diff options
Diffstat (limited to 'kernel/bpf/syscall.c')
-rw-r--r-- | kernel/bpf/syscall.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 5742df21598c..4f416234251f 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c | |||
@@ -719,10 +719,15 @@ static int map_lookup_elem(union bpf_attr *attr) | |||
719 | } else { | 719 | } else { |
720 | rcu_read_lock(); | 720 | rcu_read_lock(); |
721 | ptr = map->ops->map_lookup_elem(map, key); | 721 | ptr = map->ops->map_lookup_elem(map, key); |
722 | if (ptr) | 722 | if (IS_ERR(ptr)) { |
723 | err = PTR_ERR(ptr); | ||
724 | } else if (!ptr) { | ||
725 | err = -ENOENT; | ||
726 | } else { | ||
727 | err = 0; | ||
723 | memcpy(value, ptr, value_size); | 728 | memcpy(value, ptr, value_size); |
729 | } | ||
724 | rcu_read_unlock(); | 730 | rcu_read_unlock(); |
725 | err = ptr ? 0 : -ENOENT; | ||
726 | } | 731 | } |
727 | 732 | ||
728 | if (err) | 733 | if (err) |