bpf: add support for bpf_spin_lock to cgroup local storage

Allow 'struct bpf_spin_lock' to reside inside cgroup local storage.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index ebf0a673cb83..b29e6dc44650 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -482,7 +482,8 @@ static int map_check_btf(struct bpf_map *map, const struct btf *btf,
 
         if (map_value_has_spin_lock(map)) {
                 if (map->map_type != BPF_MAP_TYPE_HASH &&
-                    map->map_type != BPF_MAP_TYPE_ARRAY)
+                    map->map_type != BPF_MAP_TYPE_ARRAY &&
+                    map->map_type != BPF_MAP_TYPE_CGROUP_STORAGE)
                         return -ENOTSUPP;
                 if (map->spin_lock_off + sizeof(struct bpf_spin_lock) >
                     map->value_size) {