139 lines
4.2 KiB
C
139 lines
4.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright (c) 2022 Facebook */
|
|
|
|
#include <test_progs.h>
|
|
#include "dynptr_fail.skel.h"
|
|
#include "dynptr_success.skel.h"
|
|
|
|
static size_t log_buf_sz = 1048576; /* 1 MB */
|
|
static char obj_log_buf[1048576];
|
|
|
|
static struct {
|
|
const char *prog_name;
|
|
const char *expected_err_msg;
|
|
} dynptr_tests[] = {
|
|
/* failure cases */
|
|
{"ringbuf_missing_release1", "Unreleased reference id=1"},
|
|
{"ringbuf_missing_release2", "Unreleased reference id=2"},
|
|
{"ringbuf_missing_release_callback", "Unreleased reference id"},
|
|
{"use_after_invalid", "Expected an initialized dynptr as arg #3"},
|
|
{"ringbuf_invalid_api", "type=mem expected=alloc_mem"},
|
|
{"add_dynptr_to_map1", "invalid indirect read from stack"},
|
|
{"add_dynptr_to_map2", "invalid indirect read from stack"},
|
|
{"data_slice_out_of_bounds_ringbuf", "value is outside of the allowed memory range"},
|
|
{"data_slice_out_of_bounds_map_value", "value is outside of the allowed memory range"},
|
|
{"data_slice_use_after_release1", "invalid mem access 'scalar'"},
|
|
{"data_slice_use_after_release2", "invalid mem access 'scalar'"},
|
|
{"data_slice_missing_null_check1", "invalid mem access 'mem_or_null'"},
|
|
{"data_slice_missing_null_check2", "invalid mem access 'mem_or_null'"},
|
|
{"invalid_helper1", "invalid indirect read from stack"},
|
|
{"invalid_helper2", "Expected an initialized dynptr as arg #3"},
|
|
{"invalid_write1", "Expected an initialized dynptr as arg #1"},
|
|
{"invalid_write2", "Expected an initialized dynptr as arg #3"},
|
|
{"invalid_write3", "Expected an initialized dynptr as arg #1"},
|
|
{"invalid_write4", "arg 1 is an unacquired reference"},
|
|
{"invalid_read1", "invalid read from stack"},
|
|
{"invalid_read2", "cannot pass in dynptr at an offset"},
|
|
{"invalid_read3", "invalid read from stack"},
|
|
{"invalid_read4", "invalid read from stack"},
|
|
{"invalid_offset", "invalid write to stack"},
|
|
{"global", "type=map_value expected=fp"},
|
|
{"release_twice", "arg 1 is an unacquired reference"},
|
|
{"release_twice_callback", "arg 1 is an unacquired reference"},
|
|
{"dynptr_from_mem_invalid_api",
|
|
"Unsupported reg type fp for bpf_dynptr_from_mem data"},
|
|
|
|
/* success cases */
|
|
{"test_read_write", NULL},
|
|
{"test_data_slice", NULL},
|
|
{"test_ringbuf", NULL},
|
|
};
|
|
|
|
static void verify_fail(const char *prog_name, const char *expected_err_msg)
|
|
{
|
|
LIBBPF_OPTS(bpf_object_open_opts, opts);
|
|
struct bpf_program *prog;
|
|
struct dynptr_fail *skel;
|
|
int err;
|
|
|
|
opts.kernel_log_buf = obj_log_buf;
|
|
opts.kernel_log_size = log_buf_sz;
|
|
opts.kernel_log_level = 1;
|
|
|
|
skel = dynptr_fail__open_opts(&opts);
|
|
if (!ASSERT_OK_PTR(skel, "dynptr_fail__open_opts"))
|
|
goto cleanup;
|
|
|
|
prog = bpf_object__find_program_by_name(skel->obj, prog_name);
|
|
if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
|
|
goto cleanup;
|
|
|
|
bpf_program__set_autoload(prog, true);
|
|
|
|
bpf_map__set_max_entries(skel->maps.ringbuf, getpagesize());
|
|
|
|
err = dynptr_fail__load(skel);
|
|
if (!ASSERT_ERR(err, "unexpected load success"))
|
|
goto cleanup;
|
|
|
|
if (!ASSERT_OK_PTR(strstr(obj_log_buf, expected_err_msg), "expected_err_msg")) {
|
|
fprintf(stderr, "Expected err_msg: %s\n", expected_err_msg);
|
|
fprintf(stderr, "Verifier output: %s\n", obj_log_buf);
|
|
}
|
|
|
|
cleanup:
|
|
dynptr_fail__destroy(skel);
|
|
}
|
|
|
|
static void verify_success(const char *prog_name)
|
|
{
|
|
struct dynptr_success *skel;
|
|
struct bpf_program *prog;
|
|
struct bpf_link *link;
|
|
|
|
skel = dynptr_success__open();
|
|
if (!ASSERT_OK_PTR(skel, "dynptr_success__open"))
|
|
return;
|
|
|
|
skel->bss->pid = getpid();
|
|
|
|
bpf_map__set_max_entries(skel->maps.ringbuf, getpagesize());
|
|
|
|
dynptr_success__load(skel);
|
|
if (!ASSERT_OK_PTR(skel, "dynptr_success__load"))
|
|
goto cleanup;
|
|
|
|
prog = bpf_object__find_program_by_name(skel->obj, prog_name);
|
|
if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
|
|
goto cleanup;
|
|
|
|
link = bpf_program__attach(prog);
|
|
if (!ASSERT_OK_PTR(link, "bpf_program__attach"))
|
|
goto cleanup;
|
|
|
|
usleep(1);
|
|
|
|
ASSERT_EQ(skel->bss->err, 0, "err");
|
|
|
|
bpf_link__destroy(link);
|
|
|
|
cleanup:
|
|
dynptr_success__destroy(skel);
|
|
}
|
|
|
|
void test_dynptr(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(dynptr_tests); i++) {
|
|
if (!test__start_subtest(dynptr_tests[i].prog_name))
|
|
continue;
|
|
|
|
if (dynptr_tests[i].expected_err_msg)
|
|
verify_fail(dynptr_tests[i].prog_name,
|
|
dynptr_tests[i].expected_err_msg);
|
|
else
|
|
verify_success(dynptr_tests[i].prog_name);
|
|
}
|
|
}
|