diff --git a/Kernel/MemoryManager.h b/Kernel/MemoryManager.h
index 4ed3ff66f7..0e749cbb53 100644
--- a/Kernel/MemoryManager.h
+++ b/Kernel/MemoryManager.h
@@ -16,6 +16,7 @@ enum class PageFaultResponse {
 };
 
 struct Zone : public Retainable<Zone> {
+    friend ByteBuffer procfs$mm();
 public:
     ~Zone();
     size_t size() const { return m_pages.size() * PAGE_SIZE; }
diff --git a/Kernel/ProcFileSystem.cpp b/Kernel/ProcFileSystem.cpp
index f7b7f3f5cb..225f55278f 100644
--- a/Kernel/ProcFileSystem.cpp
+++ b/Kernel/ProcFileSystem.cpp
@@ -121,10 +121,19 @@ void ProcFileSystem::removeProcess(Task& task)
 ByteBuffer procfs$mm()
 {
     InterruptDisabler disabler;
-    auto buffer = ByteBuffer::createUninitialized(1024);
+    size_t zonePageCount = 0;
+    for (auto* zone : MM.m_zones)
+        zonePageCount += zone->m_pages.size();
+    auto buffer = ByteBuffer::createUninitialized(1024 + 80 * MM.m_zones.size() + zonePageCount * 10);
     char* ptr = (char*)buffer.pointer();
     ptr += ksprintf(ptr, "Zone count: %u\n", MM.m_zones.size());
     ptr += ksprintf(ptr, "Free physical pages: %u\n", MM.m_freePages.size());
+    for (auto* zone : MM.m_zones) {
+        ptr += ksprintf(ptr, "Zone %p size: %u\n  ", zone, zone->size());
+        for (auto page : zone->m_pages)
+            ptr += ksprintf(ptr, "%x ", page);
+        ptr += ksprintf(ptr, "\n");
+    }
     buffer.trim(ptr - (char*)buffer.pointer());
     return buffer;
 }