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| author | Alex Shi <alex.shi@linaro.org> | 2017-06-30 14:26:00 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2017-06-30 14:26:00 +0800 |
| commit | 267aa95e09eec438abf8979b58cded5cbc5586cb (patch) | |
| tree | 7401fc52691565f31c0ad96a94a7a54971cc6e6a /drivers/target/iscsi/iscsi_target.c | |
| parent | d87abdcbf8871b5ee58083b3bdf216ba406224b9 (diff) | |
| parent | 6ee496d7218aeccffe5380cb65e9d50d1a61c323 (diff) | |
Merge tag 'v4.4.75' into linux-linaro-lsk-v4.4lsk-v4.4-17.06
This is the 4.4.75 stable release
Diffstat (limited to 'drivers/target/iscsi/iscsi_target.c')
| -rw-r--r-- | drivers/target/iscsi/iscsi_target.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 200d3de8bc1e..a180c000e246 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -1112,6 +1112,18 @@ iscsit_get_immediate_data(struct iscsi_cmd *cmd, struct iscsi_scsi_req *hdr, */ if (dump_payload) goto after_immediate_data; + /* + * Check for underflow case where both EDTL and immediate data payload + * exceeds what is presented by CDB's TRANSFER LENGTH, and what has + * already been set in target_cmd_size_check() as se_cmd->data_length. + * + * For this special case, fail the command and dump the immediate data + * payload. + */ + if (cmd->first_burst_len > cmd->se_cmd.data_length) { + cmd->sense_reason = TCM_INVALID_CDB_FIELD; + goto after_immediate_data; + } immed_ret = iscsit_handle_immediate_data(cmd, hdr, cmd->first_burst_len); |