diff options
| author | Anton Protopopov <aspsk@isovalent.com> | 2024-04-02 07:33:47 +0000 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2024-04-02 16:12:00 +0200 |
| commit | 9dc182c58b5f5d4ac125ac85ad553f7142aa08d4 (patch) | |
| tree | 71232931a9632e6e627d99f63d2b54e19fcabc69 /kernel | |
| parent | ca4ddc26f8acaa9cb451fcb20f7ab0f02e4970cb (diff) | |
bpf: Add a verbose message if map limit is reached
When more than 64 maps are used by a program and its subprograms the
verifier returns -E2BIG. Add a verbose message which highlights the
source of the error and also print the actual limit.
Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20240402073347.195920-1-aspsk@isovalent.com
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/verifier.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index edb650667f44..fcb62300f407 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -18348,6 +18348,8 @@ static int resolve_pseudo_ldimm64(struct bpf_verifier_env *env) } if (env->used_map_cnt >= MAX_USED_MAPS) { + verbose(env, "The total number of maps per program has reached the limit of %u\n", + MAX_USED_MAPS); fdput(f); return -E2BIG; } |