diff --git a/Makefile b/Makefile
index 7664aeb96..dbc7a49ea 100644
--- a/Makefile
+++ b/Makefile
@@ -167,7 +167,6 @@ log-monitor:
 update-submodules:
 	@echo "更新子模块"
 	@git submodule update --recursive --init
-	@git submodule foreach git pull origin master
 
 .PHONY: update-submodules-by-mirror
 update-submodules-by-mirror:
diff --git a/kernel/src/process/mod.rs b/kernel/src/process/mod.rs
index 0562903ce..b399c46e9 100644
--- a/kernel/src/process/mod.rs
+++ b/kernel/src/process/mod.rs
@@ -1688,8 +1688,8 @@ unsafe fn dealloc_from_kernel_space(vaddr: VirtAddr, paddr: PhysAddr) {
 }
 
 impl KernelStack {
-    pub const SIZE: usize = 0x4000;
-    pub const ALIGN: usize = 0x4000;
+    pub const SIZE: usize = 0x8000;
+    pub const ALIGN: usize = 0x8000;
 
     pub fn new() -> Result<Self, SystemError> {
         if cfg!(feature = "kstack_protect") {