Reproducible panic in -CURRENT

Hello,

Whenver I do a 'make -j8 buildworld' I get this panic on todays  
-CURRENT.

I dumped, newfsed and restored the /usr filesystem and got the exact  
same panic during restore, so it's not filesystem corruption from  
earlier crashes.

This is a SMP system.


ad4: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=67200479
ad4: FAILURE - WRITE_DMA timed out
g_vfs_done():ad4s1f[WRITE(offset=16958308352, length=16384)]error = 5
panic: initiate_write_inodeblock_ufs2: already started
cpuid = 0
boot() called on cpu#0
Uptime: 18m7s

telnet> send brk
KDB: enter: Line break on console
[thread 100128]
Stopped at      kdb_enter+0x2c: leave
db> trace
kdb_enter(c0844393,0,c5841c00,c5611800,c53f9490) at kdb_enter+0x2c
siointr1(c5614740,c5453b80,ed6a4948,c07b96e9,c5611800) at siointr1+0x3be
siointr(c5611800,c5841c00,4,c76c7114,c5841c00) at siointr+0x4f
intr_execute_handlers(c53f9490,ed6a4964,4,ed6a49b4,c07b61f3) at  
intr_execute_handlers+0xad
lapic_handle_intr(34) at lapic_handle_intr+0x23
Xapic_isr1() at Xapic_isr1+0x33
--- interrupt, eip = 0xc05ef7e2, esp = 0xed6a49a8, ebp = 0xed6a49b4 ---
cv_wait(c76c7138,c76c7114,c76c7114,c5564800,ed6a49ec) at cv_wait+0x16
_sema_wait(c76c7114,0,0) at _sema_wait+0x3b
ata_queue_request(c76c70cc,0,3d00,c5564800,0) at ata_queue_request+0x1a9
ata_controlcmd(c55648ac,e7,0,0,0,0) at ata_controlcmd+0x7a
ata_shutdown(0,104,c54bd08c,c5453d0c,ed6a4a74) at ata_shutdown+0xa5
boot(104,c5841c00,c581b800,d9659ba8,200200a4) at boot+0x23e
panic(c083e414,18d50000,c08e0000,c5841d50,0) at panic+0x174
softdep_disk_io_initiation(d9659ba8,d9659ba8,c5885d24,ed6a4c2c,c07561da) 
  at softdep_disk_io_initiation+0x1081
softdep_disk_prewrite(d9659ba8,20020024,d9659ba8,ed6a4c48,c065f0bd) at  
softdep_disk_prewrite+0x64
ffs_geom_strategy(c5885d24,d9659ba8,4000,4,d9659ba8) at  
ffs_geom_strategy+0x2a
bufwrite(d9659ba8,c5841c00,ed6a4c7c,c06099ce,100500) at bufwrite+0x1a9
vfs_bio_awrite(d9659ba8,64,0,c5885cf0,c5885d24) at vfs_bio_awrite+0x4b
vop_stdfsync(ed6a4ce0,1f3,4198c550,1,0) at vop_stdfsync+0x231
sched_sync(0,ed6a4d48,0,c066a410,0) at sched_sync+0x397
fork_exit(c066a410,0,ed6a4d48) at fork_exit+0x58
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xed6a4d7c, ebp = 0 ---
db>


Mvh,
Frode Nordahl