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authorClément Léger <clement.leger@bootlin.com>2022-04-21 12:12:47 +0200
committerJakub Kicinski <kuba@kernel.org>2022-04-22 15:12:18 -0700
commit7f40ea2145d926510b27b785562d2c92df1b0d91 (patch)
tree1203e8603abefdd9a13e4f815c0312939fb1400d /net/bridge
parent5b0b9e4c2c895227c8852488b3f09839233bba54 (diff)
net: bridge: switchdev: check br_vlan_group() return value
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> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://lore.kernel.org/r/20220421101247.121896-1-clement.leger@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/br_switchdev.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index 8cc44c367231..18affda2b522 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -353,6 +353,8 @@ 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) {