The busybox binary integrated in the initramfs generated with genkernel does a segmentation fault when executed during boot or by its self when extracted from the initramfs. Error during boot: traps: uname[198] general protection fault ip:80550bc sp:bfde498c error:0 in busybox[8049000+16c000] traps: cut[201] general protection fault ip:80550bc sp:bfde498c error:0 in busybox[8049000+16c000] traps: mknod[205] general protection fault ip:80550bc sp:bfde498c error:0 in busybox[8049000+16c000] traps: mknod[206] general protection fault ip:80550bc sp:bfde498c error:0 in busybox[8049000+16c000] Segmentation fault when executed from extracted initramfs: Gentoo ~/genkernel4_initramfs/bin # ./busybox uname -a Linux Gentoo 5.4.38-gentoo #1 SMP Tue May 12 12:24:17 EDT 2020 i686 GNU/Linux Segmentation fault Gentoo ~/genkernel4_initramfs/bin # This does not happen with the busybox binary from the /bin directory: Gentoo ~ # /bin/busybox uname -a Linux Gentoo 5.4.38-gentoo #1 SMP Tue May 12 12:24:17 EDT 2020 i686 i686 i386 GNU/Linux Gentoo ~ # Gentoo ~ # emerge --info Portage 2.3.99 (python 3.7.7-final-0, default/linux/x86/17.0, gcc-9.3.0, glibc-2.30-r8, 5.4.38-gentoo i686) ================================================================= System uname: Linux-5.4.38-gentoo-i686-Intel-R-_Xeon-R-_CPU_E5504_@_2.00GHz-with-gentoo-2.6 KiB Mem: 3109424 total, 197068 free KiB Swap: 530428 total, 529652 free Head commit of repository mv: 7c6c8d6d0cd811665ac38c2918216cef78a1040c Head commit of repository spikyatlinux: 0de940c5f2c4b56b9d8240194f643db896adf606 Head commit of repository vmacs: 47c9f6a71b7ed85c63cb481c624ee7fc4892f565 Timestamp of repository gentoo: Wed, 27 May 2020 00:45:01 +0000 Head commit of repository gentoo: 20207419457c676f156e212bf03cf27982eea494 sh bash 5.0_p17 ld GNU ld (Gentoo 2.33.1 p2) 2.33.1 app-shells/bash: 5.0_p17::gentoo dev-lang/perl: 5.30.1::gentoo dev-lang/python: 2.7.18::gentoo, 3.7.7-r2::gentoo, 3.8.2-r2::gentoo dev-util/cmake: 3.16.5::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.6-r1::gentoo sys-apps/openrc: 0.42.1::gentoo sys-apps/sandbox: 2.13::gentoo sys-devel/autoconf: 2.69-r4::gentoo sys-devel/automake: 1.16.1-r1::gentoo sys-devel/binutils: 2.33.1-r1::gentoo sys-devel/gcc: 9.3.0::gentoo sys-devel/gcc-config: 2.2.1::gentoo sys-devel/libtool: 2.4.6-r6::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 5.4::gentoo (virtual/os-headers) sys-libs/glibc: 2.30-r8::gentoo Repositories: mv location: /var/lib/layman/mv sync-type: git sync-uri: git://anongit.gentoo.org/user/mv.git masters: gentoo priority: 50 spikyatlinux location: /var/lib/layman/spikyatlinux sync-type: git sync-uri: https://github.com/spikyatlinux/ebuilds_for_gentoo.git masters: gentoo priority: 50 vmacs location: /var/lib/layman/vmacs sync-type: git sync-uri: git://anongit.gentoo.org/user/vmacs.git masters: gentoo priority: 50 gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync2.ca.gentoo.org/gentoo-portage priority: 1000 sync-rsync-verify-max-age: 24 sync-rsync-verify-metamanifest: yes sync-rsync-verify-jobs: 1 sync-rsync-extra-opts: ACCEPT_KEYWORDS="x86" ACCEPT_LICENSE="@FREE" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=native -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /var/bind /var/spool/munin-async/.ssh" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php7.2/ext-active/ /etc/php/apache2-php7.3/ext-active/ /etc/php/apache2-php7.4/ext-active/ /etc/php/cgi-php7.2/ext-active/ /etc/php/cgi-php7.3/ext-active/ /etc/php/cgi-php7.4/ext-active/ /etc/php/cli-php7.2/ext-active/ /etc/php/cli-php7.3/ext-active/ /etc/php/cli-php7.4/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -march=native -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--with-bdeps=y" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -march=i686 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms split-log strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -march=i686 -pipe" GENTOO_MIRRORS="rsync://gentoo.gossamerhost.com/gentoo-distfiles/ ftp://mirrors.tera-byte.com/pub/gentoo http://gentoo.mirrors.tera-byte.com/ rsync://mirrors.tera-byte.com/gentoo ftp://mirror.csclub.uwaterloo.ca/gentoo-distfiles/ https://mirror.csclub.uwaterloo.ca/gentoo-distfiles/ http://mirror.csclub.uwaterloo.ca/gentoo-distfiles/" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j3" PKGDIR="/var/cache/binpkgs" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" USE="acl berkdb bzip2 cli crypt dri fortran gdbm iconv libtirpc logrotate ncurses nls nptl openmp pam pcre readline seccomp split-usr ssl tcpd threads unicode x86 xattr zlib" ABI_X86="32" ADA_TARGET="gnat_2018" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="cgi cgid info rewrite status authz_host authn_core authz_core unixd dir mime alias include negotiation log_config log_forensic logio socache_shmcb setenvif headers" APACHE2_MPMS="event" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="iptables apache bind apcupsd hddtemp df disk md memory mysql network ntpd rrdtool sensors smart cpu interface ethstat dns" CPU_FLAGS_X86="mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="pc" INPUT_DEVICES="libinput" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_7" PYTHON_TARGETS="python2_7 python3_7" RUBY_TARGETS="ruby24 ruby25" USERLAND="GNU" VIDEO_CARDS="amdgpu fbdev intel nouveau radeon radeonsi vesa dummy v4l" XTABLES_ADDONS="account geoip iface ipmark" Unset: CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS Gentoo ~ #
Created attachment 642130 [details] genkernel log of generated initramfs
Created attachment 642132 [details] strace of busybox segmentation fault
It is sad to read that you have problems with the software. The situation seems to be a bit more complicate and requires some analysis. We can not help you efficiently via bug tracker. The bug tracker aims rather on specific problems in .ebuilds and less on individual systems. I have had very good experience on the gentoo IRC [1] with questions like this. Of course there are also forums and mailing lists [2,3]. I hope you understand, that I will close the bug here therefore and wish you good luck on one of the mentioned channels [4]. Please reopen the ticket in order to provide an indication for an specific error in an ebuild or any gentoo related product. [1] https://www.gentoo.org/get-involved/irc-channels/ [2] https://forums.gentoo.org/ [3] https://www.gentoo.org/get-involved/mailing-lists/all-lists.html [4] https://www.gentoo.org/support/
Eric, did you post on the forum or elsewhere about this? In case not, I'll just make a brief note here that I think was causing this for me. /var/log/genkernel.log has a line Use -mpreferred-stack-boundary=2 on i386 arch (STACK_OPTIMIZATION_386) [N/y/?] n If I specify a custom busybox config in genkernel.conf created by taking the packaged busy-config and adding a line CONFIG_STACK_OPTIMIZATION_386=n then the generated busybox doesn't segfault, at least not on my system.
(In reply to Stephen Bell from comment #4) > Eric, did you post on the forum or elsewhere about this? > > In case not, I'll just make a brief note here that I think was causing this > for me. > > /var/log/genkernel.log has a line > > Use -mpreferred-stack-boundary=2 on i386 arch (STACK_OPTIMIZATION_386) > [N/y/?] n > > If I specify a custom busybox config in genkernel.conf created by taking the > packaged busy-config and adding a line > > CONFIG_STACK_OPTIMIZATION_386=n > > then the generated busybox doesn't segfault, at least not on my system. Yes I did post in the forum about it. Testing your solution right now.
Thank you very much Stephen. That solved my problem I was having. Now why do I have to change that config on my 32 bit system and not on my 64 bit system? Both are VMs running on the same ESXi host. The 32bit VM was P2V from an old 32bit only physical server. Both have CONFIG_STACK_OPTIMIZATION_386=y in the /etc/portage/savedconfig/sys-apps/busybox-1.31.1-r2 file, that I guess is used when busybox is compiled with genkernel. Or that is not the case?
Genkernel doesn't use anything from host system except toolchain. That means genkernel doesn't copy already built sys-apps/busybox into initramfs -- genkernel will compile its own busybox. And while doing that, genkernel uses on CFLAGS and doesn't use portage's savedconfig feature because it isn't portage :) What I don't understand yet is why CONFIG_STACK_OPTIMIZATION_386=y is failing for you. @ Stephen: Could you please share your system and CPU details, too?
It's this System uname: Linux-5.4.48-gentoo-x86_64-x86_64-AMD_Ryzen_7_2700_Eight-Core_Processor-with-gentoo-2.6 but as you see it's running 64-bit at the moment. I'll reboot into 32-bit and run emerge --info once chromium has finished building (if that happens today).
Portage 2.3.103 (python 3.7.8-final-0, default/linux/x86/17.0/desktop/gnome/systemd, gcc-9.3.0, glibc-2.30-r8, 5.4.48-gentoo-x86 i686) ================================================================= System uname: Linux-5.4.48-gentoo-x86-i686-AMD_Ryzen_7_2700_Eight-Core_Processor-with-gentoo-2.6 KiB Mem: 32898532 total, 30959592 free KiB Swap: 8385852 total, 8385852 free Timestamp of repository gentoo: Thu, 13 Aug 2020 00:15:01 +0000 Head commit of repository gentoo: 59d5d32bc810eda4d31552bbc381becdce7ae23c sh bash 5.0_p17 ld GNU ld (Gentoo 2.33.1 p2) 2.33.1 app-shells/bash: 5.0_p17::gentoo dev-java/java-config: 2.3.1::gentoo dev-lang/perl: 5.30.3::gentoo dev-lang/python: 2.7.18-r1::gentoo, 3.7.8-r2::gentoo, 3.8.4-r1::gentoo dev-util/cmake: 3.16.5::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.6-r1::gentoo sys-apps/sandbox: 2.18::gentoo sys-devel/autoconf: 2.13-r1::gentoo, 2.69-r4::gentoo sys-devel/automake: 1.15.1-r2::gentoo, 1.16.1-r1::gentoo sys-devel/binutils: 2.33.1-r1::gentoo sys-devel/gcc: 9.3.0-r1::gentoo sys-devel/gcc-config: 2.3::gentoo sys-devel/libtool: 2.4.6-r6::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 5.4-r1::gentoo (virtual/os-headers) sys-libs/glibc: 2.30-r8::gentoo Repositories: my_local_overlay location: /usr/local/portage masters: gentoo priority: 0 gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.uk.gentoo.org/gentoo-portage priority: 1 sync-rsync-verify-max-age: 24 sync-rsync-verify-jobs: 1 sync-rsync-verify-metamanifest: yes sync-rsync-extra-opts: ikelos location: /var/lib/layman/ikelos masters: gentoo priority: 50 rich0 location: /var/lib/layman/rich0 masters: gentoo priority: 50 my-overlay location: /usr/local/overlays/my-overlay masters: gentoo priority: 100 ACCEPT_KEYWORDS="x86" ACCEPT_LICENSE="@FREE" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -pipe -march=native" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib/libreoffice/program/sofficerc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-O2 -pipe -march=native" DISTDIR="/usr/portage/distfiles" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -march=i686 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -march=i686 -pipe" GENTOO_MIRRORS="ftp://mirror.bytemark.co.uk/gentoo/ ftp://gentoo.mirror.web4u.cz/ http://mirror.bytemark.co.uk/gentoo/ http://ftp.twaren.net/Linux/Gentoo/ rsync://mirror.bytemark.co.uk/gentoo/" LANG="en_GB.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en_GB en" MAKEOPTS="-j9" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" USE="X a52 aac acl acpi alsa apache2 bash-completion berkdb bluetooth branding bzip2 cairo cdda cdr cli colord crypt cups dbus dri dts dvd dvdr eds emboss encode evo exif flac fortran gdbm gif gnome gnome-keyring gnome-online-accounts gpm gstreamer gtk iconv icu introspection ipv6 jpeg lcms ldap libglvnd libnotify libsecret libtirpc mad mng mp3 mp4 mpeg nautilus ncurses networkmanager nls nptl nptlonly ogg opengl openmp pam pango pcre pdf png policykit ppds pulseaudio qt5 readline sdl seccomp spell split-usr ssl startup-notification svg systemd tcpd tiff tracker truetype udev udisks unicode upower usb vorbis wxwidgets x264 x86 xattr xcb xml xprint xv xvid zlib" ABI_X86="32" ADA_TARGET="gnat_2018" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="3dnow 3dnowext mmx mmxext popcnt sse sse2 sse3 sse4a" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="evdev" KERNEL="linux" L10N="en-GB en" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2 php7-3" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_7" PYTHON_TARGETS="python2_7 python3_7" RUBY_TARGETS="ruby25" USERLAND="GNU" VIDEO_CARDS="nouveau" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Here is a 2nd 32 bit system that I have that has the same issue. This one is installed on a physical computer with a Core I7 950 CPU. Portage 2.3.103 (python 3.7.8-final-0, default/linux/x86/17.0, gcc-9.3.0, glibc-2.30-r8, 4.19.86-gentoo i686) ================================================================= System uname: Linux-4.19.86-gentoo-i686-Intel-R-_Core-TM-_i7_CPU_950_@_3.07GHz-with-gentoo-2.6 KiB Mem: 6145952 total, 4376804 free KiB Swap: 2097144 total, 2096368 free Head commit of repository mv: 0b62b96755582e3ea8c7dc3748f9c27b30a25a04 Timestamp of repository gentoo: Mon, 03 Aug 2020 00:45:01 +0000 Head commit of repository gentoo: 3c138d61b2d48824e7626dd92a98269e065babed sh bash 5.0_p17 ld GNU ld (Gentoo 2.33.1 p2) 2.33.1 app-shells/bash: 5.0_p17::gentoo dev-lang/perl: 5.30.3::gentoo dev-lang/python: 2.7.18-r1::gentoo, 3.7.8-r2::gentoo, 3.8.4-r1::gentoo dev-util/cmake: 3.16.5::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.6-r1::gentoo sys-apps/openrc: 0.42.1::gentoo sys-apps/sandbox: 2.18::gentoo sys-devel/autoconf: 2.69-r4::gentoo sys-devel/automake: 1.11.6-r3::gentoo, 1.12.6-r2::gentoo, 1.16.1-r1::gentoo sys-devel/binutils: 2.33.1-r1::gentoo sys-devel/gcc: 9.3.0-r1::gentoo sys-devel/gcc-config: 2.3::gentoo sys-devel/libtool: 2.4.6-r6::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 5.4-r1::gentoo (virtual/os-headers) sys-libs/glibc: 2.30-r8::gentoo Repositories: mv location: /var/lib/layman/mv sync-type: git sync-uri: git://anongit.gentoo.org/user/mv.git masters: gentoo priority: 50 gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.ca.gentoo.org/gentoo-portage priority: 1000 sync-rsync-verify-jobs: 1 sync-rsync-extra-opts: sync-rsync-verify-max-age: 24 sync-rsync-verify-metamanifest: yes ACCEPT_KEYWORDS="x86" ACCEPT_LICENSE="@FREE" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=nehalem -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /var/bind /var/spool/munin-async/.ssh" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php7.2/ext-active/ /etc/php/apache2-php7.3/ext-active/ /etc/php/apache2-php7.4/ext-active/ /etc/php/cgi-php7.2/ext-active/ /etc/php/cgi-php7.3/ext-active/ /etc/php/cgi-php7.4/ext-active/ /etc/php/cli-php7.2/ext-active/ /etc/php/cli-php7.3/ext-active/ /etc/php/cli-php7.4/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -march=nehalem -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--with-bdeps=y" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -march=i686 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -march=i686 -pipe" GENTOO_MIRRORS="rsync://gentoo.gossamerhost.com/gentoo-distfiles/ rsync://mirrors.tera-byte.com/gentoo ftp://mirrors.tera-byte.com/pub/gentoo ftp://mirror.csclub.uwaterloo.ca/gentoo-distfiles/" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en fr" MAKEOPTS="-j8" PKGDIR="/var/cache/binpkgs" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" USE="acl berkdb bindist bzip2 cli crypt dri fortran gdbm iconv icu libtirpc logrotate ncurses nls nptl openmp pam pcre readline seccomp split-usr ssl tcpd threads unicode x86 xattr zlib" ABI_X86="32" ADA_TARGET="gnat_2018" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="filter deflate headers expires cgi cgid info rewrite status authz_host authn_core authz_core unixd dir mime alias include negotiation log_config log_forensic logio socache_shmcb setenvif" APACHE2_MPMS="event" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="pc" INPUT_DEVICES="libinput" KERNEL="linux" L10N="en fr" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_7" PYTHON_TARGETS="python2_7 python3_7" RUBY_TARGETS="ruby25" SANE_BACKENDS="snapscan" USERLAND="GNU" VIDEO_CARDS="radeon" XTABLES_ADDONS="account geoip iface ipmark" Unset: CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
I am not sure what to do here. I cannot reproduce. I tested on *real* i686-only hardware like Intel(R) Atom(TM) CPU N550 and Pentium 4 (Prescott) -- both systems booted with kernel/initramfs created by genkernel-4.1.0 (and yes, CONFIG_STACK_OPTIMIZATION_386=y was automatically set busybox). I also booted multiple x86 virtual machines on various modern Intel- and AMD-based hosts using different hypervisors (VMware, HypverV..). So I don't feel comfortable to force CONFIG_STACK_OPTIMIZATION_386=n for everyone just because of 2 reports from people not even using real x86 hardware (please don't get me wrong on this).
I'm ok. I'm only keeping an x86 system for... sentimental reasons and I have a workaround for this problem anyway.
Sorry for my ignorance, but what does the option CONFIG_STACK_OPTIMIZATION_386=y do?
See http://lists.busybox.net/pipermail/busybox-cvs/2018-April/037958.html
I am seeing the same issue under similar circumstances (x86 VM running in VMware on a Core i7.) Disabling CONFIG_STACK_OPTIMIZATION_386 works for me as well.
Could anyone experiencing this problem please report to busybox upstream and report back link to that mail/bug report?
Busybox maintainer gave their view at https://lists.debian.org/debian-boot/2018/01/msg00352.html on a discussion from early 2018 about the debian version of this problem. If I'm reading it correctly (not a given, I don't understand the issue), it looks like the CONFIG_STACK_OPTIMIZATION_386 option _is_ the upstream fix to the issue. Original debian bug report here: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=886506;msg=97.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/proj/genkernel.git/commit/?id=064a2d9f2d6e6d4c5b5f2b04464c767387ef4f6c commit 064a2d9f2d6e6d4c5b5f2b04464c767387ef4f6c Author: Thomas Deutschmann <whissi@gentoo.org> AuthorDate: 2020-08-23 20:15:29 +0000 Commit: Thomas Deutschmann <whissi@gentoo.org> CommitDate: 2020-08-23 20:15:41 +0000 busy-config: Disable CONFIG_STACK_OPTIMIZATION_386 Using '-mpreferred-stack-boundary=2' is considered broken and is causing problems for some users. Bug: https://bugs.gentoo.org/725674 Signed-off-by: Thomas Deutschmann <whissi@gentoo.org> defaults/busy-config | 1 + 1 file changed, 1 insertion(+)
I am really wondering what is triggering this. Also, is the binary always broken or just in initramfs environment? It would be helpful if some advanced user who is able to reproduce could rebuild busybox with this option and debug symbols enabled to get a backtrace. Even "ip reported..." information would be helpful. We really need to see the failing instruction. In the meanwhile I disable the option for now.
Created attachment 656506 [details] build log of Busybox with CONFIG_STACK_OPTIMIZATION_386=y build log of Busybox with CONFIG_STACK_OPTIMIZATION_386=y but does not show -mpreferred-stack-boundary=2
Created attachment 656508 [details] elog of Busybox elog of Busybox showing it is using /etc/portage/savedconfig/sys-apps/busybox-1.31.1-r2
Hi Thomas, I am trying to get you the information you need, but for some reason when building Busybox from Portage it seems to not take the /etc/portage/savedconfig/sys-apps/busybox-1.31.1-r2 config because I don't see '-mpreferred-stack-boundary=2' in the build log when 'CONFIG_STACK_OPTIMIZATION_386=y' is set. Here is my portage busybox USE flags: [ebuild R ] sys-apps/busybox-1.31.1-r2::gentoo USE="debug savedconfig static -ipv6 -livecd -make-symlinks -math -mdev -pam (-selinux) -sep-usr -syslog -systemd" 0 KiB With 'CONFIG_STACK_OPTIMIZATION_386=y' or 'CONFIG_STACK_OPTIMIZATION_386=n'. I have the same results. No segmentation fault
(In reply to Eric Gravel from comment #22) > Hi Thomas, I am trying to get you the information you need, but for some > reason when building Busybox from Portage it seems to not take the > /etc/portage/savedconfig/sys-apps/busybox-1.31.1-r2 config because I don't > see '-mpreferred-stack-boundary=2' in the build log when > 'CONFIG_STACK_OPTIMIZATION_386=y' is set. > > Here is my portage busybox USE flags: > [ebuild R ] sys-apps/busybox-1.31.1-r2::gentoo USE="debug savedconfig > static -ipv6 -livecd -make-symlinks -math -mdev -pam (-selinux) -sep-usr > -syslog -systemd" 0 KiB > > > With 'CONFIG_STACK_OPTIMIZATION_386=y' or 'CONFIG_STACK_OPTIMIZATION_386=n'. > I have the same results. No segmentation fault See comment 7. The package build doesn't bypasses some of the busybox build systme and uses the portage compile flags.
(In reply to Thomas Deutschmann from comment #19) > I am really wondering what is triggering this. Also, is the binary always > broken or just in initramfs environment? It would be helpful if some > advanced user who is able to reproduce could rebuild busybox with this > option and debug symbols enabled to get a backtrace. Even "ip reported..." > information would be helpful. We really need to see the failing instruction. > > In the meanwhile I disable the option for now. It segfaults whether in initramfs or not. Not an advanced user, and I wouldn't know how to get genkernel to build a debug busybox, but I used the bundled base 1.32 busybox archive, changed the .config to enable some of the debugging options, and got a debuggable busybox_unstripped. Running this in gdb with parameters "uname -a", I get (gdb) run uname -a Starting program: /tmp/bb/busybox-1.32.0/busybox_unstripped uname -a Linux nova 5.4.57-gentoo-x86 #1 SMP PREEMPT Sun Aug 16 19:26:04 BST 2020 i686 GNU/Linux Program received signal SIGSEGV, Segmentation fault. 0x08056108 in __run_exit_handlers () (gdb) backtrace #0 0x08056108 in __run_exit_handlers () #1 0x08056371 in exit () #2 0x0812504d in xfunc_die () at libbb/xfunc_die.c:20 #3 0x081d9d23 in fflush_stdout_and_exit (retval=retval@entry=0) at libbb/fflush_stdout_and_exit.c:21 #4 0x081c3f8c in uname_main (argc=2, argv=0xbffff1a8) at coreutils/uname.c:212 #5 0x0812449b in run_applet_no_and_exit (applet_no=362, name=name@entry=0xbffff33e "uname", argv=argv@entry=0xbffff1a8) at libbb/appletlib.c:999 #6 0x081247b0 in run_applet_and_exit (name=0xbffff33e "uname", argv=argv@entry=0xbffff1a8) at libbb/appletlib.c:1017 #7 0x08124798 in busybox_main (argv=0xbffff1a8) at libbb/appletlib.c:960 #8 run_applet_and_exit (name=<optimized out>, argv=argv@entry=0xbffff1a4) at libbb/appletlib.c:1010 #9 0x0812483d in main (argc=3, argv=0xbffff1a4) at libbb/appletlib.c:1151
> > It segfaults whether in initramfs or not. > > Not an advanced user, and I wouldn't know how to get genkernel to build a > debug busybox, but I used the bundled base 1.32 busybox archive, changed the > .config to enable some of the debugging options, and got a debuggable > busybox_unstripped. Running this in gdb with parameters "uname -a", I get > Changes to .config after running make defconfig (not sure the CFLAGS change did anything). @@ -41,7 +41,7 @@ # # Build Options # -# CONFIG_STATIC is not set +CONFIG_STATIC=y # CONFIG_PIE is not set # CONFIG_NOMMU is not set # CONFIG_BUILD_LIBBUSYBOX is not set @@ -50,7 +50,7 @@ # CONFIG_FEATURE_SHARED_BUSYBOX is not set CONFIG_CROSS_COMPILER_PREFIX="" CONFIG_SYSROOT="" -CONFIG_EXTRA_CFLAGS="" +CONFIG_EXTRA_CFLAGS="-g" CONFIG_EXTRA_LDFLAGS="" CONFIG_EXTRA_LDLIBS="" # CONFIG_USE_PORTABLE_CODE is not set @@ -71,7 +71,7 @@ # # Debugging Options # -# CONFIG_DEBUG is not set +CONFIG_DEBUG=y # CONFIG_DEBUG_PESSIMIZE is not set # CONFIG_DEBUG_SANITIZE is not set # CONFIG_UNIT_TEST is not set
(In reply to Stephen Bell from comment #23) > (In reply to Eric Gravel from comment #22) > > Hi Thomas, I am trying to get you the information you need, but for some > > reason when building Busybox from Portage it seems to not take the > > /etc/portage/savedconfig/sys-apps/busybox-1.31.1-r2 config because I don't > > see '-mpreferred-stack-boundary=2' in the build log when > > 'CONFIG_STACK_OPTIMIZATION_386=y' is set. > > > > Here is my portage busybox USE flags: > > [ebuild R ] sys-apps/busybox-1.31.1-r2::gentoo USE="debug savedconfig > > static -ipv6 -livecd -make-symlinks -math -mdev -pam (-selinux) -sep-usr > > -syslog -systemd" 0 KiB > > > > > > With 'CONFIG_STACK_OPTIMIZATION_386=y' or 'CONFIG_STACK_OPTIMIZATION_386=n'. > > I have the same results. No segmentation fault > > See comment 7. The package build doesn't bypasses some of the busybox build > systme and uses the portage compile flags. I understood that. I was trying to reproduce the problem with the portage busybox and not busybox from genkernel. I must be doing it wrong.
Could you please include 'disassemble' and 'info registers' details?
(In reply to Thomas Deutschmann from comment #27) > Could you please include 'disassemble' and 'info registers' details? Dump of assembler code for function __run_exit_handlers: 0x08056060 <+0>: push %ebp 0x08056061 <+1>: push %edi 0x08056062 <+2>: push %esi 0x08056063 <+3>: push %ebx 0x08056064 <+4>: call 0x804a1c0 <__x86.get_pc_thunk.bx> 0x08056069 <+9>: add $0x203f97,%ebx 0x0805606f <+15>: sub $0x3c,%esp 0x08056072 <+18>: mov 0x58(%esp),%eax 0x08056076 <+22>: mov $0x0,%edx 0x0805607c <+28>: mov %eax,0x2c(%esp) 0x08056080 <+32>: mov %ebx,0x28(%esp) 0x08056084 <+36>: mov 0x5c(%esp),%eax 0x08056088 <+40>: test %edx,%edx 0x0805608a <+42>: je 0x8056094 <__run_exit_handlers+52> 0x0805608c <+44>: test %al,%al 0x0805608e <+46>: jne 0x8056310 <__run_exit_handlers+688> 0x08056094 <+52>: mov 0x28(%esp),%eax 0x08056098 <+56>: xor %esi,%esi 0x0805609a <+58>: mov $0x825d620,%ebp 0x080560a0 <+64>: mov %gs:0xc,%eax 0x080560a6 <+70>: mov $0x1,%edx 0x080560ab <+75>: test %eax,%eax 0x080560ad <+77>: jne 0x80562c9 <__run_exit_handlers+617> 0x080560b3 <+83>: cmpxchg %edx,0x0(%ebp) 0x080560b7 <+87>: mov 0x54(%esp),%eax 0x080560bb <+91>: mov (%eax),%eax 0x080560bd <+93>: mov %eax,0x24(%esp) 0x080560c1 <+97>: test %eax,%eax 0x080560c3 <+99>: jne 0x805611e <__run_exit_handlers+190> 0x080560c5 <+101>: jmp 0x8056264 <__run_exit_handlers+516> 0x080560ca <+106>: lea 0x0(%esi),%esi 0x080560d0 <+112>: cmp $0x2,%eax 0x080560d3 <+115>: je 0x80561c0 <__run_exit_handlers+352> 0x080560d9 <+121>: mov %gs:0xc,%eax 0x080560df <+127>: mov $0x1,%edx 0x080560e4 <+132>: test %eax,%eax 0x080560e6 <+134>: jne 0x80561e0 <__run_exit_handlers+384> 0x080560ec <+140>: cmpxchg %edx,0x0(%ebp) 0x080560f0 <+144>: mov 0x28(%esp),%eax 0x080560f4 <+148>: mov 0x361c(%eax),%edx 0x080560fa <+154>: mov 0x3618(%eax),%eax 0x08056100 <+160>: mov %edx,0x14(%esp) 0x08056104 <+164>: mov %eax,0x10(%esp) => 0x08056108 <+168>: vmovaps 0x10(%esp),%xmm1 0x0805610e <+174>: vxorps (%esp),%xmm1,%xmm0 0x08056113 <+179>: vpunpcklqdq %xmm0,%xmm0,%xmm0 0x08056117 <+183>: vptest %xmm0,%xmm0 0x0805611c <+188>: jne 0x80560b7 <__run_exit_handlers+87> 0x0805611e <+190>: mov 0x24(%esp),%eax 0x08056122 <+194>: mov 0x4(%eax),%edi 0x08056125 <+197>: test %edi,%edi 0x08056127 <+199>: je 0x8056230 <__run_exit_handlers+464> 0x0805612d <+205>: mov 0x24(%esp),%ecx 0x08056131 <+209>: lea -0x1(%edi),%eax 0x08056134 <+212>: mov %eax,0x4(%ecx) 0x08056137 <+215>: mov 0x28(%esp),%eax 0x0805613b <+219>: mov 0x361c(%eax),%edx 0x08056141 <+225>: mov 0x3618(%eax),%eax 0x08056147 <+231>: mov %edx,0x4(%esp) 0x0805614b <+235>: mov %eax,(%esp) 0x0805614e <+238>: mov %gs:0xc,%eax 0x08056154 <+244>: test %eax,%eax 0x08056156 <+246>: jne 0x8056200 <__run_exit_handlers+416> 0x0805615c <+252>: decl 0x0(%ebp) 0x0805615f <+255>: shl $0x4,%edi 0x08056162 <+258>: add 0x24(%esp),%edi 0x08056166 <+262>: mov -0x8(%edi),%eax 0x08056169 <+265>: cmp $0x3,%eax 0x0805616c <+268>: je 0x80561a0 <__run_exit_handlers+320> 0x0805616e <+270>: cmp $0x4,%eax 0x08056171 <+273>: jne 0x80560d0 <__run_exit_handlers+112> 0x08056177 <+279>: sub $0x8,%esp 0x0805617a <+282>: mov -0x4(%edi),%eax 0x0805617d <+285>: movl $0x0,-0x8(%edi) 0x08056184 <+292>: pushl 0x58(%esp) 0x08056188 <+296>: pushl (%edi) 0x0805618a <+298>: ror $0x9,%eax 0x0805618d <+301>: xor %gs:0x18,%eax 0x08056194 <+308>: call *%eax 0x08056196 <+310>: add $0x10,%esp 0x08056199 <+313>: jmp 0x80560d9 <__run_exit_handlers+121> 0x0805619e <+318>: xchg %ax,%ax 0x080561a0 <+320>: mov -0x4(%edi),%eax 0x080561a3 <+323>: ror $0x9,%eax 0x080561a6 <+326>: xor %gs:0x18,%eax 0x080561ad <+333>: call *%eax 0x080561af <+335>: jmp 0x80560d9 <__run_exit_handlers+121> 0x080561b4 <+340>: lea 0x0(%esi,%eiz,1),%esi 0x080561bb <+347>: lea 0x0(%esi,%eiz,1),%esi 0x080561bf <+351>: nop 0x080561c0 <+352>: sub $0x8,%esp 0x080561c3 <+355>: mov -0x4(%edi),%eax 0x080561c6 <+358>: pushl (%edi) 0x080561c8 <+360>: pushl 0x5c(%esp) 0x080561cc <+364>: ror $0x9,%eax 0x080561cf <+367>: xor %gs:0x18,%eax 0x080561d6 <+374>: call *%eax 0x080561d8 <+376>: add $0x10,%esp 0x080561db <+379>: jmp 0x80560d9 <__run_exit_handlers+121> 0x080561e0 <+384>: mov %esi,%eax 0x080561e2 <+386>: lock cmpxchg %edx,0x0(%ebp) 0x080561e7 <+391>: je 0x80560f0 <__run_exit_handlers+144> 0x080561ed <+397>: sub $0xc,%esp 0x080561f0 <+400>: push %ebp 0x080561f1 <+401>: call 0x806fa30 <__lll_lock_wait_private> 0x080561f6 <+406>: add $0x10,%esp 0x080561f9 <+409>: jmp 0x80560f0 <__run_exit_handlers+144> 0x080561fe <+414>: xchg %ax,%ax 0x08056200 <+416>: mov %esi,%eax 0x08056202 <+418>: xchg %eax,0x0(%ebp) 0x08056205 <+421>: cmp $0x1,%eax 0x08056208 <+424>: jle 0x805615f <__run_exit_handlers+255> 0x0805620e <+430>: mov $0x81,%ecx 0x08056213 <+435>: mov $0x1,%edx 0x08056218 <+440>: mov $0xf0,%eax 0x0805621d <+445>: mov %ebp,%ebx 0x0805621f <+447>: call *%gs:0x10 0x08056226 <+454>: jmp 0x805615f <__run_exit_handlers+255> 0x0805622b <+459>: lea 0x0(%esi,%eiz,1),%esi 0x0805622f <+463>: nop 0x08056230 <+464>: mov 0x54(%esp),%ecx 0x08056234 <+468>: mov %eax,%ebx 0x08056236 <+470>: mov (%eax),%eax 0x08056238 <+472>: mov %eax,(%ecx) 0x0805623a <+474>: test %eax,%eax 0x0805623c <+476>: je 0x805624e <__run_exit_handlers+494> 0x0805623e <+478>: sub $0xc,%esp 0x08056241 <+481>: push %ebx 0x08056242 <+482>: mov 0x38(%esp),%ebx 0x08056246 <+486>: call 0x8074eb0 <free> 0x0805624b <+491>: add $0x10,%esp 0x0805624e <+494>: mov %gs:0xc,%eax 0x08056254 <+500>: test %eax,%eax 0x08056256 <+502>: jne 0x80562e7 <__run_exit_handlers+647> 0x0805625c <+508>: decl 0x0(%ebp) 0x0805625f <+511>: jmp 0x80560a0 <__run_exit_handlers+64> 0x08056264 <+516>: mov 0x28(%esp),%eax 0x08056268 <+520>: movb $0x1,0x2ea5(%eax) 0x0805626f <+527>: mov %gs:0xc,%eax 0x08056275 <+533>: test %eax,%eax 0x08056277 <+535>: jne 0x805631a <__run_exit_handlers+698> 0x0805627d <+541>: decl 0x0(%ebp) 0x08056280 <+544>: cmpb $0x0,0x2c(%esp) 0x08056285 <+549>: je 0x80562b9 <__run_exit_handlers+601> 0x08056287 <+551>: mov 0x28(%esp),%eax 0x0805628b <+555>: mov $0x825b694,%esi 0x08056291 <+561>: mov $0x825b698,%eax 0x08056297 <+567>: cmp %eax,%esi 0x08056299 <+569>: jae 0x80562b9 <__run_exit_handlers+601> 0x0805629b <+571>: dec %eax 0x0805629c <+572>: sub %esi,%eax 0x0805629e <+574>: shr $0x2,%eax 0x080562a1 <+577>: lea 0x4(%esi,%eax,4),%edi 0x080562a5 <+581>: lea 0x0(%esi,%eiz,1),%esi 0x080562ac <+588>: lea 0x0(%esi,%eiz,1),%esi 0x080562b0 <+592>: call *(%esi) 0x080562b2 <+594>: add $0x4,%esi 0x080562b5 <+597>: cmp %esi,%edi 0x080562b7 <+599>: jne 0x80562b0 <__run_exit_handlers+592> 0x080562b9 <+601>: sub $0xc,%esp 0x080562bc <+604>: pushl 0x5c(%esp) 0x080562c0 <+608>: mov 0x38(%esp),%ebx 0x080562c4 <+612>: call 0x81e5dca <_exit> 0x080562c9 <+617>: mov %esi,%eax 0x080562cb <+619>: lock cmpxchg %edx,0x0(%ebp) 0x080562d0 <+624>: je 0x80560b7 <__run_exit_handlers+87> 0x080562d6 <+630>: sub $0xc,%esp 0x080562d9 <+633>: push %ebp 0x080562da <+634>: call 0x806fa30 <__lll_lock_wait_private> 0x080562df <+639>: add $0x10,%esp 0x080562e2 <+642>: jmp 0x80560b7 <__run_exit_handlers+87> 0x080562e7 <+647>: mov %esi,%eax 0x080562e9 <+649>: xchg %eax,0x0(%ebp) 0x080562ec <+652>: dec %eax 0x080562ed <+653>: jle 0x80560a0 <__run_exit_handlers+64> 0x080562f3 <+659>: mov $0xf0,%eax 0x080562f8 <+664>: mov $0x81,%ecx 0x080562fd <+669>: mov $0x1,%edx 0x08056302 <+674>: mov %ebp,%ebx 0x08056304 <+676>: call *%gs:0x10 0x0805630b <+683>: jmp 0x80560a0 <__run_exit_handlers+64> 0x08056310 <+688>: call 0x0 0x08056315 <+693>: jmp 0x8056094 <__run_exit_handlers+52> 0x0805631a <+698>: xor %esi,%esi 0x0805631c <+700>: mov %esi,%eax 0x0805631e <+702>: xchg %eax,0x0(%ebp) 0x08056321 <+705>: dec %eax 0x08056322 <+706>: jle 0x8056280 <__run_exit_handlers+544> 0x08056328 <+712>: mov $0xf0,%eax 0x0805632d <+717>: mov $0x81,%ecx 0x08056332 <+722>: mov $0x1,%edx 0x08056337 <+727>: mov %ebp,%ebx 0x08056339 <+729>: call *%gs:0x10 0x08056340 <+736>: jmp 0x8056280 <__run_exit_handlers+544>
(In reply to Stephen Bell from comment #28) > (In reply to Thomas Deutschmann from comment #27) > > Could you please include 'disassemble' and 'info registers' details? (gdb) info registers eax 0x1 1 ecx 0x825c7c0 136693696 edx 0x0 0 ebx 0x825a000 136683520 esp 0xbfffe98c 0xbfffe98c ebp 0x825d620 0x825d620 <__exit_funcs_lock> esi 0x0 0 edi 0x825b7b0 136689584 eip 0x8056108 0x8056108 <__run_exit_handlers+168> eflags 0x10246 [ PF ZF IF RF ] cs 0x73 115 ss 0x7b 123 ds 0x7b 123 es 0x7b 123 fs 0x0 0 gs 0x33 51
Thank you, backtrace/registers are confirming stack problem. Feel free to report upstream. CONFIG_STACK_OPTIMIZATION_386 is disabled in >=genkerel-4.1.1.
