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-rw-r--r--drivers/target/target_core_iblock.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 8a12e29..8fb3822 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -348,6 +348,18 @@ static int iblock_execute_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 = blkdev_issue_discard(ibd->ibd_bd, lba, range,
GFP_KERNEL, 0);
if (ret < 0) {
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