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pppoe: drop PPPOX_ZOMBIEs in pppoe_release

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When PPPOE is running over a virtual ethernet interface (e.g., a
bonding interface) and the user tries to delete the interface in case
the PPPOE state is ZOMBIE, the kernel will loop forever while
unregistering net_device for the reference count is not decreased to
zero which should have been done with dev_put().

Signed-off-by: Xiaodong Xu <stid.smth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xiaodong Xu 2012-09-22 00:09:32 +00:00 committed by David S. Miller
parent 0b121fd28d
commit 2b018d57ff
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ppp/pppoe.c
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@ -570,7 +570,7 @@ static int pppoe_release(struct socket *sock)
po = pppox_sk(sk);
if (sk->sk_state & (PPPOX_CONNECTED | PPPOX_BOUND)) {
if (sk->sk_state & (PPPOX_CONNECTED | PPPOX_BOUND | PPPOX_ZOMBIE)) {
dev_put(po->pppoe_dev);
po->pppoe_dev = NULL;
}