Created attachment 348662 [details] Kernel crash camera screenshot Steps to replicate: Use virt-manager/libvirt/qemu-kvm to create a guest gentoo in a virtual machine. Set up host networking to use macvlan on top of the eth device (may not be necessary but here for completeness), and set the guest to use macvtap on top of the eth device. Install ssh server in the guest. Connect to guest ssh server from a remote machine (not the host machine - communication within host to vm works fine). Perform an action that causes lots of text to be sent out from the guest (I use cd /; find). Host kernel instantly crashes, hard reboot needed. I attempted to bisect this but repeated crashes are causing all kinds of grief with my RAID array and many of the kernels git gives me are not able to perform the test, so I'm reporting this without bisection results. gentoo-sources 3.8.5: NOT affected gentoo-sources 3.9.0: Affected gentoo-sources 3.9.1: Affected gentoo-sources 3.9.2: Affected Attached is screenshot of one possible crash. There is another that can happen where many OOPS roll across the screen and I cannot see the first one. Kernel always dies at the end. Attaching affected kernel .config next
Created attachment 348664 [details] .config from 3.9.2 for host kernel
Created attachment 348666 [details] .conifg for guest kernel (used 3.9.1, version presumed unimportant)
Portage 2.1.11.62 (default/linux/amd64/13.0, gcc-4.6.3, glibc-2.15-r3, 3.8.5-gentoo x86_64) ================================================================= System uname: Linux-3.8.5-gentoo-x86_64-AMD_A8-5600K_APU_with_Radeon-tm-_HD_Graphics-with-gentoo-2.2 KiB Mem: 32285684 total, 30858732 free KiB Swap: 0 total, 0 free Timestamp of tree: Sun, 19 May 2013 05:00:01 +0000 ld GNU ld (GNU Binutils) 2.22 app-shells/bash: 4.2_p45 dev-java/java-config: 2.1.12-r1 dev-lang/python: 2.7.3-r3, 3.2.3-r2 dev-util/cmake: 2.8.10.2-r2 dev-util/pkgconfig: 0.28 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.11.8 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.11.6, 1.12.6 sys-devel/binutils: 2.22-r1 sys-devel/gcc: 4.5.4, 4.6.3 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.7 (virtual/os-headers) sys-libs/glibc: 2.15-r3 Repositories: gentoo x11 x-portage-freedink ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe -fomit-frame-pointer" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/polkit-1/actions" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /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="-march=native -O2 -pipe -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j4" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/var/lib/layman/x11 /usr/local/portage-freedink" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X aac aacplus acl alsa amd64 asf avx berkdb bindist bzip2 cairo cli cracklib crypt cups cxx dri egl equalizer faac ffmpeg flac fontforge fortran gdbm gif gpm iconv ipv6 jpeg jpeg2k jpg kde libsamplerate lzma mad mms mmx mmxext mng modplug modules mp3 mp4 mudflap multilib ncurses nls nptl ogg opengl openmp openvg pam pcre png pulseaudio qt3support readline session sndfile speex sse sse2 sse4_1 ssl ssse3 svg tcpd theora tiff truetype unicode v4l vaapi vdpau vorbis x264 xvid zlib" ABI_X86="64" 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="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="kexi words flow plan sheets stage tables krita karbon braindump author" 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" GRUB_PLATFORMS="efi-64 pc emu" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer pdfimport" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-3" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" RUBY_TARGETS="ruby18 ruby19" USERLAND="GNU" VIDEO_CARDS="radeon r600" 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, LANG, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Appears fixed in 3.10.1 (haven't tested 3.10.0).
