From 1bd7931728718bc463c43b78ab74954452e099e3 Mon Sep 17 00:00:00 2001 From: Yonghong Song Date: Sun, 27 Aug 2023 08:28:32 -0700 Subject: selftests/bpf: Add some negative tests Add a few negative tests for common mistakes with using percpu kptr including: - store to percpu kptr. - type mistach in bpf_kptr_xchg arguments. - sleepable prog with untrusted arg for bpf_this_cpu_ptr(). - bpf_percpu_obj_new && bpf_obj_drop, and bpf_obj_new && bpf_percpu_obj_drop - struct with ptr for bpf_percpu_obj_new - struct with special field (e.g., bpf_spin_lock) for bpf_percpu_obj_new Signed-off-by: Yonghong Song Link: https://lore.kernel.org/r/20230827152832.2002421-1-yonghong.song@linux.dev Signed-off-by: Alexei Starovoitov --- tools/testing/selftests/bpf/prog_tests/percpu_alloc.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'tools/testing/selftests/bpf/prog_tests/percpu_alloc.c') diff --git a/tools/testing/selftests/bpf/prog_tests/percpu_alloc.c b/tools/testing/selftests/bpf/prog_tests/percpu_alloc.c index 41bf784a4bb3..9541e9b3a034 100644 --- a/tools/testing/selftests/bpf/prog_tests/percpu_alloc.c +++ b/tools/testing/selftests/bpf/prog_tests/percpu_alloc.c @@ -2,6 +2,7 @@ #include #include "percpu_alloc_array.skel.h" #include "percpu_alloc_cgrp_local_storage.skel.h" +#include "percpu_alloc_fail.skel.h" static void test_array(void) { @@ -107,6 +108,10 @@ close_fd: close(cgroup_fd); } +static void test_failure(void) { + RUN_TESTS(percpu_alloc_fail); +} + void test_percpu_alloc(void) { if (test__start_subtest("array")) @@ -115,4 +120,6 @@ void test_percpu_alloc(void) test_array_sleepable(); if (test__start_subtest("cgrp_local_storage")) test_cgrp_local_storage(); + if (test__start_subtest("failure_tests")) + test_failure(); } -- cgit v1.2.3