Properly report DiskAccessDenied exception

It you do Error.new the stack trace is not being attached,
so we need to explicitly raise it

lib/gitlab/pages/settings.rb

@@ -6,7 +6,7 @@ module Gitlab
       DiskAccessDenied = Class.new(StandardError)
 
       def path
-        ::Gitlab::ErrorTracking.track_exception(DiskAccessDenied.new) if disk_access_denied?
+        report_denied_disk_access
 
         super
       end
@@ -22,6 +22,12 @@ module Gitlab
 
         ::Gitlab::Runtime.web_server? && !::Gitlab::Runtime.test_suite?
       end
+
+      def report_denied_disk_access
+        raise DiskAccessDenied if disk_access_denied?
+      rescue => e
+        ::Gitlab::ErrorTracking.track_exception(e)
+      end
     end
   end
 end