Backtrace

NMI watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [iptables-restor:101787]
Modules linked in: nls_utf8 isofs tcp_diag udp_diag inet_diag ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6_tables veth fuse xt_physdev sunrpc nf_tables vxlan ip6_udp_tunnel udp_tunnel xt_statistic xt_nat ipt_REJECT nf_reject_ipv4 xt_comment xt_mark ipt_MASQUERADE nf_nat_masquerade_ipv4 nf_conntrack_netlink nfnetlink iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter xt_conntrack nf_nat nf_conntrack br_netfilter bridge stp llc overlay(T) ext4 mbcache jbd2 ppdev joydev virtio_balloon sg i2c_piix4 parport_pc parport pcspkr ip_tables xfs libcrc32c sr_mod cdrom ata_generic pata_acpi virtio_net virtio_console net_failover virtio_scsi virtio_blk failover cirrus drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm ata_piix libata
serio_raw virtio_pci virtio_ring virtio drm_panel_orientation_quirks floppy dm_mirror dm_region_hash dm_log dm_mod
CPU: 3 PID: 101787 Comm: iptables-restor Kdump: loaded Tainted: G             L ------------ T 3.10.0-1160.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: ffff8d4d04ae8000 ti: ffff8d4ef0684000 task.ti: ffff8d4ef0684000
RIP: 0010:[<ffffffff92916c0a>]  [<ffffffff92916c0a>] smp_call_function_many+0x20a/0x270
RSP: 0018:ffff8d4ef0687bc0  EFLAGS: 00000202
RAX: 0000000000000002 RBX: 000c00009287e750 RCX: ffff8d512cea0450
RDX: 0000000000000002 RSI: 00000000000000a0 RDI: 0000000000000000
RBP: ffff8d4ef0687bf8 R08: ffff8d4e79b43000 R09: ffffffff92b85f99
R10: ffff8d512cedf160 R11: ffffdb48ce491400 R12: 0000000000000286
R13: 0000000000000286 R14: ffff8d4ef0687b70 R15: ffff8d512ce5acc0
FS:  00007f1e5e903280(0000) GS:ffff8d512cec0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1e5e826140 CR3: 000000010317a000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
[<ffffffff9287e750>] ? flush_tlb_func+0xb0/0xb0
[<ffffffff92916ccd>] on_each_cpu+0x2d/0x60
[<ffffffff9287eac9>] flush_tlb_kernel_range+0x59/0xa0
[<ffffffff92a04180>] __purge_vmap_area_lazy+0x1a0/0x210
[<ffffffff92a0441c>] free_vmap_area_noflush+0x7c/0x90
[<ffffffff92a05ef0>] remove_vm_area+0x60/0x80
[<ffffffff92a05f3a>] __vunmap+0x2a/0x100
[<ffffffff92a06086>] vfree+0x36/0x70
[<ffffffff929dde8c>] kvfree+0x2c/0x40
[<ffffffff92e9779b>] xt_free_table_info+0x7b/0x90
[<ffffffffc04e9440>] __do_replace+0x230/0x2c0 [ip_tables]
[<ffffffffc04eb32d>] do_ipt_set_ctl+0x18d/0x1f0 [ip_tables]
[<ffffffff92e9646c>] nf_setsockopt+0x4c/0x70
[<ffffffff92ea89a5>] ip_setsockopt+0x75/0x90
[<ffffffff92ecd0ed>] raw_setsockopt+0x1d/0x30
[<ffffffff92e375da>] sock_common_setsockopt+0x1a/0x20
[<ffffffff92e366c6>] SyS_setsockopt+0x86/0x100
[<ffffffff92f93f92>] system_call_fastpath+0x25/0x2a
[<ffffffff92f93ed5>] ? system_call_after_swapgs+0xa2/0x13a
Code: 48 63 35 1e 89 c4 00 89 c2 39 f0 0f 8d 7d fe ff ff 48 98 49 8b 0f 48 03 0c c5 e0 13 55 93 f6 41 20 01 74 cd 0f 1f 44 00 00 f3 90 <f6> 41 20 01 75 f8 48 63 35 ed 88 c4 00 eb b7 0f b6 4d cc 4c 89