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Linux/tools/testing/selftests/bpf/prog_tests/verifier.c

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

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