Sometimes apache segfaults somewhere in mod_php with the following error message: [Thu Mar 04 16:45:45 2010] [notice] child pid 10008 exit signal Segmentation fault (11) zend_mm_heap corrupted It seems it's somewhat known issue (I've attached upstream bug). I'm currently evaluating workaround proposed there (to disable zend memory manager at runtime). Also, it happens occasionally to produce crashes even without apache (for instance in phpunit test runs here). maciek@lebrodyl ~ $ emerge --info Portage 2.2_rc64 (default/linux/amd64/10.0, gcc-4.3.4, glibc-2.10.1-r1, 2.6.31-gentoo-r6 x86_64) ================================================================= System uname: Linux-2.6.31-gentoo-r6-x86_64-Intel-R-_Pentium-R-_4_CPU_3.20GHz-with-gentoo-2.0.1 Timestamp of tree: Unknown ccache version 2.4 [enabled] app-shells/bash: 4.0_p35 dev-java/java-config: 2.1.10 dev-lang/python: 2.6.4 dev-util/ccache: 2.4-r7 dev-util/cmake: 2.6.4-r3 sys-apps/baselayout: 2.0.1 sys-apps/openrc: 0.6.0-r1 sys-apps/sandbox: 2.2 sys-devel/autoconf: 2.63-r1 sys-devel/automake: 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.18-r3 sys-devel/gcc: 4.3.4 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6b virtual/os-headers: 2.6.30-r1 ABI="amd64" ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA PUEL dlj-1.1 skype-eula" ACCEPT_PROPERTIES="*" 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 mmap_emul mulaw multi null plug rate route share shm softvol" ANT_HOME="/usr/share/ant" APACHE2_MODULES="actions alias auth_digest authn_anon authn_dbd authn_default authn_file authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif so speling status unique_id userdir usertrack vhost_alias" APACHE_MPMS="worker" ARCH="amd64" ASFLAGS_x86="--32" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CCACHE_DIR="/var/tmp/ccache" CDEFINE_amd64="__x86_64__" CDEFINE_x86="__i386__" CFLAGS="-march=native -O2 -pipe -ftree-vectorize" CFLAGS_x86="-m32" CHOST="x86_64-pc-linux-gnu" CHOST_amd64="x86_64-pc-linux-gnu" CHOST_x86="i686-pc-linux-gnu" CLEAN_DELAY="5" COLLISION_IGNORE="/lib/modules" COLORFGBG="15;0" CONFIG_PROTECT="/etc /usr/share/X11/xkb /usr/share/config" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/eselect/postgresql /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /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 /etc/udev/rules.d" CVS_RSH="ssh" CXXFLAGS="-march=native -O2 -pipe -ftree-vectorize" DBUS_SESSION_BUS_ADDRESS="unix:abstract=/tmp/dbus-r4zVFMSUZg,guid=2e1daec417803eb6e236ef9f4b8eb0ff" DEFAULT_ABI="amd64" DESKTOP_SESSION="default" DISPLAY=":0.0" DISTDIR="/usr/portage/distfiles" DM_CONTROL="/var/run/xdmctl" ECHANGELOG_USER="Maciej Mrozowski <reavertm@gentoo.org>" EDITOR="/bin/nano" EGIT_QUIET="1" ELIBC="glibc" EMERGE_DEFAULT_OPTS="--deep --with-bdeps n --ask --verbose" EMERGE_WARNING_DELAY="10" EPREFIX="" EROOT="/" ESVN_OFFLINE="1" FEATURES="assume-digests ccache collision-protect distlocks fixpackages metadata-transfer multilib-strict news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch userpriv usersandbox" FETCHCOMMAND="/usr/bin/wget --progress=bar:force -t 3 -T 60 --passive-ftp -O "${DISTDIR}/${FILE}" "${URI}"" GDK_USE_XFT="1" GENTOO_MIRRORS="ftp://ftp.vectranet.pl/gentoo ftp://ftp.uni-erlangen.de/pub/mirrors/gentoo/" GS_LIB="/home/maciek/.fonts" GTK2_RC_FILES="/etc/gtk-2.0/gtkrc:/home/maciek/.gtkrc-2.0:/home/maciek/.kde4/share/config/gtkrc-2.0" GTK_RC_FILES="/etc/gtk/gtkrc:/home/maciek/.gtkrc::/home/maciek/.kde4/share/config/gtkrc" HG="/usr/bin/hg" HOME="/home/maciek" INFOPATH="/usr/share/info:/usr/share/binutils-data/x86_64-pc-linux-gnu/2.18/info:/usr/share/gcc-data/x86_64-pc-linux-gnu/4.3.4/info" INPUT_DEVICES="evdev keyboard" JAVAC="/etc/java-config-2/current-system-vm/bin/javac" JAVA_HOME="/etc/java-config-2/current-system-vm" JDK_HOME="/etc/java-config-2/current-system-vm" KDE_FULL_SESSION="true" KDE_MULTIHEAD="false" KDE_SESSION_UID="1000" KDE_SESSION_VERSION="4" KERNEL="linux" KONSOLE_DBUS_SERVICE=":1.552" KONSOLE_DBUS_SESSION="/Sessions/1" LANG="en_US.utf8" LANGUAGE="" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LC_ALL="en_US.utf8" LDFLAGS="-Wl,--as-needed" LDFLAGS_x86="-m elf_i386" LESS="-R -M --shift 5" LESSOPEN="|lesspipe.sh %s" LIBDIR_amd64="lib64" LIBDIR_amd64_fbsd="lib64" LIBDIR_ppc="lib32" LIBDIR_ppc64="lib64" LIBDIR_sparc32="lib32" LIBDIR_sparc64="lib64" LIBDIR_x86="lib32" LIBDIR_x86_fbsd="lib32" LINGUAS="" LOGNAME="maciek" LS_COLORS="rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.pdf=00;32:*.ps=00;32:*.txt=00;32:*.patch=00;32:*.diff=00;32:*.log=00;32:*.tex=00;32:*.doc=00;32:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:" MAKEOPTS="-j2" MANPATH="/etc/java-config-2/current-system-vm/man:/usr/local/share/man:/usr/share/man:/usr/share/binutils-data/x86_64-pc-linux-gnu/2.18/man:/usr/share/gcc-data/x86_64-pc-linux-gnu/4.3.4/man:/etc/java-config/system-vm/man/:/usr/lib64/php5/man/:/usr/share/postgresql-8.4/man:/opt/opera/share/man" MULTILIB_ABIS="amd64 x86" MULTILIB_STRICT_DENY="64-bit.*shared object" MULTILIB_STRICT_DIRS="/lib32 /lib /usr/lib32 /usr/lib /usr/kde/*/lib32 /usr/kde/*/lib /usr/qt/*/lib32 /usr/qt/*/lib /usr/X11R6/lib32 /usr/X11R6/lib" MULTILIB_STRICT_EXEMPT="(perl5|gcc|gcc-lib|binutils|eclipse-3|debug|portage)" NETBEANS="apisupport cnd groovy gsf harness ide identity j2ee java mobility nb php profiler soa visualweb webcommon websvccommon xml" OPENGL_PROFILE="nvidia" PAGER="/usr/bin/less" PATH="/usr/local/bin:/usr/bin:/bin:/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.3.4:/usr/games/bin:/home/maciek/bin:/home/maciek/kde4/bin" PKGDIR="/usr/portage/packages" PORTAGE_ARCHLIST="ppc x86-openbsd ppc-openbsd ppc64 x86-winnt x86-fbsd ppc-aix alpha arm x86-freebsd s390 amd64 arm-linux x86-macos x64-openbsd ia64-hpux hppa x86-netbsd amd64-linux ia64-linux x86 sparc-solaris x64-freebsd sparc64-solaris x86-linux x64-macos sparc m68k-mint ia64 mips ppc-macos x86-interix hppa-hpux amd64-fbsd x64-solaris mips-irix m68k sh x86-solaris sparc-fbsd" PORTAGE_BINHOST_CHUNKSIZE="3000" PORTAGE_BIN_PATH="/usr/lib64/portage/bin" PORTAGE_COMPRESS_EXCLUDE_SUFFIXES="css gif htm[l]? jp[e]?g js pdf png" PORTAGE_CONFIGROOT="/" PORTAGE_DEBUG="0" PORTAGE_DEPCACHEDIR="/var/cache/edb/dep" PORTAGE_ELOG_CLASSES="log warn error" PORTAGE_ELOG_MAILFROM="portage@localhost" PORTAGE_ELOG_MAILSUBJECT="[portage] ebuild log for ${PACKAGE} on ${HOST}" PORTAGE_ELOG_MAILURI="root" PORTAGE_ELOG_SYSTEM="save_summary echo" PORTAGE_FETCH_CHECKSUM_TRY_MIRRORS="5" PORTAGE_FETCH_RESUME_MIN_SIZE="350K" PORTAGE_GID="250" PORTAGE_INST_GID="0" PORTAGE_INST_UID="0" PORTAGE_PYM_PATH="/usr/lib64/portage/pym" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_RSYNC_RETRIES="3" PORTAGE_TMPDIR="/var/tmp" PORTAGE_VERBOSE="1" PORTAGE_WORKDIR_MODE="0700" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage/reavertm /usr/local/portage/kde-testing /usr/local/portage/qting-edge" PROFILEHOME="" PROFILE_ONLY_VARIABLES="ARCH ELIBC KERNEL USERLAND" PWD="/home/maciek" PYTHONDONTWRITEBYTECODE="1" QT_PLUGIN_PATH="/home/maciek/.kde4/lib64/kde4/plugins/:/usr/lib64/kde4/plugins/" RESUMECOMMAND="/usr/bin/wget -c --progress=bar:force -t 3 -T 60 --passive-ftp -O "${DISTDIR}/${FILE}" "${URI}"" ROOT="/" ROOTPATH="/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.3.4" RPMDIR="/usr/portage/rpm" RUBY_TARGETS="ruby18" SANE_CONFIG_DIR="/etc/sane.d" SESSION_MANAGER="local/lebrodyl:@/tmp/.ICE-unix/6390,unix/lebrodyl:/tmp/.ICE-unix/6390" SHELL="/bin/bash" SHLVL="2" SSH_AGENT_PID="6363" SSH_AUTH_SOCK="/tmp/ssh-DNXdoN6362/agent.6362" STAGE1_USE="multilib nptl nptlonly unicode" STRIGI_PLUGIN_PATH="/usr/lib64/strigi:" SYMLINK_LIB="yes" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" TERM="xterm" TZ="Europe/Warsaw" USB_DEVFS_PATH="/dev/bus/usb" USE="7zip a52 aac accessibility ace acpi additions alsa amd64 archive autoipd bash-completion bittorrent branding bzip2 cddb chm cli clucene colordiff cracklib crypt cups curl dbus designer-plugin dirac divx dri dv dvd dvdr dvdread dynamic encode exif exiv2 ffmpeg flac fontconfig ftp gadu gd gif git glibc-omitfp gnokii gphoto2 history iconv inotify java6 javascript jpeg kde kde-qt kdehiddenvisibility kdexdeltas kickoff libgadu lm_sensors lzma lzo mad mbox mng modules mp3 mplayer mudflap multilib ncurses no-net2 nolvm1 nonfsv4 nptl nptlonly ogg openal openexr opengl openmp pam pcre pdf pg-intdatetime plasma png pppd qt3support qt4 quicktime rar rdesktop readline reiserfs rtc semantic-desktop session sha512 sms sndfile sockets spell spl srt sse sse2 ssl svg symlink sysfs theora threads threadsonly tiff toolkit-scroll-bars truetype unicode urandom usb utempter vnc voice vorbis webkit x264 xattr xcb xcomposite xinerama xorg xpm xv xvid xvmc zeroconf zip 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 mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_digest authn_anon authn_dbd authn_default authn_file authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif so speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="evdev keyboard" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="nvidia" USER="maciek" USERLAND="GNU" USE_EXPAND="ALSA_CARDS ALSA_PCM_PLUGINS APACHE2_MODULES APACHE2_MPMS CAMERAS CROSSCOMPILE_OPTS DVB_CARDS ELIBC FCDSL_CARDS FOO2ZJS_DEVICES FRITZCAPI_CARDS INPUT_DEVICES KERNEL LCD_DEVICES LINGUAS LIRC_DEVICES MISDN_CARDS NETBEANS_MODULES QEMU_SOFTMMU_TARGETS QEMU_USER_TARGETS RUBY_TARGETS SANE_BACKENDS USERLAND VIDEO_CARDS" USE_EXPAND_HIDDEN="CROSSCOMPILE_OPTS ELIBC KERNEL USERLAND" USE_ORDER="env:pkg:conf:defaults:pkginternal:env.d" VIDEO_CARDS="nvidia" WGET_COMMON="--progress=bar:force -t 3 -T 60 --passive-ftp -O "${DISTDIR}/${FILE}" "${URI}"" WINDOWID="83886103" WINDOWPATH="7" XCURSOR_THEME="Oxygen_Black" XDG_CONFIG_DIRS="/etc/xdg" XDG_DATA_DIRS="/usr/share:/usr/local/share:/usr/share" XDM_MANAGED="method=classic" XSESSION="KDE-4" _="/usr/bin/emerge" bash4="4.0.35(2)-release"
Created attachment 222043 [details] php.ini just for reference Other active extensions: pecl-apc (php crashes without it as well) xdebug pecl-ssh2
Hmm, I see disabling zend memory manager doesn't make it... and still there are crashes. One note, it happens on both http and https.
maybe this is a threaded MPM issue? have you tried using prefork?
I'll see, maybe when it crashes with prefork I'll be able to actually obtain any backtrace...
you can try to use -X on the apache commandline to get a backtrace. this forces apache to stay in foreground and not spawn any child processes
Just a quick info, indeed prefork seems to fix instability issues for me, I'll try to obtain some backtrace later on though
(In reply to comment #6) > Just a quick info, indeed prefork seems to fix instability issues for me, I'll > try to obtain some backtrace later on though > Have you learned anything else? I am having this exact same issue.
