Backtrace

NMI watchdog: BUG: soft lockup - CPU#9 stuck for 22s! [etcd:17549]
Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache xt_multiport ip_set_hash_ip ip_set_hash_net ipip tunnel4 ip_tunnel veth xt_addrtype xt_set ip_set_hash_ipportnet ip_set_bitmap_port ip_set_hash_ipport ip_set_hash_ipportip ip_set dummy iptable_raw xt_CT ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 xt_comment xt_mark nf_conntrack_netlink nfnetlink overlay(T) xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat xt_conntrack ipt_REJECT nf_reject_ipv4 tun ebtable_filter ebtables ip6table_filter devlink ip6_tables iptable_filter sunrpc ppdev sg virtio_balloon parport_pc parport i2c_piix4 joydev pcspkr br_netfilter bridge stp llc nf_conntrack_ipv4 nf_defrag_ipv4 ip_vs_sh ip_vs_wrr ip_vs_rr ip_vs nf_conntrack
ip_tables xfs libcrc32c sr_mod cdrom ata_generic pata_acpi virtio_scsi virtio_net virtio_console virtio_blk cirrus drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm floppy drm ata_piix libata serio_raw drm_panel_orientation_quirks virtio_pci virtio_ring virtio dm_mirror dm_region_hash dm_log dm_mod
CPU: 9 PID: 17549 Comm: etcd Kdump: loaded Tainted: G               ------------ T 3.10.0-957.el7.x86_64 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.1-0-g0551a4be2c-prebuilt.qemu-project.org 04/01/2014
task: ffff9f688576b0c0 ti: ffff9f6840bf8000 task.ti: ffff9f6840bf8000
RIP: 0010:[<ffffffff8ed1173a>]  [<ffffffff8ed1173a>] smp_call_function_many+0x20a/0x270
RSP: 0018:ffff9f6840bfba58  EFLAGS: 00000202
RAX: 0000000000000000 RBX: 00000000000000fc RCX: ffff9f68bea20500
RDX: 0000000000000000 RSI: 0000000000000030 RDI: 0000000000000000
RBP: ffff9f6840bfba90 R08: ffff9f5a29525400 R09: ffffffff8ef755c9
R10: ffff9f68bec5f160 R11: ffffea4676d3a400 R12: 0000000000000292
R13: ffff9f6840bfba08 R14: ffff9f688576b0c0 R15: ffffffff8ee1d189
FS:  000000c420072090(0000) GS:ffff9f68bec40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe6092015e0 CR3: 0000000f71bac000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
[<ffffffff8ec7a598>] native_flush_tlb_others+0xb8/0xc0
[<ffffffff8ec7a608>] flush_tlb_mm_range+0x68/0x140
[<ffffffff8ec782c0>] pmdp_splitting_flush+0x30/0x40
[<ffffffff8ee2c1bb>] __split_huge_page+0xeb/0x880
[<ffffffff8ee2c9c6>] split_huge_page_to_list+0x76/0xf0
[<ffffffff8ec2a621>] ? __switch_to+0x151/0x580
[<ffffffff8ee2d820>] __split_huge_page_pmd+0x1d0/0x5c0
[<ffffffff8ede728d>] unmap_page_range+0xbdd/0xc30
[<ffffffff8ede7361>] unmap_single_vma+0x81/0xf0
[<ffffffff8eddf347>] ? anon_vma_interval_tree_insert+0x97/0xa0
[<ffffffff8ede879d>] zap_page_range+0x11d/0x190
[<ffffffff8ede368d>] SyS_madvise+0x49d/0xac0
[<ffffffff8ee57044>] ? poll_select_copy_remaining+0x144/0x180
[<ffffffff8f374d21>] ? system_call_after_swapgs+0xae/0x146
[<ffffffff8f37505b>] tracesys+0xa3/0xc9
Code: 48 63 35 4e 83 c4 00 89 c2 39 f0 0f 8d 7d fe ff ff 48 98 49 8b 0f 48 03 0c c5 60 b9 94 8f f6 41 20 01 74 cd 0f 1f 44 00 00 f3 90 <f6> 41 20 01 75 f8 48 63 35 1d 83 c4 00 eb b7 0f b6 4d cc 4c 89