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Bug 793821 - x11-apps/xauth Slowing down the start of "X" + error accessing ".Xauthority" due to the coincidence of the file name with the hostname in the domain!
Summary: x11-apps/xauth Slowing down the start of "X" + error accessing ".Xauthority" ...
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: AMD64 Linux
: Normal normal (vote)
Assignee: Gentoo X packagers
Depends on:
Reported: 2021-06-02 06:52 UTC by Stas
Modified: 2021-06-08 19:33 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---

Attached error sequence files (console) (,3.35 KB, application/zip)
2021-06-04 05:47 UTC, Stas

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Description Stas 2021-06-02 06:52:27 UTC
The following behavior is observed:
Creating a link, directory, or file that matches the name of a host that is in the top-level domain causes "X" to start slowing down and fail to access ".Xauthority" ...
For example:
Hostname Dddd
"/etc/hosts": hostname Dddd.domainname Dddd dddd

Hostname in the domain: Dddd.domainname
If you create: file, directory, link ... with the name "Dddd"...
The specified error occurs and the start "X" is slowed down!
It also gives an error of some library, but now I can not specify exactly which one (I am writing from memory).
If you use a domain name of a different level, for example:
This error does not occur!
Also, this error does not occur if the host is not included in the domain!
If you change the hostname in the "hostname" file and restart the computer, "X" starts up a little faster, but with an additional error.
Checked this bug in Debian, it also exists there.  But the version is different: xauth-1.0.1
Comment 1 Stas 2021-06-02 06:58:02 UTC
This error occurs not only for the user but also for "root".
Comment 2 Jonas Stein gentoo-dev 2021-06-03 12:51:24 UTC
Sounds to me as it should be reported and fixed upstream.
Which version did you try?

We need to have all information at hand before ticket assignment. Please provide
* the complete build.log as attachment and
* paste the emerge info 
as described on

"It also gives an error of some library, but now I can not specify exactly which one (I am writing from memory)."

We (or upstream) really need a complete report with logs and the exact messages.

Please reopen this ticket (Status:UNCONFIRMED) afterwards.
Comment 3 Stas 2021-06-03 21:11:46 UTC
OK .... I restored it from a restore point and tomorrow I will try again to install "X" and other packages - I'll see what happens.
It's just that there was also a bug in Debian, which is why I reported ...
If on Gentoo it could be due to a compilation error, then on Debian it shouldn't be ...
Comment 4 Stas 2021-06-04 05:08:24 UTC
emerge --info x11-apps/xauth
Portage 3.0.18 (python 3.9.4-final-0, default/linux/amd64/17.1, gcc-10.2.0, glibc-2.32-r7, 5.10.27-gentoo x86_64)
                         System Settings
System uname: Linux-5.10.27-gentoo-x86_64-Intel-R-_Xeon-R-_CPU_E5-2695_v2_@_2.40GHz-with-glibc2.32
KiB Mem:    32790472 total,  31210792 free
KiB Swap:          0 total,         0 free
Timestamp of repository gentoo: Sat, 29 May 2021 19:30:01 +0000
Head commit of repository gentoo: 19db2de02c7f82573aab1fbf664d3a06d3d0faa7
sh bash 5.1_p8
ld GNU ld (Gentoo 2.35.2 p1) 2.35.2
app-shells/bash:          5.1_p8::gentoo
dev-java/java-config:     2.3.1::gentoo
dev-lang/perl:            5.32.1::gentoo
dev-lang/python:          3.9.4_p1::gentoo
dev-lang/rust:            1.51.0-r2::gentoo
dev-util/cmake:           3.18.5::gentoo
sys-apps/baselayout:      2.7::gentoo
sys-apps/openrc:          0.42.1-r1::gentoo
sys-apps/sandbox:         2.23::gentoo
sys-devel/autoconf:       2.13-r1::gentoo, 2.69-r5::gentoo
sys-devel/automake:       1.16.3-r1::gentoo
sys-devel/binutils:       2.35.2::gentoo
sys-devel/gcc:            10.2.0-r5::gentoo
sys-devel/gcc-config:     2.4::gentoo
sys-devel/libtool:        2.4.6-r6::gentoo
sys-devel/make:           4.3::gentoo
sys-kernel/linux-headers: 5.10::gentoo (virtual/os-headers)
sys-libs/glibc:           2.32-r7::gentoo

    location: /var/db/repos/gentoo
    sync-type: rsync
    sync-uri: rsync://
    priority: -1000
    sync-rsync-verify-max-age: 24
    sync-rsync-verify-jobs: 1
    sync-rsync-verify-metamanifest: yes

CFLAGS="-march=ivybridge -O2 -pipe"
CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/gnupg/qualified.txt"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-march=ivybridge -O2 -pipe"
FCFLAGS="-march=ivybridge -O2 -pipe"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-march=ivybridge -O2 -pipe"
GENTOO_MIRRORS=" rsync:// rsync://"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="ru ru_RU en en_US uk uk_UA"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git"
USE="X a52 aac acl acpi alsa amd64 berkdb bluetooth bluray bzip2 cdaudio cdda cdr cdrom cli cron crypt cuda dbus dri dts dvd dvda dvdr elogind faad fdk ffmpeg flac fontconfig fortran gdbm gpm gstreamer iconv ieee1394 ipv6 jpeg jpeg2k libglvnd libnotify libtirpc lm_sensors matroska mp3 mpeg mtp multilib ncurses nfs nls nptl nvidia opencl opengl openh264 openmp pam pcre png pulseaudio qemu qt5 readline scanner seccomp split-usr ssh ssl tcpd theora threads tiff truetype udev unicode usb v4l vaapi vdpau vorbis vpx vulkan x264 x265 xattr xvid xvmc zlib" ABI_X86="64" ADA_TARGET="gnat_2018" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx f16c mmx mmxext pclmul popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="efi-64" INPUT_DEVICES="evdev keyboard mouse wacom" KERNEL="linux" L10N="ru uk en" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LUA_SINGLE_TARGET="lua5-3" LUA_TARGETS="lua5-2 lua5-3 lua5-4" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-3 php7-4" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_9" PYTHON_TARGETS="python3_9" RUBY_TARGETS="ruby26" SANE_BACKENDS="plustek" USERLAND="GNU" VIDEO_CARDS="nvidia nouveau" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq proto steal rawnat logmark ipmark dhcpmac delude chaos account"

                        Package Settings

x11-apps/xauth-1.1::gentoo was built with the following:
USE="ipv6" ABI_X86="(64)"
Comment 5 Stas 2021-06-04 05:13:45 UTC
Logs NO!
ZioN ~ # ls  -al /var/tmp/portage/._unmerge_/
итого 0
drwxrwxr-x 1 portage portage  0 мая 31 11:37 .
drwxrwxr-x 1 portage portage 20 мая 31 11:37 ..

ZioN ~ # ls -al /var/tmp/portage/
итого 0
drwxrwxr-x 1 portage portage 20 мая 31 11:37 .
drwxrwxrwt 1 root    root    24 мая 20 17:43 ..
drwxrwxr-x 1 portage portage  0 мая 31 11:37 ._unmerge_
Comment 6 Stas 2021-06-04 05:47:35 UTC
Created attachment 713499 [details]
Attached error sequence files (console)

I am attaching files with the contents of the command sequence and the contents of the directory.
This is a fresh install of the system - installed last week.
True, and this time it does not give a library error! I recently reported this error, but my post has been deleted! There was a bug in the library in thet message!
Comment 7 Piotr Karbowski archtester Gentoo Infrastructure gentoo-dev Security 2021-06-08 19:33:52 UTC
Can you reproduce it if you start X not as root, but as regular unprivileged user?

Would be good to narrow it down of how xauth is executed when it goes bad, you can try to catch it out of /proc/ or even use sysdig and run in another tty 'sysdig -c spy_users'.

Once you are able to reproduce the xauth locking failure, we can debug it more.