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Bug 198494 - baselayout-2.0.0_rc6 causes vservers to segfault on shutdown
Summary: baselayout-2.0.0_rc6 causes vservers to segfault on shutdown
Status: RESOLVED INVALID
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] baselayout (show other bugs)
Hardware: All Linux
: High normal (vote)
Assignee: Gentoo's Team for Core System packages
URL:
Whiteboard:
Keywords:
Depends on:
Blocks: 201578
  Show dependency tree
 
Reported: 2007-11-08 21:45 UTC by Tom Hendrikx
Modified: 2008-03-11 12:44 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---

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Description Tom Hendrikx 2007-11-08 21:45:54 UTC 
Since the upgrade to baselayout-2.0.0_rc6 vserver guests tend to segfault upon shutdown: 

tomhendr@elaine $ sudo vserver my-vserver stop
/usr/lib/util-vserver/vserver.stop: line 85:  7872 Segmentation fault      "${NICE_CMD[@]}" "${CHBIND_CMD[@]}" "$_VTAG" --migrate "${OPTS_VTAG_ENTER[@]}" --silent -- $_VCONTEXT $SILENT_OPT --migrate --chroot --xid "$S_CONTEXT" -- "${INITCMD_STOP[@]}"
A timeout occured while waiting for the vserver to finish and it will
be killed by sending a SIGKILL signal. The following process list
might be useful for finding out the reason of this behavior:

----------------------------------------------------------------------
----------------------------------------------------------------------
tomhendr@elaine $

The only package upgraded when this started to appear, was baselayout in the guest, so while this is a segfault of the host systems' vserver.stop, I still suspect the guests baselayout to cause the problem. I can reproduce this on two separate x86 machines, a hardened server setup and a regular desktop.

The host runs completely stable gentoo, the guest runs stable gentoo with the exception of (which is not optional for vserver): baselayout-2.0.0_rc6 and makedev-3.23.1.

host system' info:
Portage 2.1.3.16 (default-linux/x86/2007.0, gcc-4.1.2, glibc-2.6.1-r0, 2.6.20-vs2.2.0-gentoo i686)
=================================================================
System uname: 2.6.20-vs2.2.0-gentoo i686 AMD Athlon(TM) XP 2000+
Timestamp of tree: Thu, 08 Nov 2007 20:17:01 +0000
app-shells/bash:     3.2_p17
dev-lang/python:     2.4.4-r6
dev-python/pycrypto: 2.0.1-r6
sys-apps/baselayout: 2.0.0_rc6
sys-apps/sandbox:    1.2.18.1-r2
sys-devel/autoconf:  2.61-r1
sys-devel/automake:  1.10
sys-devel/binutils:  2.18-r1
sys-devel/gcc-config: 1.3.16
sys-devel/libtool:   1.5.24
virtual/os-headers:  2.6.22-r2
ACCEPT_KEYWORDS="x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O2 -pipe"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/env.d /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-march=athlon-xp -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--usepkg"
FEATURES="collision-protect distlocks fixpackages metadata-transfer parallel-fetch sandbox sfperms strict unmerge-orphans userfetch userpriv usersandbox"
GENTOO_MIRRORS="ftp://mirror.muntinternet.net/pub/gentoo ftp://ftp.snt.utwente.nl/pub/os/linux/gentoo"
LINGUAS="en en_GB"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --filter=H_**/files/digest-*"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/portage/local/tomhendrikx.nl"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="bitmap-fonts bzip2 cracklib crypt cups dri fortran gdbm iconv mudflap ncurses nls nptl nptlonly openmp pam pcre python readline ssl tcpd truetype-fonts type1-fonts unicode usb x86 xorg zlib" ALSA_CARDS="via82xx" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route share shm softvol" ELIBC="glibc" INPUT_DEVICES="mouse keyboard" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en en_GB" USERLAND="GNU" VIDEO_CARDS="mga"
Unset:  CPPFLAGS, CTARGET, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS


guest systems' info:
Portage 2.1.3.16 (default-linux/x86/2007.0, gcc-4.1.2, glibc-2.6.1-r0, 2.6.20-vs2.2.0-gentoo i686)
=================================================================
System uname: 2.6.20-vs2.2.0-gentoo i686 AMD Athlon(TM) XP 2000+
Timestamp of tree: Thu, 08 Nov 2007 20:17:01 +0000
app-shells/bash:     3.2_p17
dev-lang/python:     2.4.4-r6
dev-python/pycrypto: 2.0.1-r6
sys-apps/baselayout: 2.0.0_rc6
sys-apps/sandbox:    1.2.18.1-r2
sys-devel/autoconf:  2.61-r1
sys-devel/automake:  1.10
sys-devel/binutils:  2.18-r1
sys-devel/gcc-config: 1.3.16
sys-devel/libtool:   1.5.24
virtual/os-headers:  2.6.22-r2
ACCEPT_KEYWORDS="x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O2 -pipe"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/env.d /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-march=athlon-xp -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--usepkg"
FEATURES="collision-protect distlocks fixpackages metadata-transfer parallel-fetch sandbox sfperms strict unmerge-orphans userfetch userpriv usersandbox"
GENTOO_MIRRORS="ftp://mirror.muntinternet.net/pub/gentoo ftp://ftp.snt.utwente.nl/pub/os/linux/gentoo"
LINGUAS="en en_GB"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --filter=H_**/files/digest-*"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/portage/local/tomhendrikx.nl"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="bitmap-fonts bzip2 cracklib crypt cups dri fortran gdbm iconv mudflap ncurses nls nptl nptlonly openmp pam pcre python readline ssl tcpd truetype-fonts type1-fonts unicode usb x86 xorg zlib" ALSA_CARDS="via82xx" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route share shm softvol" ELIBC="glibc" INPUT_DEVICES="mouse keyboard" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en en_GB" USERLAND="GNU" VIDEO_CARDS="mga"
Unset:  CPPFLAGS, CTARGET, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

Could be related to #198143 (since I'm running lvm) or #198380 (segfault).

In the meantime please put rc5 back in the tree, since vserver guests require a 2.0.0 baselayout.
Comment 1 Roy Marples (RETIRED) gentoo-dev 2007-12-06 11:20:39 UTC 
Well, if it is timeout related then openrc may fix things for you as you can now do this

depend() {
   keywords notimeout
}

Which means that when a service depends on a service with that keyword then it will wait indefinitely until it finishes.

If that doesn't fix it then vserver devs will have to.
Comment 2 Tom Hendrikx 2008-03-11 12:44:52 UTC 
I'm still not sure what caused this, but yesterday I upgraded one of my production servers with the old baselayout, to get some more proress on this bug. To my surprise, everything worked fine. 2 other vhosts done after that, none of them had earlier mentioned problems.

This means that I can no longer reproduce the bug (no old vservers left), and it doesn't seem to cause ant problems any more. Earlier this month I rebooted into a new kernel (vmsplice() yadday yadda), which may have helped. 

Anyhow, resolving this one as invalid, when no one objects...