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Commit 5ddf0eb2 authored by Robert Olsson's avatar Robert Olsson Committed by David S. Miller
Browse files

[IPV4]: fib_trie initialzation fix 



In some kernel configs /proc functions seems to be accessed before the
trie is initialized. The patch below checks for this.

Signed-off-by: default avatarRobert Olsson <robert.olsson@its.uu.se>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4f81c32b

net/ipv4/fib_trie.c

+10 −2
Original line number Diff line number Diff line
@@ -50,7 +50,7 @@ 
 *		Patrick McHardy <kaber@trash.net>

 */



#define VERSION "0.404"

#define VERSION "0.405"



#include <linux/config.h>

#include <asm/uaccess.h>
@@ -2040,7 +2040,15 @@ static struct node *fib_trie_get_next(struct fib_trie_iter *iter) 
static struct node *fib_trie_get_first(struct fib_trie_iter *iter,

				       struct trie *t)

{

	struct node *n = rcu_dereference(t->trie);

	struct node *n ;



	if(!t)

		return NULL;



	n = rcu_dereference(t->trie);



	if(!iter)

		return NULL;



	if (n && IS_TNODE(n)) {

		iter->tnode = (struct tnode *) n;