[RFC 4/7] net/bnxt: fix use after free

[Stephen Hemminger <stephen@networkplumber.org>]

The filter cleanup loop was using STAILQ_FOREACH and rte_free
and would dereference the filter after free.

Found by build with -Dbsanitize=address,undefined

Fixes: e8fe0e067b68 ("net/bnxt: fix allocation of PF info struct")
Cc: ajit.khaparde@broadcom.com
Cc: stable@dpdk.org

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/net/bnxt/bnxt_filter.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_filter.c b/drivers/net/bnxt/bnxt_filter.c
index 7b90ba651f..f083f3aa94 100644
--- a/drivers/net/bnxt/bnxt_filter.c
+++ b/drivers/net/bnxt/bnxt_filter.c
@@ -3,14 +3,12 @@
  * All rights reserved.
  */
 
-#include <sys/queue.h>
-
 #include <rte_byteorder.h>
 #include <rte_log.h>
 #include <rte_malloc.h>
 #include <rte_flow.h>
 #include <rte_flow_driver.h>
-#include <rte_tailq.h>
+#include <rte_queue.h>
 
 #include "bnxt.h"
 #include "bnxt_filter.h"
@@ -151,7 +149,9 @@ void bnxt_free_filter_mem(struct bnxt *bp)
 	bp->filter_info = NULL;
 
 	for (i = 0; i < bp->pf->max_vfs; i++) {
-		STAILQ_FOREACH(filter, &bp->pf->vf_info[i].filter, next) {
+		struct bnxt_filter_info *tmp;
+
+		STAILQ_FOREACH_SAFE(filter, &bp->pf->vf_info[i].filter, next, tmp) {
 			rte_free(filter);
 			STAILQ_REMOVE(&bp->pf->vf_info[i].filter, filter,
 				      bnxt_filter_info, next);
-- 
2.45.2