[OE-core] pseudo: host user contamination

[Enrico Scholz]

Hello,

in some packages (e.g. ncurses or glibc) I get package-qa warnings due
to host user contamination; e.g.

| WARNING: ncurses-6.0+20170715-r0 do_package_qa: QA Issue: ncurses: /ncurses-terminfo-base/etc/terminfo/a/ansi is owned by uid 505, which is the same as the user running bitbake. This may be due to host contamination
| ncurses: /ncurses-terminfo-base/etc/terminfo/d/dumb is owned by uid 505, which is the same as the user running bitbake. This may be due to host contamination
| ...
| ncurses: /ncurses-terminfo-base/etc/terminfo/x/xterm-256color is owned by uid 505, which is the same as the user running bitbake. This may be due to host contamination [host-user-contaminated]


This is 100% reproducible by 'bitbake ncurses -c cleansstate && bitbake
ncurses'.


Pseudo log contains

| debug_logfile: fd 2
| pid 16096 [parent 16095], doing new pid setup and server start
| Setup complete, sending SIGUSR1 to pid 16095.
| path mismatch [2 links]: ino 382716451 db '/dev/shm/sem.mp-6eoy3v9n' req '/dev/shm/8JXYzj'.
| inode mismatch: '..../ncurses/6.0+20170715-r0/image/usr/share/terminfo/a/ansi' ino 39261519 in db, 39262517 in request.
| symlink mismatch: '..../ncurses/6.0+20170715-r0/image/usr/share/terminfo/a/ansi' [39261519] db mode 0100644, header mode 0120777 (unlinking db)

for all the reported files.and a lot of

| path mismatch [91 links]: ino 1605070 db ...

like messages for unrelated files (e.g  sysroot components).


Seen on recent rocko and master (1-2 weeks before).

System is Fedora 27 in a docker container; rootfs is on an overlaysfs,
recipes on a bind-mounted btrfs fs and build (TMPDIR) happens in an ext4
fs.  SELinux is active.



Is this issue known resp. does a solution exist?



Enrico
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