xref: /linux/tools/testing/selftests/bpf/prog_tests/verifier.c (revision d9104cec3e8fe4b458b74709853231385779001f)
1 // SPDX-License-Identifier: GPL-2.0-only
2 
3 #include <test_progs.h>
4 
5 #include "cap_helpers.h"
6 #include "verifier_and.skel.h"
7 #include "verifier_arena.skel.h"
8 #include "verifier_arena_large.skel.h"
9 #include "verifier_array_access.skel.h"
10 #include "verifier_basic_stack.skel.h"
11 #include "verifier_bitfield_write.skel.h"
12 #include "verifier_bounds.skel.h"
13 #include "verifier_bounds_deduction.skel.h"
14 #include "verifier_bounds_deduction_non_const.skel.h"
15 #include "verifier_bounds_mix_sign_unsign.skel.h"
16 #include "verifier_bpf_get_stack.skel.h"
17 #include "verifier_bpf_trap.skel.h"
18 #include "verifier_bswap.skel.h"
19 #include "verifier_btf_ctx_access.skel.h"
20 #include "verifier_btf_unreliable_prog.skel.h"
21 #include "verifier_cfg.skel.h"
22 #include "verifier_cgroup_inv_retcode.skel.h"
23 #include "verifier_cgroup_skb.skel.h"
24 #include "verifier_cgroup_storage.skel.h"
25 #include "verifier_const.skel.h"
26 #include "verifier_const_or.skel.h"
27 #include "verifier_ctx.skel.h"
28 #include "verifier_ctx_sk_msg.skel.h"
29 #include "verifier_d_path.skel.h"
30 #include "verifier_direct_packet_access.skel.h"
31 #include "verifier_direct_stack_access_wraparound.skel.h"
32 #include "verifier_div0.skel.h"
33 #include "verifier_div_overflow.skel.h"
34 #include "verifier_global_subprogs.skel.h"
35 #include "verifier_global_ptr_args.skel.h"
36 #include "verifier_gotol.skel.h"
37 #include "verifier_helper_access_var_len.skel.h"
38 #include "verifier_helper_packet_access.skel.h"
39 #include "verifier_helper_restricted.skel.h"
40 #include "verifier_helper_value_access.skel.h"
41 #include "verifier_int_ptr.skel.h"
42 #include "verifier_iterating_callbacks.skel.h"
43 #include "verifier_jeq_infer_not_null.skel.h"
44 #include "verifier_jit_convergence.skel.h"
45 #include "verifier_ld_ind.skel.h"
46 #include "verifier_ldsx.skel.h"
47 #include "verifier_leak_ptr.skel.h"
48 #include "verifier_linked_scalars.skel.h"
49 #include "verifier_load_acquire.skel.h"
50 #include "verifier_loops1.skel.h"
51 #include "verifier_lwt.skel.h"
52 #include "verifier_map_in_map.skel.h"
53 #include "verifier_map_ptr.skel.h"
54 #include "verifier_map_ptr_mixing.skel.h"
55 #include "verifier_map_ret_val.skel.h"
56 #include "verifier_masking.skel.h"
57 #include "verifier_may_goto_1.skel.h"
58 #include "verifier_may_goto_2.skel.h"
59 #include "verifier_meta_access.skel.h"
60 #include "verifier_movsx.skel.h"
61 #include "verifier_mtu.skel.h"
62 #include "verifier_netfilter_ctx.skel.h"
63 #include "verifier_netfilter_retcode.skel.h"
64 #include "verifier_bpf_fastcall.skel.h"
65 #include "verifier_or_jmp32_k.skel.h"
66 #include "verifier_precision.skel.h"
67 #include "verifier_prevent_map_lookup.skel.h"
68 #include "verifier_private_stack.skel.h"
69 #include "verifier_raw_stack.skel.h"
70 #include "verifier_raw_tp_writable.skel.h"
71 #include "verifier_reg_equal.skel.h"
72 #include "verifier_ref_tracking.skel.h"
73 #include "verifier_regalloc.skel.h"
74 #include "verifier_ringbuf.skel.h"
75 #include "verifier_runtime_jit.skel.h"
76 #include "verifier_scalar_ids.skel.h"
77 #include "verifier_sdiv.skel.h"
78 #include "verifier_search_pruning.skel.h"
79 #include "verifier_sock.skel.h"
80 #include "verifier_sock_addr.skel.h"
81 #include "verifier_sockmap_mutate.skel.h"
82 #include "verifier_spill_fill.skel.h"
83 #include "verifier_spin_lock.skel.h"
84 #include "verifier_stack_ptr.skel.h"
85 #include "verifier_store_release.skel.h"
86 #include "verifier_subprog_precision.skel.h"
87 #include "verifier_subreg.skel.h"
88 #include "verifier_tailcall.skel.h"
89 #include "verifier_tailcall_jit.skel.h"
90 #include "verifier_typedef.skel.h"
91 #include "verifier_uninit.skel.h"
92 #include "verifier_unpriv.skel.h"
93 #include "verifier_unpriv_perf.skel.h"
94 #include "verifier_value_adj_spill.skel.h"
95 #include "verifier_value.skel.h"
96 #include "verifier_value_illegal_alu.skel.h"
97 #include "verifier_value_or_null.skel.h"
98 #include "verifier_value_ptr_arith.skel.h"
99 #include "verifier_var_off.skel.h"
100 #include "verifier_vfs_accept.skel.h"
101 #include "verifier_vfs_reject.skel.h"
102 #include "verifier_xadd.skel.h"
103 #include "verifier_xdp.skel.h"
104 #include "verifier_xdp_direct_packet_access.skel.h"
105 #include "verifier_bits_iter.skel.h"
106 #include "verifier_lsm.skel.h"
107 #include "irq.skel.h"
108 
109 #define MAX_ENTRIES 11
110 
111 struct test_val {
112 	unsigned int index;
113 	int foo[MAX_ENTRIES];
114 };
115 
116 __maybe_unused
run_tests_aux(const char * skel_name,skel_elf_bytes_fn elf_bytes_factory,pre_execution_cb pre_execution_cb)117 static void run_tests_aux(const char *skel_name,
118 			  skel_elf_bytes_fn elf_bytes_factory,
119 			  pre_execution_cb pre_execution_cb)
120 {
121 	struct test_loader tester = {};
122 	__u64 old_caps;
123 	int err;
124 
125 	/* test_verifier tests are executed w/o CAP_SYS_ADMIN, do the same here */
126 	err = cap_disable_effective(1ULL << CAP_SYS_ADMIN, &old_caps);
127 	if (err) {
128 		PRINT_FAIL("failed to drop CAP_SYS_ADMIN: %i, %s\n", err, strerror(-err));
129 		return;
130 	}
131 
132 	test_loader__set_pre_execution_cb(&tester, pre_execution_cb);
133 	test_loader__run_subtests(&tester, skel_name, elf_bytes_factory);
134 	test_loader_fini(&tester);
135 
136 	err = cap_enable_effective(old_caps, NULL);
137 	if (err)
138 		PRINT_FAIL("failed to restore CAP_SYS_ADMIN: %i, %s\n", err, strerror(-err));
139 }
140 
141 #define RUN(skel) run_tests_aux(#skel, skel##__elf_bytes, NULL)
142 
test_verifier_and(void)143 void test_verifier_and(void)                  { RUN(verifier_and); }
test_verifier_arena(void)144 void test_verifier_arena(void)                { RUN(verifier_arena); }
test_verifier_arena_large(void)145 void test_verifier_arena_large(void)          { RUN(verifier_arena_large); }
test_verifier_basic_stack(void)146 void test_verifier_basic_stack(void)          { RUN(verifier_basic_stack); }
test_verifier_bitfield_write(void)147 void test_verifier_bitfield_write(void)       { RUN(verifier_bitfield_write); }
test_verifier_bounds(void)148 void test_verifier_bounds(void)               { RUN(verifier_bounds); }
test_verifier_bounds_deduction(void)149 void test_verifier_bounds_deduction(void)     { RUN(verifier_bounds_deduction); }
test_verifier_bounds_deduction_non_const(void)150 void test_verifier_bounds_deduction_non_const(void)     { RUN(verifier_bounds_deduction_non_const); }
test_verifier_bounds_mix_sign_unsign(void)151 void test_verifier_bounds_mix_sign_unsign(void) { RUN(verifier_bounds_mix_sign_unsign); }
test_verifier_bpf_get_stack(void)152 void test_verifier_bpf_get_stack(void)        { RUN(verifier_bpf_get_stack); }
test_verifier_bpf_trap(void)153 void test_verifier_bpf_trap(void)             { RUN(verifier_bpf_trap); }
test_verifier_bswap(void)154 void test_verifier_bswap(void)                { RUN(verifier_bswap); }
test_verifier_btf_ctx_access(void)155 void test_verifier_btf_ctx_access(void)       { RUN(verifier_btf_ctx_access); }
test_verifier_btf_unreliable_prog(void)156 void test_verifier_btf_unreliable_prog(void)  { RUN(verifier_btf_unreliable_prog); }
test_verifier_cfg(void)157 void test_verifier_cfg(void)                  { RUN(verifier_cfg); }
test_verifier_cgroup_inv_retcode(void)158 void test_verifier_cgroup_inv_retcode(void)   { RUN(verifier_cgroup_inv_retcode); }
test_verifier_cgroup_skb(void)159 void test_verifier_cgroup_skb(void)           { RUN(verifier_cgroup_skb); }
test_verifier_cgroup_storage(void)160 void test_verifier_cgroup_storage(void)       { RUN(verifier_cgroup_storage); }
test_verifier_const(void)161 void test_verifier_const(void)                { RUN(verifier_const); }
test_verifier_const_or(void)162 void test_verifier_const_or(void)             { RUN(verifier_const_or); }
test_verifier_ctx(void)163 void test_verifier_ctx(void)                  { RUN(verifier_ctx); }
test_verifier_ctx_sk_msg(void)164 void test_verifier_ctx_sk_msg(void)           { RUN(verifier_ctx_sk_msg); }
test_verifier_d_path(void)165 void test_verifier_d_path(void)               { RUN(verifier_d_path); }
test_verifier_direct_packet_access(void)166 void test_verifier_direct_packet_access(void) { RUN(verifier_direct_packet_access); }
test_verifier_direct_stack_access_wraparound(void)167 void test_verifier_direct_stack_access_wraparound(void) { RUN(verifier_direct_stack_access_wraparound); }
test_verifier_div0(void)168 void test_verifier_div0(void)                 { RUN(verifier_div0); }
test_verifier_div_overflow(void)169 void test_verifier_div_overflow(void)         { RUN(verifier_div_overflow); }
test_verifier_global_subprogs(void)170 void test_verifier_global_subprogs(void)      { RUN(verifier_global_subprogs); }
test_verifier_global_ptr_args(void)171 void test_verifier_global_ptr_args(void)      { RUN(verifier_global_ptr_args); }
test_verifier_gotol(void)172 void test_verifier_gotol(void)                { RUN(verifier_gotol); }
test_verifier_helper_access_var_len(void)173 void test_verifier_helper_access_var_len(void) { RUN(verifier_helper_access_var_len); }
test_verifier_helper_packet_access(void)174 void test_verifier_helper_packet_access(void) { RUN(verifier_helper_packet_access); }
test_verifier_helper_restricted(void)175 void test_verifier_helper_restricted(void)    { RUN(verifier_helper_restricted); }
test_verifier_helper_value_access(void)176 void test_verifier_helper_value_access(void)  { RUN(verifier_helper_value_access); }
test_verifier_int_ptr(void)177 void test_verifier_int_ptr(void)              { RUN(verifier_int_ptr); }
test_verifier_iterating_callbacks(void)178 void test_verifier_iterating_callbacks(void)  { RUN(verifier_iterating_callbacks); }
test_verifier_jeq_infer_not_null(void)179 void test_verifier_jeq_infer_not_null(void)   { RUN(verifier_jeq_infer_not_null); }
test_verifier_jit_convergence(void)180 void test_verifier_jit_convergence(void)      { RUN(verifier_jit_convergence); }
test_verifier_load_acquire(void)181 void test_verifier_load_acquire(void)         { RUN(verifier_load_acquire); }
test_verifier_ld_ind(void)182 void test_verifier_ld_ind(void)               { RUN(verifier_ld_ind); }
test_verifier_ldsx(void)183 void test_verifier_ldsx(void)                  { RUN(verifier_ldsx); }
test_verifier_leak_ptr(void)184 void test_verifier_leak_ptr(void)             { RUN(verifier_leak_ptr); }
test_verifier_linked_scalars(void)185 void test_verifier_linked_scalars(void)       { RUN(verifier_linked_scalars); }
test_verifier_loops1(void)186 void test_verifier_loops1(void)               { RUN(verifier_loops1); }
test_verifier_lwt(void)187 void test_verifier_lwt(void)                  { RUN(verifier_lwt); }
test_verifier_map_in_map(void)188 void test_verifier_map_in_map(void)           { RUN(verifier_map_in_map); }
test_verifier_map_ptr(void)189 void test_verifier_map_ptr(void)              { RUN(verifier_map_ptr); }
test_verifier_map_ptr_mixing(void)190 void test_verifier_map_ptr_mixing(void)       { RUN(verifier_map_ptr_mixing); }
test_verifier_map_ret_val(void)191 void test_verifier_map_ret_val(void)          { RUN(verifier_map_ret_val); }
test_verifier_masking(void)192 void test_verifier_masking(void)              { RUN(verifier_masking); }
test_verifier_may_goto_1(void)193 void test_verifier_may_goto_1(void)           { RUN(verifier_may_goto_1); }
test_verifier_may_goto_2(void)194 void test_verifier_may_goto_2(void)           { RUN(verifier_may_goto_2); }
test_verifier_meta_access(void)195 void test_verifier_meta_access(void)          { RUN(verifier_meta_access); }
test_verifier_movsx(void)196 void test_verifier_movsx(void)                 { RUN(verifier_movsx); }
test_verifier_netfilter_ctx(void)197 void test_verifier_netfilter_ctx(void)        { RUN(verifier_netfilter_ctx); }
test_verifier_netfilter_retcode(void)198 void test_verifier_netfilter_retcode(void)    { RUN(verifier_netfilter_retcode); }
test_verifier_bpf_fastcall(void)199 void test_verifier_bpf_fastcall(void)         { RUN(verifier_bpf_fastcall); }
test_verifier_or_jmp32_k(void)200 void test_verifier_or_jmp32_k(void)           { RUN(verifier_or_jmp32_k); }
test_verifier_precision(void)201 void test_verifier_precision(void)            { RUN(verifier_precision); }
test_verifier_prevent_map_lookup(void)202 void test_verifier_prevent_map_lookup(void)   { RUN(verifier_prevent_map_lookup); }
test_verifier_private_stack(void)203 void test_verifier_private_stack(void)        { RUN(verifier_private_stack); }
test_verifier_raw_stack(void)204 void test_verifier_raw_stack(void)            { RUN(verifier_raw_stack); }
test_verifier_raw_tp_writable(void)205 void test_verifier_raw_tp_writable(void)      { RUN(verifier_raw_tp_writable); }
test_verifier_reg_equal(void)206 void test_verifier_reg_equal(void)            { RUN(verifier_reg_equal); }
test_verifier_ref_tracking(void)207 void test_verifier_ref_tracking(void)         { RUN(verifier_ref_tracking); }
test_verifier_regalloc(void)208 void test_verifier_regalloc(void)             { RUN(verifier_regalloc); }
test_verifier_ringbuf(void)209 void test_verifier_ringbuf(void)              { RUN(verifier_ringbuf); }
test_verifier_runtime_jit(void)210 void test_verifier_runtime_jit(void)          { RUN(verifier_runtime_jit); }
test_verifier_scalar_ids(void)211 void test_verifier_scalar_ids(void)           { RUN(verifier_scalar_ids); }
test_verifier_sdiv(void)212 void test_verifier_sdiv(void)                 { RUN(verifier_sdiv); }
test_verifier_search_pruning(void)213 void test_verifier_search_pruning(void)       { RUN(verifier_search_pruning); }
test_verifier_sock(void)214 void test_verifier_sock(void)                 { RUN(verifier_sock); }
test_verifier_sock_addr(void)215 void test_verifier_sock_addr(void)            { RUN(verifier_sock_addr); }
test_verifier_sockmap_mutate(void)216 void test_verifier_sockmap_mutate(void)       { RUN(verifier_sockmap_mutate); }
test_verifier_spill_fill(void)217 void test_verifier_spill_fill(void)           { RUN(verifier_spill_fill); }
test_verifier_spin_lock(void)218 void test_verifier_spin_lock(void)            { RUN(verifier_spin_lock); }
test_verifier_stack_ptr(void)219 void test_verifier_stack_ptr(void)            { RUN(verifier_stack_ptr); }
test_verifier_store_release(void)220 void test_verifier_store_release(void)        { RUN(verifier_store_release); }
test_verifier_subprog_precision(void)221 void test_verifier_subprog_precision(void)    { RUN(verifier_subprog_precision); }
test_verifier_subreg(void)222 void test_verifier_subreg(void)               { RUN(verifier_subreg); }
test_verifier_tailcall(void)223 void test_verifier_tailcall(void)             { RUN(verifier_tailcall); }
test_verifier_tailcall_jit(void)224 void test_verifier_tailcall_jit(void)         { RUN(verifier_tailcall_jit); }
test_verifier_typedef(void)225 void test_verifier_typedef(void)              { RUN(verifier_typedef); }
test_verifier_uninit(void)226 void test_verifier_uninit(void)               { RUN(verifier_uninit); }
test_verifier_unpriv(void)227 void test_verifier_unpriv(void)               { RUN(verifier_unpriv); }
test_verifier_unpriv_perf(void)228 void test_verifier_unpriv_perf(void)          { RUN(verifier_unpriv_perf); }
test_verifier_value_adj_spill(void)229 void test_verifier_value_adj_spill(void)      { RUN(verifier_value_adj_spill); }
test_verifier_value(void)230 void test_verifier_value(void)                { RUN(verifier_value); }
test_verifier_value_illegal_alu(void)231 void test_verifier_value_illegal_alu(void)    { RUN(verifier_value_illegal_alu); }
test_verifier_value_or_null(void)232 void test_verifier_value_or_null(void)        { RUN(verifier_value_or_null); }
test_verifier_var_off(void)233 void test_verifier_var_off(void)              { RUN(verifier_var_off); }
test_verifier_vfs_accept(void)234 void test_verifier_vfs_accept(void)	      { RUN(verifier_vfs_accept); }
test_verifier_vfs_reject(void)235 void test_verifier_vfs_reject(void)	      { RUN(verifier_vfs_reject); }
test_verifier_xadd(void)236 void test_verifier_xadd(void)                 { RUN(verifier_xadd); }
test_verifier_xdp(void)237 void test_verifier_xdp(void)                  { RUN(verifier_xdp); }
test_verifier_xdp_direct_packet_access(void)238 void test_verifier_xdp_direct_packet_access(void) { RUN(verifier_xdp_direct_packet_access); }
test_verifier_bits_iter(void)239 void test_verifier_bits_iter(void) { RUN(verifier_bits_iter); }
test_verifier_lsm(void)240 void test_verifier_lsm(void)                  { RUN(verifier_lsm); }
test_irq(void)241 void test_irq(void)			      { RUN(irq); }
test_verifier_mtu(void)242 void test_verifier_mtu(void)		      { RUN(verifier_mtu); }
243 
init_test_val_map(struct bpf_object * obj,char * map_name)244 static int init_test_val_map(struct bpf_object *obj, char *map_name)
245 {
246 	struct test_val value = {
247 		.index = (6 + 1) * sizeof(int),
248 		.foo[6] = 0xabcdef12,
249 	};
250 	struct bpf_map *map;
251 	int err, key = 0;
252 
253 	map = bpf_object__find_map_by_name(obj, map_name);
254 	if (!map) {
255 		PRINT_FAIL("Can't find map '%s'\n", map_name);
256 		return -EINVAL;
257 	}
258 
259 	err = bpf_map_update_elem(bpf_map__fd(map), &key, &value, 0);
260 	if (err) {
261 		PRINT_FAIL("Error while updating map '%s': %d\n", map_name, err);
262 		return err;
263 	}
264 
265 	return 0;
266 }
267 
init_array_access_maps(struct bpf_object * obj)268 static int init_array_access_maps(struct bpf_object *obj)
269 {
270 	return init_test_val_map(obj, "map_array_ro");
271 }
272 
test_verifier_array_access(void)273 void test_verifier_array_access(void)
274 {
275 	run_tests_aux("verifier_array_access",
276 		      verifier_array_access__elf_bytes,
277 		      init_array_access_maps);
278 }
279 
init_value_ptr_arith_maps(struct bpf_object * obj)280 static int init_value_ptr_arith_maps(struct bpf_object *obj)
281 {
282 	return init_test_val_map(obj, "map_array_48b");
283 }
284 
test_verifier_value_ptr_arith(void)285 void test_verifier_value_ptr_arith(void)
286 {
287 	run_tests_aux("verifier_value_ptr_arith",
288 		      verifier_value_ptr_arith__elf_bytes,
289 		      init_value_ptr_arith_maps);
290 }
291