diff options
| author | Xin Long <lucien.xin@gmail.com> | 2022-02-22 23:54:57 -0500 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-02-23 15:21:13 -0800 |
| commit | 6a47cdc38143f7b62af2768181462597da04df0f (patch) | |
| tree | ccd6f275ff78014f69f7217f47797173c868c3c6 | |
| parent | 167053f8dd0ed60287858448696b4784d7e1d899 (diff) | |
Revert "vlan: move dev_put into vlan_dev_uninit"
This reverts commit d6ff94afd90b0ce8d1715f8ef77d4347d7a7f2c0.
Since commit faab39f63c1f ("net: allow out-of-order netdev unregistration")
fixed the issue in a better way, this patch is to revert the previous fix,
as it might bring back the old problem fixed by commit 563bcbae3ba2 ("net:
vlan: fix a UAF in vlan_dev_real_dev()").
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/563c0a6e48510ccbff9ef4715de37209695e9fc4.1645592097.git.lucien.xin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/8021q/vlan_dev.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index d1902828a18a..e5d23e75572a 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -638,12 +638,7 @@ void vlan_dev_free_egress_priority(const struct net_device *dev) static void vlan_dev_uninit(struct net_device *dev) { - struct vlan_dev_priv *vlan = vlan_dev_priv(dev); - vlan_dev_free_egress_priority(dev); - - /* Get rid of the vlan's reference to real_dev */ - dev_put_track(vlan->real_dev, &vlan->dev_tracker); } static netdev_features_t vlan_dev_fix_features(struct net_device *dev, @@ -856,6 +851,9 @@ static void vlan_dev_free(struct net_device *dev) free_percpu(vlan->vlan_pcpu_stats); vlan->vlan_pcpu_stats = NULL; + + /* Get rid of the vlan's reference to real_dev */ + dev_put_track(vlan->real_dev, &vlan->dev_tracker); } void vlan_setup(struct net_device *dev) |