| Date | Mon, 08 Oct 2012 00:00:08 +0100 | From | Ben Hutchings <> | Subject | [ 094/108] pppoe: drop PPPOX_ZOMBIEs in pppoe_release |
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3.2-stable review patch. If anyone has any objections, please let me know.
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From: Xiaodong Xu <stid.smth@gmail.com>
[ Upstream commit 2b018d57ff18e5405823e5cb59651a5b4d946d7b ]
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> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/net/ppp/pppoe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c index bc9a4bb..1161584 100644 --- a/drivers/net/ppp/pppoe.c +++ b/drivers/net/ppp/pppoe.c @@ -576,7 +576,7 @@ 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; }
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