selftests/bpf: Add unit tests for pointers in global functions

test_global_func9  - check valid pointer's scenarios
test_global_func10 - check that a smaller type cannot be passed as a
                     larger one
test_global_func11 - check that CTX pointer cannot be passed
test_global_func12 - check access to a null pointer
test_global_func13 - check access to an arbitrary pointer value
test_global_func14 - check that an opaque pointer cannot be passed
test_global_func15 - check that a variable has an unknown value after
		     it was passed to a global function by pointer
test_global_func16 - check access to uninitialized stack memory

test_global_func_args - check read and write operations through a pointer

Signed-off-by: Dmitrii Banshchikov <me@ubique.spb.ru>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210212205642.620788-5-me@ubique.spb.ru

1 files changed, 8 insertions, 0 deletions

diff --git a/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c b/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c
index 32e4348b714b..7e13129f593a 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_global_funcs.c
@@ -61,6 +61,14 @@ void test_test_global_funcs(void)
 		{ "test_global_func6.o" , "modified ctx ptr R2" },
 		{ "test_global_func7.o" , "foo() doesn't return scalar" },
 		{ "test_global_func8.o" },
+		{ "test_global_func9.o" },
+		{ "test_global_func10.o", "invalid indirect read from stack" },
+		{ "test_global_func11.o", "Caller passes invalid args into func#1" },
+		{ "test_global_func12.o", "invalid mem access 'mem_or_null'" },
+		{ "test_global_func13.o", "Caller passes invalid args into func#1" },
+		{ "test_global_func14.o", "reference type('FWD S') size cannot be determined" },
+		{ "test_global_func15.o", "At program exit the register R0 has value" },
+		{ "test_global_func16.o", "invalid indirect read from stack" },
 	};
 	libbpf_print_fn_t old_print_fn = NULL;
 	int err, i, duration = 0;