Hello Masahiro, It seems that commit a9a49c2ad9b9b8 (linux-next) breaks ./scripts/tags.sh on my system. It scans, basically, my entire drive now (including the root partition):
$ ./scripts/tags.sh tags find: ‘/arch/*.[chS]/’: No such file or directory find: ‘/include’: No such file or directory find: ‘/boot/lost+found’: Permission denied find: ‘/etc/pacman.d/gnupg/openpgp-revocs.d’: Permission denied find: ‘/etc/pacman.d/gnupg/private-keys-v1.d’: Permission denied find: ‘/etc/pacman.d/gnupg/crls.d’: Permission denied find: ‘/etc/polkit-1/rules.d’: Permission denied find: ‘/etc/sudoers.d’: Permission denied find: ‘/etc/audisp/plugins.d’: Permission denied find: ‘/home/lost+found’: Permission denied find: ‘/home/sk’: Permission denied find: ‘/lost+found’: Permission denied ctags: Warning: --extra option is obsolete; use --extras instead [..] With reverted a9a49c2ad9b9b8 tags scans kernel source tree only ./scripts/tags.sh tags find: ‘arch/*.[chS]/’: No such file or directory ctags: Warning: --extra option is obsolete; use --extras instead [..] -ss