I've nailed it down to : farfalla etc # /usr/sbin/vtund -n -- farfallafh xx.xx.xx.xx vtund[9409]: VTun client ver 02/27/2007 started vtund[9409]: Connecting to 82.225.154.2 vtund[9409]: Session farfallafh[82.225.154.2] opened vtund[9409]: UDP connection initialized vtund[9409]: LZO compression[level 9] initialized vtund[9409]: BlowFish encryption initialized Segmentation fault I tried reinstalling the following package to be sure that there are no mismatch between newer libs than at compile time : Tue Feb 27 00:56:02 2007 >>> dev-libs/lzo-2.02-r1 Tue Feb 27 01:08:42 2007 >>> dev-libs/crypto++-5.4-r1 Tue Feb 27 01:08:53 2007 >>> net-misc/vtun-2.6-r1 I dont know what to do more. Reproducible: Always Portage 2.1.2-r10 (default-linux/amd64/2006.1, gcc-4.1.2, glibc-2.5-r0, 2.6.20 x86_64) ================================================================= System uname: 2.6.20 x86_64 AMD Turion(tm) 64 Mobile Technology MT-32 Gentoo Base System release 1.12.9 Timestamp of tree: Thu, 22 Feb 2007 15:50:01 +0000 ccache version 2.4 [disabled] dev-java/java-config: 1.3.7, 2.0.31-r3 dev-lang/python: 2.3.6, 2.4.4 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: 2.4-r6 sys-apps/sandbox: 1.2.18.1 sys-devel/autoconf: 2.13, 2.61 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: 2.17 sys-devel/gcc-config: 1.3.14 sys-devel/libtool: 1.5.23b virtual/os-headers: 2.6.20 ACCEPT_KEYWORDS="amd64 ~amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=k8 -O3 -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/X11/xkb /usr/share/config" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf /etc/java-config/vms/ /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c" CXXFLAGS="-march=k8 -O3 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks metadata-transfer sandbox sfperms strict" GENTOO_MIRRORS="ftp://pandemonium.tiscali.de/pub/gentoo/" LINGUAS="en it fr de" MAKEOPTS="-j 1" 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" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/portage-fh" SYNC="rsync://82.225.154.2/gentoo-portage" USE="X a52 aac alsa amd64 arts berkdb bidi bitmap-fonts browserplugin cairo cdda cdio cli cracklib crypt cups dbus dga divx divx4linux dri dts dv dvb dvd dvdread edl encode exif fbcon fbdev ffmpeg flac font-server fortran freetype gdbm gnutls gphoto2 gpm httpd iconv imap innodb ipv6 isdnlog john jpeg kde libg++ live lua mad madwifi matroska midi mp3 ncurses nls nptl nptlonly nsplugin ogg oggvorbis opengl pam pch pcre pdf perl perlsuid pic png ppds pppd python qt3 qt4 quicktime readline realmedia reflection rtc sasl session speex spl sqlite3 ssl stream svg tcpd theora tiff truetype truetype-fonts type1-fonts unicode v4l v4l2 vcd vlm vorbis wifi wxwindows xorg xv xvid xvmc zlib" 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="synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en it fr de" USERLAND="GNU" VIDEO_CARDS="radeon ati" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, PORTAGE_RSYNC_EXTRA_OPTS
googling a little i've found that https://launchpad.net/ubuntu/+source/vtun/+bug/57974 http://sourceforge.net/mailarchive/forum.php?thread_id=8205403&forum_id=1827 Summary : it's a vtun bug, disabling compression helps. Using zlib instead of lzo could help, but i dont find USE flags that could help me do that on gentoo.
Does 2.6 work?
I'd recommend trying out the 3.0.1 experimental version. It is based on 3.0.0 and has a native support for lzo2. There's an ebuild here, please try it out: http://bugs.gentoo.org/show_bug.cgi?id=179901
BTW, I'm on amd64 and it works perfectly.
3.0.1 is now in tree, please test.
(In reply to comment #5) > 3.0.1 is now in tree, please test. > Version 3.0.2 still segfaults on amd64 when compression is turned on: Starting program: /usr/sbin/vtund -n -f /etc/vtun.otherhost.conf otherhost localhost 5000 vtund[8120]: VTun client ver 3.X 09/05/2009 started vtund[8120]: Connecting to localhost vtund[8120]: Remote Server sends <TuL9KE1> . vtund[8120]: Session otherhost[localhost] opened vtund[8120]: LZO compression[level 9] initialized vtund[8120]: Blowfish-128-ECB encryption initialized Program received signal SIGSEGV, Segmentation fault. lfd_linker () at linkfd.c:113 113 for(mod = lfd_mod_head; mod && len > 0; mod = mod->next ) (gdb) bt #0 lfd_linker () at linkfd.c:113 #1 0x000000000040a6f6 in linkfd (host=0xb0e390) at linkfd.c:406 #2 0x0000000000408228 in tunnel (host=0xb0e390) at tunnel.c:223 #3 0x0000000000406953 in client (host=0xb0e390) at client.c:141 #4 0x00000000004034a3 in main (argc=7, argv=0x7fff79aa66a8, env=0x7fff79aa66e8) at main.c:201 (gdb) thread apply all bt (gdb) bt full #0 lfd_linker () at linkfd.c:113 fd1 = 7 fd2 = 8 len = 87 fl = <value optimized out> tv = {tv_sec = 5, tv_usec = 952343} buf = 0xb11d30 "!E" out = 0xb11d30 "!E" fdset = {__fds_bits = {256, 0 <repeats 15 times>}} maxfd = 9 idle = 0 tmplen = <value optimized out> #1 0x000000000040a6f6 in linkfd (host=0xb0e390) at linkfd.c:406 sa = {__sigaction_handler = {sa_handler = 0x409cc0 <sig_hup>, sa_sigaction = 0x409cc0 <sig_hup>}, sa_mask = {__val = {0 <repeats 16 times>}}, sa_flags = 0, sa_restorer = 0} sa_oldterm = {__sigaction_handler = {sa_handler = 0x406600 <sig_term>, sa_sigaction = 0x406600 <sig_term>}, sa_mask = {__val = {0, 139983244600784, 6374016, 6369632, 139983256060306, 0, 4256771, 64, 1, 140735234596800, 140735234596864, 11605536, 6374016, 6369632, 4244993, 7526475291077602370}}, sa_flags = 67108866, sa_restorer = 0x7f506393df50 <__restore_rt>} sa_oldint = {__sigaction_handler = {sa_handler = 0x406600 <sig_term>, sa_sigaction = 0x406600 <sig_term>}, sa_mask = {__val = {0, 139983244600784, 6374016, 6369632, 139983256060306, 0, 4256771, 64, 1, 140735234596800, 140735234596864, 11605536, 6374016, 6369632, 4244993, 7526475291077602370}}, sa_flags = 67108866, sa_restorer = 0x7f506393df50 <__restore_rt>} sa_oldhup = {__sigaction_handler = {sa_handler = 0x1, sa_sigaction = 0x1}, sa_mask = {__val = {0, 139983244600784, 6374016, 6369632, 139983256060306, 0, 4256771, 64, 1, 140735234596800, 140735234596864, 11605536, 6374016, 6369632, 4244993, 7526475291077602370}}, sa_flags = 67108866, sa_restorer = 0x7f506393df50 <__restore_rt>} old_prio = 0 #2 0x0000000000408228 in tunnel (host=0xb0e390) at tunnel.c:223 null_fd = <value optimized out> opt = 1 fd = {8, -1} dev = "tun1", '\0' <repeats 15 times> interface_already_open = 0 #3 0x0000000000406953 in client (host=0xb0e390) at client.c:141 my_addr = {sin_family = 2, sin_port = 0, sin_addr = {s_addr = 0}, sin_zero = "\000\000\000\000\000\000\000"} svr_addr = {sin_family = 2, sin_port = 34835, sin_addr = {s_addr = 16777343}, sin_zero = "\000\000\000\000\000\000\000"} ---Type <return> to continue, or q <return> to quit--- sa = {__sigaction_handler = {sa_handler = 0x406600 <sig_term>, sa_sigaction = 0x406600 <sig_term>}, sa_mask = {__val = {0 <repeats 16 times>}}, sa_flags = 2, sa_restorer = 0} s = 7 opt = 1 reconnect = 1 #4 0x00000000004034a3 in main (argc=7, argv=0x7fff79aa66a8, env=0x7fff79aa66e8) at main.c:201 svr = 0 daemon = 0 sock = 0 dofork = <value optimized out> fd = 0 opt = <value optimized out> host = (struct vtun_host *) 0xb0e390 sa = {__sigaction_handler = {sa_handler = 0x7fff00000001, sa_sigaction = 0x7fff00000001}, sa_mask = {__val = {4294967295, 0, 3424768, 5979045888, 139983258009648, 139983258190680, 140735234598432, 139983258189824, 4200684, 1, 0, 7, 140735234598568, 139983244586648, 4245616, 0}}, sa_flags = 4204187, sa_restorer = 0} hst = <value optimized out>
