Line data Source code
1 : #undef FD_SPAD_USE_HANDHOLDING
2 : #define FD_SPAD_USE_HANDHOLDING 1
3 :
4 : #include "fd_solfuzz_private.h"
5 : #include "fd_instr_harness.h"
6 : #include "../fd_executor.h"
7 : #include "../context/fd_exec_txn_ctx.h"
8 : #include "../program/fd_bpf_loader_program.h"
9 : #include "../sysvar/fd_sysvar.h"
10 : #include "../sysvar/fd_sysvar_clock.h"
11 : #include "../sysvar/fd_sysvar_epoch_schedule.h"
12 : #include "../sysvar/fd_sysvar_recent_hashes.h"
13 : #include "../sysvar/fd_sysvar_rent.h"
14 : #include "../sysvar/fd_sysvar_last_restart_slot.h"
15 : #include "../fd_system_ids.h"
16 : #include <assert.h>
17 :
18 : int
19 : fd_runtime_fuzz_instr_ctx_create( fd_solfuzz_runner_t * runner,
20 : fd_exec_instr_ctx_t * ctx,
21 : fd_exec_test_instr_context_t const * test_ctx,
22 0 : bool is_syscall ) {
23 :
24 0 : memset( ctx, 0, sizeof(fd_exec_instr_ctx_t) );
25 :
26 0 : fd_funk_t * funk = runner->accdb->funk;
27 :
28 : /* Generate unique ID for funk txn */
29 :
30 0 : fd_funk_txn_xid_t xid[1] = {{ .ul={ LONG_MAX, LONG_MAX } }};
31 :
32 : /* Create temporary funk transaction and txn / slot / epoch contexts */
33 :
34 0 : fd_funk_txn_xid_t parent_xid; fd_funk_txn_xid_set_root( &parent_xid );
35 0 : fd_accdb_attach_child ( runner->accdb_admin, &parent_xid, xid );
36 0 : fd_progcache_txn_attach_child( runner->progcache_admin, &parent_xid, xid );
37 :
38 : /* Allocate contexts */
39 0 : uchar * txn_ctx_mem = fd_spad_alloc( runner->spad,FD_EXEC_TXN_CTX_ALIGN, FD_EXEC_TXN_CTX_FOOTPRINT );
40 0 : fd_exec_txn_ctx_t * txn_ctx = fd_exec_txn_ctx_join ( fd_exec_txn_ctx_new ( txn_ctx_mem ), runner->spad, fd_wksp_containing( runner->spad ) );
41 :
42 0 : ctx->txn_ctx = txn_ctx;
43 :
44 : /* Bank manager */
45 0 : fd_banks_clear_bank( runner->banks, runner->bank );
46 :
47 0 : fd_features_t * features = fd_bank_features_modify( runner->bank );
48 0 : fd_exec_test_feature_set_t const * feature_set = &test_ctx->epoch_context.features;
49 0 : if( !fd_runtime_fuzz_restore_features( features, feature_set ) ) {
50 0 : return 0;
51 0 : }
52 :
53 : /* Setup vote states accounts */
54 0 : fd_vote_states_t * vote_states = fd_vote_states_join( fd_vote_states_new( fd_bank_vote_states_locking_modify( runner->bank ), 4UL, 999UL ) );
55 0 : if( FD_UNLIKELY( !vote_states ) ) FD_LOG_ERR(( "fd_vote_states_new failed" ));
56 0 : fd_bank_vote_states_end_locking_modify( runner->bank );
57 :
58 0 : fd_vote_states_t * vote_states_prev = fd_vote_states_join( fd_vote_states_new( fd_bank_vote_states_prev_locking_modify( runner->bank ), 4UL, 999UL ) );
59 0 : if( FD_UNLIKELY( !vote_states_prev ) ) FD_LOG_ERR(( "fd_vote_states_new for prev failed" ));
60 0 : fd_bank_vote_states_prev_end_locking_modify( runner->bank );
61 :
62 0 : fd_vote_states_t * vote_states_prev_prev = fd_vote_states_join( fd_vote_states_new( fd_bank_vote_states_prev_prev_locking_modify( runner->bank ), 4UL, 999UL ) );
63 0 : if( FD_UNLIKELY( !vote_states_prev_prev ) ) FD_LOG_ERR(( "fd_vote_staets_new for prev2 failed" ));
64 0 : fd_bank_vote_states_prev_prev_end_locking_modify( runner->bank );
65 :
66 : /* Blockhash queue init */
67 :
68 0 : ulong blockhash_seed; FD_TEST( fd_rng_secure( &blockhash_seed, sizeof(ulong) ) );
69 0 : fd_blockhashes_t * blockhashes = fd_blockhashes_init( fd_bank_block_hash_queue_modify( runner->bank ), blockhash_seed );
70 0 : fd_memset( fd_blockhash_deq_push_tail_nocopy( blockhashes->d.deque ), 0, sizeof(fd_hash_t) );
71 :
72 : /* Set up mock txn descriptor */
73 0 : fd_txn_p_t * txn = fd_spad_alloc_check( runner->spad, fd_txn_align(), fd_txn_footprint( 1UL, 0UL ) );
74 0 : fd_txn_t * txn_descriptor = TXN( txn );
75 0 : txn_descriptor->transaction_version = FD_TXN_V0;
76 0 : txn_descriptor->acct_addr_cnt = (ushort)test_ctx->accounts_count;
77 :
78 0 : uchar * progcache_scratch = fd_spad_alloc_check( runner->spad, FD_PROGCACHE_SCRATCH_ALIGN, FD_PROGCACHE_SCRATCH_FOOTPRINT );
79 :
80 0 : fd_exec_txn_ctx_setup( runner->bank,
81 0 : runner->accdb->funk->shmem,
82 0 : runner->progcache->funk->shmem,
83 0 : xid,
84 0 : NULL,
85 0 : txn_ctx,
86 0 : NULL,
87 0 : progcache_scratch,
88 0 : FD_PROGCACHE_SCRATCH_FOOTPRINT );
89 0 : fd_exec_txn_ctx_setup_basic( txn_ctx );
90 :
91 0 : txn_ctx->txn = *txn;
92 0 : txn_ctx->compute_budget_details.compute_unit_limit = test_ctx->cu_avail;
93 0 : txn_ctx->compute_budget_details.compute_meter = test_ctx->cu_avail;
94 0 : txn_ctx->spad = runner->spad;
95 0 : txn_ctx->instr_info_cnt = 1UL;
96 0 : txn_ctx->fuzz_config.enable_vm_tracing = runner->enable_vm_tracing;
97 :
98 : /* Set up instruction context */
99 :
100 0 : fd_instr_info_t * info = fd_spad_alloc( runner->spad, 8UL, sizeof(fd_instr_info_t) );
101 0 : assert( info );
102 0 : memset( info, 0, sizeof(fd_instr_info_t) );
103 :
104 0 : if( test_ctx->data ) {
105 0 : info->data_sz = (ushort)test_ctx->data->size;
106 0 : info->data = test_ctx->data->bytes;
107 0 : }
108 :
109 0 : txn_ctx->instr_infos[ 0UL ] = *info;
110 :
111 : /* Prepare borrowed account table (correctly handles aliasing) */
112 :
113 0 : if( FD_UNLIKELY( test_ctx->accounts_count > MAX_TX_ACCOUNT_LOCKS ) ) {
114 0 : FD_LOG_NOTICE(( "too many accounts" ));
115 0 : return 0;
116 0 : }
117 :
118 : /* Load accounts into database */
119 :
120 0 : fd_txn_account_t * accts = txn_ctx->accounts;
121 0 : fd_memset( accts, 0, test_ctx->accounts_count * sizeof(fd_txn_account_t) );
122 0 : txn_ctx->accounts_cnt = test_ctx->accounts_count;
123 :
124 0 : int has_program_id = 0;
125 :
126 0 : for( ulong j=0UL; j < test_ctx->accounts_count; j++ ) {
127 0 : fd_pubkey_t * acc_key = (fd_pubkey_t *)test_ctx->accounts[j].address;
128 :
129 0 : memcpy( &(txn_ctx->account_keys[j]), test_ctx->accounts[j].address, sizeof(fd_pubkey_t) );
130 0 : if( !fd_runtime_fuzz_load_account( &accts[j], funk, xid, &test_ctx->accounts[j], 0 ) ) {
131 0 : return 0;
132 0 : }
133 :
134 0 : fd_txn_account_t * acc = &accts[j];
135 0 : if( fd_txn_account_get_meta( acc ) ) {
136 0 : uchar * data = fd_spad_alloc( txn_ctx->spad, FD_ACCOUNT_REC_ALIGN, FD_ACC_TOT_SZ_MAX );
137 0 : ulong dlen = fd_txn_account_get_data_len( acc );
138 0 : fd_account_meta_t * meta = (fd_account_meta_t *)data;
139 0 : fd_memcpy( data, fd_txn_account_get_meta( acc ), sizeof(fd_account_meta_t)+dlen );
140 0 : if( FD_UNLIKELY( !fd_txn_account_join( fd_txn_account_new( acc, acc_key, meta, 0 ), txn_ctx->spad_wksp ) ) ) {
141 0 : FD_LOG_CRIT(( "Failed to join and new a txn account" ));
142 0 : }
143 0 : }
144 :
145 0 : if( !memcmp( accts[j].pubkey, test_ctx->program_id, sizeof(fd_pubkey_t) ) ) {
146 0 : has_program_id = 1;
147 0 : info->program_id = (uchar)txn_ctx->accounts_cnt;
148 0 : }
149 :
150 : /* Since the instructions sysvar is set as mutable at the txn level, we need to make it mutable here as well. */
151 0 : if( !memcmp( accts[j].pubkey, &fd_sysvar_instructions_id, sizeof(fd_pubkey_t) ) ) {
152 0 : fd_txn_account_set_mutable( acc );
153 0 : }
154 0 : }
155 :
156 : /* If the program id is not in the set of accounts it must be added to the set of accounts. */
157 0 : if( FD_UNLIKELY( !has_program_id ) ) {
158 0 : fd_txn_account_t * program_acc = &accts[ test_ctx->accounts_count ];
159 0 : fd_pubkey_t * program_key = &txn_ctx->account_keys[ txn_ctx->accounts_cnt ];
160 0 : memcpy( program_key, test_ctx->program_id, sizeof(fd_pubkey_t) );
161 :
162 0 : fd_account_meta_t * meta = fd_spad_alloc( txn_ctx->spad, alignof(fd_account_meta_t), sizeof(fd_account_meta_t) );
163 0 : fd_account_meta_init( meta );
164 :
165 0 : if( FD_UNLIKELY( !fd_txn_account_join( fd_txn_account_new(
166 0 : program_acc,
167 0 : program_key,
168 0 : meta,
169 0 : 1 ), txn_ctx->spad_wksp ) ) ) {
170 0 : FD_LOG_CRIT(( "Failed to join and new a txn account" ));
171 0 : }
172 :
173 0 : info->program_id = (uchar)txn_ctx->accounts_cnt;
174 0 : txn_ctx->accounts_cnt++;
175 0 : }
176 :
177 : /* Load in executable accounts */
178 0 : for( ulong i = 0; i < txn_ctx->accounts_cnt; i++ ) {
179 0 : fd_pubkey_t * acc_key = (fd_pubkey_t *)test_ctx->accounts[i].address;
180 :
181 0 : fd_txn_account_t * acc = &accts[i];
182 0 : if ( !fd_executor_pubkey_is_bpf_loader( fd_txn_account_get_owner( acc ) ) ) {
183 0 : continue;
184 0 : }
185 :
186 0 : fd_account_meta_t const * meta = fd_txn_account_get_meta( acc );
187 0 : if( meta == NULL ) {
188 0 : uchar * mem = fd_spad_alloc( txn_ctx->spad, FD_TXN_ACCOUNT_ALIGN, sizeof(fd_account_meta_t) );
189 0 : fd_account_meta_t * meta = (fd_account_meta_t *)mem;
190 0 : memset( meta, 0, sizeof(fd_account_meta_t) );
191 0 : if( FD_UNLIKELY( !fd_txn_account_join( fd_txn_account_new( acc, acc_key, meta, 0 ), txn_ctx->spad_wksp ) ) ) {
192 0 : FD_LOG_CRIT(( "Failed to join and new a txn account" ));
193 0 : }
194 0 : continue;
195 0 : }
196 :
197 0 : if( FD_UNLIKELY( !memcmp(meta->owner, fd_solana_bpf_loader_upgradeable_program_id.key, sizeof(fd_pubkey_t)) ) ) {
198 0 : fd_bpf_upgradeable_loader_state_t * program_loader_state = fd_bpf_loader_program_get_state( acc,
199 0 : txn_ctx->spad,
200 0 : NULL );
201 :
202 0 : if( FD_UNLIKELY( !program_loader_state ) ) {
203 0 : continue;
204 0 : }
205 :
206 0 : if( !fd_bpf_upgradeable_loader_state_is_program( program_loader_state ) ) {
207 0 : continue;
208 0 : }
209 :
210 0 : fd_pubkey_t * programdata_acc = &program_loader_state->inner.program.programdata_address;
211 0 : if( FD_UNLIKELY( fd_txn_account_init_from_funk_readonly( &txn_ctx->executable_accounts[txn_ctx->executable_cnt],
212 0 : programdata_acc,
213 0 : txn_ctx->funk,
214 0 : txn_ctx->xid ) ) ) {
215 0 : continue;
216 0 : }
217 0 : txn_ctx->executable_cnt++;
218 0 : }
219 0 : }
220 :
221 : /* Set slot bank variables and ensure all relevant sysvars are present */
222 0 : fd_sol_sysvar_last_restart_slot_t last_restart_slot_[1];
223 0 : FD_TEST( fd_sysvar_last_restart_slot_read( funk, xid, last_restart_slot_ ) );
224 :
225 0 : fd_sol_sysvar_clock_t clock_[1];
226 0 : fd_sol_sysvar_clock_t * clock = fd_sysvar_clock_read( funk, xid, clock_ );
227 0 : FD_TEST( clock );
228 0 : fd_bank_slot_set( runner->bank, clock->slot );
229 :
230 0 : fd_epoch_schedule_t epoch_schedule_[1];
231 0 : fd_epoch_schedule_t * epoch_schedule = fd_sysvar_epoch_schedule_read( funk, xid, epoch_schedule_ );
232 0 : FD_TEST( epoch_schedule );
233 0 : fd_bank_epoch_schedule_set( runner->bank, *epoch_schedule );
234 :
235 : /* Override epoch bank rent setting */
236 0 : fd_rent_t const * rent = fd_sysvar_rent_read( funk, xid, runner->spad );
237 0 : FD_TEST( rent );
238 0 : fd_bank_rent_set( runner->bank, *rent );
239 :
240 : /* Override most recent blockhash if given */
241 0 : fd_recent_block_hashes_t const * rbh = fd_sysvar_recent_hashes_read( funk, xid, runner->spad );
242 0 : FD_TEST( rbh );
243 0 : if( !deq_fd_block_block_hash_entry_t_empty( rbh->hashes ) ) {
244 0 : fd_block_block_hash_entry_t const * last = deq_fd_block_block_hash_entry_t_peek_tail_const( rbh->hashes );
245 0 : if( last ) {
246 0 : fd_blockhashes_t * blockhashes = fd_bank_block_hash_queue_modify( runner->bank );
247 0 : fd_blockhashes_pop_new( blockhashes );
248 0 : fd_blockhash_info_t * info = fd_blockhashes_push_new( blockhashes, &last->blockhash );
249 0 : info->fee_calculator = last->fee_calculator;
250 :
251 0 : fd_bank_lamports_per_signature_set( runner->bank, last->fee_calculator.lamports_per_signature );
252 :
253 0 : fd_bank_prev_lamports_per_signature_set( runner->bank, last->fee_calculator.lamports_per_signature );
254 0 : }
255 0 : }
256 :
257 : /* Load instruction accounts */
258 :
259 0 : if( FD_UNLIKELY( test_ctx->instr_accounts_count > MAX_TX_ACCOUNT_LOCKS ) ) {
260 0 : FD_LOG_NOTICE(( "too many instruction accounts" ));
261 0 : return 0;
262 0 : }
263 :
264 : /* Restore sysvar cache */
265 0 : fd_sysvar_cache_restore_fuzz( runner->bank, runner->accdb->funk, xid );
266 0 : ctx->sysvar_cache = fd_bank_sysvar_cache_modify( runner->bank );
267 :
268 0 : uchar acc_idx_seen[ FD_INSTR_ACCT_MAX ] = {0};
269 0 : for( ulong j=0UL; j < test_ctx->instr_accounts_count; j++ ) {
270 0 : uint index = test_ctx->instr_accounts[j].index;
271 0 : if( index >= test_ctx->accounts_count ) {
272 0 : FD_LOG_NOTICE( ( "instruction account index out of range (%u > %u)", index, test_ctx->instr_accounts_count ) );
273 0 : return 0;
274 0 : }
275 :
276 0 : fd_txn_account_t * acc = &accts[ index ];
277 :
278 : /* Setup instruction accounts */
279 0 : fd_instr_info_setup_instr_account( info,
280 0 : acc_idx_seen,
281 0 : (ushort)index,
282 0 : (ushort)j,
283 0 : (ushort)j,
284 0 : test_ctx->instr_accounts[j].is_writable,
285 0 : test_ctx->instr_accounts[j].is_signer );
286 :
287 0 : if( test_ctx->instr_accounts[j].is_writable ) {
288 0 : fd_txn_account_set_mutable( acc );
289 0 : }
290 0 : }
291 0 : info->acct_cnt = (uchar)test_ctx->instr_accounts_count;
292 :
293 : /* The remaining checks enforce that the program is in the accounts list. */
294 0 : bool found_program_id = false;
295 0 : for( uint i = 0; i < test_ctx->accounts_count; i++ ) {
296 0 : if( 0 == memcmp( test_ctx->accounts[i].address, test_ctx->program_id, sizeof(fd_pubkey_t) ) ) {
297 0 : info->program_id = (uchar) i;
298 0 : found_program_id = true;
299 0 : break;
300 0 : }
301 0 : }
302 :
303 : /* Early returning only happens in instruction execution. */
304 0 : if( !is_syscall && !found_program_id ) {
305 0 : FD_LOG_NOTICE(( " Unable to find program_id in accounts" ));
306 0 : return 0;
307 0 : }
308 :
309 0 : ctx->instr = info;
310 :
311 : /* Refresh the setup from the updated slot and epoch ctx. */
312 0 : fd_exec_txn_ctx_setup( runner->bank,
313 0 : runner->accdb->funk->shmem,
314 0 : runner->progcache->funk->shmem,
315 0 : xid,
316 0 : NULL,
317 0 : txn_ctx,
318 0 : NULL,
319 0 : progcache_scratch,
320 0 : FD_PROGCACHE_SCRATCH_FOOTPRINT );
321 :
322 0 : fd_log_collector_init( &ctx->txn_ctx->log_collector, 1 );
323 0 : fd_base58_encode_32( txn_ctx->account_keys[ ctx->instr->program_id ].uc, NULL, ctx->program_id_base58 );
324 :
325 0 : return 1;
326 0 : }
327 :
328 : void
329 : fd_runtime_fuzz_instr_ctx_destroy( fd_solfuzz_runner_t * runner,
330 0 : fd_exec_instr_ctx_t * ctx ) {
331 0 : if( !ctx ) return;
332 0 : fd_accdb_clear( runner->accdb_admin );
333 0 : fd_progcache_clear( runner->progcache_admin );
334 0 : }
335 :
336 : ulong
337 : fd_solfuzz_instr_run( fd_solfuzz_runner_t * runner,
338 : void const * input_,
339 : void ** output_,
340 : void * output_buf,
341 0 : ulong output_bufsz ) {
342 0 : fd_exec_test_instr_context_t const * input = fd_type_pun_const( input_ );
343 0 : fd_exec_test_instr_effects_t ** output = fd_type_pun( output_ );
344 :
345 : /* Convert the Protobuf inputs to a fd_exec context */
346 0 : fd_exec_instr_ctx_t ctx[1];
347 0 : if( !fd_runtime_fuzz_instr_ctx_create( runner, ctx, input, false ) ) {
348 0 : fd_runtime_fuzz_instr_ctx_destroy( runner, ctx );
349 0 : return 0UL;
350 0 : }
351 :
352 0 : fd_instr_info_t * instr = (fd_instr_info_t *) ctx->instr;
353 :
354 : /* Execute the test */
355 0 : int exec_result = fd_execute_instr(ctx->txn_ctx, instr);
356 :
357 : /* Allocate space to capture outputs */
358 :
359 0 : ulong output_end = (ulong)output_buf + output_bufsz;
360 0 : FD_SCRATCH_ALLOC_INIT( l, output_buf );
361 :
362 0 : fd_exec_test_instr_effects_t * effects =
363 0 : FD_SCRATCH_ALLOC_APPEND( l, alignof(fd_exec_test_instr_effects_t),
364 0 : sizeof (fd_exec_test_instr_effects_t) );
365 0 : if( FD_UNLIKELY( _l > output_end ) ) {
366 0 : fd_runtime_fuzz_instr_ctx_destroy( runner, ctx );
367 0 : return 0UL;
368 0 : }
369 0 : fd_memset( effects, 0, sizeof(fd_exec_test_instr_effects_t) );
370 :
371 : /* Capture error code */
372 :
373 0 : effects->result = -exec_result;
374 0 : effects->cu_avail = ctx->txn_ctx->compute_budget_details.compute_meter;
375 :
376 : /* Don't capture custom error codes if the program is a precompile */
377 0 : if( FD_LIKELY( effects->result ) ) {
378 0 : int program_id_idx = ctx->instr[ 0UL ].program_id;
379 0 : if( exec_result==FD_EXECUTOR_INSTR_ERR_CUSTOM_ERR &&
380 0 : fd_executor_lookup_native_precompile_program( &ctx->txn_ctx->accounts[ program_id_idx ] )==NULL ) {
381 0 : effects->custom_err = ctx->txn_ctx->custom_err;
382 0 : }
383 0 : }
384 :
385 : /* Allocate space for captured accounts */
386 0 : ulong modified_acct_cnt = ctx->txn_ctx->accounts_cnt;
387 :
388 0 : fd_exec_test_acct_state_t * modified_accts =
389 0 : FD_SCRATCH_ALLOC_APPEND( l, alignof(fd_exec_test_acct_state_t),
390 0 : sizeof (fd_exec_test_acct_state_t) * modified_acct_cnt );
391 0 : if( FD_UNLIKELY( _l > output_end ) ) {
392 0 : fd_runtime_fuzz_instr_ctx_destroy( runner, ctx );
393 0 : return 0;
394 0 : }
395 0 : effects->modified_accounts = modified_accts;
396 0 : effects->modified_accounts_count = 0UL;
397 :
398 : /* Capture borrowed accounts */
399 :
400 0 : for( ulong j=0UL; j < ctx->txn_ctx->accounts_cnt; j++ ) {
401 0 : fd_txn_account_t * acc = &ctx->txn_ctx->accounts[j];
402 0 : if( !fd_txn_account_get_meta( acc ) ) {
403 0 : continue;
404 0 : }
405 :
406 0 : ulong modified_idx = effects->modified_accounts_count;
407 0 : assert( modified_idx < modified_acct_cnt );
408 :
409 0 : fd_exec_test_acct_state_t * out_acct = &effects->modified_accounts[ modified_idx ];
410 0 : memset( out_acct, 0, sizeof(fd_exec_test_acct_state_t) );
411 : /* Copy over account content */
412 :
413 0 : memcpy( out_acct->address, acc->pubkey, sizeof(fd_pubkey_t) );
414 0 : out_acct->lamports = fd_txn_account_get_lamports( acc );
415 0 : if( fd_txn_account_get_data_len( acc )>0UL ) {
416 0 : out_acct->data =
417 0 : FD_SCRATCH_ALLOC_APPEND( l, alignof(pb_bytes_array_t),
418 0 : PB_BYTES_ARRAY_T_ALLOCSIZE( fd_txn_account_get_data_len( acc ) ) );
419 0 : if( FD_UNLIKELY( _l > output_end ) ) {
420 0 : fd_runtime_fuzz_instr_ctx_destroy( runner, ctx );
421 0 : return 0UL;
422 0 : }
423 0 : out_acct->data->size = (pb_size_t)fd_txn_account_get_data_len( acc );
424 0 : fd_memcpy( out_acct->data->bytes, fd_txn_account_get_data( acc ), fd_txn_account_get_data_len( acc ) );
425 0 : }
426 :
427 0 : out_acct->executable = fd_txn_account_is_executable( acc );
428 0 : memcpy( out_acct->owner, fd_txn_account_get_owner( acc ), sizeof(fd_pubkey_t) );
429 :
430 0 : effects->modified_accounts_count++;
431 0 : }
432 :
433 : /* Capture return data */
434 0 : fd_txn_return_data_t * return_data = &ctx->txn_ctx->return_data;
435 0 : if( return_data->len>0UL ) {
436 0 : effects->return_data = FD_SCRATCH_ALLOC_APPEND(l, alignof(pb_bytes_array_t),
437 0 : PB_BYTES_ARRAY_T_ALLOCSIZE( return_data->len ) );
438 0 : if( FD_UNLIKELY( _l > output_end ) ) {
439 0 : fd_runtime_fuzz_instr_ctx_destroy( runner, ctx );
440 0 : return 0UL;
441 0 : }
442 0 : effects->return_data->size = (pb_size_t)return_data->len;
443 0 : fd_memcpy( effects->return_data->bytes, return_data->data, return_data->len );
444 0 : }
445 :
446 0 : ulong actual_end = FD_SCRATCH_ALLOC_FINI( l, 1UL );
447 0 : fd_runtime_fuzz_instr_ctx_destroy( runner, ctx );
448 :
449 0 : *output = effects;
450 0 : return actual_end - (ulong)output_buf;
451 :
452 0 : }
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