diff --git a/kernel/src/ipc/signal_types.rs b/kernel/src/ipc/signal_types.rs
index 124c3e5d..b6781fd4 100644
--- a/kernel/src/ipc/signal_types.rs
+++ b/kernel/src/ipc/signal_types.rs
@@ -5,7 +5,7 @@ use core::{
     sync::atomic::AtomicI64,
 };
 
-use alloc::{boxed::Box, vec::Vec};
+use alloc::vec::Vec;
 use system_error::SystemError;
 
 use crate::{
@@ -60,7 +60,7 @@ pub const SIG_KERNEL_IGNORE_MASK: SigSet = Signal::into_sigset(Signal::SIGCONT)
 /// SignalStruct 在 pcb 中加锁
 #[derive(Debug)]
 pub struct SignalStruct {
-    inner: Box<InnerSignalStruct>,
+    inner: InnerSignalStruct,
 }
 
 #[derive(Debug)]
@@ -69,14 +69,14 @@ pub struct InnerSignalStruct {
     pub cnt: AtomicI64,
     /// 如果对应linux，这部分会有一个引用计数，但是没发现在哪里有用到需要计算引用的地方，因此
     /// 暂时删掉，不然这个Arc会导致其他地方的代码十分丑陋
-    pub handlers: [Sigaction; MAX_SIG_NUM],
+    pub handlers: Vec<Sigaction>,
 }
 
 impl SignalStruct {
     #[inline(never)]
     pub fn new() -> Self {
         let mut r = Self {
-            inner: Box::<InnerSignalStruct>::default(),
+            inner: InnerSignalStruct::default(),
         };
         let mut sig_ign = Sigaction::default();
         // 收到忽略的信号，重启系统调用
@@ -115,7 +115,7 @@ impl Default for InnerSignalStruct {
     fn default() -> Self {
         Self {
             cnt: Default::default(),
-            handlers: [Sigaction::default(); MAX_SIG_NUM],
+            handlers: vec![Sigaction::default(); MAX_SIG_NUM],
         }
     }
 }
diff --git a/kernel/src/process/fork.rs b/kernel/src/process/fork.rs
index c150af89..95b840ae 100644
--- a/kernel/src/process/fork.rs
+++ b/kernel/src/process/fork.rs
@@ -321,7 +321,7 @@ impl ProcessManager {
         }
 
         // log::debug!("Just copy sighand");
-        new_pcb.sig_struct_irqsave().handlers = current_pcb.sig_struct_irqsave().handlers;
+        new_pcb.sig_struct_irqsave().handlers = current_pcb.sig_struct_irqsave().handlers.clone();
 
         if clone_flags.contains(CloneFlags::CLONE_CLEAR_SIGHAND) {
             flush_signal_handlers(new_pcb.clone(), false);