netbsd-8 panic

Any ideas about what happened here?


mpt0: mpt_done: IOC task terminated!
mpt0: mpt_done: IOC has error - logging...

mpt0: unknown ctlop: 0x0
mpt0: mpt_done: IOC fatal error: restarting...
panic: iommu_dvmamap_unload: error dvmastart is zero!

cpu0: Begin traceback...
cpu0: End traceback...
Frame pointer is at 0xe0046fd1
Call traceback:
  netbsd:cpu_reboot+0x1b4(193de20, 0, ffff, 2, 1c96000, 1c9e2d0) fp = 
e0047091
  netbsd:vpanic+0x174(104, 0, 18d5f38, 1cdd000, 7, 113496140) fp = e0047141
  netbsd:panic+0x24(18d5f38, e0047b38, 1ce5000, 1ce6400, 104, 1ce62c0) fp = 
e00471f1
  netbsd:iommu_dvmamap_unload+0x98(18d5f38, 16e5d90, ff070000000001, 
1960000, 0, c134bfff) fp = e00
472b1
  netbsd:mpt_restart+0x12c(10ec93198, 111fe3018, 0, 195a000, 1121df5d8, 
10ec6aa70) fp = e0047361
  netbsd:mpt_drain_queue+0x310(111dd1320, 0, 91, 111dd1008, 15232b8a0, 
111f2c880) fp = e0047411
  netbsd:mpt_intr+0x24(111dd1008, 800000000000000, 18722a0, 1, e06d1440, 
150e50cc0) fp = e00474c1
  netbsd:intr_biglock_wrapper+0x10(111dd1008, 3de73aa50, 201c000, 
113496140, 7, 1c96800) fp = e0047
571
  netbsd:sparc_interrupt+0x294(111dcbb30, 0, e0047ed0, 3de73aa50, 1042b20, 
10ece7fc0) fp = e0047621
  netbsd:extent_alloc+0x24(0, 0, ffffdfff, 10000, 2000, 0) fp = 3de73a391

dumping to dev 7,9 offset 95
sd1(mpt0:0:1:0): command timeout
mpt0: timeout on request index = 0x8c, seq = 0x0324fe3f
mpt0: Device not running
mpt mailbox: (0x10000000) State Ready  WhoInit No One
mpt0: Status 0x00000009, Mask 0x00000001, Doorbell 0x10000000
mpt0: request state: On Chip
mpt0: soft reset failed: device not running
mpt0: soft reset failed
  16384 M - device not ready
cpu1: shutting down
cpu0: rebooting