[dpdk-dev] [PATCH] net/ice: fix illegal pointer access when removing mac filter

[Wenwu Ma]

When removing the mac filter in ice_remove_all_mac_vlan_filters(),
TAILQ_FOREACH_SAFE should be used instead of TAILQ_FOREACH,
Otherwise, it will result in a illegal pointer access.

Fixes: e0dcf94a0d7f ("net/ice: support VLAN ops")
Cc: sta...@dpdk.org

Signed-off-by: Wenwu Ma <wenwux...@intel.com>
---
 drivers/net/ice/ice_ethdev.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 9c9b84a93..785750d9b 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -10,6 +10,8 @@
 #include <sys/stat.h>
 #include <unistd.h>
 
+#include <rte_tailq.h>
+
 #include "base/ice_sched.h"
 #include "base/ice_flow.h"
 #include "base/ice_dcb.h"
@@ -1094,12 +1096,13 @@ ice_remove_all_mac_vlan_filters(struct ice_vsi *vsi)
 {
        struct ice_mac_filter *m_f;
        struct ice_vlan_filter *v_f;
+       void *temp;
        int ret = 0;
 
        if (!vsi || !vsi->mac_num)
                return -EINVAL;
 
-       TAILQ_FOREACH(m_f, &vsi->mac_list, next) {
+       TAILQ_FOREACH_SAFE(m_f, &vsi->mac_list, next, temp) {
                ret = ice_remove_mac_filter(vsi, &m_f->mac_info.mac_addr);
                if (ret != ICE_SUCCESS) {
                        ret = -EINVAL;
@@ -1110,7 +1113,7 @@ ice_remove_all_mac_vlan_filters(struct ice_vsi *vsi)
        if (vsi->vlan_num == 0)
                return 0;
 
-       TAILQ_FOREACH(v_f, &vsi->vlan_list, next) {
+       TAILQ_FOREACH_SAFE(v_f, &vsi->vlan_list, next, temp) {
                ret = ice_remove_vlan_filter(vsi, &v_f->vlan_info.vlan);
                if (ret != ICE_SUCCESS) {
                        ret = -EINVAL;
-- 
2.25.1