lkml.org 
[lkml]   [2022]   [Apr]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH net-next] net: bridge: switchdev: check br_vlan_group() return value
Date
br_vlan_group() can return NULL and thus return value must be checked
to avoid dereferencing a NULL pointer.

Fixes: 6284c723d9b9 ("net: bridge: mst: Notify switchdev drivers of VLAN MSTI migrations")
Signed-off-by: Clément Léger <clement.leger@bootlin.com>
---
net/bridge/br_switchdev.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index 81400e0b26ac..8f3d76c751dd 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -354,6 +354,8 @@ static int br_switchdev_vlan_attr_replay(struct net_device *br_dev,
attr.orig_dev = br_dev;

vg = br_vlan_group(br);
+ if (!vg)
+ return 0;

list_for_each_entry(v, &vg->vlan_list, vlist) {
if (v->msti) {
--
2.34.1
\
 
 \ /
  Last update: 2022-04-21 12:15    [W:0.046 / U:0.068 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site