At a x86_64-system with large RAM 8 GByte and a Core 2 Duo processor I get Segmentation faults caused by GC_malloc. It see these, if I try to emerge w3m (see Bug http://bugs.gentoo.org/show_bug.cgi?id=194284 ) or if I try to start inkscape: root@condor:/root(35)# gdb inkscape ... (no debugging symbols found) (no debugging symbols found) Program received signal SIGSEGV, Segmentation fault. 0x00002b92b611524e in GC_malloc () from /usr/lib/libgc.so.1 At a second "similar" x86_64-system with 3GByte RAM and a AMD 64 Processor 3200+ processor I have no problems. Reproducible: Always Portage 2.1.3.12 (default-linux/amd64/2007.0, gcc-4.2.1, glibc-2.6.1-r0, 2.6.23-rc9 x86_64) ================================================================= System uname: 2.6.23-rc9 x86_64 Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz Timestamp of tree: Wed, 10 Oct 2007 05:00:09 +0000 distcc 2.18.3 x86_64-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] app-shells/bash: 3.2_p17-r1 dev-java/java-config: 1.3.7, 2.1.1 dev-lang/python: 2.4.4-r5, 2.5.1-r2 dev-python/pycrypto: 2.0.1-r6 sys-apps/baselayout: 1.12.10-r5 sys-apps/sandbox: 1.2.18.1 sys-devel/autoconf: 2.13, 2.61-r1 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10 sys-devel/binutils: 2.18-r1 sys-devel/gcc-config: 1.4.0-r3 sys-devel/libtool: 1.5.24 virtual/os-headers: 2.6.22-r2 ACCEPT_KEYWORDS="amd64 ~amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-march=nocona -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks fixpackages metadata-transfer sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" LINGUAS="de fr" MAKEOPTS="-j1" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --filter=H_**/files/digest-*" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/portage/local/layman/xeffects /usr/portage/local/layman/science /usr/local/portage /usr/local/portage/xeffects/trunk /usr/local/portage/xeffects/experimental /usr/local/sci" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X Xaw3d a52 aac acl acpi aiglx alsa amd64 amrr ao aotuv apache2 asf atlas auctex audacious audiofile automount bash-completion beagle berkdb bitmap-fonts blas bluetooth bonobo boo bzip2 cairo cdda cddb cdio cdparanoia cdr cgi chm cli corba cracklib crypt cups curl daap dbus device-mapper dga divx dlloader dmi dri dv dvb dvd dvdr dvi dxr3 dynagraph effects elf emacs emboss encode epiphany esd evo evolution examples exif expat fam fame ffmpeg fftw firefox fits flac fltk foomaticdb fortran fpx galago gdal gdbm geos gif gimp gimpprint ginac glade glitz gml gmp gnome gnuplot gnutls gphoto2 gpm graphviz grass gs gsl gsm gstreamer gtk guile hal hardened hddtemp hdf hdf5 hlapi iconv icq id3 imagemagick innodb ipv6 isdnlog ithreads jabber java jbig john jp2 jpeg jpeg2k kexi ladspa lame lapack latex lcms ldap libgda libsamplerate lirc lm_sensors lua lzo lzw mad math matroska midi mmx mmxext mng mod mono motif mozdevelop mozilla mozsvg mozxmlterm mp3 mp4live mpeg mpeg2 mplayer mudflap musicbrainz mysql mysqli nautilus ncurses neXt netcdf network nfs nls nntp nptl nptlonly ntfs numarray numeric nvidia ocaml octave odbc ogdi ogg ole opengl openmp pae pam pcre pdf perl plotutils png posix postgres pppd preview-latex proj python qhull quicktime readline reflection reiserfs rhythmbox rle rrdcgi rrdtool samba sdl session slang slp smp sndfile snmp sox speex spell spl sqlite sse sse2 ssl subtitles svg t1lib tcltk tcpd tetex theora threads thunderbird tidy tiff tk truetype truetype-fonts type1-fonts unicode userlocales utempter v4l2 vorbis wmf xattr xemacs xext xine xml xmlreader xmlrpc xorg xpm xv xvid xvmc zlib zvbi" 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" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route share shm softvol" ELIBC="glibc" INPUT_DEVICES="keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="de fr" USERLAND="GNU" VIDEO_CARDS="nv nvidia vesa fbdev" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
*** Bug 194284 has been marked as a duplicate of this bug. ***
what version of boehm-gc do you use? and could you try another version?
I am using since Aug 20 boehm-gc-7.0-r1. I just tested to downgrade to boehm-gc-6.8. And my problems disapear. No Segfault starting inkscape or emerge w3m. Juergen
After three hours of debugging I also realized that dev-libs/boehm-gc-7.0-r1 causes some bad crashes in sci-libs/Macaulay2 due to a segfaults in GC_MALLOC. It looks like that this badness is somehow due to some threading problem since it goes away with USE="-threads" (at least for me:) ). Juergen, can you give this a shot? Markus
I had the same problem, and used the USE="-threads" described below. It fixed my problem.
boehm-gc-7.1 in cvs now. please test again.
