From: Jakub Kicinski kuba@kernel.org
[ Upstream commit 55b7ab1178cbf41f979ff83236d3321ad35ed2ad ]
VLAN checks for NETREG_UNINITIALIZED to distinguish between registration failure and unregistration in progress.
Since commit cb626bf566eb ("net-sysfs: Fix reference count leak") registration failure may, however, result in NETREG_UNREGISTERED as well as NETREG_UNINITIALIZED.
This fix is similer to cebb69754f37 ("rtnetlink: Fix memory(net_device) leak when ->newlink fails")
Fixes: cb626bf566eb ("net-sysfs: Fix reference count leak") Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/8021q/vlan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index 5e99504539559..512ada90657b2 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -277,7 +277,8 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id) return 0;
out_free_newdev: - if (new_dev->reg_state == NETREG_UNINITIALIZED) + if (new_dev->reg_state == NETREG_UNINITIALIZED || + new_dev->reg_state == NETREG_UNREGISTERED) free_netdev(new_dev); return err; }