diff options
Diffstat (limited to 'net/ipv4/fib_trie.c')
| -rw-r--r-- | net/ipv4/fib_trie.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index e320b32373e5..8aa31fe514ee 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -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 @@ rescan: 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; |