diff --git a/lib/radix-tree.c b/lib/radix-tree.c index a9e41aed6de4bfb063af9d16d41942a041a23fdd..cc6096b97afbb7be8611b9369411172fca2a1d94 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -120,7 +120,7 @@ bool is_sibling_entry(const struct radix_tree_node *parent, void *node) static inline unsigned long get_slot_offset(const struct radix_tree_node *parent, void __rcu **slot) { - return slot - parent->slots; + return parent ? slot - parent->slots : 0; } static unsigned int radix_tree_descend(const struct radix_tree_node *parent,