diff options
| -rw-r--r-- | drivers/target/target_core_cdb.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/target/target_core_cdb.c b/drivers/target/target_core_cdb.c index 664f6e775d0..0a12d46dc51 100644 --- a/drivers/target/target_core_cdb.c +++ b/drivers/target/target_core_cdb.c @@ -1044,6 +1044,18 @@ int target_emulate_unmap(struct se_cmd *cmd) pr_debug("UNMAP: Using lba: %llu and range: %u\n", (unsigned long long)lba, range); + if (range > dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count) { + cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; + ret = -EINVAL; + goto err; + } + + if (lba + range > dev->transport->get_blocks(dev) + 1) { + cmd->scsi_sense_reason = TCM_ADDRESS_OUT_OF_RANGE; + ret = -EINVAL; + goto err; + } + ret = dev->transport->do_discard(dev, lba, range); if (ret < 0) { pr_err("blkdev_issue_discard() failed: %d\n", |