dmesg -T
[Fri Jun 3 01:07:11 2016] divide error: 0000 [#1] SMP
[Fri Jun 3 01:07:11 2016] Modules linked in: iptable_nat nf_conntrack_ipv4
nf_defrag_ipv4 nf_nat_ipv4 nf_nat 8021q garp mrp binfmt_misc veth vhost_net
vhost macvtap macvlan ebtable_filter ebtables ip6table_filter ip6_tables
openvswitch nf_defrag_ipv6 nf_conntrack xt_CHECKSUM iptable_mangle xt_tcpudp
bridge stp llc iptable_filter ip_tables x_tables bonding zfs(PO) zunicode(PO)
zcommon(PO) znvpair(PO) spl(O) zavl(PO) ipmi_ssif ipmi_devintf dcdbas
intel_rapl x86_pkg_temp_thermal coretemp sb_edac edac_core mei_me mei shpchp
ipmi_si ipmi_msghandler 8250_fintek lpc_ich mac_hid acpi_power_meter kvm_intel
kvm irqbypass ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr
iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10
raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor
[Fri Jun 3 01:07:11 2016] raid6_pq libcrc32c raid1 raid0 multipath linear
crct10dif_pclmul crc32_pclmul igb aesni_intel aes_x86_64 lrw dca gf128mul
glue_helper ptp ahci ablk_helper pps_core mxm_wmi cryptd libahci megaraid_sas
i2c_algo_bit fjes wmi
[Fri Jun 3 01:07:11 2016] CPU: 4 PID: 4915 Comm: vhost-4913 Tainted: P
O 4.4.0-22-generic #40-Ubuntu
[Fri Jun 3 01:07:11 2016] Hardware name: Dell Inc. PowerEdge R730xd/0H21J3,
BIOS 2.0.2 03/15/2016
[Fri Jun 3 01:07:11 2016] task: ffff8807e6a80000 ti: ffff880046a3c000 task.ti:
ffff880046a3c000
[Fri Jun 3 01:07:11 2016] RIP: 0010:[<ffffffff810b593d>] [<ffffffff810b593d>]
task_numa_find_cpu+0x2cd/0x710
[Fri Jun 3 01:07:11 2016] RSP: 0018:ffff880046a3f7d8 EFLAGS: 00010257
[Fri Jun 3 01:07:11 2016] RAX: 0000000000000000 RBX: ffff880046a3f878 RCX:
0000000000000001
[Fri Jun 3 01:07:11 2016] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
ffff880dc42efa00
[Fri Jun 3 01:07:12 2016] RBP: ffff880046a3f840 R08: 0000000000000001 R09:
0000000000aaaaaa
[Fri Jun 3 01:07:12 2016] R10: 0000000000000335 R11: 0000000000000000 R12:
ffff880e2fbeee00
[Fri Jun 3 01:07:12 2016] R13: 0000000000000001 R14: ffff880dc42efa00 R15:
0000000000000335
[Fri Jun 3 01:07:12 2016] FS: 0000000000000000(0000)
GS:ffff88085e680000(0000) knlGS:0000000000000000
[Fri Jun 3 01:07:12 2016] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[Fri Jun 3 01:07:12 2016] CR2: 00007f442814d400 CR3: 0000000e6d094000 CR4:
00000000001426e0
[Fri Jun 3 01:07:12 2016] Stack:
[Fri Jun 3 01:07:12 2016] 00000000d08a1709 ffff8807e6a806ac ffff8807e6a80000
0000000000000001
[Fri Jun 3 01:07:12 2016] 0000000000000335 000000000000030d 0000000000016d00
0000000000000001
[Fri Jun 3 01:07:12 2016] ffff8807e6a80000 ffff880046a3f878 000000000000006d
0000000000000059
[Fri Jun 3 01:07:12 2016] Call Trace:
[Fri Jun 3 01:07:12 2016] [<ffffffff810b61be>] task_numa_migrate+0x43e/0x9b0
[Fri Jun 3 01:07:12 2016] [<ffffffff810b67a9>]
numa_migrate_preferred+0x79/0x80
[Fri Jun 3 01:07:12 2016] [<ffffffff810badc4>] task_numa_fault+0x7f4/0xd40
[Fri Jun 3 01:07:12 2016] [<ffffffff810ba435>] ?
should_numa_migrate_memory+0x55/0x130
[Fri Jun 3 01:07:13 2016] [<ffffffff811bf860>] handle_mm_fault+0xbc0/0x1820
[Fri Jun 3 01:07:13 2016] [<ffffffff8105a50e>] ?
physflat_send_IPI_mask+0xe/0x10
[Fri Jun 3 01:07:13 2016] [<ffffffff8106b537>] __do_page_fault+0x197/0x400
[Fri Jun 3 01:07:13 2016] [<ffffffff8106b7c2>] do_page_fault+0x22/0x30
[Fri Jun 3 01:07:13 2016] [<ffffffff81827478>] page_fault+0x28/0x30
[Fri Jun 3 01:07:13 2016] [<ffffffff813f69b5>] ?
copy_user_enhanced_fast_string+0x5/0x10
[Fri Jun 3 01:07:13 2016] [<ffffffff813fc789>] ? copy_to_iter+0x79/0x260
[Fri Jun 3 01:07:13 2016] [<ffffffff815eee49>] tun_do_read+0x1c9/0x3f0
[Fri Jun 3 01:07:13 2016] [<ffffffff815ef103>] tun_recvmsg+0x93/0xb0
[Fri Jun 3 01:07:13 2016] [<ffffffffc08c865d>] handle_rx+0x43d/0x7e0
[vhost_net]
[Fri Jun 3 01:07:13 2016] [<ffffffffc08c8a15>] handle_rx_net+0x15/0x20
[vhost_net]
[Fri Jun 3 01:07:13 2016] [<ffffffffc08ba723>] vhost_worker+0xf3/0x190 [vhost]
[Fri Jun 3 01:07:13 2016] [<ffffffffc08ba630>] ? vhost_poll_wakeup+0x30/0x30
[vhost]
[Fri Jun 3 01:07:14 2016] [<ffffffff810a0588>] kthread+0xd8/0xf0
[Fri Jun 3 01:07:14 2016] [<ffffffff810a04b0>] ?
kthread_create_on_node+0x1e0/0x1e0
[Fri Jun 3 01:07:14 2016] [<ffffffff8182568f>] ret_from_fork+0x3f/0x70
[Fri Jun 3 01:07:14 2016] [<ffffffff810a04b0>] ?
kthread_create_on_node+0x1e0/0x1e0
[Fri Jun 3 01:07:14 2016] Code: d0 4c 89 f7 e8 95 c7 ff ff 49 8b 84 24 d8 01
00 00 49 8b 76 78 31 d2 49 0f af 86 b0 00 00 00 4c 8b 45 d0 48 8b 4d b0 48 83
c6 01 <48> f7 f6 4c 89 c6 48 89 da 48 8d 3c 01 48 29 c6 e8 de c5 ff ff
[Fri Jun 3 01:07:14 2016] RIP [<ffffffff810b593d>]
task_numa_find_cpu+0x2cd/0x710
[Fri Jun 3 01:07:14 2016] RSP <ffff880046a3f7d8>
[Fri Jun 3 01:07:14 2016] ---[ end trace c2e57ae327861148 ]---
After that, the KVM instances have been hanging and I cannot get the
result of some commands such 'w' and 'ps -ef' hanging as well.
More information for you.
cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04 LTS"
uname -a
Linux infra02 4.4.0-22-generic #40-Ubuntu SMP Thu May 12 22:03:46 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux
dpkg -l | grep qemu
ii ipxe-qemu 1.0.0+git-20150424.a25a16d-1ubuntu1 all
PXE boot firmware - ROM images for qemu
ii qemu-block-extra:amd64 1:2.5+dfsg-5ubuntu10.1
amd64 extra block backend modules for qemu-system and qemu-utils
ii qemu-kvm 1:2.5+dfsg-5ubuntu10.1
amd64 QEMU Full virtualization
ii qemu-system-common 1:2.5+dfsg-5ubuntu10.1
amd64 QEMU full system emulation binaries (common files)
ii qemu-system-x86 1:2.5+dfsg-5ubuntu10.1
amd64 QEMU full system emulation binaries (x86)
ii qemu-utils 1:2.5+dfsg-5ubuntu10.1
amd64 QEMU utilities
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https://bugs.launchpad.net/bugs/1568729
Title:
divide error: 0000 [#1] SMP in task_numa_migrate - handle_mm_fault
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