diff --git a/Cargo.lock b/Cargo.lock
index 34e1501..fd41e07 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -689,7 +689,6 @@ version = "0.1.0"
 dependencies = [
  "arch",
  "devices",
- "irq_safety 0.1.1",
  "log",
  "sync",
 ]
diff --git a/Makefile b/Makefile
index 846b9e4..6e43cb3 100644
--- a/Makefile
+++ b/Makefile
@@ -106,7 +106,8 @@ fdt:
 	@qemu-system-riscv64 -M 128m -machine virt,dumpdtb=virt.out
 	fdtdump virt.out
 
-justrun: build
+justrun: fs-img
+	rust-objcopy --binary-architecture=$(ARCH) $(KERNEL_ELF) --strip-all -O binary $(KERNEL_BIN)
 	$(QEMU_EXEC)
 
 cv1811h-build: build
diff --git a/kernel/src/main.rs b/kernel/src/main.rs
index c0cfba5..3d6a37f 100644
--- a/kernel/src/main.rs
+++ b/kernel/src/main.rs
@@ -155,10 +155,6 @@ impl ArchInterface for ArchInterfaceImpl {
     fn main(hart_id: usize) {
         disable_irq();
         if hart_id == 0 {
-            // if hart_id != 0 {
-            //     loop {}
-            // }
-
             extern "C" {
                 fn start();
                 fn end();
@@ -225,7 +221,7 @@ impl ArchInterface for ArchInterfaceImpl {
             // enable_irq();
 
             loop {
-                // info!("aux core");
+                info!("aux core");
             }
         }
     }
diff --git a/modules/executor/src/task.rs b/modules/executor/src/task.rs
index 421251f..e4d8daa 100644
--- a/modules/executor/src/task.rs
+++ b/modules/executor/src/task.rs
@@ -6,14 +6,15 @@ use alloc::{
     sync::{Arc, Weak},
     vec::Vec,
 };
-use arch::addr::{PhysPage, VirtAddr, VirtPage};
-use arch::pagetable::{MappingFlags, MappingSize, PageTableWrapper};
-use arch::{TrapFrame, TrapFrameArgs, PAGE_SIZE};
+use arch::{
+    addr::{PhysPage, VirtAddr, VirtPage},
+    pagetable::{MappingFlags, MappingSize, PageTableWrapper},
+    {TrapFrame, TrapFrameArgs, PAGE_SIZE}
+};
 use frame_allocator::{ceil_div, frame_alloc_much, FrameTracker};
 use fs::File;
 use log::{debug, warn};
-use signal::REAL_TIME_SIGNAL_NUM;
-pub use signal::{SigAction, SigProcMask, SignalFlags};
+use signal::{REAL_TIME_SIGNAL_NUM, SigAction, SigProcMask, SignalFlags};
 use sync::{Mutex, MutexGuard, RwLock};
 use vfscore::OpenFlags;
 
diff --git a/modules/logging/Cargo.toml b/modules/logging/Cargo.toml
index afdf298..af1680c 100644
--- a/modules/logging/Cargo.toml
+++ b/modules/logging/Cargo.toml
@@ -10,4 +10,3 @@ log = "0.4"
 arch = { path = "../../arch" }
 devices = { path = "../devices" }
 sync = { path = "../sync" }
-irq_safety = { path = "../../crates/irq_safety" }
diff --git a/modules/logging/src/lib.rs b/modules/logging/src/lib.rs
index 5ecf3ff..c41eac1 100644
--- a/modules/logging/src/lib.rs
+++ b/modules/logging/src/lib.rs
@@ -1,13 +1,10 @@
 #![no_std]
 
-#[macro_use]
 extern crate alloc;
 
 use arch::{console_getchar, console_putchar};
 use core::fmt::{self, Write};
 use devices::MAIN_UART;
-use irq_safety::MutexIrqSafe;
-
 use log::{self, info, Level, LevelFilter, Log, Metadata, Record};
 
 pub struct Logger;
@@ -22,9 +19,6 @@ impl Log for Logger {
             return;
         }
 
-        static LOG_LOCK: MutexIrqSafe<()> = MutexIrqSafe::new(());
-        LOG_LOCK.lock();
-
         let file = record.file();
         let line = record.line();