diff --git a/script/src/scheduler.rs b/script/src/scheduler.rs
index a00e01ce23..8f50dfe7e9 100644
--- a/script/src/scheduler.rs
+++ b/script/src/scheduler.rs
@@ -493,9 +493,6 @@ where
                                 .store64(&length_addr, &actual_length)?;
                             machine.machine.set_register(A0, SUCCESS as u64);
                         } else {
-                            // TODO: in the previous convention
-                            // https://github.com/nervosnetwork/rfcs/blob/master/rfcs/0009-vm-syscalls/0009-vm-syscalls.md#partial-loading
-                            // this will load data in to address 0 without notice. It is now marked as an error.
                             machine.machine.set_register(A0, INDEX_OUT_OF_BOUND as u64);
                         }
                         continue;
diff --git a/script/testdata/spawn_fuzzing b/script/testdata/spawn_fuzzing
index fd7c2dffb2..0c1602e09a 100755
Binary files a/script/testdata/spawn_fuzzing and b/script/testdata/spawn_fuzzing differ
diff --git a/script/testdata/spawn_fuzzing.c b/script/testdata/spawn_fuzzing.c
index 280286eb0f..7702717c0a 100644
--- a/script/testdata/spawn_fuzzing.c
+++ b/script/testdata/spawn_fuzzing.c
@@ -24,6 +24,7 @@ int extract_command(Data* data, Command* cmd) {
     if (id > 250) {
         cmd->id = SyscallClose;
         cmd->fd_index = (size_t)(id % 2);
+        data->offset += 1;
     } else if (id > 128) {
         if ((data->offset + 7) > data->total_size) {
             return -1;
@@ -31,6 +32,7 @@ int extract_command(Data* data, Command* cmd) {
         cmd->id = SyscallRead;
         memcpy(&cmd->buf_ptr, &data->ptr[data->offset + 1], 3);
         memcpy(&cmd->len_ptr, &data->ptr[data->offset + 4], 3);
+        data->offset += 7;
     } else {
         if ((data->offset + 7) > data->total_size) {
             return -1;
@@ -38,6 +40,7 @@ int extract_command(Data* data, Command* cmd) {
         cmd->id = SyscallWrite;
         memcpy(&cmd->buf_ptr, &data->ptr[data->offset + 1], 3);
         memcpy(&cmd->len_ptr, &data->ptr[data->offset + 4], 3);
+        data->offset += 7;
     }
     return 0;
 }