Bug 120360 – dev-python/ctypes-0.9.6 segfaults on amd64, probably because it has an executable stack

• Status: RESOLVED WORKSFORME
• Product: Gentoo Linux

[Description Patrick McLean 2006-01-25 18:50:10 UTC]

Merging dev-python/ctypes-0.9.6 works, but it just causes python to segfault when you try to use it:

 $ python test_clib.py
Segmentation fault
 $ python test_strchr.py
Segmentation fault
 $ python test_time.py
Segmentation fault

This may be because it has an executable stack, merging it prints this message:

QA Notice: the following files contain executable stacks
 Files with executable stacks will not work properly (or at all!)
 on some architectures/operating systems.  A bug should be filed
 at http://bugs.gentoo.org/ to make sure the file is fixed.
RWX --- --- usr/lib64/python2.4/site-packages/_ctypes.so

Here's my emerge info:

Portage 2.1_pre3-r1 (default-linux/amd64/2005.1, gcc-3.4.5, glibc-2.3.6-r2, 2.6.15-gentoo x86_64)
=================================================================
System uname: 2.6.15-gentoo x86_64 AMD Athlon(tm) 64 Processor 3400+
Gentoo Base System version 1.12.0_pre15
dev-lang/python:     2.4.2
sys-apps/sandbox:    1.2.17
sys-devel/autoconf:  2.13, 2.59-r7
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1
sys-devel/binutils:  2.16.1-r1
sys-devel/libtool:   1.5.22
virtual/os-headers:  2.6.11-r3
ACCEPT_KEYWORDS="amd64 ~amd64"
AUTOCLEAN="yes"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=athlon64 -O3 -fomit-frame-pointer -ffast-math -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3/share/config /usr/lib64/mozilla/defaults/pref /usr/share/X11/xkb /usr/share/config /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/texmf/web2c /etc/env.d"
CXXFLAGS="-march=athlon64 -O3 -fomit-frame-pointer -ffast-math -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoaddcvs autoconfig cvs digest distlocks multilib-strict sandbox sfperms strict"
GENTOO_MIRRORS="ftp://cs.ubishops.ca/pub/gentoo ftp://gentoo.risq.qc.ca http://gentoo.oregonstate.edu http://distfiles.gentoo.org"
LDFLAGS="-Wl,-O1"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage /usr/local/mod-x"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="amd64 X a52 aac aalib alsa audiofile avi bash-completion berkdb bitmap-fonts bmp bzip2 c++ cairo caps cdparanoia cdr crypt cscope css cups curl dbus doc dri dts dv dvd dvdr dvdread dvi edl eds emboss encode esd ethereal evo exif expat fam fat ffmpeg fftw flac foomaticdb fortran gb gcj gdbm gif gimp gimpprint glitz glut gmail gmp gnome gnutls gphoto2 gpm gstreamer gtk gtk2 gtkhtml guile gzip hal hfs howl idea idn ieee1394 imagemagick imap imlib imlib2 iproute2 jabber java jfs jpeg junit lcms libcaca libgda libwww linuxkeys live lzo lzw lzw-tiff mad matroska mikmod mmap mng mod mono mozdevelop mozilla mozsvg mp3 mpeg mplayer msn mythtv native nautilus ncurses network nfs nls no-old-linux no_wxgtk1 noantlr nob nobcel nobeanutils nobsh nocommonslogging nocommonsnet nojsch nolog4j nomotif noplugin norhino noxalan noxerces nptl nptlonly offensive ogg oggvorbis openal opengl pam pcre pda pdflib perl plugin png ppds python quicktime radeon readline real reiserfs rtc ruby samba sdl slang sndfile speex spell sqlite ssl stream subversion svg tcltk tcpd tetex tga theora tiff transcode truetype truetype-fonts type1-fonts udev unicode usb userlocales v4l v4l2 vcd vorbis wmf wxwindows xanim xine xml2 xpm xprint xscreensaver xv xvid xvmc zlib elibc_glibc kernel_linux userland_GNU"
Unset:  ASFLAGS, CTARGET, LANG, LC_ALL, LINGUAS

[Comment 1 Patrick McLean 2006-01-25 18:51:14 UTC]

Created attachment 78125 [details]
strace from test_clib.py

[Comment 2 Lukasz Strzygowski (RETIRED) 2006-06-25 06:17:43 UTC]

Please try with 0.9.9.6.

[Comment 3 Thomas Cort (RETIRED) 2006-08-16 22:01:15 UTC]

(In reply to comment #2)
> Please try with 0.9.9.6.

0.9.9.6 looks good on amd64. media-sound/quodlibet works and all of the tests pass.

cheese test # pwd
/usr/lib64/python2.4/site-packages/ctypes/test
cheese test # python runtests.py
.......................................................................................................................................................................................................................................................
----------------------------------------------------------------------
Ran 247 tests in 0.301s (0 modules skipped)
Unavailable resources: printing

OK

[Comment 4 Simon Stelling (RETIRED) 2006-08-25 07:48:54 UTC]

let's close this then