Commit ec28cf73 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by David S. Miller
Browse files

fib_trie: handle empty tree 



This fixes possible problems when trie_firstleaf() returns NULL
to trie_leafindex().

Signed-off-by: default avatarStephen Hemminger <shemminger@vyatta.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e4f8b5d4

net/ipv4/fib_trie.c

+2 −4
Original line number Diff line number Diff line
@@ -1762,11 +1762,9 @@ static struct leaf *trie_leafindex(struct trie *t, int index) 
{

	struct leaf *l = trie_firstleaf(t);



	while (index-- > 0) {

	while (l && index-- > 0)

		l = trie_nextleaf(l);

		if (!l)

			break;

	}



	return l;

}