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xfrm: Fix negative device refcount on offload failure. 

Reset the offload device at the xfrm_state if the device was
not able to offload the state. Otherwise we drop the device
refcount twice.

Fixes: d77e38e612 ("xfrm: Add an IPsec hardware offloading API")
Reported-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
zero-colors
Steffen Klassert 2017-09-04 10:59:55 +02:00
parent c5d4d7d831
commit 67a63387b1
1 changed files with 1 additions and 0 deletions
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net/xfrm/xfrm_device.c
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@ -91,6 +91,7 @@ int xfrm_dev_state_add(struct net *net, struct xfrm_state *x,
}
if (!dev->xfrmdev_ops || !dev->xfrmdev_ops->xdo_dev_state_add) {
xso->dev = NULL;
dev_put(dev);
return 0;
}