[dpdk-stable] [PATCH] lib: add warning for NULL pointer

[Qiming Yang]

May return NULL when manage tries for packet in acl library. So
this patch added warning for the NULL pointer return.

Fixes: 074f54ad03ee ("acl: fix build and runtime for default target")
Cc: stable at dpdk.org

Signed-off-by: Qiming Yang <qiming.yang at intel.com>
---
 lib/librte_acl/acl_run.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/librte_acl/acl_run.h b/lib/librte_acl/acl_run.h
index bf7842d..6c718c0 100644
--- a/lib/librte_acl/acl_run.h
+++ b/lib/librte_acl/acl_run.h
@@ -143,6 +143,9 @@ acl_start_next_trie(struct acl_flow_data *flows, struct parms *parms, int n,
 				flows->num_packets * flows->categories);
 		}
 
+		if (flows->last_cmplt == NULL)
+			RTE_LOG(WARNING, MALLOC, "packet tries allocate failed");
+
 		/* set completion parameters and starting index for this slot */
 		parms[n].cmplt = flows->last_cmplt;
 		transition =
-- 
2.9.5