fix: Fix stack related errors (#1167)

* fix: Fix stack related errors

Increase kernel stack to 32k.
Add a stack overflow test.
Remove manual placement of guard pages

Signed-off-by: Godones <chenlinfeng25@outlook.com>

* fix: update userstack comments

Signed-off-by: Godones <chenlinfeng25@outlook.com>

---------

Signed-off-by: Godones <chenlinfeng25@outlook.com>

user/apps/test_stack/.gitignore

@@ -0,0 +1 @@
+test_stack

user/apps/test_stack/Makefile

@@ -0,0 +1,20 @@
+ifeq ($(ARCH), x86_64)
+	CROSS_COMPILE=x86_64-linux-musl-
+else ifeq ($(ARCH), riscv64)
+	CROSS_COMPILE=riscv64-linux-musl-
+endif
+
+CC=$(CROSS_COMPILE)gcc
+
+.PHONY: all
+all: main.c
+	$(CC) -static -o test_stack main.c
+
+.PHONY: install clean
+install: all
+	mv test_stack $(DADK_CURRENT_BUILD_DIR)/test_stack
+
+clean:
+	rm test_stack *.o
+
+fmt:

user/apps/test_stack/main.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+void overflow(int depth) {
+  char buffer[1024 * 1024]; // 占用一些栈空间
+  printf("Recursion depth: %d\n", depth);
+  overflow(depth + 1); // 递归调用
+}
+
+int main() {
+  overflow(1);
+  printf("This line will not be printed due to stack overflow.\n");
+  return 0;
+}