Bug 680422 – net-im/skypeforlinux-8.34.0.78 with sys-apps/dbus-1.12.12-r1 CFLAGS='-march=native' on Ryzen x2700 - segmentation fault at 18 ip ... sp ... error 4 in libdbus-1.so.3.19.9

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description DaggyStyle 2019-03-15 07:03:16 UTC]

when I start skypeforlinux, I get this segfault:
[   49.084696] skypeforlinux[6081]: segfault at 18 ip 00007fba0274ec68 sp 00007fffa927e330 error 4 in libdbus-1.so.3.19.9[7fba02734000+47000]
[   49.084700] Code: 47 28 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 f6 47 01 01 74 0a 31 c0 c3 0f 1f 80 00 00 00 00 53 48 8b 47 28 48 89 fb <48> 8b 40 18 48 85 c0 74 06 ff d0 85 c0 75 19 8b 73 10 48 8b 7b 08

emerge --info:
Portage 2.3.62 (python 3.6.5-final-0, default/linux/amd64/17.0/desktop/plasma, gcc-8.3.0, glibc-2.27-r6, 5.0.1-gentoo x86_64)
=================================================================
System uname: Linux-5.0.1-gentoo-x86_64-AMD_Ryzen_7_2700X_Eight-Core_Processor-with-gentoo-2.6
KiB Mem:    16414132 total,  10848956 free
KiB Swap:   16437244 total,  16437244 free
Head commit of repository gentoo: 836d043ce1fb70a04793050c18bffca61fbbb0ea

sh bash 4.4_p23-r1
ld GNU ld (Gentoo 2.30 p5) 2.30.0
app-shells/bash:          4.4_p23-r1::gentoo
dev-java/java-config:     2.2.0-r4::gentoo
dev-lang/perl:            5.26.2::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:      2.6-r1::gentoo
sys-apps/openrc:          0.38.3-r1::gentoo
sys-apps/sandbox:         2.13::gentoo
sys-devel/autoconf:       2.13-r1::gentoo, 2.69-r4::gentoo
sys-devel/automake:       1.13.4-r2::gentoo, 1.16.1-r1::gentoo
sys-devel/binutils:       2.30-r4::gentoo
sys-devel/gcc:            8.3.0::gentoo
sys-devel/gcc-config:     2.0::gentoo
sys-devel/libtool:        2.4.6-r3::gentoo
sys-devel/make:           4.2.1-r4::gentoo
sys-kernel/linux-headers: 4.14-r1::gentoo (virtual/os-headers)
sys-libs/glibc:           2.27-r6::gentoo
Repositories:

gentoo
    location: /mnt/portage/tree/official
    sync-type: git
    sync-uri: https://anongit.gentoo.org/git/repo/gentoo.git
    priority: -1000

Utopia_Platinia
    location: /mnt/portage/tree/overlay
    masters: gentoo kde
    priority: 0

kde
    location: /var/lib/layman/kde
    sync-type: laymansync
    sync-uri: https://anongit.gentoo.org/git/proj/kde.git
    masters: gentoo
    priority: 50

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* -@EULA FraunhoferFDK dlj-1.1 skype-4.0.0.7-copyright Broadcom PUEL googleearth LOKI-EULA AdobeFlash-11.x RTCW-ETEULA ut2003 MakeMKV-EULA Q3AEULA TeamViewer RAR OPERA-2014 Nero-AAC-EULA Oracle-BCLA-JavaSE Vivaldi"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe -march=native"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /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="-O2 -pipe -march=native"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--keep-going --quiet-build=n"
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 -march=native"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs clean-logs collision-protect 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 sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userpriv usersandbox usersync"
FFLAGS="-O2 -pipe -march=native"
GENTOO_MIRRORS="ftp://ftp.gtlib.gatech.edu/pub/gentoo ftp://ftp.ussg.iu.edu/pub/linux/gentoo"
LANG="en_us.US-ASCII"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="en es"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_EXTRA_OPTS="--timeout=180"
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 a52 aac acl acpi activities alsa amd64 berkdb branding bzip2 cairo cdda cdr cli crypt cryptsetup cups cxx dbus declarative dri drm dts dvd dvdr elogind emboss encode exif fam ffmpeg flac fortran gdbm gif glamor gpm gtk iconv ipv6 java joystick jpeg kde kipi kwallet lcms ldap libnotify libtirpc lm_sensors lto lvm mad matroska mng mp3 mp4 mpeg multilib ncurses nls nptl nsplugin ogg opencl opengl openmp pam pango pcre pdf pdfimport phonon physics plasma png policykit postproc ppds python qml qt5 readline samba sdl seccomp sound spell sqlite ssl startup-notification svg system-harfbuzz system-heimdal system-icu system-jpeg system-jsoncpp system-libevent system-libvpx system-llvm system-sqlite system-webp tcpd tiff truetype udev udisks unicode upower usb vaapi vdpau vlc vorbis vulkan widgets wxwidgets x264 x265 xattr xcb xcomposite xml xv xvid 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 sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 f16c fma3 mmx mmxext pclmul popcnt sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3" 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="efi-64 pc" INPUT_DEVICES="evdev" KERNEL="linux" L10N="he es" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LLVM_TARGETS="AArch64 ARM AMDGPU" NETBEANS_MODULES="apisupport cnd groovy gsf harness ide identity j2ee java mobility nb php profiler soa visualweb webcommon websvccommon xml" 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" QEMU_SOFTMMU_TARGETS="x86_64 arm aarch64" QEMU_USER_TARGETS="x86_64 arm aarch64" RUBY_TARGETS="ruby21 ruby22 ruby23" SANE_BACKENDS="hp" USERLAND="GNU" VIDEO_CARDS="v4l amdgpu radeonsi radeon" 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, MAKEOPTS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS

=================================================================
                        Package Settings
=================================================================

sys-apps/dbus-1.12.12-r1::gentoo was built with the following:
USE="X elogind -debug -doc (-selinux) -static-libs -systemd -test -user-session" ABI_X86="(64) -32 (-x32)"
CFLAGS="-O2 -pipe -march=native -rdynamic"
CXXFLAGS="-O2 -pipe -march=native -rdynamic"


net-im/skypeforlinux-8.34.0.78::gentoo was built with the following:
USE="-pax_kernel" ABI_X86="(64)"

if I change the CFLAGS from "-O2 -pipe -march=native" to "-O2 -pipe -march=znver1" it works well.

[Comment 1 DaggyStyle 2019-03-15 07:04:03 UTC]

Created attachment 569144 [details]
output of gcc -march=native -Q --help=target

[Comment 2 Gino McCarty 2019-03-19 22:36:01 UTC]

hey,

this doesn't look like an ebuild problem to me. also this is a closed source binary that i can't make much inference from.

But, you should try doing both -march=native and -mtune=native together in your CFLAGS and CXXFLAGS

[Comment 3 DaggyStyle 2019-03-23 19:42:01 UTC]

tried that, still segfaults

[Comment 4 DaggyStyle 2019-04-12 09:38:17 UTC]

why have you marked it as fixed? I still have it with skype 8.34.0.78-r1

[Comment 5 DaggyStyle 2019-05-25 07:23:49 UTC]

with sys-devel/gcc-9.1.0, sys-apps/dbus-1.12.14 and net-im/skypeforlinux-8.45.0.41, this bug is resolved.