Comment 10 for bug 618542

Same problem here:

[ 2.510153] 3w-9xxx: scsi2: Found a 3ware 9000 Storage Controller at 0xdfbffc00, IRQ: 106.
[ 2.870014] 3w-9xxx: scsi2: Firmware FE9X 2.08.00.009, BIOS BE9X 2.03.01.052, Ports: 12.
[ 2.871428] scsi 2:0:0:0: Direct-Access AMCC 9500S-12 DISK 2.08 PQ: 0 ANSI: 3
[ 2.891517] sd 2:0:0:0: Attached scsi generic sg3 type 0
[ 2.942124] sd 2:0:0:0: [sdb] Attached SCSI disk
[ 17.415315] 3w-9xxx: scsi2: ERROR: (0x03:0x0101): Invalid command opcode:opcode=0x85.
[ 17.436302] 3w-9xxx: scsi2: ERROR: (0x03:0x0101): Invalid command opcode:opcode=0x85.
[ 17.439719] 3w-9xxx: scsi2: ERROR: (0x03:0x0101): Invalid command opcode:opcode=0x85.

I am also getting these opcode=0x85 errors, although my system did not hang yet.