diff options
author | Matteo Croce <mcroce@microsoft.com> | 2022-02-04 03:55:19 +0300 |
---|---|---|
committer | Alexei Starovoitov <ast@kernel.org> | 2022-02-04 22:29:01 +0300 |
commit | 976a38e05a49f401cf9ae3ae20273db6d69783cf (patch) | |
tree | aacf4465982ac8e65482c3e844d161e4b360a33b /tools/testing/selftests/bpf/bpf_testmod | |
parent | e70e13e7d4ab8f932f49db1c9500b30a34a6d420 (diff) | |
download | linux-976a38e05a49f401cf9ae3ae20273db6d69783cf.tar.xz |
selftests/bpf: Test bpf_core_types_are_compat() functionality.
Add several tests to check bpf_core_types_are_compat() functionality:
- candidate type name exists and types match
- candidate type name exists but types don't match
- nested func protos at kernel recursion limit
- nested func protos above kernel recursion limit. Such bpf prog
is rejected during the load.
Signed-off-by: Matteo Croce <mcroce@microsoft.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220204005519.60361-3-mcroce@linux.microsoft.com
Diffstat (limited to 'tools/testing/selftests/bpf/bpf_testmod')
-rw-r--r-- | tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c index 595d32ab285a..27d63be47b95 100644 --- a/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c +++ b/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c @@ -13,6 +13,10 @@ #define CREATE_TRACE_POINTS #include "bpf_testmod-events.h" +typedef int (*func_proto_typedef)(long); +typedef int (*func_proto_typedef_nested1)(func_proto_typedef); +typedef int (*func_proto_typedef_nested2)(func_proto_typedef_nested1); + DEFINE_PER_CPU(int, bpf_testmod_ksym_percpu) = 123; noinline void @@ -31,6 +35,9 @@ struct bpf_testmod_btf_type_tag_2 { noinline int bpf_testmod_test_btf_type_tag_user_1(struct bpf_testmod_btf_type_tag_1 __user *arg) { + BTF_TYPE_EMIT(func_proto_typedef); + BTF_TYPE_EMIT(func_proto_typedef_nested1); + BTF_TYPE_EMIT(func_proto_typedef_nested2); return arg->a; } |