I was getting the following message: May 24 12:01:17 [kernel] grsec: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/bin/qemu-system-x86_64[qemu-system-x86:6602] uid/euid:1001/1001 gid/egid:1001/1001, parent /usr/bin/aqemu[aqemu:6336] uid/euid:1001/1001 gid/egid:1001/1001 The issue is fixed by upgrading to the next version: app-emulation/qemu-1.4.1 emerge --info Portage 2.1.11.62 (pentoo/hardened/linux/amd64, gcc-4.6.3, glibc-2.15-r3, 3.8.6-pentoo x86_64) ================================================================= System uname: Linux-3.8.6-pentoo-x86_64-Intel-R-_Core-TM-_i5-3320M_CPU_@_2.60GHz-with-gentoo-2.2 KiB Mem: 7980720 total, 579492 free KiB Swap: 4194300 total, 4191136 free Timestamp of tree: Thu, 23 May 2013 23:15:01 +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::pentoo sys-apps/sandbox: 2.6-r1 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.4_p6-r1, 1.11.6, 1.12.6 sys-devel/binutils: 2.22-r1 sys-devel/gcc: 4.6.3 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4-r4 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.7 (virtual/os-headers) sys-libs/glibc: 2.15-r3 Repositories: gentoo pentoo steam-overlay local-overlay ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA PUEL AdobeFlash-11.x Google-TOS dlj-1.1 google-chrome Oracle-BCLA-JavaSE Intel-SDP" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=core2 -mtune=generic -O2 -pipe" 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/php/apache2-php5.4/ext-active/ /etc/php/cgi-php5.4/ext-active/ /etc/php/cli-php5.4/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" CXXFLAGS="-march=core2 -mtune=generic -O2 -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="" FCFLAGS="-O2 -pipe -frecord-gcc-switches" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe -frecord-gcc-switches" GENTOO_MIRRORS="http://mirror.nus.edu.sg/gentoo" INSTALL_MASK="*.la" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu" MAKEOPTS="-j4" PKGDIR="/usr/portage/packages" PORTAGE_BZIP2_COMMAND="lbzip2" 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/pentoo /var/lib/layman/steam /usr/local/portage" SYNC="rsync://rsync6.tw.gentoo.org/gentoo-portage/" USE="X a52 aac acl acpi adns alsa amd64 berkdb branding bzip2 cairo caps cdda cli consolekit cracklib crypt cups curl cxx dbus directfb dri dts dvdr emboss encode exif fbcon firefox flac fortran gdbm gif gpm gtk hardened iconv ipv6 jack jpeg justify kde lcms libnotify lm_sensors lua lzma mad mmx mng modules mp3 mp4 mpeg mudflap multilib ncurses networkmanager nls nptl ogg opengl openmp orc oss pam pango pax_kernel pcre pdf perl png policykit ppds pulseaudio python qt3support qt4 readline ruby samba sdl session spell sqlite sse sse2 ssl startup-notification subversion svg tcpd tiff truetype udev udisks unicode upower urandom usb vorbis wxwidgets x264 xattr xcb xinerama xml xv xvid zlib" ABI_X86="32 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="coreboot efi-32 efi-64 emu multiboot pc qemu" INPUT_DEVICES="evdev keyboard mouse synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="pdfimport" LINGUAS="en ru" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-3" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" QEMU_SOFTMMU_TARGETS="arm i386 x86_64" QEMU_USER_TARGETS="arm i386 x86_64" RUBY_TARGETS="ruby18 ruby19" USERLAND="GNU" VIDEO_CARDS="fbdev vesa intel" XFCE_PLUGINS="brightness menu logout trash" 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, LANG, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Over to hardened for their opinions and decoding.
Well, that is usually caused by a crash, not really specific to hardened. Anything show up in dmesg other then that? If not then I imagine that it was just a internal crash of the program (not caused by grsec/pax).
This is the only message in the dmesg. I'd suggest to stabilize that version sooner.
(In reply to Anton Bolshakov from comment #3) > This is the only message in the dmesg. I'd suggest to stabilize that version > sooner. Matt's right. The hardened kernel simply reports RLIMIT_* overstepping, but it is not the cause of it. In this case qemu wanted to dump a core which is bigger than 0 bytes (surprise!) and grsec reported it. The question is what cause the crash. Can you post an strace -f.
(In reply to Anthony Basile from comment #4) > The question is what cause the crash. Can you post an strace -f. Pardon me for asking, but why you are willing to waste time on that? Are you going to backport a patch from 1.4.1?
Found an error message in the aqemu error log window: qemu-system-x86_64: /var/tmp/portage/app-emulation/qemu-1.4.0-r1/work/qemu-1.4.0/block.c:1233: bdrv_drain_all: Assertion `((&bs->tracked_requests)->lh_first == ((void *)0))' failed.
Created attachment 349514 [details] strace -f log the last 1000 lines for 140Mb file
(In reply to Anton Bolshakov from comment #5) > (In reply to Anthony Basile from comment #4) > > The question is what cause the crash. Can you post an strace -f. > > > Pardon me for asking, but why you are willing to waste time on that? Are you > going to backport a patch from 1.4.1? No, to confirm it is not a hardened issue, eg an rwx mmap killed by pax. Now I can more confidently say to the qemu team, consider stabilizing 1.4.1.
(In reply to Anthony Basile from comment #8) > (In reply to Anton Bolshakov from comment #5) > > (In reply to Anthony Basile from comment #4) > > > The question is what cause the crash. Can you post an strace -f. > > > > > > Pardon me for asking, but why you are willing to waste time on that? Are you > > going to backport a patch from 1.4.1? > > No, to confirm it is not a hardened issue, eg an rwx mmap killed by pax. > Now I can more confidently say to the qemu team, consider stabilizing 1.4.1. That's already part of bug #466092. So not sure if you want to close this as fixed in tree.
sure, closing as dup! *** This bug has been marked as a duplicate of bug 466092 ***
