bug#39850: "du" command can not count some files
I don't see a bug there, as the files you say "du" is not counting have counts of zero.
bug#39850: "du" command can not count some files
$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:Ubuntu 19.10 Release:19.10 Codename: eoan $ uname -a Linux EliteBook 5.3.0-40-generic #32-Ubuntu SMP Fri Jan 31 20:24:34 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux $ du --version du (GNU coreutils)