target: Make target_do_xcopy failures return INVALID_PARAMETER_LIST
This patch changes target_do_xcopy() to properly return
TCM_INVALID_PARAMETER_LIST instead of TCM_INVALID_CDB_FIELD
for failures related to the EXTENDED_COPY parameter list parsing.
Also, move struct xcopy_op allocation ahead of kmapping to
handle the special TCM_OUT_OF_RESOURCES case.
Reported-by: Thomas Glanzmann <thomas@glanzmann.de>
Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index 3da4fd1..6b9774c 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c
@@ -896,9 +896,17 @@
return TCM_UNSUPPORTED_SCSI_OPCODE;
}
+ xop = kzalloc(sizeof(struct xcopy_op), GFP_KERNEL);
+ if (!xop) {
+ pr_err("Unable to allocate xcopy_op\n");
+ return TCM_OUT_OF_RESOURCES;
+ }
+ xop->xop_se_cmd = se_cmd;
+
p = transport_kmap_data_sg(se_cmd);
if (!p) {
pr_err("transport_kmap_data_sg() failed in target_do_xcopy\n");
+ kfree(xop);
return TCM_OUT_OF_RESOURCES;
}
@@ -920,13 +928,6 @@
goto out;
}
- xop = kzalloc(sizeof(struct xcopy_op), GFP_KERNEL);
- if (!xop) {
- pr_err("Unable to allocate xcopy_op\n");
- goto out;
- }
- xop->xop_se_cmd = se_cmd;
-
pr_debug("Processing XCOPY with list_id: 0x%02x list_id_usage: 0x%02x"
" tdll: %hu sdll: %u inline_dl: %u\n", list_id, list_id_usage,
tdll, sdll, inline_dl);
@@ -957,7 +958,7 @@
if (p)
transport_kunmap_data_sg(se_cmd);
kfree(xop);
- return TCM_INVALID_CDB_FIELD;
+ return TCM_INVALID_PARAMETER_LIST;
}
static sense_reason_t target_rcr_operating_parameters(struct se_cmd *se_cmd)