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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
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@ -18348,6 +18348,8 @@ static int resolve_pseudo_ldimm64(struct bpf_verifier_env *env)
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}
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if (env->used_map_cnt >= MAX_USED_MAPS) {
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if (env->used_map_cnt >= MAX_USED_MAPS) {
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verbose(env, "The total number of maps per program has reached the limit of %u\n",
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MAX_USED_MAPS);
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fdput(f);
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fdput(f);
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return -E2BIG;
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return -E2BIG;
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}
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}
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