After upgrading mit-krb5 to the latest testing version 1.16.2, the libkrb5.so.3.3 library started segfaulting while performing two factor tgt authentication using freeipa and sssd. Downgrade to the stable 1.16-r2 version resolved it. dmesg output: [419957.296554] krb5_child[5438]: segfault at 6e6f ip 00007ea8a217ffea sp 00007fff0d819580 error 4 in libkrb5.so.3.3[7ea8a2138000+d6000] sssd log: k5_mutex_lock: Received error 22 (Invalid argument) krb5_child: /var/tmp/portage/app-crypt/mit-krb5-1.16.2/work/krb5-1.16.2/src/include/k5-thread.h:376: k5_mutex_lock: Assertion `r == 0' failed. (Wed Dec 19 13:55:35 2018) [sssd[be[example.cz]]] [parse_krb5_child_response] (0x0020): message too short. (Wed Dec 19 13:55:35 2018) [sssd[be[example.cz]]] [krb5_auth_done] (0x0040): The krb5_child process returned an error. Please inspect the krb5_child.log file or the journal for more information (Wed Dec 19 13:55:35 2018) [sssd[be[example.cz]]] [krb5_auth_done] (0x0040): Could not parse child response [22]: Invalid argument (Wed Dec 19 13:55:35 2018) [sssd[be[example.cz]]] [krb5_auth_queue_done] (0x0040): krb5_auth_recv failed with: 22 (Wed Dec 19 13:55:35 2018) [sssd[be[example.cz]]] [ipa_pam_auth_handler_krb5_done] (0x0040): KRB5 auth failed [22]: Invalid argument (Wed Dec 19 13:55:35 2018) [sssd[be[example.cz]]] [child_sig_handler] (0x0020): child [12041] was terminated by signal [6]. (Wed Dec 19 13:55:35 2018) [sssd[pam]] [pam_dp_process_reply] (0x0200): received: [4 (System error)][example.cz] (Wed Dec 19 13:55:35 2018) [sssd[pam]] [pam_reply] (0x0200): pam_reply called with result [4]: System error. # emerge --info mit-krb5 Portage 2.3.40 (python 3.6.5-final-0, default/linux/amd64/17.0/no-multilib/hardened, gcc-7.3.0, glibc-2.26-r7, 4.14.62-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-4.14.62-gentoo-x86_64-AMD_Opteron-tm-_Processor_6376-with-gentoo-2.4.1 KiB Mem: 32922164 total, 27643564 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Wed, 19 Dec 2018 02:00:01 +0000 Head commit of repository gentoo: 162fe2cba46f502c012214612e5a2aff976d7a10 Head commit of repository virusfree: 625119baf4f4a07d6f544c9557668494cae3007f sh bash 4.4_p12 ld GNU ld (Gentoo 2.30 p2) 2.30.0 app-shells/bash: 4.4_p12::gentoo dev-lang/perl: 5.24.3-r1::gentoo dev-lang/python: 2.7.15::gentoo, 3.6.5::gentoo dev-util/cmake: 3.9.6::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.4.1-r2::gentoo sys-apps/openrc: 0.34.11::gentoo sys-apps/sandbox: 2.13::gentoo sys-devel/autoconf: 2.69-r4::gentoo sys-devel/automake: 1.15.1-r2::gentoo sys-devel/binutils: 2.30-r2::gentoo sys-devel/gcc: 7.3.0-r3::gentoo sys-devel/gcc-config: 1.8-r1::gentoo sys-devel/libtool: 2.4.6-r3::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 4.14::gentoo (virtual/os-headers) sys-libs/glibc: 2.26-r7::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 sync-rsync-verify-max-age: 24 sync-rsync-verify-jobs: 1 sync-rsync-extra-opts: sync-rsync-verify-metamanifest: yes localrepo location: /usr/local/portage masters: gentoo ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /var/qmail/alias /var/qmail/control" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--jobs=10 --load-average=60 --keep-going --with-bdeps=y" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j33" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" 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" PORTAGE_TMPDIR="/var/tmp" USE="acl amd64 bzip2 crypt cxx hardened iconv ipv6 libtirpc lm_sensors ncurses nls nptl openmp pam pax_kernel pcre pie qmail-spp readline seccomp ssl ssp unicode xattr xtpax zlib" ABI_X86="64" 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 plan sheets stage words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx fma4 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 xop" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="pc" INPUT_DEVICES="libinput keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6 php7-1" POSTGRES_TARGETS="postgres9_5 postgres10" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6" RUBY_TARGETS="ruby23 ruby24" USERLAND="GNU" VIDEO_CARDS="amdgpu fbdev intel nouveau radeon radeonsi vesa dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS ================================================================= Package Settings ================================================================= app-crypt/mit-krb5-1.16.2::gentoo was built with the following: USE="keyutils nls pkinit threads -doc -libressl -openldap (-selinux) -test -xinetd" CPU_FLAGS_X86="aes" CFLAGS="-march=native -O2 -pipe -fno-strict-aliasing -fno-strict-overflow" CXXFLAGS="-march=native -O2 -pipe -fno-strict-aliasing -fno-strict-overflow"
> krb5_child process returned an error. Please inspect the krb5_child.log file or the journal for more information What does it say?
