4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Max Lohrmann <post@xxxxxxxxxxxxxx> commit 13603685c1f12c67a7a2427f00b63f39a2b6f7c9 upstream. As reported by Max, the Windows 2008 R2 chkdsk utility expects VERIFY_16 to be supported, and does not handle the returned CHECK_CONDITION properly, resulting in an infinite loop. The kernel will log huge amounts of this error: kernel: TARGET_CORE[iSCSI]: Unsupported SCSI Opcode 0x8f, sending CHECK_CONDITION. Signed-off-by: Max Lohrmann <post@xxxxxxxxxxxxxx> Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/target/target_core_sbc.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -1096,9 +1096,15 @@ sbc_parse_cdb(struct se_cmd *cmd, struct return ret; break; case VERIFY: + case VERIFY_16: size = 0; - sectors = transport_get_sectors_10(cdb); - cmd->t_task_lba = transport_lba_32(cdb); + if (cdb[0] == VERIFY) { + sectors = transport_get_sectors_10(cdb); + cmd->t_task_lba = transport_lba_32(cdb); + } else { + sectors = transport_get_sectors_16(cdb); + cmd->t_task_lba = transport_lba_64(cdb); + } cmd->execute_cmd = sbc_emulate_noop; goto check_lba; case REZERO_UNIT: