diff options
| author | Mykyta Yatsenko <yatsenko@meta.com> | 2025-05-12 21:53:48 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-05-12 18:32:47 -0700 |
| commit | c61bcd29eda9ea8db753ad5217fd24d9ee42a96b (patch) | |
| tree | 0408a432e2a56edf773653bc7908c9b2b1ffd7b7 /tools/testing/selftests/bpf/prog_tests/dynptr.c | |
| parent | a498ee7576de24b4b0916ce56cf2686e261a29f7 (diff) | |
selftests/bpf: introduce tests for dynptr copy kfuncs
Introduce selftests verifying newly-added dynptr copy kfuncs.
Covering contiguous and non-contiguous memory backed dynptrs.
Disable test_probe_read_user_str_dynptr that triggers bug in
strncpy_from_user_nofault. Patch to fix the issue [1].
[1] https://patchwork.kernel.org/project/linux-mm/patch/20250422131449.57177-1-mykyta.yatsenko5@gmail.com/
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Link: https://lore.kernel.org/r/20250512205348.191079-4-mykyta.yatsenko5@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/dynptr.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/dynptr.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/dynptr.c b/tools/testing/selftests/bpf/prog_tests/dynptr.c index e29cc16124c2..62e7ec775f24 100644 --- a/tools/testing/selftests/bpf/prog_tests/dynptr.c +++ b/tools/testing/selftests/bpf/prog_tests/dynptr.c @@ -33,10 +33,19 @@ static struct { {"test_dynptr_skb_no_buff", SETUP_SKB_PROG}, {"test_dynptr_skb_strcmp", SETUP_SKB_PROG}, {"test_dynptr_skb_tp_btf", SETUP_SKB_PROG_TP}, + {"test_probe_read_user_dynptr", SETUP_XDP_PROG}, + {"test_probe_read_kernel_dynptr", SETUP_XDP_PROG}, + {"test_probe_read_user_str_dynptr", SETUP_XDP_PROG}, + {"test_probe_read_kernel_str_dynptr", SETUP_XDP_PROG}, + {"test_copy_from_user_dynptr", SETUP_SYSCALL_SLEEP}, + {"test_copy_from_user_str_dynptr", SETUP_SYSCALL_SLEEP}, + {"test_copy_from_user_task_dynptr", SETUP_SYSCALL_SLEEP}, + {"test_copy_from_user_task_str_dynptr", SETUP_SYSCALL_SLEEP}, }; static void verify_success(const char *prog_name, enum test_setup_type setup_type) { + char user_data[384] = {[0 ... 382] = 'a', '\0'}; struct dynptr_success *skel; struct bpf_program *prog; struct bpf_link *link; @@ -58,6 +67,10 @@ static void verify_success(const char *prog_name, enum test_setup_type setup_typ if (!ASSERT_OK(err, "dynptr_success__load")) goto cleanup; + skel->bss->user_ptr = user_data; + skel->data->test_len[0] = sizeof(user_data); + memcpy(skel->bss->expected_str, user_data, sizeof(user_data)); + switch (setup_type) { case SETUP_SYSCALL_SLEEP: link = bpf_program__attach(prog); |