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| author | Alexei Starovoitov <ast@kernel.org> | 2019-09-17 10:45:37 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-09-19 14:22:44 +0200 |
| commit | 9eea984979513d6ee137e545e26c5877d46039dd (patch) | |
| tree | 44705f0e9fad8a7b3206d3b582e06875ce86f565 /kernel | |
| parent | e0973a421c6e9d268db2157bcb8756e7ab4b4313 (diff) | |
| download | linux-9eea984979513d6ee137e545e26c5877d46039dd.tar.gz linux-9eea984979513d6ee137e545e26c5877d46039dd.tar.bz2 linux-9eea984979513d6ee137e545e26c5877d46039dd.zip | |
bpf: fix BTF verification of enums
vmlinux BTF has enums that are 8 byte and 1 byte in size.
2 byte enum is a valid construct as well.
Fix BTF enum verification to accept those sizes.
Fixes: 69b693f0aefa ("bpf: btf: Introduce BPF Type Format (BTF)")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/btf.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c index adb3adcebe3c..722d38e543e9 100644 --- a/kernel/bpf/btf.c +++ b/kernel/bpf/btf.c @@ -2377,9 +2377,8 @@ static s32 btf_enum_check_meta(struct btf_verifier_env *env, return -EINVAL; } - if (t->size != sizeof(int)) { - btf_verifier_log_type(env, t, "Expected size:%zu", - sizeof(int)); + if (t->size > 8 || !is_power_of_2(t->size)) { + btf_verifier_log_type(env, t, "Unexpected size"); return -EINVAL; } |