Public bug reported:
dmesg output:
[ 2.391851] NFSD: starting 90-second grace period (net ffffffff81ef7c00)
[ 2.456094] clocksource: Switched to clocksource tsc
[ 2.465456] Ebtables v2.0 registered
[ 2.471228] init: plymouth-upstart-bridge main process ended, respawning
[ 2.477313] init: plymouth-upstart-bridge main process (1480) terminated
with status 1
[ 2.477322] init: plymouth-upstart-bridge main process ended, respawning
[ 2.482371] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 2.497700] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 2.505129] cgroup: systemd-logind (709) created nested cgroup for
controller "memory" which has incomplete hierarchy support. Nested cgroups may
change behavior in the future.
[ 2.505132] cgroup: "memory" requires setting use_hierarchy to 1 on the root
[ 2.509517] init: plymouth-stop pre-start process (1497) terminated with
status 1
[ 2.792296] [drm] RC6 on
[ 3.016029] ahci 0000:00:17.0: port does not support device sleep
[ 3.016056] ahci 0000:00:17.0: port does not support device sleep
[ 3.048472] bridge: automatic filtering via arp/ip/ip6tables has been
deprecated. Update your scripts to load br_netfilter if you need this.
[ 3.152303] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[ 3.693219] r8169 0000:01:00.0 eth2: link up
[ 3.693225] IPv6: ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready
[ 4381.835515] EXT4-fs (loop0): mounting ext3 file system using the ext4
subsystem
[ 4381.841571] EXT4-fs (loop0): mounted filesystem with ordered data mode.
Opts: (null)
[ 4384.389984] kvm [4128]: vcpu0 unhandled rdmsr: 0x1c9
[ 4384.389990] kvm [4128]: vcpu0 unhandled rdmsr: 0x1a6
[ 4384.389992] kvm [4128]: vcpu0 unhandled rdmsr: 0x1a7
[ 4384.389993] kvm [4128]: vcpu0 unhandled rdmsr: 0x3f6
[ 4384.389995] kvm [4128]: vcpu0 unhandled rdmsr: 0x3f7
[ 4384.428877] kvm: zapping shadow pages for mmio generation wraparound
[ 4384.430468] kvm: zapping shadow pages for mmio generation wraparound
[ 4384.468599] kvm [4128]: vcpu0 unhandled rdmsr: 0x64e
[ 4384.468606] kvm [4128]: vcpu0 unhandled rdmsr: 0x34
[ 4384.468610] kvm [4128]: vcpu0 unhandled rdmsr: 0x606
[14701.237687] Corrupted low memory at ffff88000000a000 (a000 phys) = 00001660
[14701.237699] ------------[ cut here ]------------
[14701.237713] WARNING: CPU: 1 PID: 3598 at
/build/linux-lts-xenial-UweaL0/linux-lts-xenial-4.4.0/arch/x86/kernel/check.c:141
check_for_bios_corruption+0x103/0x110()
[14701.237715] Memory corruption detected in low memory
[14701.237718] Modules linked in: ipt_MASQUERADE nf_nat_masquerade_ipv4
iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack
nf_conntrack ipt_REJECT nf_reject_ipv4 xt_CHECKSUM iptable_mangle xt_tcpudp
bridge stp llc ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat
ebtables x_tables snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic bnep rfcomm input_leds intel_rapl x86_pkg_temp_thermal
intel_powerclamp coretemp snd_hda_intel kvm_intel nfsd auth_rpcgss nfs_acl nfs
kvm lockd grace binfmt_misc sunrpc fscache irqbypass crct10dif_pclmul
snd_hda_codec crc32_pclmul i915_bpo snd_hda_core snd_hwdep ghash_clmulni_intel
snd_pcm intel_ips dm_multipath drm_kms_helper drm mei_me snd_seq_midi
snd_seq_midi_event aesni_intel mei aes_x86_64 snd_rawmidi lrw gf128mul
glue_helper ablk_helper cryptd snd_seq snd_seq_device serio_raw snd_timer snd
i2c_algo_bit fb_sys_fops syscopyarea shpchp soundcore sysfillrect sysimgblt wmi
hci_uart btbcm btqca btintel bl
uetooth 8250_fintek intel_lpss_acpi intel_lpss video parport_pc i2c_hid
pinctrl_sunrisepoint ppdev pinctrl_intel tpm_crb mac_hid acpi_pad acpi_als
kfifo_buf lp parport industrialio hid_generic usbhid hid psmouse r8169 mii ahci
libahci fjes
[14701.237847] CPU: 1 PID: 3598 Comm: kworker/1:0 Not tainted 4.4.0-62-generic
#83~14.04.1-Ubuntu
[14701.237851] Hardware name: LENOVO 90DSCTO1WW/30D9, BIOS M05KT65A 10/28/2016
[14701.237858] Workqueue: events check_corruption
[14701.237862] 0000000000000000 ffff88005004bd28 ffffffff813dc4ac
ffff88005004bd70
[14701.237868] ffffffff81cad2d8 ffff88005004bd60 ffffffff8107e9d6
0000000000000000
[14701.237873] ffff880000010000 ffffffff82108250 0000000000000001
ffff880000000000
[14701.237879] Call Trace:
[14701.237887] [<ffffffff813dc4ac>] dump_stack+0x63/0x87
[14701.237894] [<ffffffff8107e9d6>] warn_slowpath_common+0x86/0xc0
[14701.237900] [<ffffffff8107ea5c>] warn_slowpath_fmt+0x4c/0x50
[14701.237907] [<ffffffff81063133>] check_for_bios_corruption+0x103/0x110
[14701.237913] [<ffffffff8106314e>] check_corruption+0xe/0x40
[14701.237920] [<ffffffff81096ca0>] process_one_work+0x150/0x3f0
[14701.237926] [<ffffffff8109741a>] worker_thread+0x11a/0x470
[14701.237933] [<ffffffff817fee89>] ? __schedule+0x359/0x980
[14701.237938] [<ffffffff81097300>] ? rescuer_thread+0x310/0x310
[14701.237943] [<ffffffff8109ccc9>] kthread+0xc9/0xe0
[14701.237948] [<ffffffff8109cc00>] ? kthread_park+0x60/0x60
[14701.237955] [<ffffffff818030cf>] ret_from_fork+0x3f/0x70
[14701.237960] [<ffffffff8109cc00>] ? kthread_park+0x60/0x60
[14701.237963] ---[ end trace 1e9bd710e780d916 ]---
[34380.007589] audit_printk_skb: 57 callbacks suppressed
[34380.007592] audit: type=1400 audit(1487289587.563:30): apparmor="STATUS"
operation="profile_replace" profile="unconfined"
name="/usr/lib/cups/backend/cups-pdf" pid=5773 comm="apparmor_parser"
[34380.007595] audit: type=1400 audit(1487289587.563:31): apparmor="STATUS"
operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd"
pid=5773 comm="apparmor_parser"
[40921.264711] Corrupted low memory at ffff88000000a000 (a000 phys) = 000089f0
[41180.272078] systemd-hostnamed[8057]: Warning: nss-myhostname is not
installed. Changing the local hostname might make it unresolveable. Please
install nss-myhostname!
** Affects: kvm (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: ".tmp"
https://bugs.launchpad.net/bugs/1665526/+attachment/4820555/+files/.tmp
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https://bugs.launchpad.net/bugs/1665526
Title:
kvm [4128]: vcpu0 unhandled rdmsr, And Corrupted low memory.
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