Bug 654558

Summary:	musl hardened: Error relocating /usr/lib/syslog-ng/libtfgetent.so: getprotobynumber_r: symbol not found'
Product:	Gentoo Linux	Reporter:	Steve Arnold <nerdboy>
Component:	Current packages	Assignee:	Anthony Basile <blueness>
Status:	RESOLVED FIXED
Severity:	normal	CC:	hydrapolic
Priority:	Normal
Version:	unspecified
Hardware:	AMD64
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Steve Arnold archtester

2018-05-01 19:51:25 UTC

syslog-ng compiles fine on musl, but on startup we get a relocation error:

 * Checking your configfile (/etc/syslog-ng/syslog-ng.conf) ...
[2018-05-01T12:37:38.459225] Error opening plugin module; module='tfgetent', error='Error relocating /usr/lib/syslog-ng/libtfgetent.so: getprotobynumber_r: symbol not found'                                                             [ ok ]
 * Starting syslog-ng ...
[2018-05-01T12:37:38.549534] Error opening plugin module; module='tfgetent', error='Error relocating /usr/lib/syslog-ng/libtfgetent.so: getprotobynumber_r: symbol not found'                                                             [ ok ]

Seems very similar to Bug #531368 but I can't even find the referenced "musl" branch or overlay...

Portage 2.3.24 (python 3.5.5-final-0, default/linux/amd64/17.0/musl/hardened/selinux, gcc-6.4.0, musl-1.1.19, 4.14.29-gentoo-r1 x86_64)
=================================================================
System uname: Linux-4.14.29-gentoo-r1-x86_64-Intel-R-_Celeron-R-_CPU_N3160_@_1.60GHz-with-gentoo-2.4.1
KiB Mem:     1952496 total,    963352 free
KiB Swap:    1023996 total,   1023740 free
Head commit of repository gentoo: b204474e43f74c0a47c161af6fc7e2e53e8d05a3

sh bash 4.4_p12
ld GNU ld (Gentoo 2.29.1 p3) 2.29.1
app-shells/bash:          4.4_p12::gentoo
dev-lang/perl:            5.24.3-r1::gentoo
dev-lang/python:          2.7.14-r1::gentoo, 3.5.5::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:          0.35.5::gentoo
sys-apps/sandbox:         2.13::musl
sys-devel/autoconf:       2.13::gentoo, 2.69-r4::gentoo
sys-devel/automake:       1.15.1-r2::gentoo
sys-devel/binutils:       2.29.1-r1::gentoo
sys-devel/gcc:            6.4.0-r1::musl
sys-devel/gcc-config:     1.8-r1::gentoo
sys-devel/libtool:        2.4.6-r3::gentoo
sys-devel/make:           4.2.1::gentoo
sys-kernel/linux-headers: 4.13::musl (virtual/os-headers)
sys-libs/musl:            1.1.19::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: git
    sync-uri: git://git.gentoo.org/repo/gentoo.git
    priority: -1000

musl
    location: /var/lib/layman/musl
    masters: gentoo
    priority: 50

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-gentoo-linux-musl"
CFLAGS="-O2 -pipe -fno-diagnostics-color"
CHOST="x86_64-gentoo-linux-musl"
CONFIG_PROTECT="/etc /etc/grs/systems.conf /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/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -pipe -fno-diagnostics-color"
DISTDIR="/usr/portage/distfiles"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox selinux sesandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
INSTALL_MASK="charset.alias"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j64 -l30"
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="X acl amd64 bzip2 crypt cxx hardened iconv ipv6 mmx ncurses nls nptl openmp pam pcre pie readline seccomp selinux sse sse2 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="mmx mmxext sse sse2" ELIBC="musl" 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" 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 php7-0" POSTGRES_TARGETS="postgres9_5" PYTHON_SINGLE_TARGET="python3_5" PYTHON_TARGETS="python2_7 python3_5" RUBY_TARGETS="ruby22 ruby23" 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, EMERGE_DEFAULT_OPTS, LC_ALL, LINGUAS, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

Comment 1 Steve Arnold archtester

2018-05-04 01:51:55 UTC

The alpine "fix" is just:

rm -f  ${pkgdir}/usr/lib/$pkgname/libtfgetent.so

Comment 2 Anthony Basile gentoo-dev

2018-05-14 19:37:52 UTC

(In reply to Steve Arnold from comment #1)
> The alpine "fix" is just:
> 
> rm -f  ${pkgdir}/usr/lib/$pkgname/libtfgetent.so

i added this fix to the musl overlay.  i tried writting a wrapper for getprotobynumber_r() but its re-entrant and the version provided by musl is getprotobynumber() which is not.  this could cause serious issues on a multithreaded system, so it would have to be written just right or cause very hard to detect bugs.  why a re-entrant function is needed here is beyond me, but that's what upstream used.