With gentoo-sources 2.6.39 inserting a USB flash drive causes kernel error. This generally happens in 2 cases: 1. User is logged on in KDM, and a flash drive is inserted 2. During boot With 2.6.38-r6 this happens, too. But 2.6.37-r6 is perfectly good. I tried deleting 3rd party modules (VirtualBox's and nvidia), but this doesn't help. Error messages are on screenshots. Attaching kernel config as well. Reproducible: Always Portage 2.2.0_alpha37 (default/linux/amd64/10.0/desktop/kde, gcc-4.5.2, glibc-2.13-r2, 2.6.37-gentoo-r6melf x86_64) ================================================================= System uname: Linux-2.6.37-gentoo-r6melf-x86_64-AMD_Phenom-tm-_9650_Quad-Core_Processor-with-gentoo-2.0.2 Timestamp of tree: Fri, 03 Jun 2011 12:45:01 +0000 app-shells/bash: 4.2_p10 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.7.1-r1, 3.2 dev-util/cmake: 2.8.4-r1 sys-apps/baselayout: 2.0.2 sys-apps/openrc: 0.8.2-r1 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.68 sys-devel/automake: 1.9.6-r3, 1.10.3, 1.11.1-r1 sys-devel/binutils: 2.21 sys-devel/gcc: 4.5.2 sys-devel/gcc-config: 1.4.1-r1 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82 sys-kernel/linux-headers: 2.6.38 (virtual/os-headers) sys-libs/glibc: 2.13-r2 Repositories: gentoo calculate Installed sets: @kde, @system, @vim ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA PUEL skype-eula AdobeFlash-10.1 CANON" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=native -mtune=native" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/splash /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-O2 -pipe -march=native -mtune=native" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests binpkg-logs distlocks ebuild-locks fixlafiles fixpackages news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="" GENTOO_MIRRORS="http://gentoo.bloodhost.ru/ http://mirror.yandex.ru/gentoo-distfiles/ http://trumpetti.atm.tut.fi/gentoo/" LANG="ru_RU.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en en_GB ru ja" MAKEOPTS="-j5" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" 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="/var/lib/layman/calculate" SYNC="rsync://gentoo.bloodhost.ru/gentoo-portage/" USE="3dnow X a52 aac acl acpi alsa amd64 anthy bash-completion bluetooth branding bzip2 cairo cdr cjk cli consolekit cracklib crypt cups cxx dbus directfb djvu dri dts dvd dvdr emboss encode exif fam fbcon ffmpeg firefox flac fortran gdbm gdu gif glitz gpm gstreamer gtk iconv idn immqt-bc ipv6 jpeg kde lame lcms libcaca libnotify lm_sensors m17n-lib mad matroska mmx mng modules mp3 mp4 mpeg mplayer mudflap multilib ncurses nls nptl nptlonly ogg opengl openmp pam pango pcre pdf perl png policykit ppds pppd python qt3support qt4 raw readline sdl semantic-desktop session spell sse sse2 ssl startup-notification svg sysfs tcpd tiff truetype udev unicode usb vdpau vorbis x264 xcb xcomposite xml xorg xscreensaver xulrunner xv xvid 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_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="braindump flow karbon kexi kpresenter krita tables words" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en en_GB ru ja" NGINX_MODULES_HTTP="access auth_basic autoindex browser charset empty_gif fastcgi geo gzip limit_req limit_zone map memcached proxy referer rewrite scgi split_clients ssi upstream_ip_hash userid uwsgi flv" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="vesa nvidia" 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: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Created attachment 275709 [details] general error
Created attachment 275711 [details] error during boot
Created attachment 275713 [details] during boot - another example
Created attachment 275715 [details] 2.6.39 config file
There was an oops bug affecting USB sticks fixed in 2.6.39.1 so that version might be worth trying, though your oops message looks more like this bug which is still in 'open' state https://bugzilla.kernel.org/show_bug.cgi?id=36712
Yes, vanilla 2.6.39.1 solved my problem. Waiting for the fix to appear in gentoo-sources.
Paul, can you please test with gentoo-sources-2.6.39-r1 ?
Testing with gentoo-sources-2.6.39-r1 was a success