Description of problem:
I have a kvm guest running on my host, after a while, system hang and
see kernel backtrace.

Version-Release number of selected component (if applicable):
kernel-4.14.13-300.fc27.x86_64

How reproducible:
not sure, randomly

Steps to Reproduce:
1. boot up system
2. start a kvm guest with libvirt (my guest is window xp)

Actual results:
host hang

Expected results:


Additional info:

Jan 25 10:52:34.056481 localhost kernel: page:ffffe46305af8000 count:513 mapcount:1 mapping:ffff967f3f282841 index:0x7ff7a6400 compound_mapcount: 0
Jan 25 10:52:34.068068 localhost kernel: flags: 0x17fffe00048268(uptodate|lru|active|owner_priv_1|head|swapbacked)
Jan 25 10:52:34.068201 localhost kernel: raw: 0017fffe00048268 ffff967f3f282841 00000007ff7a6400 0000020100000000
Jan 25 10:52:34.068319 localhost kernel: raw: ffffe46305bdcbe0 ffff967f49576810 0000000000044200 ffff967f57335000
Jan 25 10:52:34.068869 localhost kernel: page dumped because: VM_BUG_ON_PAGE(PageCompound(page))
Jan 25 10:52:34.079372 localhost kernel: page->mem_cgroup:ffff967f57335000
Jan 25 10:52:34.083791 localhost kernel: ------------[ cut here ]------------
Jan 25 10:52:34.084368 localhost kernel: kernel BUG at mm/khugepaged.c:533!
Jan 25 10:52:34.084683 localhost kernel: invalid opcode: 0000 [#1] SMP PTI
Jan 25 10:52:34.095928 localhost kernel: Modules linked in: acpi_call(OE) xt_addrtype br_netfilter rfcomm ccm fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_nat_ftp nf_conntrack_ftp nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw dm_thin_pool dm_persistent_data dm_bio_prison ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) cmac bnep sunrpc vfat fat btusb btrtl btbcm btintel bluetooth ecdh_generic rmi_smbus rmi_core intel_rapl
Jan 25 10:52:34.095989 localhost kernel:  x86_pkg_temp_thermal intel_powerclamp coretemp arc4 kvm_intel kvm irqbypass mei_wdt crct10dif_pclmul iTCO_wdt iTCO_vendor_support crc32_pclmul wmi_bmof iwlmvm ghash_clmulni_intel intel_cstate intel_uncore mac80211 intel_rapl_perf iwlwifi snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel cfg80211 snd_hda_codec snd_hda_core snd_hwdep joydev snd_seq snd_seq_device i2c_i801 snd_pcm intel_pch_thermal mei_me mei snd_timer thinkpad_acpi lpc_ich shpchp wmi tpm_tis snd rfkill tpm_tis_core soundcore tpm xfs libcrc32c i915 i2c_algo_bit drm_kms_helper crc32c_intel e1000e drm serio_raw ptp pps_core video
Jan 25 10:52:34.096421 localhost kernel: CPU: 0 PID: 39 Comm: khugepaged Tainted: G           OE   4.14.13-300.fc27.x86_64 #1
Jan 25 10:52:34.096788 localhost kernel: Hardware name: LENOVO 20BTS1N70F/20BTS1N70F, BIOS N14ET28W (1.06 ) 03/12/2015
Jan 25 10:52:34.096818 localhost kernel: task: ffff967f6386be80 task.stack: ffffba7080e20000
Jan 25 10:52:34.096843 localhost kernel: RIP: 0010:khugepaged+0x1b3c/0x2180
Jan 25 10:52:34.097372 localhost kernel: RSP: 0018:ffffba7080e23db0 EFLAGS: 00010286
Jan 25 10:52:34.097400 localhost kernel: RAX: 0000000000000021 RBX: ffffe46305af8000 RCX: 0000000000000006
Jan 25 10:52:34.097424 localhost kernel: RDX: 0000000000000000 RSI: 0000000000000082 RDI: ffff967f6dc16a30
Jan 25 10:52:34.097847 localhost kernel: RBP: ffffba7080e23f00 R08: 00000000000003c1 R09: 0000000000000007
Jan 25 10:52:34.097880 localhost kernel: R10: 0000000000000000 R11: ffffffffba5f71cd R12: ffffe4630608f400
Jan 25 10:52:34.097903 localhost kernel: R13: 800000016be00825 R14: ffff967f3be66a28 R15: ffff967f3d77af80
Jan 25 10:52:34.097938 localhost kernel: FS:  0000000000000000(0000) GS:ffff967f6dc00000(0000) knlGS:0000000000000000
Jan 25 10:52:34.097964 localhost kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 25 10:52:34.097987 localhost kernel: CR2: 00000000e3117000 CR3: 000000001320a003 CR4: 00000000003626f0
Jan 25 10:52:34.098013 localhost kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jan 25 10:52:34.098036 localhost kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Jan 25 10:52:34.098062 localhost kernel: Call Trace:
Jan 25 10:52:34.098086 localhost kernel:  ? finish_wait+0x80/0x80
Jan 25 10:52:34.098122 localhost kernel:  kthread+0x125/0x140
Jan 25 10:52:34.098146 localhost kernel:  ? collapse_shmem+0xe00/0xe00
Jan 25 10:52:34.098169 localhost kernel:  ? kthread_park+0x60/0x60
Jan 25 10:52:34.098191 localhost kernel:  ret_from_fork+0x32/0x40
Jan 25 10:52:34.098215 localhost kernel: Code: e9 eb fd ff ff 41 bd 07 00 00 00 48 89 c3 e9 21 fb ff ff 48 83 ea 01 e9 6a fc ff ff 48 c7 c6 00 aa 09 ba 48 89 df e8 d4 5d fa ff <0f> 0b 4c 89 ea 48 89 de 4c 89 ff e8 54 e0 fd ff e9 38 fa ff ff 
Jan 25 10:52:34.098238 localhost kernel: RIP: khugepaged+0x1b3c/0x2180 RSP: ffffba7080e23db0
Jan 25 10:52:34.098298 localhost kernel: ---[ end trace 2f46f9aa7cfda92b ]---