[PATCH] net/i40e: Populate error in flow_parse_fdir_pattern

[Mike Pattrick <mkp@redhat.com>]

Errors from i40e_flow_parse_fdir_pattern() can bubble up to
rte_flow_create. If rte_flow_error is not initialized a caller may
dereference error->message. This may be uninitialized memory, leading
to a segemntation fault.

Signed-off-by: Mike Pattrick <mkp@redhat.com>
Fixes: 4a072ad43442 ("net/i40e: fix flow director config after flow validate")
Cc: stable@dpdk.org
---
 drivers/net/i40e/i40e_flow.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c
index e0cf996200..4f3808cb5f 100644
--- a/drivers/net/i40e/i40e_flow.c
+++ b/drivers/net/i40e/i40e_flow.c
@@ -3142,8 +3142,11 @@ i40e_flow_parse_fdir_pattern(struct rte_eth_dev *dev,
 		/* Check if the input set is valid */
 		if (i40e_validate_input_set(pctype, RTE_ETH_FILTER_FDIR,
 						input_set) != 0) {
-			PMD_DRV_LOG(ERR, "Invalid input set");
-			return -EINVAL;
+			rte_flow_error_set(error, EINVAL,
+					   RTE_FLOW_ERROR_TYPE_ITEM,
+					   item,
+					   "Invalid input set");
+			return -rte_errno;
 		}
 
 		filter->input.flow_ext.input_set = input_set;
-- 
2.27.0