Fix GH-17509: Apache parent and subrequest double bailout

Author: bukka

sapi/apache2handler/sapi_apache2.c

@@ -592,6 +592,7 @@ static int php_handler(request_rec *r)
 	apr_bucket *bucket;
 	apr_status_t rv;
 	request_rec * volatile parent_req = NULL;
+	JMP_BUF *parent_bailout = NULL;
 #ifdef ZTS
 	/* initial resource fetch */
 	(void)ts_resource(0);
@@ -665,6 +666,10 @@ static int php_handler(request_rec *r)
 		ap_add_cgi_vars(r);
 	}
 
+	if (parent_bailout == NULL && parent_req && EG(bailout)) {
+		parent_bailout = EG(bailout);
+	}
+
 zend_first_try {
 
 	if (ctx == NULL) {
@@ -749,6 +754,10 @@ zend_first_try {
 		ctx->r = parent_req;
 	}
 
+	if (parent_bailout) {
+		EG(bailout) = parent_bailout;
+	}
+
 	return OK;
 }