netdev - [PATCH][xfrm-next] xfrm6: remove BUG_ON from xfrm6_dst

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Message-Id: <1542014902-11354-1-git-send-email-lirongqing@baidu.com>
Date:   Mon, 12 Nov 2018 17:28:22 +0800
From:   Li RongQing <lirongqing@...du.com>
To:     netdev@...r.kernel.org, steffen.klassert@...unet.com
Subject: [PATCH][xfrm-next] xfrm6: remove BUG_ON from xfrm6_dst_ifdown

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@...du.com>
---
 net/ipv6/xfrm6_policy.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index d35bcf92969c..769f8f78d3b8 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -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);
-- 
2.16.2