diff --git a/kernel/aster-nix/src/syscall/madvise.rs b/kernel/aster-nix/src/syscall/madvise.rs
index 28b9566d9..4d9a794ec 100644
--- a/kernel/aster-nix/src/syscall/madvise.rs
+++ b/kernel/aster-nix/src/syscall/madvise.rs
@@ -21,11 +21,24 @@ pub fn sys_madvise(start: Vaddr, len: usize, behavior: i32) -> Result<SyscallRet
         MadviseBehavior::MADV_DONTNEED => {
             warn!("MADV_DONTNEED isn't implemented, do nothing for now.");
         }
+        MadviseBehavior::MADV_FREE => madv_free(start, len)?,
         _ => todo!(),
     }
     Ok(SyscallReturn::Return(0))
 }
 
+fn madv_free(start: Vaddr, len: usize) -> Result<()> {
+    debug_assert!(start % PAGE_SIZE == 0);
+    debug_assert!(len % PAGE_SIZE == 0);
+
+    let current = current!();
+    let root_vmar = current.root_vmar();
+    let advised_range = start..start + len;
+    let _ = root_vmar.destroy(advised_range);
+
+    Ok(())
+}
+
 #[repr(i32)]
 #[derive(Debug, Clone, Copy, TryFromInt)]
 #[allow(non_camel_case_types)]