diff options
| -rw-r--r-- | kernel/trace/ftrace.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index a89700590485..38277af44f5c 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -4226,10 +4226,13 @@ void free_ftrace_func_mapper(struct ftrace_func_mapper *mapper, struct ftrace_func_entry *entry; struct ftrace_func_map *map; struct hlist_head *hhd; - int size = 1 << mapper->hash.size_bits; - int i; + int size, i; + + if (!mapper) + return; if (free_func && mapper->hash.count) { + size = 1 << mapper->hash.size_bits; for (i = 0; i < size; i++) { hhd = &mapper->hash.buckets[i]; hlist_for_each_entry(entry, hhd, hlist) { |