[32137192.922979] ------------[ cut here ]------------ [32137192.922992] WARNING: CPU: 0 PID: 1 at arch/x86/xen/enlighten.c:967 xen_apic_write+0x15/0x20() [32137192.922999] Modules linked in: [32137192.923006] CPU: 0 PID: 1 Comm: swapper Not tainted 3.13.3-gentoo #1 [32137192.923013] 0000000000000009 ffff880006c45e68 ffffffff812a7e85 ffff880006c45ea8 [32137192.923022] ffffffff8103a4bb ffff880006c45ef8 0000000000000000 0000000000000000 [32137192.923032] 0000000000000000 0000000000000000 0000000000000000 ffff880006c45eb8 [32137192.923042] Call Trace: [32137192.923050] [<ffffffff812a7e85>] dump_stack+0x19/0x1b [32137192.923056] [<ffffffff8103a4bb>] warn_slowpath_common+0x7b/0xb0 [32137192.923062] [<ffffffff8103a505>] warn_slowpath_null+0x15/0x20 [32137192.923069] [<ffffffff81002ee5>] xen_apic_write+0x15/0x20 [32137192.923076] [<ffffffff813dfc12>] verify_local_APIC+0x4e/0x1bc [32137192.923082] [<ffffffff813e0050>] APIC_init_uniprocessor+0x59/0xfe [32137192.923089] [<ffffffff813d3e73>] kernel_init_freeable+0x66/0x185 [32137192.923095] [<ffffffff812a12d0>] ? rest_init+0x70/0x70 [32137192.923098] [<ffffffff812a12d9>] kernel_init+0x9/0x120 [32137192.923103] [<ffffffff812abd4a>] ret_from_fork+0x7a/0xb0 [32137192.923107] [<ffffffff812a12d0>] ? rest_init+0x70/0x70 [32137192.923113] ---[ end trace 66f092b65f624edf ]--- [10x the same trace] This is dmesg from DomU. This bug looks similar to bug #434976. I don't have problem with stability.
Created attachment 370648 [details] dmesg
Portage 2.2.7 (default/linux/amd64/13.0, gcc-4.7.3, glibc-2.17, 3.13.3-gentoo x86_64) ================================================================= System uname: Linux-3.13.3-gentoo-x86_64-Intel-R-_Core-TM-_i7_CPU_920_@_2.67GHz-with-gentoo-2.2 KiB Mem: 121156 total, 16644 free KiB Swap: 262140 total, 261964 free Timestamp of tree: Mon, 17 Feb 2014 10:00:01 +0000 ld GNU gold (GNU Binutils 2.23.2) 1.11 ccache version 3.1.9 [enabled] app-shells/bash: 4.2_p45 dev-lang/python: 2.7.5-r3, 3.3.3 dev-util/ccache: 3.1.9-r3 dev-util/pkgconfig: 0.28 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.12.4 sys-apps/sandbox: 2.6-r1 sys-devel/autoconf: 2.69 sys-devel/automake: 1.11.6, 1.12.6, 1.13.4 sys-devel/binutils: 2.23.2 sys-devel/gcc: 4.7.3-r1 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.9 (virtual/os-headers) sys-libs/glibc: 2.17 Repositories: gentoo ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-Os -march=core2 -mtune=corei7 -s -fno-unwind-tables -fno-asynchronous-unwind-tables --param ggc-min-expand=1 --param ggc-min-heapsize=4096 --param max-gcse-memory=2000000 -fconserve-stack -Wdisabled-optimization -pipe -flto" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-Os -march=core2 -mtune=corei7 -s -fno-unwind-tables -fno-asynchronous-unwind-tables --param ggc-min-expand=1 --param ggc-min-heapsize=4096 --param max-gcse-memory=2000000 -fconserve-stack -Wdisabled-optimization -pipe -flto" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="Xdistcc assume-digests binpkg-logs ccache cgroup collision-protect compressdebug config-protect-if-modified distlocks ebuild-locks fixlafiles news nodoc parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed -flto" MAKEOPTS="-j1" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_EXTRA_OPTS="-O --inplace" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-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="" USE="acl amd64 caps cli crypt cxx iconv memlimit mmx modules multilib ncurses nptl pam pgo profile readline session sse sse2 sse3 sse4_1 ssl ssse3 unicode" 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" 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 ublox ubx" 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" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python3_3" RUBY_TARGETS="ruby19 ruby18" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga nouveau nv r128 radeon savage sis tdfx trident vesa via vmware dummy v4l" 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, SYNC, USE_PYTHON
hi, could you paste your kernel config (both for dom0, domU)? and seems the demsg is from domU, so could also you tell us which xen versions you are using (app-emulation/xen, app-emulation/xen-tools), and the domU config file. and I have a quick test with 3.13.3 kernel, can't re-produce your problem.
Created attachment 370692 [details] .config from DomU
I don't have access to Dom0, I'm using commercial VPS.
Created attachment 371166 [details] kernel config 3.13.3 I can comfirm this err with the attached config file . but after enable Processor type and features ---> [*] Symmetric multi-processing support this error message gone, I think further investigation needed.
Created attachment 374654 [details] kernel log I got near the same issue but on hardened-sources-3.13.6-r3. hardened-sources-3.11.7-r1 works normal with same .config. CONFIG_SMP=y fixes the issue with 3.13.6. On 3.11.7 it isn't needed. I use xen domU with one CPU core allocated to me.
Is this still an issue with later kernels?
I don't use any xen VM now, I don't expect it will change in near future. I can't test it, maybe Cyberbat can do it?
Closing with request for test. If someone can do the test, feel free to comment and we will reopen this bug.
