selftests/bpf: Clean up user_ringbuf, cgrp_kfunc, kfunc_dynptr_param tests
Clean up user_ringbuf, cgrp_kfunc, and kfunc_dynptr_param tests to use the generic verification tester for checking verifier rejections. The generic verification tester uses btf_decl_tag-based annotations for verifying that the tests fail with the expected log messages. Signed-off-by: Joanne Koong <joannelkoong@gmail.com> Acked-by: David Vernet <void@manifault.com> Reviewed-by: Roberto Sassu <roberto.sassu@huawei.com> Link: https://lore.kernel.org/r/20230214051332.4007131-1-joannelkoong@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Joanne Koong
Alexei Starovoitov
parent
c8ea09974f
commit
8032cad103
@ -8,9 +8,6 @@
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#include "cgrp_kfunc_failure.skel.h"
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#include "cgrp_kfunc_success.skel.h"
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static size_t log_buf_sz = 1 << 20; /* 1 MB */
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static char obj_log_buf[1048576];
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static struct cgrp_kfunc_success *open_load_cgrp_kfunc_skel(void)
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{
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struct cgrp_kfunc_success *skel;
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@ -89,65 +86,6 @@ static const char * const success_tests[] = {
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"test_cgrp_get_ancestors",
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};
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static struct {
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const char *prog_name;
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const char *expected_err_msg;
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} failure_tests[] = {
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{"cgrp_kfunc_acquire_untrusted", "Possibly NULL pointer passed to trusted arg0"},
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{"cgrp_kfunc_acquire_fp", "arg#0 pointer type STRUCT cgroup must point"},
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{"cgrp_kfunc_acquire_unsafe_kretprobe", "reg type unsupported for arg#0 function"},
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{"cgrp_kfunc_acquire_trusted_walked", "R1 must be referenced or trusted"},
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{"cgrp_kfunc_acquire_null", "Possibly NULL pointer passed to trusted arg0"},
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{"cgrp_kfunc_acquire_unreleased", "Unreleased reference"},
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{"cgrp_kfunc_get_non_kptr_param", "arg#0 expected pointer to map value"},
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{"cgrp_kfunc_get_non_kptr_acquired", "arg#0 expected pointer to map value"},
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{"cgrp_kfunc_get_null", "arg#0 expected pointer to map value"},
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{"cgrp_kfunc_xchg_unreleased", "Unreleased reference"},
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{"cgrp_kfunc_get_unreleased", "Unreleased reference"},
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{"cgrp_kfunc_release_untrusted", "arg#0 is untrusted_ptr_or_null_ expected ptr_ or socket"},
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{"cgrp_kfunc_release_fp", "arg#0 pointer type STRUCT cgroup must point"},
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{"cgrp_kfunc_release_null", "arg#0 is ptr_or_null_ expected ptr_ or socket"},
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{"cgrp_kfunc_release_unacquired", "release kernel function bpf_cgroup_release expects"},
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};
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static void verify_fail(const char *prog_name, const char *expected_err_msg)
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{
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LIBBPF_OPTS(bpf_object_open_opts, opts);
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struct cgrp_kfunc_failure *skel;
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int err, i;
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opts.kernel_log_buf = obj_log_buf;
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opts.kernel_log_size = log_buf_sz;
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opts.kernel_log_level = 1;
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skel = cgrp_kfunc_failure__open_opts(&opts);
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if (!ASSERT_OK_PTR(skel, "cgrp_kfunc_failure__open_opts"))
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goto cleanup;
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for (i = 0; i < ARRAY_SIZE(failure_tests); i++) {
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struct bpf_program *prog;
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const char *curr_name = failure_tests[i].prog_name;
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prog = bpf_object__find_program_by_name(skel->obj, curr_name);
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if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
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goto cleanup;
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bpf_program__set_autoload(prog, !strcmp(curr_name, prog_name));
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}
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err = cgrp_kfunc_failure__load(skel);
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if (!ASSERT_ERR(err, "unexpected load success"))
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goto cleanup;
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if (!ASSERT_OK_PTR(strstr(obj_log_buf, expected_err_msg), "expected_err_msg")) {
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fprintf(stderr, "Expected err_msg: %s\n", expected_err_msg);
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fprintf(stderr, "Verifier output: %s\n", obj_log_buf);
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}
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cleanup:
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cgrp_kfunc_failure__destroy(skel);
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}
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void test_cgrp_kfunc(void)
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{
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int i, err;
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@ -163,12 +101,7 @@ void test_cgrp_kfunc(void)
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run_success_test(success_tests[i]);
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}
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for (i = 0; i < ARRAY_SIZE(failure_tests); i++) {
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if (!test__start_subtest(failure_tests[i].prog_name))
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continue;
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verify_fail(failure_tests[i].prog_name, failure_tests[i].expected_err_msg);
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}
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RUN_TESTS(cgrp_kfunc_failure);
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cleanup:
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cleanup_cgroup_environment();
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@ -10,17 +10,11 @@
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#include <test_progs.h>
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#include "test_kfunc_dynptr_param.skel.h"
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static size_t log_buf_sz = 1048576; /* 1 MB */
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static char obj_log_buf[1048576];
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static struct {
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const char *prog_name;
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const char *expected_verifier_err_msg;
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int expected_runtime_err;
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} kfunc_dynptr_tests[] = {
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{"not_valid_dynptr", "cannot pass in dynptr at an offset=-8", 0},
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{"not_ptr_to_stack", "arg#0 expected pointer to stack or dynptr_ptr", 0},
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{"dynptr_data_null", NULL, -EBADMSG},
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{"dynptr_data_null", -EBADMSG},
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};
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static bool kfunc_not_supported;
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@ -38,29 +32,15 @@ static int libbpf_print_cb(enum libbpf_print_level level, const char *fmt,
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return 0;
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}
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static void verify_fail(const char *prog_name, const char *expected_err_msg)
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static bool has_pkcs7_kfunc_support(void)
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{
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struct test_kfunc_dynptr_param *skel;
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LIBBPF_OPTS(bpf_object_open_opts, opts);
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libbpf_print_fn_t old_print_cb;
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struct bpf_program *prog;
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int err;
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opts.kernel_log_buf = obj_log_buf;
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opts.kernel_log_size = log_buf_sz;
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opts.kernel_log_level = 1;
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skel = test_kfunc_dynptr_param__open_opts(&opts);
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if (!ASSERT_OK_PTR(skel, "test_kfunc_dynptr_param__open_opts"))
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goto cleanup;
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prog = bpf_object__find_program_by_name(skel->obj, prog_name);
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if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
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goto cleanup;
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bpf_program__set_autoload(prog, true);
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bpf_map__set_max_entries(skel->maps.ringbuf, getpagesize());
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skel = test_kfunc_dynptr_param__open();
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if (!ASSERT_OK_PTR(skel, "test_kfunc_dynptr_param__open"))
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return false;
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kfunc_not_supported = false;
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@ -72,26 +52,18 @@ static void verify_fail(const char *prog_name, const char *expected_err_msg)
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fprintf(stderr,
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"%s:SKIP:bpf_verify_pkcs7_signature() kfunc not supported\n",
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__func__);
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test__skip();
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goto cleanup;
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test_kfunc_dynptr_param__destroy(skel);
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return false;
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}
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if (!ASSERT_ERR(err, "unexpected load success"))
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goto cleanup;
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if (!ASSERT_OK_PTR(strstr(obj_log_buf, expected_err_msg), "expected_err_msg")) {
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fprintf(stderr, "Expected err_msg: %s\n", expected_err_msg);
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fprintf(stderr, "Verifier output: %s\n", obj_log_buf);
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}
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cleanup:
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test_kfunc_dynptr_param__destroy(skel);
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return true;
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}
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static void verify_success(const char *prog_name, int expected_runtime_err)
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{
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struct test_kfunc_dynptr_param *skel;
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libbpf_print_fn_t old_print_cb;
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struct bpf_program *prog;
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struct bpf_link *link;
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__u32 next_id;
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@ -103,21 +75,7 @@ static void verify_success(const char *prog_name, int expected_runtime_err)
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skel->bss->pid = getpid();
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bpf_map__set_max_entries(skel->maps.ringbuf, getpagesize());
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kfunc_not_supported = false;
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old_print_cb = libbpf_set_print(libbpf_print_cb);
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err = test_kfunc_dynptr_param__load(skel);
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libbpf_set_print(old_print_cb);
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if (err < 0 && kfunc_not_supported) {
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fprintf(stderr,
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"%s:SKIP:bpf_verify_pkcs7_signature() kfunc not supported\n",
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__func__);
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test__skip();
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goto cleanup;
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}
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if (!ASSERT_OK(err, "test_kfunc_dynptr_param__load"))
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goto cleanup;
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@ -147,15 +105,15 @@ void test_kfunc_dynptr_param(void)
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{
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int i;
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if (!has_pkcs7_kfunc_support())
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return;
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for (i = 0; i < ARRAY_SIZE(kfunc_dynptr_tests); i++) {
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if (!test__start_subtest(kfunc_dynptr_tests[i].prog_name))
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continue;
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if (kfunc_dynptr_tests[i].expected_verifier_err_msg)
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verify_fail(kfunc_dynptr_tests[i].prog_name,
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kfunc_dynptr_tests[i].expected_verifier_err_msg);
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else
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verify_success(kfunc_dynptr_tests[i].prog_name,
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kfunc_dynptr_tests[i].expected_runtime_err);
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verify_success(kfunc_dynptr_tests[i].prog_name,
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kfunc_dynptr_tests[i].expected_runtime_err);
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}
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RUN_TESTS(test_kfunc_dynptr_param);
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}
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@ -19,8 +19,6 @@
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#include "../progs/test_user_ringbuf.h"
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static size_t log_buf_sz = 1 << 20; /* 1 MB */
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static char obj_log_buf[1048576];
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static const long c_sample_size = sizeof(struct sample) + BPF_RINGBUF_HDR_SZ;
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static const long c_ringbuf_size = 1 << 12; /* 1 small page */
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static const long c_max_entries = c_ringbuf_size / c_sample_size;
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@ -663,23 +661,6 @@ cleanup:
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user_ringbuf_success__destroy(skel);
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}
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static struct {
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const char *prog_name;
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const char *expected_err_msg;
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} failure_tests[] = {
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/* failure cases */
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{"user_ringbuf_callback_bad_access1", "negative offset dynptr_ptr ptr"},
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{"user_ringbuf_callback_bad_access2", "dereference of modified dynptr_ptr ptr"},
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{"user_ringbuf_callback_write_forbidden", "invalid mem access 'dynptr_ptr'"},
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{"user_ringbuf_callback_null_context_write", "invalid mem access 'scalar'"},
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{"user_ringbuf_callback_null_context_read", "invalid mem access 'scalar'"},
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{"user_ringbuf_callback_discard_dynptr", "cannot release unowned const bpf_dynptr"},
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{"user_ringbuf_callback_submit_dynptr", "cannot release unowned const bpf_dynptr"},
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{"user_ringbuf_callback_invalid_return", "At callback return the register R0 has value"},
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{"user_ringbuf_callback_reinit_dynptr_mem", "Dynptr has to be an uninitialized dynptr"},
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{"user_ringbuf_callback_reinit_dynptr_ringbuf", "Dynptr has to be an uninitialized dynptr"},
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};
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#define SUCCESS_TEST(_func) { _func, #_func }
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static struct {
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@ -700,42 +681,6 @@ static struct {
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SUCCESS_TEST(test_user_ringbuf_blocking_reserve),
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};
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static void verify_fail(const char *prog_name, const char *expected_err_msg)
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{
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LIBBPF_OPTS(bpf_object_open_opts, opts);
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struct bpf_program *prog;
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struct user_ringbuf_fail *skel;
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int err;
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opts.kernel_log_buf = obj_log_buf;
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opts.kernel_log_size = log_buf_sz;
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opts.kernel_log_level = 1;
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skel = user_ringbuf_fail__open_opts(&opts);
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if (!ASSERT_OK_PTR(skel, "dynptr_fail__open_opts"))
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goto cleanup;
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prog = bpf_object__find_program_by_name(skel->obj, prog_name);
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if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
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goto cleanup;
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bpf_program__set_autoload(prog, true);
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bpf_map__set_max_entries(skel->maps.user_ringbuf, getpagesize());
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err = user_ringbuf_fail__load(skel);
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if (!ASSERT_ERR(err, "unexpected load success"))
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goto cleanup;
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if (!ASSERT_OK_PTR(strstr(obj_log_buf, expected_err_msg), "expected_err_msg")) {
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fprintf(stderr, "Expected err_msg: %s\n", expected_err_msg);
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fprintf(stderr, "Verifier output: %s\n", obj_log_buf);
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}
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cleanup:
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user_ringbuf_fail__destroy(skel);
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}
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void test_user_ringbuf(void)
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{
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int i;
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@ -747,10 +692,5 @@ void test_user_ringbuf(void)
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success_tests[i].test_callback();
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}
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for (i = 0; i < ARRAY_SIZE(failure_tests); i++) {
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if (!test__start_subtest(failure_tests[i].prog_name))
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continue;
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verify_fail(failure_tests[i].prog_name, failure_tests[i].expected_err_msg);
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}
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RUN_TESTS(user_ringbuf_fail);
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}
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@ -5,6 +5,7 @@
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#include <bpf/bpf_tracing.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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#include "cgrp_kfunc_common.h"
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char _license[] SEC("license") = "GPL";
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@ -28,6 +29,7 @@ static struct __cgrps_kfunc_map_value *insert_lookup_cgrp(struct cgroup *cgrp)
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}
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SEC("tp_btf/cgroup_mkdir")
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__failure __msg("Possibly NULL pointer passed to trusted arg0")
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int BPF_PROG(cgrp_kfunc_acquire_untrusted, struct cgroup *cgrp, const char *path)
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{
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struct cgroup *acquired;
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@ -45,6 +47,7 @@ int BPF_PROG(cgrp_kfunc_acquire_untrusted, struct cgroup *cgrp, const char *path
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}
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SEC("tp_btf/cgroup_mkdir")
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__failure __msg("arg#0 pointer type STRUCT cgroup must point")
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int BPF_PROG(cgrp_kfunc_acquire_fp, struct cgroup *cgrp, const char *path)
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{
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struct cgroup *acquired, *stack_cgrp = (struct cgroup *)&path;
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@ -57,6 +60,7 @@ int BPF_PROG(cgrp_kfunc_acquire_fp, struct cgroup *cgrp, const char *path)
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}
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SEC("kretprobe/cgroup_destroy_locked")
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__failure __msg("reg type unsupported for arg#0 function")
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int BPF_PROG(cgrp_kfunc_acquire_unsafe_kretprobe, struct cgroup *cgrp)
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{
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struct cgroup *acquired;
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@ -69,6 +73,7 @@ int BPF_PROG(cgrp_kfunc_acquire_unsafe_kretprobe, struct cgroup *cgrp)
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}
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SEC("tp_btf/cgroup_mkdir")
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__failure __msg("cgrp_kfunc_acquire_trusted_walked")
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int BPF_PROG(cgrp_kfunc_acquire_trusted_walked, struct cgroup *cgrp, const char *path)
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{
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struct cgroup *acquired;
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@ -80,8 +85,8 @@ int BPF_PROG(cgrp_kfunc_acquire_trusted_walked, struct cgroup *cgrp, const char
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return 0;
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}
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SEC("tp_btf/cgroup_mkdir")
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__failure __msg("Possibly NULL pointer passed to trusted arg0")
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int BPF_PROG(cgrp_kfunc_acquire_null, struct cgroup *cgrp, const char *path)
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{
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struct cgroup *acquired;
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@ -96,6 +101,7 @@ int BPF_PROG(cgrp_kfunc_acquire_null, struct cgroup *cgrp, const char *path)
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}
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SEC("tp_btf/cgroup_mkdir")
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__failure __msg("Unreleased reference")
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int BPF_PROG(cgrp_kfunc_acquire_unreleased, struct cgroup *cgrp, const char *path)
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{
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struct cgroup *acquired;
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@ -108,6 +114,7 @@ int BPF_PROG(cgrp_kfunc_acquire_unreleased, struct cgroup *cgrp, const char *pat
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}
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SEC("tp_btf/cgroup_mkdir")
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__failure __msg("arg#0 expected pointer to map value")
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int BPF_PROG(cgrp_kfunc_get_non_kptr_param, struct cgroup *cgrp, const char *path)
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{
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struct cgroup *kptr;
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@ -123,6 +130,7 @@ int BPF_PROG(cgrp_kfunc_get_non_kptr_param, struct cgroup *cgrp, const char *pat
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}
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SEC("tp_btf/cgroup_mkdir")
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__failure __msg("arg#0 expected pointer to map value")
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int BPF_PROG(cgrp_kfunc_get_non_kptr_acquired, struct cgroup *cgrp, const char *path)
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{
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struct cgroup *kptr, *acquired;
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@ -141,6 +149,7 @@ int BPF_PROG(cgrp_kfunc_get_non_kptr_acquired, struct cgroup *cgrp, const char *
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}
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SEC("tp_btf/cgroup_mkdir")
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__failure __msg("arg#0 expected pointer to map value")
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int BPF_PROG(cgrp_kfunc_get_null, struct cgroup *cgrp, const char *path)
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{
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struct cgroup *kptr;
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@ -156,6 +165,7 @@ int BPF_PROG(cgrp_kfunc_get_null, struct cgroup *cgrp, const char *path)
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}
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SEC("tp_btf/cgroup_mkdir")
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__failure __msg("Unreleased reference")
|
||||
int BPF_PROG(cgrp_kfunc_xchg_unreleased, struct cgroup *cgrp, const char *path)
|
||||
{
|
||||
struct cgroup *kptr;
|
||||
@ -175,6 +185,7 @@ int BPF_PROG(cgrp_kfunc_xchg_unreleased, struct cgroup *cgrp, const char *path)
|
||||
}
|
||||
|
||||
SEC("tp_btf/cgroup_mkdir")
|
||||
__failure __msg("Unreleased reference")
|
||||
int BPF_PROG(cgrp_kfunc_get_unreleased, struct cgroup *cgrp, const char *path)
|
||||
{
|
||||
struct cgroup *kptr;
|
||||
@ -194,6 +205,7 @@ int BPF_PROG(cgrp_kfunc_get_unreleased, struct cgroup *cgrp, const char *path)
|
||||
}
|
||||
|
||||
SEC("tp_btf/cgroup_mkdir")
|
||||
__failure __msg("arg#0 is untrusted_ptr_or_null_ expected ptr_ or socket")
|
||||
int BPF_PROG(cgrp_kfunc_release_untrusted, struct cgroup *cgrp, const char *path)
|
||||
{
|
||||
struct __cgrps_kfunc_map_value *v;
|
||||
@ -209,6 +221,7 @@ int BPF_PROG(cgrp_kfunc_release_untrusted, struct cgroup *cgrp, const char *path
|
||||
}
|
||||
|
||||
SEC("tp_btf/cgroup_mkdir")
|
||||
__failure __msg("arg#0 pointer type STRUCT cgroup must point")
|
||||
int BPF_PROG(cgrp_kfunc_release_fp, struct cgroup *cgrp, const char *path)
|
||||
{
|
||||
struct cgroup *acquired = (struct cgroup *)&path;
|
||||
@ -220,6 +233,7 @@ int BPF_PROG(cgrp_kfunc_release_fp, struct cgroup *cgrp, const char *path)
|
||||
}
|
||||
|
||||
SEC("tp_btf/cgroup_mkdir")
|
||||
__failure __msg("arg#0 is ptr_or_null_ expected ptr_ or socket")
|
||||
int BPF_PROG(cgrp_kfunc_release_null, struct cgroup *cgrp, const char *path)
|
||||
{
|
||||
struct __cgrps_kfunc_map_value local, *v;
|
||||
@ -251,6 +265,7 @@ int BPF_PROG(cgrp_kfunc_release_null, struct cgroup *cgrp, const char *path)
|
||||
}
|
||||
|
||||
SEC("tp_btf/cgroup_mkdir")
|
||||
__failure __msg("release kernel function bpf_cgroup_release expects")
|
||||
int BPF_PROG(cgrp_kfunc_release_unacquired, struct cgroup *cgrp, const char *path)
|
||||
{
|
||||
/* Cannot release trusted cgroup pointer which was not acquired. */
|
||||
|
||||
@ -10,6 +10,7 @@
|
||||
#include <errno.h>
|
||||
#include <bpf/bpf_helpers.h>
|
||||
#include <bpf/bpf_tracing.h>
|
||||
#include "bpf_misc.h"
|
||||
|
||||
extern struct bpf_key *bpf_lookup_system_key(__u64 id) __ksym;
|
||||
extern void bpf_key_put(struct bpf_key *key) __ksym;
|
||||
@ -19,6 +20,7 @@ extern int bpf_verify_pkcs7_signature(struct bpf_dynptr *data_ptr,
|
||||
|
||||
struct {
|
||||
__uint(type, BPF_MAP_TYPE_RINGBUF);
|
||||
__uint(max_entries, 4096);
|
||||
} ringbuf SEC(".maps");
|
||||
|
||||
struct {
|
||||
@ -33,6 +35,7 @@ int err, pid;
|
||||
char _license[] SEC("license") = "GPL";
|
||||
|
||||
SEC("?lsm.s/bpf")
|
||||
__failure __msg("cannot pass in dynptr at an offset=-8")
|
||||
int BPF_PROG(not_valid_dynptr, int cmd, union bpf_attr *attr, unsigned int size)
|
||||
{
|
||||
unsigned long val;
|
||||
@ -42,6 +45,7 @@ int BPF_PROG(not_valid_dynptr, int cmd, union bpf_attr *attr, unsigned int size)
|
||||
}
|
||||
|
||||
SEC("?lsm.s/bpf")
|
||||
__failure __msg("arg#0 expected pointer to stack or dynptr_ptr")
|
||||
int BPF_PROG(not_ptr_to_stack, int cmd, union bpf_attr *attr, unsigned int size)
|
||||
{
|
||||
unsigned long val;
|
||||
|
||||
@ -16,6 +16,7 @@ struct sample {
|
||||
|
||||
struct {
|
||||
__uint(type, BPF_MAP_TYPE_USER_RINGBUF);
|
||||
__uint(max_entries, 4096);
|
||||
} user_ringbuf SEC(".maps");
|
||||
|
||||
struct {
|
||||
@ -39,7 +40,8 @@ bad_access1(struct bpf_dynptr *dynptr, void *context)
|
||||
/* A callback that accesses a dynptr in a bpf_user_ringbuf_drain callback should
|
||||
* not be able to read before the pointer.
|
||||
*/
|
||||
SEC("?raw_tp/")
|
||||
SEC("?raw_tp")
|
||||
__failure __msg("negative offset dynptr_ptr ptr")
|
||||
int user_ringbuf_callback_bad_access1(void *ctx)
|
||||
{
|
||||
bpf_user_ringbuf_drain(&user_ringbuf, bad_access1, NULL, 0);
|
||||
@ -61,7 +63,8 @@ bad_access2(struct bpf_dynptr *dynptr, void *context)
|
||||
/* A callback that accesses a dynptr in a bpf_user_ringbuf_drain callback should
|
||||
* not be able to read past the end of the pointer.
|
||||
*/
|
||||
SEC("?raw_tp/")
|
||||
SEC("?raw_tp")
|
||||
__failure __msg("dereference of modified dynptr_ptr ptr")
|
||||
int user_ringbuf_callback_bad_access2(void *ctx)
|
||||
{
|
||||
bpf_user_ringbuf_drain(&user_ringbuf, bad_access2, NULL, 0);
|
||||
@ -80,7 +83,8 @@ write_forbidden(struct bpf_dynptr *dynptr, void *context)
|
||||
/* A callback that accesses a dynptr in a bpf_user_ringbuf_drain callback should
|
||||
* not be able to write to that pointer.
|
||||
*/
|
||||
SEC("?raw_tp/")
|
||||
SEC("?raw_tp")
|
||||
__failure __msg("invalid mem access 'dynptr_ptr'")
|
||||
int user_ringbuf_callback_write_forbidden(void *ctx)
|
||||
{
|
||||
bpf_user_ringbuf_drain(&user_ringbuf, write_forbidden, NULL, 0);
|
||||
@ -99,7 +103,8 @@ null_context_write(struct bpf_dynptr *dynptr, void *context)
|
||||
/* A callback that accesses a dynptr in a bpf_user_ringbuf_drain callback should
|
||||
* not be able to write to that pointer.
|
||||
*/
|
||||
SEC("?raw_tp/")
|
||||
SEC("?raw_tp")
|
||||
__failure __msg("invalid mem access 'scalar'")
|
||||
int user_ringbuf_callback_null_context_write(void *ctx)
|
||||
{
|
||||
bpf_user_ringbuf_drain(&user_ringbuf, null_context_write, NULL, 0);
|
||||
@ -120,7 +125,8 @@ null_context_read(struct bpf_dynptr *dynptr, void *context)
|
||||
/* A callback that accesses a dynptr in a bpf_user_ringbuf_drain callback should
|
||||
* not be able to write to that pointer.
|
||||
*/
|
||||
SEC("?raw_tp/")
|
||||
SEC("?raw_tp")
|
||||
__failure __msg("invalid mem access 'scalar'")
|
||||
int user_ringbuf_callback_null_context_read(void *ctx)
|
||||
{
|
||||
bpf_user_ringbuf_drain(&user_ringbuf, null_context_read, NULL, 0);
|
||||
@ -139,7 +145,8 @@ try_discard_dynptr(struct bpf_dynptr *dynptr, void *context)
|
||||
/* A callback that accesses a dynptr in a bpf_user_ringbuf_drain callback should
|
||||
* not be able to read past the end of the pointer.
|
||||
*/
|
||||
SEC("?raw_tp/")
|
||||
SEC("?raw_tp")
|
||||
__failure __msg("cannot release unowned const bpf_dynptr")
|
||||
int user_ringbuf_callback_discard_dynptr(void *ctx)
|
||||
{
|
||||
bpf_user_ringbuf_drain(&user_ringbuf, try_discard_dynptr, NULL, 0);
|
||||
@ -158,7 +165,8 @@ try_submit_dynptr(struct bpf_dynptr *dynptr, void *context)
|
||||
/* A callback that accesses a dynptr in a bpf_user_ringbuf_drain callback should
|
||||
* not be able to read past the end of the pointer.
|
||||
*/
|
||||
SEC("?raw_tp/")
|
||||
SEC("?raw_tp")
|
||||
__failure __msg("cannot release unowned const bpf_dynptr")
|
||||
int user_ringbuf_callback_submit_dynptr(void *ctx)
|
||||
{
|
||||
bpf_user_ringbuf_drain(&user_ringbuf, try_submit_dynptr, NULL, 0);
|
||||
@ -175,7 +183,8 @@ invalid_drain_callback_return(struct bpf_dynptr *dynptr, void *context)
|
||||
/* A callback that accesses a dynptr in a bpf_user_ringbuf_drain callback should
|
||||
* not be able to write to that pointer.
|
||||
*/
|
||||
SEC("?raw_tp/")
|
||||
SEC("?raw_tp")
|
||||
__failure __msg("At callback return the register R0 has value")
|
||||
int user_ringbuf_callback_invalid_return(void *ctx)
|
||||
{
|
||||
bpf_user_ringbuf_drain(&user_ringbuf, invalid_drain_callback_return, NULL, 0);
|
||||
@ -197,14 +206,16 @@ try_reinit_dynptr_ringbuf(struct bpf_dynptr *dynptr, void *context)
|
||||
return 0;
|
||||
}
|
||||
|
||||
SEC("?raw_tp/")
|
||||
SEC("?raw_tp")
|
||||
__failure __msg("Dynptr has to be an uninitialized dynptr")
|
||||
int user_ringbuf_callback_reinit_dynptr_mem(void *ctx)
|
||||
{
|
||||
bpf_user_ringbuf_drain(&user_ringbuf, try_reinit_dynptr_mem, NULL, 0);
|
||||
return 0;
|
||||
}
|
||||
|
||||
SEC("?raw_tp/")
|
||||
SEC("?raw_tp")
|
||||
__failure __msg("Dynptr has to be an uninitialized dynptr")
|
||||
int user_ringbuf_callback_reinit_dynptr_ringbuf(void *ctx)
|
||||
{
|
||||
bpf_user_ringbuf_drain(&user_ringbuf, try_reinit_dynptr_ringbuf, NULL, 0);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user