[PATCH 4.4 04/16] vlan: fix a use-after-free in vlan_device_event()

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Cong Wang [ Upstream commit 052d41c01b3a2e3371d66de569717353af489d63 ] After refcnt reaches zero, vlan_vid_del() could free dev->vlan_info via RCU:

[PATCH 4.4 04/16] vlan: fix a use-after-free in vlan_device_event()

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Cong Wang [ Upstream commit 052d41c01b3a2e3371d66de569717353af489d63 ] After refcnt reaches zero, vlan_vid_del() could free dev->vlan_info via RCU: RCU_INIT_POINTER(dev->vlan_info,