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-rw-r--r--kernel/bpf/syscall.c9
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)