diff options
| author | Andrii Nakryiko <andrii@kernel.org> | 2024-05-15 09:24:39 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2024-05-15 19:34:54 +0300 |
| commit | 9ee98229083186837199912a7debb666146b8c17 (patch) | |
| tree | ec01949d678ef183fc8ac9707ee5eaaeb7e62e04 /kernel/bpf/map_in_map.c | |
| parent | 325423cafc12031a69692363ddcabc63113bb3d6 (diff) | |
| download | linux-9ee98229083186837199912a7debb666146b8c17.tar.xz | |
bpf: save extended inner map info for percpu array maps as well
ARRAY_OF_MAPS and HASH_OF_MAPS map types have special logic to save
a few extra fields required for correct operations of ARRAY maps, when
they are used as inner maps. PERCPU_ARRAY maps have similar
requirements as they now support generating inline element lookup
logic. So make sure that both classes of maps are handled correctly.
Reported-by: Jakub Kicinski <kuba@kernel.org>
Fixes: db69718b8efa ("bpf: inline bpf_map_lookup_elem() for PERCPU_ARRAY maps")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20240515062440.846086-1-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/map_in_map.c')
| -rw-r--r-- | kernel/bpf/map_in_map.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/bpf/map_in_map.c b/kernel/bpf/map_in_map.c index 8ef269e66ba5..b4f18c85d7bc 100644 --- a/kernel/bpf/map_in_map.c +++ b/kernel/bpf/map_in_map.c @@ -32,7 +32,7 @@ struct bpf_map *bpf_map_meta_alloc(int inner_map_ufd) inner_map_meta_size = sizeof(*inner_map_meta); /* In some cases verifier needs to access beyond just base map. */ - if (inner_map->ops == &array_map_ops) + if (inner_map->ops == &array_map_ops || inner_map->ops == &percpu_array_map_ops) inner_map_meta_size = sizeof(struct bpf_array); inner_map_meta = kzalloc(inner_map_meta_size, GFP_USER); @@ -68,7 +68,7 @@ struct bpf_map *bpf_map_meta_alloc(int inner_map_ufd) /* Misc members not needed in bpf_map_meta_equal() check. */ inner_map_meta->ops = inner_map->ops; - if (inner_map->ops == &array_map_ops) { + if (inner_map->ops == &array_map_ops || inner_map->ops == &percpu_array_map_ops) { struct bpf_array *inner_array_meta = container_of(inner_map_meta, struct bpf_array, map); struct bpf_array *inner_array = container_of(inner_map, struct bpf_array, map); |