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ipv4: Remove leftover rcu_read_unlock calls from __mkroute_output() 

Commit "fib: RCU conversion of fib_lookup()" removed rcu_read_lock() from
__mkroute_output but left a couple of calls to rcu_read_unlock() in there.
This causes lockdep to complain that the rcu_read_unlock() call in
__ip_route_output_key causes a lock inbalance and quickly crashes the
kernel. The below fixes this for me.

Signed-off-by: Dimitris Michailidis <dm@chelsio.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Dimitris Michailidis 2010-10-07 14:48:38 +00:00 committed by David S. Miller
parent 993284dfff
commit 8391d07b80
1 changed files with 2 additions and 4 deletions
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6
net/ipv4/route.c
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@ -2396,12 +2396,10 @@ static int __mkroute_output(struct rtable **result,
rth = dst_alloc(&ipv4_dst_ops);
if (!rth) {
rcu_read_unlock();
if (!rth)
return -ENOBUFS;
}
in_dev_hold(in_dev);
rcu_read_unlock();
rth->idev = in_dev;
atomic_set(&rth->dst.__refcnt, 1);