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xfrm6: remove BUG_ON from xfrm6_dst_ifdown

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if loopback_idev is NULL pointer, and the following access of
loopback_idev will trigger panic, which is same as BUG_ON

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Li RongQing 2018-11-12 17:28:22 +08:00 • committed by Steffen Klassert
parent 39aa6928d4
commit 3fcccec008
1 changed files with 0 additions and 1 deletions
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1
net/ipv6/xfrm6_policy.c
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@ -262,7 +262,6 @@ static void xfrm6_dst_ifdown(struct dst_entry *dst, struct net_device *dev,
if (xdst->u.rt6.rt6i_idev->dev == dev) {
struct inet6_dev *loopback_idev =
in6_dev_get(dev_net(dev)->loopback_dev);
BUG_ON(!loopback_idev);
do {
in6_dev_put(xdst->u.rt6.rt6i_idev);