Also protect memory during opcache_compile_file

Author: nikic

ext/opcache/ZendAccelerator.c

@@ -1570,7 +1570,9 @@ static zend_persistent_script *opcache_compile_file(zend_file_handle *file_handl
 
 	/* check blacklist right after ensuring that file was opened */
 	if (file_handle->opened_path && zend_accel_blacklist_is_blacklisted(&accel_blacklist, ZSTR_VAL(file_handle->opened_path))) {
+		SHM_UNPROTECT();
 		ZCSG(blacklist_misses)++;
+		SHM_PROTECT();
 		*op_array_p = accelerator_orig_compile_file(file_handle, type);
 		return NULL;
 	}
@@ -1601,7 +1603,9 @@ static zend_persistent_script *opcache_compile_file(zend_file_handle *file_handl
 		}
 
 		if (ZCG(accel_directives).max_file_size > 0 && size > (size_t)ZCG(accel_directives).max_file_size) {
+			SHM_UNPROTECT();
 			ZCSG(blacklist_misses)++;
+			SHM_PROTECT();
 			*op_array_p = accelerator_orig_compile_file(file_handle, type);
 			return NULL;
 		}
@@ -2003,9 +2007,11 @@ zend_op_array *persistent_compile_file(zend_file_handle *file_handle, int type)
 			return accelerator_orig_compile_file(file_handle, type);
 		}
 
+		SHM_PROTECT();
 		HANDLE_UNBLOCK_INTERRUPTIONS();
 		persistent_script = opcache_compile_file(file_handle, type, key, &op_array);
 		HANDLE_BLOCK_INTERRUPTIONS();
+		SHM_UNPROTECT();
 
 		/* Try and cache the script and assume that it is returned from_shared_memory.
          * If it isn't compile_and_cache_file() changes the flag to 0