diff --git a/Kernel/Devices/FullDevice.cpp b/Kernel/Devices/FullDevice.cpp
index 6aab209181..855d6a85f3 100644
--- a/Kernel/Devices/FullDevice.cpp
+++ b/Kernel/Devices/FullDevice.cpp
@@ -8,10 +8,16 @@
 #include <AK/Memory.h>
 #include <AK/StdLibExtras.h>
 #include <Kernel/Arch/x86/CPU.h>
+#include <Kernel/Panic.h>
 #include <LibC/errno_numbers.h>
 
 namespace Kernel {
 
+UNMAP_AFTER_INIT NonnullRefPtr<FullDevice> FullDevice::must_create()
+{
+    return adopt_ref_if_nonnull(new FullDevice).release_nonnull();
+}
+
 UNMAP_AFTER_INIT FullDevice::FullDevice()
     : CharacterDevice(1, 7)
 {
diff --git a/Kernel/Devices/FullDevice.h b/Kernel/Devices/FullDevice.h
index 037b4c7308..2fb8d4e785 100644
--- a/Kernel/Devices/FullDevice.h
+++ b/Kernel/Devices/FullDevice.h
@@ -13,7 +13,7 @@ namespace Kernel {
 class FullDevice final : public CharacterDevice {
     AK_MAKE_ETERNAL
 public:
-    FullDevice();
+    static NonnullRefPtr<FullDevice> must_create();
     virtual ~FullDevice() override;
 
     // ^Device
@@ -21,6 +21,8 @@ public:
     virtual String device_name() const override { return "full"; }
 
 private:
+    FullDevice();
+
     // ^CharacterDevice
     virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
diff --git a/Kernel/Devices/MemoryDevice.cpp b/Kernel/Devices/MemoryDevice.cpp
index 37c05bf663..5e644a9d21 100644
--- a/Kernel/Devices/MemoryDevice.cpp
+++ b/Kernel/Devices/MemoryDevice.cpp
@@ -8,11 +8,17 @@
 #include <AK/Memory.h>
 #include <AK/StdLibExtras.h>
 #include <Kernel/Arch/PC/BIOS.h>
+#include <Kernel/Panic.h>
 #include <Kernel/VM/AnonymousVMObject.h>
 #include <Kernel/VM/TypedMapping.h>
 
 namespace Kernel {
 
+UNMAP_AFTER_INIT NonnullRefPtr<MemoryDevice> MemoryDevice::must_create()
+{
+    return adopt_ref_if_nonnull(new MemoryDevice).release_nonnull();
+}
+
 UNMAP_AFTER_INIT MemoryDevice::MemoryDevice()
     : CharacterDevice(1, 1)
 {
diff --git a/Kernel/Devices/MemoryDevice.h b/Kernel/Devices/MemoryDevice.h
index da08e9e43f..688d81275b 100644
--- a/Kernel/Devices/MemoryDevice.h
+++ b/Kernel/Devices/MemoryDevice.h
@@ -16,7 +16,7 @@ namespace Kernel {
 class MemoryDevice final : public CharacterDevice {
     AK_MAKE_ETERNAL
 public:
-    MemoryDevice();
+    static NonnullRefPtr<MemoryDevice> must_create();
     ~MemoryDevice();
 
     virtual KResultOr<Region*> mmap(Process&, FileDescription&, const Range&, u64 offset, int prot, bool shared) override;
@@ -26,6 +26,7 @@ public:
     virtual String device_name() const override { return "mem"; };
 
 private:
+    MemoryDevice();
     virtual const char* class_name() const override { return "MemoryDevice"; }
     virtual bool can_read(const FileDescription&, size_t) const override { return true; }
     virtual bool can_write(const FileDescription&, size_t) const override { return false; }
diff --git a/Kernel/Devices/RandomDevice.cpp b/Kernel/Devices/RandomDevice.cpp
index 1af96d818c..b2f0cf5e4b 100644
--- a/Kernel/Devices/RandomDevice.cpp
+++ b/Kernel/Devices/RandomDevice.cpp
@@ -5,10 +5,16 @@
  */
 
 #include <Kernel/Devices/RandomDevice.h>
+#include <Kernel/Panic.h>
 #include <Kernel/Random.h>
 
 namespace Kernel {
 
+UNMAP_AFTER_INIT NonnullRefPtr<RandomDevice> RandomDevice::must_create()
+{
+    return adopt_ref_if_nonnull(new RandomDevice).release_nonnull();
+}
+
 UNMAP_AFTER_INIT RandomDevice::RandomDevice()
     : CharacterDevice(1, 8)
 {
diff --git a/Kernel/Devices/RandomDevice.h b/Kernel/Devices/RandomDevice.h
index 2d98a220ff..e553b5dc8c 100644
--- a/Kernel/Devices/RandomDevice.h
+++ b/Kernel/Devices/RandomDevice.h
@@ -13,7 +13,7 @@ namespace Kernel {
 class RandomDevice final : public CharacterDevice {
     AK_MAKE_ETERNAL
 public:
-    RandomDevice();
+    static NonnullRefPtr<RandomDevice> must_create();
     virtual ~RandomDevice() override;
 
     // ^Device
@@ -21,6 +21,8 @@ public:
     virtual String device_name() const override { return "random"; }
 
 private:
+    RandomDevice();
+
     // ^CharacterDevice
     virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
diff --git a/Kernel/Devices/SerialDevice.cpp b/Kernel/Devices/SerialDevice.cpp
index ef41d620be..e97f2059eb 100644
--- a/Kernel/Devices/SerialDevice.cpp
+++ b/Kernel/Devices/SerialDevice.cpp
@@ -7,9 +7,37 @@
 
 #include <Kernel/Devices/SerialDevice.h>
 #include <Kernel/IO.h>
+#include <Kernel/Panic.h>
 
 namespace Kernel {
 
+#define SERIAL_COM1_ADDR 0x3F8
+#define SERIAL_COM2_ADDR 0x2F8
+#define SERIAL_COM3_ADDR 0x3E8
+#define SERIAL_COM4_ADDR 0x2E8
+
+UNMAP_AFTER_INIT NonnullRefPtr<SerialDevice> SerialDevice::must_create(size_t com_number)
+{
+    SerialDevice* device = nullptr;
+    switch (com_number) {
+    case 0:
+        device = new SerialDevice(IOAddress(SERIAL_COM1_ADDR), 64);
+        break;
+    case 1:
+        device = new SerialDevice(IOAddress(SERIAL_COM2_ADDR), 65);
+        break;
+    case 2:
+        device = new SerialDevice(IOAddress(SERIAL_COM3_ADDR), 66);
+        break;
+    case 3:
+        device = new SerialDevice(IOAddress(SERIAL_COM4_ADDR), 67);
+        break;
+    default:
+        break;
+    }
+    return adopt_ref_if_nonnull(device).release_nonnull();
+}
+
 UNMAP_AFTER_INIT SerialDevice::SerialDevice(IOAddress base_addr, unsigned minor)
     : CharacterDevice(4, minor)
     , m_base_addr(base_addr)
diff --git a/Kernel/Devices/SerialDevice.h b/Kernel/Devices/SerialDevice.h
index 71a860000a..fc98872586 100644
--- a/Kernel/Devices/SerialDevice.h
+++ b/Kernel/Devices/SerialDevice.h
@@ -11,15 +11,11 @@
 
 namespace Kernel {
 
-#define SERIAL_COM1_ADDR 0x3F8
-#define SERIAL_COM2_ADDR 0x2F8
-#define SERIAL_COM3_ADDR 0x3E8
-#define SERIAL_COM4_ADDR 0x2E8
-
 class SerialDevice final : public CharacterDevice {
     AK_MAKE_ETERNAL
 public:
-    SerialDevice(IOAddress base_addr, unsigned minor);
+    static NonnullRefPtr<SerialDevice> must_create(size_t com_number);
+
     virtual ~SerialDevice() override;
 
     // ^CharacterDevice
@@ -113,6 +109,8 @@ public:
 private:
     friend class PCISerialDevice;
 
+    SerialDevice(IOAddress base_addr, unsigned minor);
+
     // ^CharacterDevice
     virtual const char* class_name() const override { return "SerialDevice"; }
 
diff --git a/Kernel/Devices/ZeroDevice.cpp b/Kernel/Devices/ZeroDevice.cpp
index 1f3fddbf07..45cbf9f802 100644
--- a/Kernel/Devices/ZeroDevice.cpp
+++ b/Kernel/Devices/ZeroDevice.cpp
@@ -7,9 +7,15 @@
 #include "ZeroDevice.h"
 #include <AK/Memory.h>
 #include <AK/StdLibExtras.h>
+#include <Kernel/Panic.h>
 
 namespace Kernel {
 
+UNMAP_AFTER_INIT NonnullRefPtr<ZeroDevice> ZeroDevice::must_create()
+{
+    return adopt_ref_if_nonnull(new ZeroDevice).release_nonnull();
+}
+
 UNMAP_AFTER_INIT ZeroDevice::ZeroDevice()
     : CharacterDevice(1, 5)
 {
diff --git a/Kernel/Devices/ZeroDevice.h b/Kernel/Devices/ZeroDevice.h
index 861a7d40dd..df3699314a 100644
--- a/Kernel/Devices/ZeroDevice.h
+++ b/Kernel/Devices/ZeroDevice.h
@@ -13,7 +13,7 @@ namespace Kernel {
 class ZeroDevice final : public CharacterDevice {
     AK_MAKE_ETERNAL
 public:
-    ZeroDevice();
+    static NonnullRefPtr<ZeroDevice> must_create();
     virtual ~ZeroDevice() override;
 
     // ^Device
@@ -21,6 +21,7 @@ public:
     virtual String device_name() const override { return "zero"; }
 
 private:
+    ZeroDevice();
     // ^CharacterDevice
     virtual KResultOr<size_t> read(FileDescription&, u64, UserOrKernelBuffer&, size_t) override;
     virtual KResultOr<size_t> write(FileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
diff --git a/Kernel/init.cpp b/Kernel/init.cpp
index 9f057a3e77..4a7529b8f2 100644
--- a/Kernel/init.cpp
+++ b/Kernel/init.cpp
@@ -158,10 +158,10 @@ extern "C" UNMAP_AFTER_INIT [[noreturn]] void init()
 
     NullDevice::initialize();
     if (!get_serial_debug())
-        new SerialDevice(IOAddress(SERIAL_COM1_ADDR), 64);
-    new SerialDevice(IOAddress(SERIAL_COM2_ADDR), 65);
-    new SerialDevice(IOAddress(SERIAL_COM3_ADDR), 66);
-    new SerialDevice(IOAddress(SERIAL_COM4_ADDR), 67);
+        (void)SerialDevice::must_create(0).leak_ref();
+    (void)SerialDevice::must_create(1).leak_ref();
+    (void)SerialDevice::must_create(2).leak_ref();
+    (void)SerialDevice::must_create(3).leak_ref();
 
     VMWareBackdoor::the(); // don't wait until first mouse packet
     HIDManagement::initialize();
@@ -243,10 +243,10 @@ void init_stage2(void*)
     NetworkingManagement::the().initialize();
     Syscall::initialize();
 
-    new MemoryDevice;
-    new ZeroDevice;
-    new FullDevice;
-    new RandomDevice;
+    (void)MemoryDevice::must_create().leak_ref();
+    (void)ZeroDevice::must_create().leak_ref();
+    (void)FullDevice::must_create().leak_ref();
+    (void)RandomDevice::must_create().leak_ref();
     PTYMultiplexer::initialize();
     SB16::detect();