'modprobe vboxdrv' results in: root@condor:/root(36)# modprobe vboxdrv FATAL: Error inserting vboxdrv (/lib/modules/2.6.25/misc/vboxdrv.ko): Unknown symbol in module, or unknown parameter (see dmesg) root@condor:/root(38)# dmesg | tail -3 usb0: unregister 'zaurus' usb-0000:00:1d.0-2, Sharp Zaurus SL-5x00 vboxdrv: Unknown symbol change_page_attr vboxdrv: Unknown symbol change_page_attr Reproducible: Always root@condor:/root(39)# emerge --info Portage 2.1.5_rc6 (default-linux/amd64/2007.0, gcc-4.2.3, glibc-2.7-r2, 2.6.25 x86_64) ================================================================= System uname: 2.6.25 x86_64 Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz Timestamp of tree: Tue, 22 Apr 2008 09:34:01 +0000 distcc 2.18.3 x86_64-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] app-shells/bash: 3.2_p33 dev-java/java-config: 1.3.7, 2.1.5 dev-lang/python: 2.4.4-r11, 2.5.2-r2 dev-python/pycrypto: 2.0.1-r6 sys-apps/baselayout: 2.0.0 sys-apps/openrc: 0.2.2 sys-apps/sandbox: 1.2.18.1-r2 sys-devel/autoconf: 2.13, 2.62 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1 sys-devel/binutils: 2.18-r1 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 1.5.26 virtual/os-headers: 2.6.25-r1 ACCEPT_KEYWORDS="amd64 ~amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/e xt-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-march=nocona -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="buildpkg distlocks fixpackages parallel-fetch sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" LDFLAGS="" LINGUAS="de fr" MAKEOPTS="-j1" PKGDIR="/usr/portage/packages/All" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles -- exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/portage/local/layman/arcon /usr/portage/local/layman/science /usr/portage/local/layman/sajinet /usr/local/portage /usr/local/portage/ xeffects /usr/local/sci" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X Xaw3d a52 aac acl acpi administrator afs aiglx alsa amd64 amrr ao aotuv apache2 asf atlas auctex audacious audiofile automount bash-completion beagl e berkdb bjam blas bluetooth bonobo boo boost bzip2 c++ cairo cdda cddb cdf cdio cdparanoia cdr cgi chm cli corba cracklib cran crypt cups curl daap dbus d evice-mapper dga dia divx djvu dlloader dmi dri ds3490 dv dvb dvd dvdr dvi dxr3 dynagraph eds effects elf emacs emboss encode epiphany esd evo examples exi f expat extra fam fame ffmpeg fftw firefox fits flac fltk foomaticdb fortran fpx galago gd gdal gdbm geos gif gimp gimpprint ginac glade glitz gml gmp gnok ii gnome gnuplot gnutls gphoto2 gpm graphics graphviz gs gsl gsm gstreamer gtk guile hal hardened hddtemp hdf hdf5 hlapi http hvm iconv icq icu id3 imagema gick imap innodb ipv6 irda irmc isdnlog ithreads jabber java jbig john jpeg jpeg2k kerberos kexi keyring ladspa lame lapack latex lcms ldap libgda libsampl erate lirc lm_sensors lua lzo lzw mad maildir math matroska midi mmx mmxext mng mod mono motif mozdevelop mozilla mozsvg mozxmlterm mp3 mp4 mp4live mpeg mp eg2 mplayer mudflap musicbrainz mysql mysqli nautilus ncurses neXt netcdf netpbm network networkmanager nfs nls nntp nptl nptlonly nsplugin ntfs numarray n umeric nvidia obex ocaml octave odbc ogdi ogg ole opengl openmp pae pam pcre pda pdf perl plotutils plugins png posix postgres postscript pppd preview-late x proj projectx pstricks python qhull quicktime readline reflection reiserfs rhythmbox rle rpc rrdcgi rrdtool samba sasl science sdl session slang slp smp sndfile snmp soup sox speex spell spl sqlite sse sse2 ssl stlport subtitles subversion suexec svg t1lib tcl tcpd tex theora threads thunderbird tidy tiff t k truetype unicode userlocales utempter v4l2 vorbis wmf wxwindows xattr xemacs xext xine xml xmlreader xmlrpc xorg xpm xv xvid xvmc zlib zvbi" ALSA_CARDS=" intel8x0" 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" APACHE2_MODULES="actions alias auth_basic auth_digest authn_anon authn_dbd authn_dbm authn_default authn_file authz_dbm auth z_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_cach e filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif so speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse " KERNEL="linux" LC D_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="de fr" USERLAND="GNU" VIDEO_CARDS="nv nvidia vesa fbdev" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
I found the reason. kvm was compiled into the kernel. After compiling kvm as a module, I could install the vboxdrv module.
