[PATCH bpf-next 06/12] selftests/bpf: Fix selftests failure

[Yonghong Song <yhs@fb.com>]

The kflag is supported now for BTF_KIND_ENUM.
So remove the test which tests verifier failure
due to existence of kflag.

With enum64 support in kernel and libbpf,
selftest btf_dump/btf_dump failed with
no-enum64 support llvm for the following
enum definition:
 enum e2 {
        C = 100,
        D = 4294967295,
        E = 0,
 };

With the no-enum64 support llvm, the signedness is
'signed' by default, and D (4294967295 = 0xffffffff)
will print as -1. With enum64 support llvm, the signedness
is 'unsigned' and the value of D will print as 4294967295.
To support both old and new compilers, this patch
changed the value to 268435455 = 0xfffffff which works
with both enum64 or non-enum64 support llvm.

Signed-off-by: Yonghong Song <yhs@fb.com>
---
 tools/testing/selftests/bpf/prog_tests/btf.c  | 20 -------------------
 .../bpf/progs/btf_dump_test_case_syntax.c     |  2 +-
 2 files changed, 1 insertion(+), 21 deletions(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index ba5bde53d418..8e068e06b3e8 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -2896,26 +2896,6 @@ static struct btf_raw_test raw_tests[] = {
 	.err_str = "Invalid btf_info kind_flag",
 },
 
-{
-	.descr = "invalid enum kind_flag",
-	.raw_types = {
-		BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),		/* [1] */
-		BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 1, 1), 4),	/* [2] */
-		BTF_ENUM_ENC(NAME_TBD, 0),
-		BTF_END_RAW,
-	},
-	BTF_STR_SEC("\0A"),
-	.map_type = BPF_MAP_TYPE_ARRAY,
-	.map_name = "enum_type_check_btf",
-	.key_size = sizeof(int),
-	.value_size = sizeof(int),
-	.key_type_id = 1,
-	.value_type_id = 1,
-	.max_entries = 4,
-	.btf_load_err = true,
-	.err_str = "Invalid btf_info kind_flag",
-},
-
 {
 	.descr = "valid fwd kind_flag",
 	.raw_types = {
diff --git a/tools/testing/selftests/bpf/progs/btf_dump_test_case_syntax.c b/tools/testing/selftests/bpf/progs/btf_dump_test_case_syntax.c
index 1c7105fcae3c..4068cea4be53 100644
--- a/tools/testing/selftests/bpf/progs/btf_dump_test_case_syntax.c
+++ b/tools/testing/selftests/bpf/progs/btf_dump_test_case_syntax.c
@@ -13,7 +13,7 @@ enum e1 {
 
 enum e2 {
 	C = 100,
-	D = 4294967295,
+	D = 268435455,
 	E = 0,
 };
 
-- 
2.30.2