diff --git a/kernel/src/ipc/semaphore/system_v/sem.rs b/kernel/src/ipc/semaphore/system_v/sem.rs
index 765f03c65..bc8d9ad20 100644
--- a/kernel/src/ipc/semaphore/system_v/sem.rs
+++ b/kernel/src/ipc/semaphore/system_v/sem.rs
@@ -166,7 +166,7 @@ impl Semaphore {
         );
     }
 
-    fn sem_op(&self, sem_buf: SemBuf, timeout: Option<Duration>, ctx: &Context) -> Result<()> {
+    fn sem_op(&self, sem_buf: &SemBuf, timeout: Option<Duration>, ctx: &Context) -> Result<()> {
         let mut val = self.val.lock();
         let sem_op = sem_buf.sem_op;
         let current_pid = ctx.process.pid();
@@ -208,7 +208,7 @@ impl Semaphore {
         let (waiter, waker) = Waiter::new_pair();
         let status = Arc::new(AtomicStatus::new(Status::Pending));
         let pending_op = Box::new(PendingOp {
-            sem_buf,
+            sem_buf: *sem_buf,
             status: status.clone(),
             waker: waker.clone(),
             process: ctx.posix_thread.weak_process(),
@@ -303,7 +303,7 @@ impl Semaphore {
 
 pub fn sem_op(
     sem_id: key_t,
-    sem_buf: SemBuf,
+    sem_buf: &SemBuf,
     timeout: Option<Duration>,
     ctx: &Context,
 ) -> Result<()> {
diff --git a/kernel/src/syscall/semop.rs b/kernel/src/syscall/semop.rs
index 2e71fc7bf..7c07de87a 100644
--- a/kernel/src/syscall/semop.rs
+++ b/kernel/src/syscall/semop.rs
@@ -61,7 +61,7 @@ fn do_sys_semtimedop(
         let sem_buf =
             CurrentUserSpace::get().read_val::<SemBuf>(tsops + size_of::<SemBuf>() * i)?;
 
-        sem_op(sem_id, sem_buf, timeout, ctx)?;
+        sem_op(sem_id, &sem_buf, timeout, ctx)?;
     }
 
     Ok(SyscallReturn::Return(0))