 out of bounds>) at cpufunc.h:60
#9  0xc063e9f7 in panic (fmt=0xc0874c41 "VOP_STRATEGY failed bp=%p vp=%p")
    at ../../../kern/kern_shutdown.c:549
#10 0xc0687461 in bufstrategy (bo=0x12, bp=0xc723f6b0) at ../../../kern/vfs_bio.c:3692
#11 0xc071f7c6 in nfs_writebp (bp=0xc723f6b0, force=0x1, td=0xc22be780) at buf.h:415
#12 0xc071fa64 in nfs_bwrite (bp=0xc723f6b0) at pcpu.h:162
#13 0xc0682fbd in bawrite (bp=0x12) at buf.h:401
#14 0xc068a1f8 in cluster_wbuild (vp=0xc3426990, size=0x2000, start_lbn=Unhandled dwarf expression opcode 0x93
)
    at ../../../kern/vfs_cluster.c:948
#15 0xc06840cd in vfs_bio_awrite (bp=0xc7277f40) at ../../../kern/vfs_bio.c:1595
#16 0xc0684d6d in flushbufqueues (flushdeps=0x0) at ../../../kern/vfs_bio.c:2109
#17 0xc068491f in buf_daemon () at ../../../kern/vfs_bio.c:1983
#18 0xc062af80 in fork_exit (callout=0xc068487c <buf_daemon>, arg=0x0, frame=0xcc9c6d38)
    at ../../../kern/kern_fork.c:789
#19 0xc07ef5fc in fork_trampoline () at ../../../i386/i386/exception.s:208
(kgdb) f 17
#17 0xc068491f in buf_daemon () at ../../../kern/vfs_bio.c:1983
1983                            if (flushbufqueues(0) == 0) {
(kgdb) info loc
No locals.
(kgdb) down
#16 0xc0684d6d in flushbufqueues (flushdeps=0x0) at ../../../kern/vfs_bio.c:2109
2109                            vfs_bio_awrite(bp);
(kgdb) info loc
td = (struct thread *) 0xc22be780
sentinel = {b_bufobj = 0xc21eb280, b_bcount = 0xcc9c6bc8, b_caller1 = 0xc07f3411,
  b_data = 0xc21eb280 "D1\2159\2069\206", b_error = 0x16, b_iocmd = 0x80,
  b_ioflags = 0xe7, b_iooffset = 0xc22be780c22be780, b_resid = 0xc2877800,
  b_iodone = 0xcc9c6bdc, b_blkno = 0xc21ab240c07f59d6, b_offset = 0x16cc9c6be4,
  b_bobufs = {tqe_next = 0xcc9c6c2c, tqe_prev = 0xc07ef9a3}, b_left = 0x46,
  b_right = 0xc23d0008, b_vflags = 0xc22b0028, b_freelist = {tqe_next = 0xc72b6e50,
    tqe_prev = 0xc72eef7c}, b_qindex = 0xe780, b_flags = 0xcc9c6c2c, b_xflags = 0x14,
  b_lock = {lk_interlock = 0xc22be780, lk_flags = 0xc22be780, lk_sharecount = 0x2,
    lk_waitcount = 0xc22be780, lk_exclusivecount = 0x4700, lk_prio = 0xc098,
    lk_wmesg = 0x9 <Address 0x9 out of bounds>, lk_timo = 0xcc9c6c38,
    lk_lockholder = 0xc064fcef, lk_newlock = 0xc0936540}, b_bufsize = 0x2,
  b_runningbufspace = 0xc22be780, b_kvabase = 0xc23db68c "D1\215\211\206\211\206",
  b_kvasize = 0x9, b_lblkno = 0xc064fcefcc9c6c54, b_vp = 0xc0936540, b_dirtyoff = 0x2,
  b_dirtyend = 0xc086e39c, b_rcred = 0x267, b_wcred = 0xc22be780,
  b_saveaddr = 0xcc9c6c60, b_pager = {pg_reqpage = 0x246}, b_cluster = {cluster_head = {
      tqh_first = 0xc093d9e0, tqh_last = 0xcc9c6c6c}, cluster_entry = {
      tqe_next = 0xc093d9e0, tqe_prev = 0xcc9c6c6c}}, b_pages = {0xc0636a2d,
    0xc0983f64, 0xcc9c6cac, 0xc086a765, 0xcc9c6c8c, 0xc0660204, 0xc086a765, 0xc08707b8,
    0x3, 0xc22be780, 0xcc9c6cac, 0xc0660c11, 0x246, 0x246, 0xc08d3144, 0xc23db68c,
    0xbb, 0xc086a75c, 0xcc9c6cd0, 0xc06368a8, 0xc23db68c, 0x1, 0xc086bebe, 0x138,
    0xc068487c, 0xc23db624, 0x0, 0xcc9c6cf0, 0xc062f3ae, 0xc23db68c, 0x0, 0xc086a75c},
  b_npages = 0xbb, b_dep = {lh_first = 0xc068487c}}
vp = (struct vnode *) 0xc3426990
mp = (struct mount *) 0xc2874400
bp = (struct buf *) 0xc7277f40
hasdeps = 0x0
flushed = 0x1f
target = 0x5a
(kgdb) down
#15 0xc06840cd in vfs_bio_awrite (bp=0xc7277f40) at ../../../kern/vfs_bio.c:1595
1595                            nwritten = cluster_wbuild(vp, size, lblkno - j, ncl);
(kgdb) info loc
i = 0x10
j = 0x0
lblkno = 0x10
vp = (struct vnode *) 0xc3426990
ncl = 0x10
nwritten = 0x10
size = 0x2000
maxcl = 0x10
(kgdb) p *vp
$5 = {v_type = VREG, v_tag = 0xc087fde4 "nfs", v_op = 0xc08e2fa0, v_data = 0xc3bb3ac8,
  v_mount = 0xc2874400, v_nmntvnodes = {tqe_next = 0xc33a8bb0, tqe_prev = 0xc3577894},
  v_un = {vu_mount = 0x0, vu_socket = 0x0, vu_cdev = 0x0, vu_fifoinfo = 0x0},
  v_hashlist = {le_next = 0xc249faa0, le_prev = 0xc23676b0}, v_hash = 0x3ed025fd,
  v_cache_src = {lh_first = 0x0}, v_cache_dst = {tqh_first = 0xc3a7e6e8,
    tqh_last = 0xc3a7e6f8}, v_dd = 0x0, v_cstart = 0x0, v_lasta = 0x0, v_lastw = 0x0,
  v_clen = 0x0, v_lock = {lk_interlock = 0xc0935960, lk_flags = 0x40080,
    lk_sharecount = 0x0, lk_waitcount = 0x0, lk_exclusivecount = 0x1, lk_prio = 0x50,
    lk_wmesg = 0xc087fde4 "nfs", lk_timo = 0x33, lk_lockholder = 0xc22be780,
    lk_newlock = 0x0}, v_interlock = {mtx_object = {lo_class = 0xc08d3144,
      lo_name = 0xc0870533 "vnode interlock", lo_type = 0xc0870533 "vnode interlock",
      lo_flags = 0x30000, lo_list = {tqe_next = 0xc2781aa8, tqe_prev = 0xc357790c},
      lo_witness = 0xc0947430}, mtx_lock = 0x4, mtx_recurse = 0x0},
  v_vnlock = 0xc34269e8, v_holdcnt = 0x25, v_usecount = 0x1, v_iflag = 0x0,
  v_vflag = 0x0, v_writecount = 0x1, v_freelist = {tqe_next = 0x0, tqe_prev = 0x0},
  v_bufobj = {bo_mtx = 0xc3426a0c, bo_clean = {bv_hd = {tqh_first = 0xc72cdb78,
        tqh_last = 0xc72a0ba0}, bv_root = 0xc72a0b68, bv_cnt = 0x18}, bo_dirty = {
      bv_hd = {tqh_first = 0xc7280338, tqh_last = 0xc72e24f8}, bv_root = 0xc72686b0,
      bv_cnt = 0xb}, bo_numoutput = 0x9, bo_flag = 0x1, bo_ops = 0xc08e328c,
    bo_bsize = 0x2000, bo_object = 0xc2fad108, bo_synclist = {le_next = 0xc3577940,
      le_prev = 0xc2313b94}, bo_private = 0xc3426990, __bo_vnode = 0xc3426990},
  v_pollinfo = 0x0, v_label = 0x0}
(kgdb) down
#14 0xc068a1f8 in cluster_wbuild (vp=0xc3426990, size=0x2000, start_lbn=Unhandled dwarf expression opcode 0x93
)
    at ../../../kern/vfs_cluster.c:948
948                     bawrite(bp);
(kgdb) info loc
bp = (struct buf *) 0xc723f6b0
tbp = (struct buf *) 0xc72686b0
i = 0x8
j = 0x2
totalwritten = 0x20000
dbsize = 0x10
(kgdb) down
#13 0xc0682fbd in bawrite (bp=0x12) at buf.h:401
401             KASSERT(bp->b_bufobj->bo_ops->bop_write != NULL,
(kgdb) info loc
No locals.
(kgdb) down
#12 0xc071fa64 in nfs_bwrite (bp=0xc723f6b0) at pcpu.h:162
162     {
(kgdb) info loc
No locals.
(kgdb) down
#11 0xc071f7c6 in nfs_writebp (bp=0xc723f6b0, force=0x1, td=0xc22be780) at buf.h:415
415             BO_STRATEGY(bp->b_bufobj, bp);
(kgdb) info loc
oldflags = 0x64000006
(kgdb) down
#10 0xc0687461 in bufstrategy (bo=0x12, bp=0xc723f6b0) at ../../../kern/vfs_bio.c:3692
3692            KASSERT(i == 0, ("VOP_STRATEGY failed bp=%p vp=%p", bp, bp->b_vp));
(kgdb) info loc
i = 0x12
vp = (struct vnode *) 0x0

(kgdb) p *(struct buf *)0xc723f6b0
$1 = {b_bufobj = 0x0, b_bcount = 0x10000, b_caller1 = 0x0,
  b_data = 0xcb47c000 <Address 0xcb47c000 out of bounds>, b_error = 0xd, b_iocmd = 0x2,
  b_ioflags = 0x1, b_iooffset = 0x30000, b_resid = 0x10000, b_iodone = 0,
  b_blkno = 0x180, b_offset = 0x30000, b_bobufs = {tqe_next = 0x0, tqe_prev = 0x0},
  b_left = 0x0, b_right = 0x0, b_vflags = 0x0, b_freelist = {tqe_next = 0xc723c890,
    tqe_prev = 0xc0992b0c}, b_qindex = 0x0, b_flags = 0x60000024, b_xflags = 0x0,
  b_lock = {lk_interlock = 0xc0935ac8, lk_flags = 0x0, lk_sharecount = 0x0,
    lk_waitcount = 0x0, lk_exclusivecount = 0x0, lk_prio = 0x50,
    lk_wmesg = 0xc0874219 "bufwait", lk_timo = 0x0, lk_lockholder = 0xffffffff,
    lk_newlock = 0x0}, b_bufsize = 0x10000, b_runningbufspace = 0x0,
  b_kvabase = 0xcb47c000 <Address 0xcb47c000 out of bounds>, b_kvasize = 0x10000,
  b_lblkno = 0x18, b_vp = 0x0, b_dirtyoff = 0x0, b_dirtyend = 0x0, b_rcred = 0x0,
  b_wcred = 0x0, b_saveaddr = 0xcb47c000, b_pager = {pg_reqpage = 0x0}, b_cluster = {
    cluster_head = {tqh_first = 0xc7280338, tqh_last = 0xc7268768}, cluster_entry = {
      tqe_next = 0xc7280338, tqe_prev = 0xc7268768}}, b_pages = {0xc129a470,
    0xc13d30b8, 0xc11a9480, 0xc127cc80, 0xc12cfc90, 0xc1352dd8, 0xc12ac620, 0xc137ad68,
    0xc12da8b0, 0xc12e65f8, 0xc1375d40, 0xc13e5388, 0xc14aced0, 0xc142b018, 0xc126ea60,
    0xc11ba1a8, 0xc11e9710, 0xc144ce58, 0xc13d51a0, 0xc13c79e8, 0xc11f7030, 0xc14a4278,
    0xc121c2c0, 0xc1168308, 0xc10ac550, 0xc1378698, 0xc11c62e0, 0xc1260e28, 0xc1352c70,
    0xc14870b8, 0xc11b4d00, 0xc131df48}, b_npages = 0x10, b_dep = {lh_first = 0x0}}