Commit e697d8dc authored by Jiri Olsa's avatar Jiri Olsa Committed by Alexei Starovoitov
Browse files

selftests/bpf: Add kprobe_multi check to module attach test 



Adding test that makes sure the kernel module won't be removed
if there's kprobe multi link defined on top of it.

Acked-by: default avatarSong Liu <song@kernel.org>
Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20221025134148.3300700-8-jolsa@kernel.org


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent fee356ed

tools/testing/selftests/bpf/prog_tests/module_attach.c

+7 −0
Original line number Diff line number Diff line
@@ -103,6 +103,13 @@ void test_module_attach(void) 
	ASSERT_ERR(delete_module("bpf_testmod", 0), "delete_module");

	bpf_link__destroy(link);



	link = bpf_program__attach(skel->progs.kprobe_multi);

	if (!ASSERT_OK_PTR(link, "attach_kprobe_multi"))

		goto cleanup;



	ASSERT_ERR(delete_module("bpf_testmod", 0), "delete_module");

	bpf_link__destroy(link);



cleanup:

	test_module_attach__destroy(skel);

}

tools/testing/selftests/bpf/progs/test_module_attach.c

+6 −0
Original line number Diff line number Diff line
@@ -110,4 +110,10 @@ int BPF_PROG(handle_fmod_ret, 
	return 0; /* don't override the exit code */

}



SEC("kprobe.multi/bpf_testmod_test_read")

int BPF_PROG(kprobe_multi)

{

	return 0;

}



char _license[] SEC("license") = "GPL";