Created attachment 413258 [details] backtrace Hello My father is suffering crashes on the x86 systems he has. I attach the backtrace and this is the emerge --info output. It fails even on safe mode Portage 2.2.20.1 (python 2.7.9-final-0, default/linux/x86/13.0/desktop/gnome/systemd, gcc-4.8.5, glibc-2.20-r2, 4.0.9-gentoo-nouveau i686) ================================================================= System Settings ================================================================= System uname: Linux-4.0.9-gentoo-nouveau-i686-Intel-R-_Pentium-R-_4_CPU_3.06GHz-with-gentoo-2.2 KiB Mem: 2070884 total, 510960 free KiB Swap: 3188864 total, 3066632 free Timestamp of repository gentoo: Fri, 25 Sep 2015 11:15:01 +0000 sh bash 4.3_p39 ld GNU ld (Gentoo 2.25.1 p1.1) 2.25.1 ccache version 3.1.9 [enabled] app-shells/bash: 4.3_p39::gentoo dev-java/java-config: 2.2.0::gentoo dev-lang/perl: 5.20.2::gentoo dev-lang/python: 2.7.9-r1::gentoo, 3.4.1::gentoo dev-util/ccache: 3.1.9-r4::gentoo dev-util/cmake: 3.2.2::gentoo dev-util/pkgconfig: 0.28-r2::gentoo sys-apps/baselayout: 2.2::gentoo sys-apps/openrc: 0.17::gentoo sys-apps/sandbox: 2.6-r1::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo sys-devel/automake: 1.11.6-r1::gentoo, 1.14.1::gentoo, 1.15::gentoo sys-devel/binutils: 2.25.1-r1::gentoo sys-devel/gcc: 4.8.5::gentoo sys-devel/gcc-config: 1.7.3::gentoo sys-devel/libtool: 2.4.6::gentoo sys-devel/make: 4.1-r1::gentoo sys-kernel/linux-headers: 3.18::gentoo (virtual/os-headers) sys-libs/glibc: 2.20-r2::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.europe.gentoo.org/gentoo-portage priority: -1000 AstroFloyd location: /var/lib/layman/AstroFloyd masters: gentoo priority: 0 condmat1 location: /usr/local/portage masters: gentoo priority: 1 ACCEPT_KEYWORDS="x86" ACCEPT_LICENSE="*" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=native -pipe -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /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/php/apache2-php5.6/ext-active/ /etc/php/cgi-php5.6/ext-active/ /etc/php/cli-php5.6/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-O2 -march=native -pipe -fomit-frame-pointer" DISTDIR="/usr/distfiles" EMERGE_DEFAULT_OPTS="--autounmask-write --keep-going --backtrack=180" FCFLAGS="-O2 -march=i686 -pipe" FEATURES="assume-digests binpkg-logs ccache config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -march=i686 -pipe" GENTOO_MIRRORS="http://ftp.heanet.ie/pub/gentoo/" LANG="es_ES.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j3" PKGDIR="/usr/local/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" PORTAGE_TMPDIR="/var/tmp" USE="X a52 aac acl acpi alsa apache2 berkdb branding bzip2 cairo cdda cddb cdr cleartype cli colord cracklib crypt css cups cxx dbus djvu dri dts dvd dvdr dvi eds emboss encode exif fam fat firefox flac foomaticdb fortran gdbm gif gimp glamor glitz gnome gnome-keyring gnome-online-accounts gpm gstreamer gtk iconv imap introspection ipod java jpeg jpeg2k kpathsea latex lcms libkms libnotify libsecret luatex lzma mad mbox mmx mmxext mng modules mp3 mp4 mpeg musepack musicbrainz nautilus ncurses network network-cron nls nptl ogg opengl openmp pam pango pch pdf png policykit pop ppds pulseaudio qt3support qt4 raw readline reiserfs sdl seccomp session smp spell sse sse2 ssl startup-notification svg systemd t1lib tcpd theora tiff tracker truetype udev udisks unicode upower usb vcd vdpau vorbis wxwidgets x264 x86 xattr xcb xcomposite xml xmp xv xvid zlib" ABI_X86="32" ALSA_CARDS="intel8x0" APACHE2_MODULES="actions alias auth_basic auth_digest authn_anon authn_dbd authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif so speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="es es_ES en_US en en_GB" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_4" RUBY_TARGETS="ruby20 ruby21" USERLAND="GNU" VIDEO_CARDS="nouveau" 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, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON ================================================================= Package Settings ================================================================= www-client/firefox-41.0-r1::gentoo was built with the following: USE="dbus gmp-autoupdate gstreamer jemalloc3 jit minimal pulseaudio startup-notification -bindist -custom-cflags -custom-optimization -debug -egl -gstreamer-0 -hardened (-neon) (-pgo) (-selinux) -system-cairo -system-icu -system-jpeg -system-libvpx -system-sqlite -test -wifi" LINGUAS="en_GB es_ES -af -ar -as -ast -be -bg -bn_BD -bn_IN -br -bs -ca -cs -cy -da -de -el -en_ZA -eo -es_AR -es_CL -es_MX -et -eu -fa -fi -fr -fy_NL -ga_IE -gd -gl -gu_IN -he -hi_IN -hr -hu -hy_AM -id -is -it -ja -kk -km -kn -ko -lt -lv -mai -mk -ml -mr -nb_NO -nl -nn_NO -or -pa_IN -pl -pt_BR -pt_PT -rm -ro -ru -si -sk -sl -son -sq -sr -sv_SE -ta -te -th -tr -uk -vi -xh -zh_CN -zh_TW" CFLAGS="-march=native -pipe -ggdb" CXXFLAGS="-march=native -pipe -ggdb"
This seems to be caused by gcc-4.8.5 update, as described at https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1471949 Downgrading back to 4.8.4 and rebuilding Firefox with it makes it launch successfully again.
CFLAGS="-ggdb" might not be helping things here, either.. I don't have an x86 image to test at the moment (might by the weekend) but I was rather surprised on the number of extra signals firefox throws up when emerged with -g in CFLAGS. At least two occur on firefox startup.
I can ask him to recompile without -ggdb to get a newer backtrace... but he will probably also test with the newly stabilized gcc-4.9 and maybe it fixes the problem too :/
(In reply to Pacho Ramos from comment #3) > I can ask him to recompile without -ggdb to get a newer backtrace... but he > will probably also test with the newly stabilized gcc-4.9 and maybe it fixes > the problem too :/ Well the bug in that ubuntu URL is actually something that was preset after gcc-4.8.2 and was apparently fixed upstream in both gcc-4.8.5 and gcc-4.9.3 (unless I misread), so I don't think switching to 4.9 is going to make any difference here unfortunately.
This is actually caused by cairo being built with xcb support. Disable and test again.
(In reply to Jory A. Pratt from comment #5) > This is actually caused by cairo being built with xcb support. Disable and > test again. And how this is related to builds with -system-cairo, which segfault too just after start or after trying to open new tab / restore previous tabs after crass? (In reply to Ian Stakenvicius from comment #4) > Well the bug in that ubuntu URL is actually something that was preset after > gcc-4.8.2 and was apparently fixed upstream in both gcc-4.8.5 and gcc-4.9.3 > (unless I misread), so I don't think switching to 4.9 is going to make any > difference here unfortunately. As stated in comment there ( https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1471949/comments/9 ) there's a bug somewhere in ubuntu patches after 4.8.2, and there's (another?) bug in upstream gcc 4.8.5, which was fixed in git sometime after that release.
I have just got the confirmation that the two x86 machines affected are now fixed when compiling with gcc-4.9.3 :D Thanks!
Thanks for the heads up! Just adding the gcc note to the subject line.
