From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxx>
Reported-by: Douglas Gilbert <dgilbert@xxxxxxxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
---
drivers/target/target_core_xcopy.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)
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 @@ sense_reason_t target_do_xcopy(struct se_cmd *se_cmd)
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 @@ sense_reason_t target_do_xcopy(struct se_cmd *se_cmd)
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 @@ out:
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)
--
1.7.10.4
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