87598 2005-04-01 13:51 0000 valgrind-2.4.0 segfaults no matter what I do 2005-05-11 02:54:26 0000 1 1 1 Unclassified Gentoo Linux Unspecified unspecified x86 Linux RESOLVED FIXED P2 major --- 1 aaron@cs.tu-berlin.de griffon26@gentoo.org 7words.sg@gmail.com battousai@gentoo.org solar@gentoo.org aaron@cs.tu-berlin.de 2005-04-01 13:51:46 0000 I haven't found the cause yet, but whatever I do, my valgrind segfaults... aaron@therion ~ $ valgrind Segmentation fault Reproducible: Always Steps to Reproduce: Actual Results: valgrind segfaulting... Expected Results: valgrind supporting me in finding possible bugs in my code therion aaron # emerge info Portage 2.0.51.19 (default-linux/x86/2004.3, gcc-3.4.3-20050110, glibc-2.3.4.20050125-r1, 2.6.11-gentoo-r4 i686) ================================================================= System uname: 2.6.11-gentoo-r4 i686 AMD Athlon(tm) XP 2000+ Gentoo Base System version 1.6.10 Python: dev-lang/python-2.3.5 [2.3.5 (#1, Mar 29 2005, 23:58:21)] dev-lang/python: 2.3.5 sys-devel/autoconf: 2.13, 2.59-r6 sys-devel/automake: 1.5, 1.8.5-r3, 1.7.9-r1, 1.6.3, 1.4_p6, 1.9.5 sys-devel/binutils: 2.15.92.0.2-r7 sys-devel/libtool: 1.5.14 virtual/os-headers: 2.6.8.1-r4 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CFLAGS="-O2 -march=athlon-xp -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /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/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-O2 -march=athlon-xp -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs autoconfig ccache distlocks sandbox sfperms" GENTOO_MIRRORS="ftp://ftp.join.uni-muenster.de/pub/linux/distributions/gentoo ftp://pandemonium.tiscali.de/pub/gentoo/" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.de.gentoo.org/gentoo-portage" USE="x86 3dnow 3dnowex X aac aalib acpi acpi4linux alsa apache2 apm arts avi bash-completion berkdb bitmap-fonts cdr chroot codecs crypt cups curl dba dga directfb divx4linux dlloader dts dvd dvdread emboss encode erandom faac faad fam fbcon ffmpeg flac font-server foomaticdb fortran freetype gd gdbm gif gphoto2 gpm graphviz gtk2 hal imagemagick imlib ipv6 java jpeg jpeg2k junit kde libcaca libg++ libwww mad matroska mikmod mime mjpegmpeg mmx mmxext mng motif mp3 mpeg mpeg4 mplayer ncurses network nls nptl nvidia oggvorbis opengl oss pam pdflib perl php pic pie png python qt quicktime readline real rtc samba sdl slang spell sqlite sse ssl stencil-buffer svga sysfs tcpd tga theora tiff toolbari truetype truetype-fonts type1 type1-fonts unicode usb userlocales vim-with-x vorbis xine xml2 xmms xv xvid xvmc zlib linguas_de" Unset: ASFLAGS, CBUILD, CTARGET, LANG, LC_ALL, LDFLAGS, PORTDIR_OVERLAY griffon26@gentoo.org 2005-04-02 04:10:58 0000 I'll look into it in a few days. For now, I have masked 2.4.0. aaron@cs.tu-berlin.de 2005-04-02 10:49:34 0000 ok... today I have played arround with this ebuild a bit.... even if I do: CFLAGS="" emerge valgrind the resulting valgrind segfaults for me... BUT if I remove the line from the valgrind-2.4.0 ebuild where we force it to respect $CFLAGS, I get a version working just fine. So I presume the sed-magic messes up something in the configure file... so concluding I can say: removing sed -i -e 's:CFLAGS="-Wno-long-long":CFLAGS="$CFLAGS -Wno-long-long":' configure from the ebuild made me have a working valgrind.... griffon26@gentoo.org 2005-04-05 10:44:07 0000 Just to log here what we know: adding --disable-pie to configure will also result in a working build of valgrind. I'll be looking into the CFLAGS thing you mentioned. griffon26@gentoo.org 2005-04-05 13:42:23 0000 Battousai, I added you to the cc because you may be interested in this one. Solar, you've helped me before when I expressed my cluelessness when it comes to PIE. I could use your help again if that's ok. The thing is that the valgrind developers are trying to use PIE (iirc because they want valgrind to be able to run itself). Unfortunately, valgrind's tests do not run with hardened gcc (see http://bugs.kde.org/show_bug.cgi?id=96321), so I filter -fPIC, causing -fnopie to be added to CFLAGS. This in turn makes it impossible for valgrind to use PIE, so I have to configure it with --disable-pie (otherwise it will segfault). Is there a way to get around the reserved BREG without completely disabling PIE? griffon26@gentoo.org 2005-04-12 11:40:58 0000 I just checked in a version that should work fine even with PIE. Thanks for the report Olaf. aaron@cs.tu-berlin.de 2005-04-12 12:23:25 0000 thanks for your efforts.. just tested it and it works perfect! greg_g@gentoo.org 2005-05-11 02:54:26 0000 *** Bug 88138 has been marked as a duplicate of this bug. ***