target: fix use-after-free with PSCSI sense data
The pointer to the sense buffer is fetched by transport_get_sense_data,
but this is called by target_complete_ok_work long after pscsi_req_done
has freed the struct that contains it.
Pass instead the fabric's sense buffer to transport_complete,
and copy the data to it directly in transport_complete. Setting
SCF_TRANSPORT_TASK_SENSE also becomes a duty of transport_complete.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h
index f1405d33..941c84bf 100644
--- a/include/target/target_core_backend.h
+++ b/include/target/target_core_backend.h
@@ -23,7 +23,9 @@
struct se_device *(*create_virtdevice)(struct se_hba *,
struct se_subsystem_dev *, void *);
void (*free_device)(void *);
- int (*transport_complete)(struct se_cmd *cmd, struct scatterlist *);
+ void (*transport_complete)(struct se_cmd *cmd,
+ struct scatterlist *,
+ unsigned char *);
int (*parse_cdb)(struct se_cmd *cmd);
ssize_t (*check_configfs_dev_params)(struct se_hba *,