Bug 96394 – 'dpkg -b' (and alien) segfaults

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Josh England 2005-06-17 10:29:53 UTC]

I'm trying to distribute a software package that I wrote in RPM, deb, and ebuild
formats.  I can build the RPM and ebuild (obviously) just fine on a Gentoo
system, but 'dpkg -b' dies with a Segmentation Fault.  I have to jump onto a
Debian box just to create the .deb archive.  strace is less than useful:

open("debian/DEBIAN/control", O_RDONLY|O_LARGEFILE) = 4
fstat64(4, {st_mode=S_IFREG|0644, st_size=939, ...}) = 0
read(4, "Package: oneSIS\nVersion: 2.0rc10"..., 939) = 939
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++


I haven't dug into the dpkg code, nor do I have time to, so I thought I'd post
this bug.  I have not tried to duplicate the problem on any other distro besides
gentoo.

Reproducible: Always
Steps to Reproduce:
1. copy sample control file into test/DEBIAN directory
(get sample here: http://linuxdevices.com/articles/AT8047723203.html)
2. emerge dpkg
3. dpkg -b test test.deb

Actual Results:  
Segmentation Fault

Expected Results:  
create test.deb

# emerge info
Portage 2.0.51.22-r1 (default-linux/x86/2005.0/2.4, gcc-3.4.3-20050110,
glibc-2.3.5-r0, 2.6.7 i686)
=================================================================
System uname: 2.6.7 i686 Intel(R) Pentium(R) M processor 1600MHz
Gentoo Base System version 1.6.12
dev-lang/python:     2.2.3-r5, 2.3.5
sys-apps/sandbox:    1.2
sys-devel/autoconf:  2.13, 2.59-r6
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9, 1.8.5-r3, 1.9.5
sys-devel/binutils:  2.16-r1
sys-devel/libtool:   1.5.18
virtual/os-headers:  2.4.19-r1, 2.4.22-r1
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O3 -mtune=i686 -funroll-loops -pipe"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.1/share/config
/usr/kde/3.2/share/config /usr/kde/3.3/env /usr/kde/3.3/share/config
/usr/kde/3.3/shutdown /usr/kde/3.4/env /usr/kde/3.4/share/config
/usr/kde/3.4/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb
/usr/lib/mozilla/defaults/pref /usr/share/config /var/bind /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/texmf/web2c /etc/env.d"
CXXFLAGS="-O3 -mtune=i686 -funroll-loops -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig ccache distlocks sandbox sfperms strict"
GENTOO_MIRRORS="http://gentoo.ccccom.com http://gentoo.llarian.net/
http://gentoo.binarycompass.org http://mirror.tucdemonic.org/gentoo/
http://ftp.gentoo.or.kr/"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X Xaw3d aalib acpi acroread alsa apache2 apm arts atlas avi bash-completion
berkdb bitmap-fonts bonobo calendar cdr crypt cscope cups curl dba dga directfb
divx4linux doc dvd dvdr eds emacs emboss encode esd ethereal evo fam fastcgi
fbcon firebird flac flash foomaticdb fortran ftp fusion gb gd gdbm ggi gif gnome
gphoto2 gpm gps gstreamer gtk gtk2 guile i8x0 imagemagick imap imlib innodb ipv6
java jikes jpeg junit kde kerberos ldap leim libg++ libgda libwww lirc mad
maildir mbox mcal mikmod mmx mono motif mozilla mp3 mpeg mpi mule mysql
nagios-dns nagios-ntp nagios-ping nagios-ssh nas ncurses nls odbc offensive ogg
oggvorbis opengl oss pam pcmcia pda pdflib perl pic plotutils png pnp postgres
ppds python qt quicktime readline real ruby samba sdk sdl server session slang
slp sndfile snmp spell sqlite sse sse2 ssl stream subversion svg svga tcltk tcpd
tetex threads tiff truetype truetype-fonts trusted type1-fonts usb vorbis x86
xine xinerama xml xml2 xmms xosd xv xvid zlib video_cards_radeon userland_GNU
kernel_linux elibc_glibc"
Unset:  ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, MAKEOPTS

[Comment 1 Michal Feix 2005-07-03 06:03:16 UTC]

Created attachment 62536 [details, diff]
gcc4 and gcc3 patch

Same problem here. This small patch solves the problem with gcc3 and newer.

[Comment 2 Danny van Dyk (RETIRED) 2005-07-03 08:30:46 UTC]

Created attachment 62545 [details, diff]
New gcc4 patch to replace broken one.

Michael: Good work on finding it :-), bad work on spotting that this is exactly
a
reversion of the current gcc patch. :-P This helps surely with gcc-3.4, but not

with gcc-4.x 

Heinrich: Please replace the gcc4 patch from CVS with the attached one. It
fixes ugly arithemtics on pointers which should allow clean compilation with
gcc-4.x. (Also, warnings are gone now when compiling with gcc-3.4)

[Comment 3 Michal Feix 2005-07-04 12:25:46 UTC]

:)) Ok, I agree - I made that patch in a hurry. I just urgently needed to make a
dep package on Gentoo...

[Comment 4 Danny van Dyk (RETIRED) 2005-07-07 09:53:42 UTC]

Fixed in CVS.