A smatch warning.
When kmem_cache_alloc() failed to alloc memory, a null pointer
will be returned. Redeference null pointer will generate
an unnecessary oops. So, use it after check.
Signed-off-by: Firo Yang <firogm@xxxxxxxxx>
---
net/ipv4/fib_trie.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 01bce15..34094c7 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -326,12 +326,13 @@ static inline void empty_child_dec(struct key_vector *n)
static struct key_vector *leaf_new(t_key key, struct fib_alias *fa)
{
struct tnode *kv = kmem_cache_alloc(trie_leaf_kmem, GFP_KERNEL);
- struct key_vector *l = kv->kv;
+ struct key_vector *l;
if (!kv)
return NULL;
/* initialize key vector */
+ l = kv->kv;
l->key = key;
l->pos = 0;
l->bits = 0;
--
2.4.2
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