Nothing about the route lookup requires bottom half to be disabled.
Remove the local_bh_disable ... local_bh_enable around ip_route_input.
This appears to be a vestige of days gone by as it has been there
since the beginning of git time.

Signed-off-by: David Ahern <d...@cumulusnetworks.com>
---
 net/ipv4/route.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index f51823dc998b..7144288371cf 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2631,9 +2631,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, 
struct nlmsghdr *nlh)
                skb->protocol   = htons(ETH_P_IP);
                skb->dev        = dev;
                skb->mark       = mark;
-               local_bh_disable();
                err = ip_route_input(skb, dst, src, rtm->rtm_tos, dev);
-               local_bh_enable();
 
                rt = skb_rtable(skb);
                if (err == 0 && rt->dst.error)
-- 
2.1.4

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