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| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-07-19 17:36:32 +0200 |
|---|---|---|
| committer | Eduard Zingerman <eddyz87@gmail.com> | 2026-07-21 16:32:38 -0700 |
| commit | 643bd5af853f41cc16e8d0d2e0ae12d60844402d (patch) | |
| tree | 7e60f02c28677b80b9abb93da328603914af02a3 | |
| parent | 9f2afb635cffd670e71580a3070b6e5c68fb99c5 (diff) | |
| download | linux-643bd5af853f41cc16e8d0d2e0ae12d60844402d.tar.gz linux-643bd5af853f41cc16e8d0d2e0ae12d60844402d.zip | |
selftests/bpf: Test duplicate bpf_refcount fields
Add a raw BTF test with two bpf_refcount fields. The duplicate must be
rejected during BTF loading instead of reaching the duplicate-field
invariant in btf_parse_fields().
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://patch.msgid.link/20260719153634.2908692-6-memxor@gmail.com
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/btf.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c index 2100400d896b..67b9015cbd98 100644 --- a/tools/testing/selftests/bpf/prog_tests/btf.c +++ b/tools/testing/selftests/bpf/prog_tests/btf.c @@ -4277,6 +4277,27 @@ static struct btf_raw_test raw_tests[] = { .btf_load_err = true, }, +/* + * struct value { + * struct bpf_refcount a; + * struct bpf_refcount b; + * }; + */ +{ + .descr = "struct test duplicate bpf_refcount fields", + .raw_types = { + BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4), /* [1] */ + BTF_STRUCT_ENC(NAME_TBD, 1, 4), /* [2] */ + BTF_MEMBER_ENC(NAME_TBD, 1, 0), + BTF_STRUCT_ENC(NAME_TBD, 2, 8), /* [3] */ + BTF_MEMBER_ENC(NAME_TBD, 2, 0), + BTF_MEMBER_ENC(NAME_TBD, 2, 32), + BTF_END_RAW, + }, + BTF_STR_SEC("\0int\0bpf_refcount\0refs\0value\0a\0b"), + .btf_load_err = true, +}, + { .descr = "struct test repeated fields count overflow", .raw_types = { |