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Check stack limit in fuzzer executor #19391

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Check stack limit in fuzzer executor #19391

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11 changes: 11 additions & 0 deletions sapi/fuzzer/fuzzer-execute-common.h
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Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,18 @@ static zend_always_inline void fuzzer_step(void) {
static void (*orig_execute_ex)(zend_execute_data *execute_data);

static void fuzzer_execute_ex(zend_execute_data *execute_data) {

#ifdef ZEND_CHECK_STACK_LIMIT
if (UNEXPECTED(zend_call_stack_overflowed(EG(stack_limit)))) {
zend_call_stack_size_error();
/* No opline was executed before exception */
EG(opline_before_exception) = NULL;
/* Fall through to handle exception below. */
}
#endif /* ZEND_CHECK_STACK_LIMIT */

const zend_op *opline = EX(opline);

while (1) {
fuzzer_step();
opline = ((opcode_handler_t) opline->handler)(execute_data, opline);
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