umass0: BBB reset failed, TIMEOUT

[Zhouyi Zhou]

hi,
  by google, I learn this problem has been exist for a long time.
but when I am doing 
/mnt/ufs/usr#tar zcf src.tgz src
on a USB storage disk
   The system issues:
umass0: BBB reset failed, TIMEOUT
umass0: BBB bulk-in clear stall failed, TIMEOUT
umass0: BBB bulk-out clear stall failed, TIMEOUT
...
   #uname -a
FreeBSD zzy 8.0-CURRENT FreeBSD


Thanks alot
Zhouyi