diff --git a/dom/filesystem/FileSystemTaskBase.cpp b/dom/filesystem/FileSystemTaskBase.cpp
index e7636695dba5..b4bf4b5f0d28 100644
--- a/dom/filesystem/FileSystemTaskBase.cpp
+++ b/dom/filesystem/FileSystemTaskBase.cpp
@@ -84,7 +84,8 @@ class ErrorRunnable final : public CancelableRunnable
 {
 public:
   explicit ErrorRunnable(FileSystemTaskChildBase* aTask)
-    : mTask(aTask)
+    : CancelableRunnable("ErrorRunnable")
+    , mTask(aTask)
   {
     MOZ_ASSERT(aTask);
   }
diff --git a/dom/filesystem/FileSystemTaskBase.h b/dom/filesystem/FileSystemTaskBase.h
index 0435587711f8..3f9a82fe8bf9 100644
--- a/dom/filesystem/FileSystemTaskBase.h
+++ b/dom/filesystem/FileSystemTaskBase.h
@@ -187,6 +187,10 @@ private:
 class FileSystemTaskParentBase : public Runnable
 {
 public:
+  FileSystemTaskParentBase()
+    : Runnable("FileSystemTaskParentBase")
+  {}
+
   /*
    * Start the task. This must be called from the PBackground thread only.
    */
diff --git a/dom/filesystem/GetFilesHelper.cpp b/dom/filesystem/GetFilesHelper.cpp
index 9ae7a7bdc98c..0270d8d41c4f 100644
--- a/dom/filesystem/GetFilesHelper.cpp
+++ b/dom/filesystem/GetFilesHelper.cpp
@@ -20,6 +20,10 @@ namespace {
 class ReleaseRunnable final : public Runnable
 {
 public:
+  ReleaseRunnable()
+    : Runnable("ReleaseRunnable")
+  {}
+
   static void
   MaybeReleaseOnMainThread(nsTArray<RefPtr<Promise>>& aPromises,
                            nsTArray<RefPtr<GetFilesCallback>>& aCallbacks,
@@ -130,7 +134,8 @@ GetFilesHelper::Create(nsIGlobalObject* aGlobal,
 }
 
 GetFilesHelper::GetFilesHelper(nsIGlobalObject* aGlobal, bool aRecursiveFlag)
-  : GetFilesHelperBase(aRecursiveFlag)
+  : Runnable("GetFilesHelper")
+  , GetFilesHelperBase(aRecursiveFlag)
   , mGlobal(aGlobal)
   , mListingCompleted(false)
   , mErrorResult(NS_OK)
diff --git a/dom/filesystem/compat/CallbackRunnables.cpp b/dom/filesystem/compat/CallbackRunnables.cpp
index a4932f026866..e9cdfe81c5fd 100644
--- a/dom/filesystem/compat/CallbackRunnables.cpp
+++ b/dom/filesystem/compat/CallbackRunnables.cpp
@@ -26,7 +26,8 @@ namespace dom {
 
 EntryCallbackRunnable::EntryCallbackRunnable(FileSystemEntryCallback* aCallback,
                                              FileSystemEntry* aEntry)
-  : mCallback(aCallback)
+  : Runnable("EntryCallbackRunnable")
+  , mCallback(aCallback)
   , mEntry(aEntry)
 {
   MOZ_ASSERT(aCallback);
@@ -43,7 +44,8 @@ EntryCallbackRunnable::Run()
 ErrorCallbackRunnable::ErrorCallbackRunnable(nsIGlobalObject* aGlobalObject,
                                              ErrorCallback* aCallback,
                                              nsresult aError)
-  : mGlobal(aGlobalObject)
+  : Runnable("ErrorCallbackRunnable")
+  , mGlobal(aGlobalObject)
   , mCallback(aCallback)
   , mError(aError)
 {
@@ -61,7 +63,8 @@ ErrorCallbackRunnable::Run()
 }
 
 EmptyEntriesCallbackRunnable::EmptyEntriesCallbackRunnable(FileSystemEntriesCallback* aCallback)
-  : mCallback(aCallback)
+  : Runnable("EmptyEntriesCallbackRunnable")
+  , mCallback(aCallback)
 {
   MOZ_ASSERT(aCallback);
 }
diff --git a/dom/filesystem/compat/FileSystemFileEntry.cpp b/dom/filesystem/compat/FileSystemFileEntry.cpp
index 6302df06d2b8..1cdb7d92b97c 100644
--- a/dom/filesystem/compat/FileSystemFileEntry.cpp
+++ b/dom/filesystem/compat/FileSystemFileEntry.cpp
@@ -20,7 +20,8 @@ class FileCallbackRunnable final : public Runnable
 public:
   FileCallbackRunnable(FileCallback* aCallback, ErrorCallback* aErrorCallback,
                        File* aFile)
-    : mCallback(aCallback)
+    : Runnable("FileCallbackRunnable")
+    , mCallback(aCallback)
     , mErrorCallback(aErrorCallback)
     , mFile(aFile)
   {
diff --git a/dom/filesystem/compat/FileSystemRootDirectoryReader.cpp b/dom/filesystem/compat/FileSystemRootDirectoryReader.cpp
index 5b4a417527de..6fe5952199af 100644
--- a/dom/filesystem/compat/FileSystemRootDirectoryReader.cpp
+++ b/dom/filesystem/compat/FileSystemRootDirectoryReader.cpp
@@ -18,7 +18,8 @@ class EntriesCallbackRunnable final : public Runnable
 public:
   EntriesCallbackRunnable(FileSystemEntriesCallback* aCallback,
                           const Sequence<RefPtr<FileSystemEntry>>& aEntries)
-    : mCallback(aCallback)
+    : Runnable("EntriesCallbackRunnable")
+    , mCallback(aCallback)
     , mEntries(aEntries)
   {
     MOZ_ASSERT(aCallback);