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[v2,bpf-next,04/10] bpf: don't allow create maps of per-cpu cgroup local storages

Message ID 20180925152114.13537-5-guro@fb.com
State Changes Requested, archived
Delegated to: BPF Maintainers
Headers show
Series bpf: per-cpu cgroup local storage | expand

Commit Message

Roman Gushchin Sept. 25, 2018, 3:21 p.m. UTC 
Explicitly forbid creating map of per-cpu cgroup local storages.
This behavior matches the behavior of shared cgroup storages.

Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexei Starovoitov <ast@kernel.org>
---
 kernel/bpf/map_in_map.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/kernel/bpf/map_in_map.c b/kernel/bpf/map_in_map.c
index 3bfbf4464416..99d243e1ad6e 100644
--- a/kernel/bpf/map_in_map.c
+++ b/kernel/bpf/map_in_map.c
@@ -24,7 +24,8 @@  struct bpf_map *bpf_map_meta_alloc(int inner_map_ufd)
 	 * in the verifier is not enough.
 	 */
 	if (inner_map->map_type == BPF_MAP_TYPE_PROG_ARRAY ||
-	    inner_map->map_type == BPF_MAP_TYPE_CGROUP_STORAGE) {
+	    inner_map->map_type == BPF_MAP_TYPE_CGROUP_STORAGE ||
+	    inner_map->map_type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE) {
 		fdput(f);
 		return ERR_PTR(-ENOTSUPP);
 	}