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Message-ID: <20170508073934.28529-2-ilant@mellanox.com> Date: Mon, 8 May 2017 10:39:34 +0300 From: <ilant@...lanox.com> To: David Miller <davem@...emloft.net>, Steffen Klassert <steffen.klassert@...unet.com> CC: Boris Pismenny <borisp@...lanox.com>, <netdev@...r.kernel.org>, Ilan Tayari <ilant@...lanox.com> Subject: [PATCH net v2 1/1] xfrm: Fix NETDEV_DOWN with IPSec offload From: Ilan Tayari <ilant@...lanox.com> Upon NETDEV_DOWN event, all xfrm_state objects which are bound to the device are flushed. The condition for this is wrong, though, testing dev->hw_features instead of dev->features. If a device has non-user-modifiable NETIF_F_HW_ESP, then its xfrm_state objects are not flushed, causing a crash later on after the device is deleted. Check dev->features instead of dev->hw_features. Fixes: d77e38e612a0 ("xfrm: Add an IPsec hardware offloading API") Signed-off-by: Ilan Tayari <ilant@...lanox.com> Acked-by: Steffen Klassert <steffen.klassert@...unet.com> --- net/xfrm/xfrm_device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c index 8ec8a3fcf8d4..574e6f32f94f 100644 --- a/net/xfrm/xfrm_device.c +++ b/net/xfrm/xfrm_device.c @@ -170,7 +170,7 @@ static int xfrm_dev_feat_change(struct net_device *dev) static int xfrm_dev_down(struct net_device *dev) { - if (dev->hw_features & NETIF_F_HW_ESP) + if (dev->features & NETIF_F_HW_ESP) xfrm_dev_state_flush(dev_net(dev), dev, true); xfrm_garbage_collect(dev_net(dev)); -- 2.11.0
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