Hello Friends,

We have one of the SELS 12 SPE2 KVM VM running with saphana DB this vm rebooting unexpectedly since last 2 days. We have found below logs located at
/var/crash/2018-09-03-19:48

/var/crash/2018-09-03-19:48 # ls -la
total 540628
drwxr-xr-x 2 root root 4096 Sep 3 19:49 .
drwxr-xr-x 5 root root 4096 Sep 3 19:48 ..
-rw-r--r-- 1 root root 187 Sep 3 19:49 README.txt
-rw-r--r-- 1 root root 3156229 Sep 3 19:49 System.map-4.4.21-69-default
-rw------- 1 root root 44280 Sep 3 19:48 dmesg.txt
-rw------- 1 root root 1378680832 Sep 3 19:49 vmcore
-rw-r--r-- 1 root root 6723861 Sep 3 19:49 vmlinux-4.4.21-69-default.gz

Below is output of dmesg.txt file. Please advice, reason for vm reboot

[ 26.695158] microcode: CPU0 sig=0x663, pf=0x1, revision=0x1
[ 26.695203] microcode: CPU1 sig=0x663, pf=0x1, revision=0x1
[ 26.695210] microcode: CPU2 sig=0x663, pf=0x1, revision=0x1
[ 26.695601] microcode: CPU3 sig=0x663, pf=0x1, revision=0x1
[ 26.695642] microcode: CPU4 sig=0x663, pf=0x1, revision=0x1
[ 26.695662] microcode: CPU5 sig=0x663, pf=0x1, revision=0x1
[ 26.695690] microcode: CPU6 sig=0x663, pf=0x1, revision=0x1
[ 26.695764] microcode: CPU7 sig=0x663, pf=0x1, revision=0x1
[ 26.695796] microcode: CPU8 sig=0x663, pf=0x1, revision=0x1
[ 26.695844] microcode: CPU9 sig=0x663, pf=0x1, revision=0x1
[ 26.695860] microcode: CPU10 sig=0x663, pf=0x1, revision=0x1
[ 26.695971] microcode: CPU11 sig=0x663, pf=0x1, revision=0x1
[ 26.695986] microcode: CPU12 sig=0x663, pf=0x1, revision=0x1
[ 26.696001] microcode: CPU13 sig=0x663, pf=0x1, revision=0x1
[ 26.696019] microcode: CPU14 sig=0x663, pf=0x1, revision=0x1
[ 26.696038] microcode: CPU15 sig=0x663, pf=0x1, revision=0x1
[ 26.696098] microcode: Microcode Update Driver: v2.01 <tigran@aivazian.fsnet.co.uk>, Peter Oruba
[ 26.696274] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
[ 26.696658] registered taskstats version 1
[ 26.696681] Loading compiled-in X.509 certificates
[ 26.696706] Loaded X.509 cert 'SUSE Linux Enterprise Secure Boot Signkey: 3fb077b6cebc6ff2522e1c148c57c777c788e3e7'
[ 26.696721] Loaded X.509 cert 'SUSE Linux Enterprise Secure Boot Signkey: 3fb077b6cebc6ff2522e1c148c57c777c788e3e7'
[ 26.696759] zswap: loaded using pool lzo/zbud
[ 26.696775] page_owner is disabled
[ 26.696871] input: VirtualPS/2 VMware VMMouse as /devices/platform/i8042/serio1/input/input3
[ 26.697117] input: VirtualPS/2 VMware VMMouse as /devices/platform/i8042/serio1/input/input2
[ 26.698550] Key type trusted registered
[ 26.701523] Key type encrypted registered
[ 26.701531] AppArmor: AppArmor sha1 policy hashing enabled
[ 26.701534] ima: No TPM chip found, activating TPM-bypass!
[ 26.701553] evm: HMAC attrs: 0x1
[ 26.701850] Magic number: 2:145:398
[ 26.701950] PM: Checking hibernation image partition /dev/sda2
[ 26.701957] PM: Hibernation image not present or could not be loaded.
[ 26.703339] Freeing unused kernel memory: 2028K (ffffffff81d56000 - ffffffff81f51000)
[ 26.703346] Write protecting the kernel read-only data: 12288k
[ 26.703900] Freeing unused kernel memory: 88K (ffff8800015ea000 - ffff880001600000)
[ 26.706718] Freeing unused kernel memory: 1240K (ffff880001aca000 - ffff880001c00000)
[ 26.712083] random: systemd: uninitialized urandom read (16 bytes read, 3 bits of entropy available)
[ 26.712305] random: systemd: uninitialized urandom read (16 bytes read, 3 bits of entropy available)
[ 26.712327] random: systemd: uninitialized urandom read (16 bytes read, 3 bits of entropy available)
[ 26.717035] systemd[1]: systemd 228 running in system mode. (+PAM -AUDIT +SELINUX -IMA +APPARMOR -SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT -GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID -ELFUTILS +KMOD -IDN)
[ 26.717045] systemd[1]: Detected virtualization kvm.
[ 26.717050] systemd[1]: Detected architecture x86-64.
[ 26.717052] systemd[1]: Running in initial RAM disk.
[ 26.717087] systemd[1]: Set hostname to <foodlnnshanadev>.
[ 26.757778] random: systemd: uninitialized urandom read (16 bytes read, 3 bits of entropy available)
[ 26.757816] random: systemd: uninitialized urandom read (16 bytes read, 3 bits of entropy available)
[ 26.757844] random: systemd: uninitialized urandom read (16 bytes read, 3 bits of entropy available)
[ 26.757897] random: systemd: uninitialized urandom read (16 bytes read, 3 bits of entropy available)
[ 26.758609] random: systemd: uninitialized urandom read (16 bytes read, 3 bits of entropy available)
[ 26.758853] random: systemd: uninitialized urandom read (16 bytes read, 3 bits of entropy available)
[ 26.759356] random: systemd: uninitialized urandom read (16 bytes read, 3 bits of entropy available)
[ 26.763647] systemd[1]: Listening on Journal Audit Socket.
[ 26.763709] systemd[1]: Reached target Timers.
[ 26.763756] systemd[1]: Listening on udev Control Socket.
[ 26.763795] systemd[1]: Listening on udev Kernel Socket.
[ 26.763803] systemd[1]: Reached target Swap.
[ 26.796929] SCSI subsystem initialized
[ 26.800192] alua: device handler registered
[ 26.802199] emc: device handler registered
[ 26.806295] rdac: device handler registered
[ 26.810094] device-mapper: uevent: version 1.0.3
[ 26.810192] device-mapper: ioctl: 4.34.0-ioctl (2015-10-28) initialised: dm-devel@redhat.com
[ 26.811584] device-mapper: multipath: version 1.11.0 loaded
[ 26.938412] libata version 3.00 loaded.
[ 26.940065] [drm] Initialized drm 1.1.0 20060810
[ 26.944854] FDC 0 is a S82078B
[ 26.987909] ACPI: bus type USB registered
[ 26.987968] usbcore: registered new interface driver usbfs
[ 26.987994] usbcore: registered new interface driver hub
[ 26.988108] usbcore: registered new device driver usb
[ 26.990845] ata_piix 0000:00:01.1: version 2.13
[ 26.992671] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 26.993020] scsi host0: ata_piix
[ 26.993163] scsi host1: ata_piix
[ 26.993239] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc240 irq 14
[ 26.993245] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc248 irq 15
[ 26.994704] uhci_hcd: USB Universal Host Controller Interface driver
[ 27.067228] uhci_hcd 0000:00:01.2: UHCI Host Controller
[ 27.067246] uhci_hcd 0000:00:01.2: new USB bus registered, assigned bus number 1
[ 27.067312] uhci_hcd 0000:00:01.2: detected 2 ports
[ 27.067408] uhci_hcd 0000:00:01.2: irq 11, io base 0x0000c200
[ 27.067502] usb usb1: New USB device found, idVendor=1d6b, idProduct=0001
[ 27.067509] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 27.067510] usb usb1: Product: UHCI Host Controller
[ 27.067510] usb usb1: Manufacturer: Linux 4.4.21-69-default uhci_hcd
[ 27.067511] usb usb1: SerialNumber: 0000:00:01.2
[ 27.067678] hub 1-0:1.0: USB hub found
[ 27.067688] hub 1-0:1.0: 2 ports detected
[ 27.067926] checking generic (fc000000 160000) vs hw (fc000000 2000000)
[ 27.067932] fb: switching to cirrusdrmfb from EFI VGA
[ 27.067962] Console: switching to colour dummy device 80x25
[ 27.071719] [TTM] Zone kernel: Available graphics memory: 131979400 kiB
[ 27.071724] [TTM] Zone dma32: Available graphics memory: 2097152 kiB
[ 27.071725] [TTM] Initializing pool allocator
[ 27.071730] [TTM] Initializing DMA pool allocator
[ 27.073112] [drm] fb mappable at 0xFC000000
[ 27.073117] [drm] vram aper at 0xFC000000
[ 27.073118] [drm] size 33554432
[ 27.073118] [drm] fb depth is 24
[ 27.073119] [drm] pitch is 3072
[ 27.073227] fbcon: cirrusdrmfb (fb0) is primary device
[ 27.074652] pmd_set_huge: Cannot satisfy [mem 0xfc000000-0xfc200000] with a huge-page mapping due to MTRR override.
[ 27.075321] Console: switching to colour frame buffer device 128x48
[ 27.085652] cirrus 0000:00:02.0: fb0: cirrusdrmfb frame buffer device
[ 27.108382] [drm] Initialized cirrus 1.0.0 20110418 for 0000:00:02.0 on minor 0
[ 27.148924] ata2.01: NODEV after polling detection
[ 27.149101] ata1.01: NODEV after polling detection
[ 27.149429] ata2.00: ATAPI: QEMU DVD-ROM, 2.5+, max UDMA/100
[ 27.149561] ata1.00: ATA-7: QEMU HARDDISK, 2.5+, max UDMA/100
[ 27.149566] ata1.00: 3103784960 sectors, multi 16: LBA48
[ 27.150164] ata2.00: configured for MWDMA2
[ 27.150245] ata1.00: configured for MWDMA2
[ 27.150807] scsi 0:0:0:0: Direct-Access ATA QEMU HARDDISK 2.5+ PQ: 0 ANSI: 5
[ 27.151015] scsi 0:0:0:0: Attached scsi generic sg0 type 0
[ 27.152738] scsi 1:0:0:0: CD-ROM QEMU QEMU DVD-ROM 2.5+ PQ: 0 ANSI: 5
[ 27.153426] scsi 1:0:0:0: Attached scsi generic sg1 type 5
[ 27.168543] sd 0:0:0:0: [sda] 3103784960 512-byte logical blocks: (1.59 TB/1.45 TiB)
[ 27.168562] sd 0:0:0:0: [sda] Write Protect is off
[ 27.168566] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 27.168581] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 27.170386] sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 >
[ 27.171036] sd 0:0:0:0: [sda] Attached SCSI disk
[ 27.185585] sr 1:0:0:0: [sr0] scsi3-mmc drive: 4x/4x cd/rw xa/form2 tray
[ 27.185595] cdrom: Uniform CD-ROM driver Revision: 3.20
[ 27.185857] sr 1:0:0:0: Attached scsi CD-ROM sr0
[ 27.513725] PM: Starting manual resume from disk
[ 27.513729] PM: Hibernation image partition 8:2 present
[ 27.513730] PM: Looking for hibernation image.
[ 27.634680] PM: Image not found (code -22)
[ 27.634682] PM: Hibernation image not present or could not be loaded.
[ 27.652428] tsc: Refined TSC clocksource calibration: 2194.753 MHz
[ 27.652435] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fa2d61a7b1, max_idle_ns: 440795235980 ns
[ 27.754798] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 28.022598] systemd-journald[191]: Received SIGTERM from PID 1 (systemd).
[ 28.277252] systemd: 22 output lines suppressed due to ratelimiting
[ 28.970116] random: nonblocking pool is initialized
[ 29.870538] systemd-sysv-generator[495]: Overwriting existing symlink /run/systemd/generator.late/sapinit.service with real service.
[ 29.870677] systemd-sysv-generator[495]: Overwriting existing symlink /run/systemd/generator.late/inputattach.service with real service.
[ 31.658813] EXT4-fs (sda1): re-mounted. Opts: acl,user_xattr
[ 32.369175] systemd-journald[527]: Received request to flush runtime journal from PID 1
[ 32.838513] audit: type=1400 audit(1535836906.498:2): apparmor="STATUS" operation="profile_load" name="/{usr/,}bin/ping" pid=577 comm="apparmor_parser"
[ 33.066574] audit: type=1400 audit(1535836906.726:3): apparmor="STATUS" operation="profile_load" name="/sbin/klogd" pid=585 comm="apparmor_parser"
[ 33.180770] audit: type=1400 audit(1535836906.842:4): apparmor="STATUS" operation="profile_load" name="/sbin/syslog-ng" pid=595 comm="apparmor_parser"
[ 34.340488] input: PC Speaker as /devices/platform/pcspkr/input/input4
[ 34.401915] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input5
[ 34.402082] ACPI: Power Button [PWRF]
[ 34.493141] piix4_smbus 0000:00:01.3: SMBus Host Controller at 0x700, revision 0
[ 34.566762] 8139cp: 8139cp: 10/100 PCI Ethernet driver v1.3 (Mar 22, 2004)
[ 34.585744] audit: type=1400 audit(1535836908.246:5): apparmor="STATUS" operation="profile_load" name="/sbin/syslogd" pid=917 comm="apparmor_parser"
[ 34.593696] ppdev: user-space parallel port driver
[ 34.599157] ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 10
[ 34.601479] 8139cp 0000:00:03.0 eth0: RTL-8139C+ at 0xffffc9001922e000, 52:54:00:40:7f:27, IRQ 10
[ 34.666820] ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 10
[ 34.668803] 8139cp 0000:00:05.0 eth1: RTL-8139C+ at 0xffffc9001924c000, 52:54:00:51:d5:f2, IRQ 10
[ 34.699860] audit: type=1400 audit(1535836908.358:6): apparmor="STATUS" operation="profile_load" name="/usr/lib/apache2/mpm-prefork/apache2" pid=932 comm="apparmor_parser"
[ 34.699870] audit: type=1400 audit(1535836908.358:7): apparmor="STATUS" operation="profile_load" name="DEFAULT_URI" pid=932 comm="apparmor_parser"
[ 34.699884] audit: type=1400 audit(1535836908.358:8): apparmor="STATUS" operation="profile_load" name="HANDLING_UNTRUSTED_INPUT" pid=932 comm="apparmor_parser"
[ 34.699887] audit: type=1400 audit(1535836908.358:9): apparmor="STATUS" operation="profile_load" name="phpsysinfo" pid=932 comm="apparmor_parser"
[ 34.803016] 8139too: 8139too Fast Ethernet driver 0.9.28
[ 34.805121] audit: type=1400 audit(1535836908.466:10): apparmor="STATUS" operation="profile_load" name="/usr/lib/dovecot/anvil" pid=937 comm="apparmor_parser"
[ 35.032210] audit: type=1400 audit(1535836908.690:11): apparmor="STATUS" operation="profile_load" name="/usr/lib/dovecot/auth" pid=948 comm="apparmor_parser"
[ 35.542444] Adding 31455228k swap on /dev/sda2. Priority:-1 extents:1 across:31455228k FS
[ 35.707642] SGI XFS with ACLs, security attributes, realtime, no debug enabled
[ 35.727152] XFS (sda5): Mounting V5 Filesystem
[ 35.731090] XFS (sda6): Mounting V5 Filesystem
[ 35.732441] XFS (sda3): Mounting V5 Filesystem
[ 35.817086] XFS (sda7): Mounting V5 Filesystem
[ 36.314949] XFS (sda7): Starting recovery (logdev: internal)
[ 36.369658] XFS (sda3): Starting recovery (logdev: internal)
[ 36.406332] XFS (sda5): Starting recovery (logdev: internal)
[ 36.454757] XFS (sda6): Starting recovery (logdev: internal)
[ 36.483777] XFS (sda3): Ending recovery (logdev: internal)
[ 36.497090] XFS (sda5): Ending recovery (logdev: internal)
[ 36.591414] XFS (sda6): Ending recovery (logdev: internal)
[ 36.612272] XFS (sda7): Ending recovery (logdev: internal)
[ 40.987761] No iBFT detected.
[ 42.544978] 8139cp 0000:00:03.0 eth0: link up, 100Mbps, full-duplex, lpa 0x05E1
[ 42.550372] 8139cp 0000:00:05.0 eth1: link up, 100Mbps, full-duplex, lpa 0x05E1
[ 42.889210] NET: Registered protocol family 17
[128650.404905] hrtimer: interrupt took 555098 ns
[147452.292172] NMI watchdog: BUG: soft lockup - CPU#11 stuck for 45s! [PoolThread:21780]
[147452.292181] Modules linked in: binfmt_misc af_packet iscsi_ibft iscsi_boot_sysfs xfs libcrc32c 8139too joydev acpi_cpufreq ppdev 8139cp virtio_balloon mii i2c_piix4 processor button pcspkr parport_pc parport ext4 crc16 jbd2 mbcache sr_mod cdrom sd_mod ata_generic cirrus drm_kms_helper uhci_hcd ehci_hcd syscopyarea ata_piix sysfillrect sysimgblt fb_sys_fops ahci usbcore ttm libahci virtio_pci usb_common virtio_ring drm libata serio_raw virtio floppy sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc scsi_dh_alua scsi_mod autofs4
[147452.292270] Supported: Yes
[147452.292275] CPU: 11 PID: 21780 Comm: PoolThread Not tainted 4.4.21-69-default #1
[147452.292277] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014
[147452.292280] task: ffff8839aca8d300 ti: ffff881ea0bb8000 task.ti: ffff881ea0bb8000
[147452.292287] RIP: 0010:[<ffffffff810807c9>] [<ffffffff810807c9>] __do_softirq+0x89/0x2e0
[147452.292289] RSP: 0000:ffff884037ec3f48 EFLAGS: 00000206
[147452.292291] RAX: ffff881ea0bbc000 RBX: ffff8839aca8d300 RCX: 0000000000000004
[147452.292292] RDX: 0000000000000000 RSI: ffff884037ed1570 RDI: ffff8839aca8d300
[147452.292293] RBP: 00000000284f0000 R08: 0000000000000000 R09: 0000000000000000
[147452.292295] R10: 000000000001e150 R11: 0000000000000055 R12: ffff880000000000
[147452.292297] R13: 00000000284f8000 R14: ffff881b5cf1bdf8 R15: ffffea00284f0000
[147452.292298] FS: 00007efab5e81700(0000) GS:ffff884037ec0000(0000) knlGS:0000000000000000
[147452.292300] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[147452.292302] CR2: 00007efb77ff5028 CR3: 0000001e39fc6000 CR4: 00000000000006e0
[147452.292305] Stack:
[147452.292311] 000000108d7404a0 ffffffff81d46c80 0000000102314067 ffff881ea0bbc000
[147452.292312] 004000400000000a ffff8839aca8d300 00000000284f0000 ffff880000000000
[147452.292315] 00000000284f8000
[147452.292315] ffff881b5cf1bdf8
[147452.292317] ffffea00284f0000 ffffffff81080cb5
[147452.292318] Call Trace:
[147452.292327] [<ffffffff81080cb5>] irq_exit+0xe5/0xf0
[147452.292338] [<ffffffff815e293c>] call_function_single_interrupt+0x8c/0xa0
[147452.295783] DWARF2 unwinder stuck at call_function_single_interrupt+0x8c/0xa0
[147452.295783]
[147452.295784] Leftover inexact backtrace:

[147452.295786] <IRQ>
[147452.295791] <EOI>
[147452.295791] [<ffffffff813199bc>] ? clear_page+0xc/0x10
[147452.295796] [<ffffffff811d224f>] ? alloc_pages_current+0x7f/0x100
[147452.295799] [<ffffffff811b4d4c>] ? clear_huge_page+0x7c/0x160
[147452.295802] [<ffffffff811e615b>] ? do_huge_pmd_anonymous_page+0x1bb/0x510
[147452.295805] [<ffffffff811b3994>] ? handle_mm_fault+0x484/0x550
[147452.295808] [<ffffffff810645ba>] ? __do_page_fault+0x18a/0x410
[147452.295810] [<ffffffff810648ec>] ? trace_do_page_fault+0x3c/0x120
[147452.295812] [<ffffffff815e3818>] ? async_page_fault+0x28/0x30
[147452.295832] Code: 24 20 0a 00 00 00 48 89 44 24 08 65 48 8b 04 25 04 31 01 00 48 89 44 24 18 65 c7 05 7e 28 f9 7e 00 00 00 00 fb 66 0f 1f 44 00 00 <b8> ff ff ff ff 48 c7 c5 c0 90 c0 81 0f bc 44 24 04 83 c0 01 89
[147452.295833] Kernel panic - not syncing: softlockup: hung tasks
[147452.295848] CPU: 11 PID: 21780 Comm: PoolThread Tainted: G L 4.4.21-69-default #1
[147452.295850] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014
[147452.295851] 0000000000000000 ffffffff8130d890 ffffffff8185dfec ffff884037ec3da8
[147452.295855] ffffffff81181b51 0000000000000008 ffff884037ec3db8 ffff884037ec3d58
[147452.295858] ffffffff82007740 0000000000000000 0000000000000001 0000000000000000
[147452.295861] Call Trace:
[147452.295869] [<ffffffff81019a59>] dump_trace+0x59/0x310
[147452.295874] [<ffffffff81019dfa>] show_stack_log_lvl+0xea/0x170
[147452.295878] [<ffffffff8101ab81>] show_stack+0x21/0x40
[147452.295882] [<ffffffff8130d890>] dump_stack+0x5c/0x7c
[147452.295888] [<ffffffff81181b51>] panic+0xd2/0x219
[147452.295895] [<ffffffff81135939>] watchdog_timer_fn+0x1d9/0x1e0
[147452.295903] [<ffffffff810ea53a>] __hrtimer_run_queues+0xea/0x260
[147452.295908] [<ffffffff810ea979>] hrtimer_interrupt+0x99/0x190
[147452.295913] [<ffffffff815e40e9>] smp_apic_timer_interrupt+0x39/0x50
[147452.295917] [<ffffffff815e21bc>] apic_timer_interrupt+0x8c/0xa0
[147452.299022] DWARF2 unwinder stuck at apic_timer_interrupt+0x8c/0xa0
[147452.299024]
[147452.299025] Leftover inexact backtrace:

[147452.299027] <IRQ> [<ffffffff810807c9>] ? __do_softirq+0x89/0x2e0
[147452.299034] [<ffffffff810a4d79>] ? ttwu_do_wakeup+0x19/0xe0
[147452.299037] [<ffffffff81080cb5>] ? irq_exit+0xe5/0xf0
[147452.299039] [<ffffffff815e293c>] ? call_function_single_interrupt+0x8c/0xa0
[147452.299040] <EOI> [<ffffffff813199bc>] ? clear_page+0xc/0x10
[147452.299046] [<ffffffff811d224f>] ? alloc_pages_current+0x7f/0x100
[147452.299049] [<ffffffff811b4d4c>] ? clear_huge_page+0x7c/0x160
[147452.299051] [<ffffffff811e615b>] ? do_huge_pmd_anonymous_page+0x1bb/0x510
[147452.299054] [<ffffffff811b3994>] ? handle_mm_fault+0x484/0x550
[147452.299057] [<ffffffff810645ba>] ? __do_page_fault+0x18a/0x410
[147452.299059] [<ffffffff810648ec>] ? trace_do_page_fault+0x3c/0x120
[147452.299062] [<ffffffff815e3818>] ? async_page_fault+0x28/0x30