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-rw-r--r--tools/testing/selftests/bpf/prog_tests/btf.c128
1 files changed, 121 insertions, 7 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index 00965a6e83bb..054ecb6b1e9f 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -3551,6 +3551,40 @@ static struct btf_raw_test raw_tests[] = {
BTF_STR_SEC("\0x\0?.foo bar:buz"),
},
{
+ .descr = "datasec: name with non-printable first char not is ok",
+ .raw_types = {
+ /* int */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
+ /* VAR x */ /* [2] */
+ BTF_TYPE_ENC(1, BTF_INFO_ENC(BTF_KIND_VAR, 0, 0), 1),
+ BTF_VAR_STATIC,
+ /* DATASEC ?.data */ /* [3] */
+ BTF_TYPE_ENC(3, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
+ BTF_VAR_SECINFO_ENC(2, 0, 4),
+ BTF_END_RAW,
+ },
+ BTF_STR_SEC("\0x\0\7foo"),
+ .err_str = "Invalid name",
+ .btf_load_err = true,
+},
+{
+ .descr = "datasec: name '\\0' is not ok",
+ .raw_types = {
+ /* int */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
+ /* VAR x */ /* [2] */
+ BTF_TYPE_ENC(1, BTF_INFO_ENC(BTF_KIND_VAR, 0, 0), 1),
+ BTF_VAR_STATIC,
+ /* DATASEC \0 */ /* [3] */
+ BTF_TYPE_ENC(3, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
+ BTF_VAR_SECINFO_ENC(2, 0, 4),
+ BTF_END_RAW,
+ },
+ BTF_STR_SEC("\0x\0"),
+ .err_str = "Invalid name",
+ .btf_load_err = true,
+},
+{
.descr = "type name '?foo' is not ok",
.raw_types = {
/* union ?foo; */
@@ -3832,11 +3866,11 @@ static struct btf_raw_test raw_tests[] = {
.err_str = "vlen != 0",
},
{
- .descr = "decl_tag test #8, invalid kflag",
+ .descr = "decl_tag test #8, tag with kflag",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
BTF_VAR_ENC(NAME_TBD, 1, 0), /* [2] */
- BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 1, 0), 2), (-1),
+ BTF_DECL_ATTR_ENC(NAME_TBD, 2, -1),
BTF_END_RAW,
},
BTF_STR_SEC("\0local\0tag1"),
@@ -3847,8 +3881,6 @@ static struct btf_raw_test raw_tests[] = {
.key_type_id = 1,
.value_type_id = 1,
.max_entries = 1,
- .btf_load_err = true,
- .err_str = "Invalid btf_info kind_flag",
},
{
.descr = "decl_tag test #9, var, invalid component_idx",
@@ -4173,6 +4205,23 @@ static struct btf_raw_test raw_tests[] = {
.err_str = "Type tags don't precede modifiers",
},
{
+ .descr = "type_tag test #7, tag with kflag",
+ .raw_types = {
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
+ BTF_TYPE_ATTR_ENC(NAME_TBD, 1), /* [2] */
+ BTF_PTR_ENC(2), /* [3] */
+ BTF_END_RAW,
+ },
+ BTF_STR_SEC("\0tag"),
+ .map_type = BPF_MAP_TYPE_ARRAY,
+ .map_name = "tag_type_check_btf",
+ .key_size = sizeof(int),
+ .value_size = 4,
+ .key_type_id = 1,
+ .value_type_id = 1,
+ .max_entries = 1,
+},
+{
.descr = "enum64 test #1, unsigned, size 8",
.raw_types = {
BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
@@ -4986,7 +5035,7 @@ struct pprint_mapv_int128 {
static struct btf_raw_test pprint_test_template[] = {
{
.raw_types = {
- /* unsighed char */ /* [1] */
+ /* unsigned char */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 8, 1),
/* unsigned short */ /* [2] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 16, 2),
@@ -5053,7 +5102,7 @@ static struct btf_raw_test pprint_test_template[] = {
* be encoded with kind_flag set.
*/
.raw_types = {
- /* unsighed char */ /* [1] */
+ /* unsigned char */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 8, 1),
/* unsigned short */ /* [2] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 16, 2),
@@ -5120,7 +5169,7 @@ static struct btf_raw_test pprint_test_template[] = {
* will have both int and enum types.
*/
.raw_types = {
- /* unsighed char */ /* [1] */
+ /* unsigned char */ /* [1] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 8, 1),
/* unsigned short */ /* [2] */
BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 16, 2),
@@ -7447,6 +7496,71 @@ static struct btf_dedup_test dedup_tests[] = {
},
},
{
+ .descr = "dedup: recursive typedef",
+ /*
+ * This test simulates a recursive typedef, which in GO is defined as such:
+ *
+ * type Foo func() Foo
+ *
+ * In BTF terms, this is represented as a TYPEDEF referencing
+ * a FUNC_PROTO that returns the same TYPEDEF.
+ */
+ .input = {
+ .raw_types = {
+ /*
+ * [1] typedef Foo -> func() Foo
+ * [2] func_proto() -> Foo
+ * [3] typedef Foo -> func() Foo
+ * [4] func_proto() -> Foo
+ */
+ BTF_TYPEDEF_ENC(NAME_NTH(1), 2), /* [1] */
+ BTF_FUNC_PROTO_ENC(1, 0), /* [2] */
+ BTF_TYPEDEF_ENC(NAME_NTH(1), 4), /* [3] */
+ BTF_FUNC_PROTO_ENC(3, 0), /* [4] */
+ BTF_END_RAW,
+ },
+ BTF_STR_SEC("\0Foo"),
+ },
+ .expect = {
+ .raw_types = {
+ BTF_TYPEDEF_ENC(NAME_NTH(1), 2), /* [1] */
+ BTF_FUNC_PROTO_ENC(1, 0), /* [2] */
+ BTF_END_RAW,
+ },
+ BTF_STR_SEC("\0Foo"),
+ },
+},
+{
+ .descr = "dedup: typedef",
+ /*
+ * // CU 1:
+ * typedef int foo;
+ *
+ * // CU 2:
+ * typedef int foo;
+ */
+ .input = {
+ .raw_types = {
+ /* CU 1 */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
+ BTF_TYPEDEF_ENC(NAME_NTH(1), 1), /* [2] */
+ /* CU 2 */
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [3] */
+ BTF_TYPEDEF_ENC(NAME_NTH(1), 3), /* [4] */
+ BTF_END_RAW,
+ },
+ BTF_STR_SEC("\0foo"),
+ },
+ .expect = {
+ .raw_types = {
+ BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
+ BTF_TYPEDEF_ENC(NAME_NTH(1), 1), /* [2] */
+ BTF_END_RAW,
+ },
+ BTF_STR_SEC("\0foo"),
+ },
+},
+{
.descr = "dedup: typedef tags",
.input = {
.raw_types = {
generated by cgit (git 2.34.1) at 2025-12-25 02:35:06 +0000