... [ 176.025679] random: crng init done [ 411.168635] netem: version 1.3 [ 456.059840] ------------[ cut here ]------------ [ 456.059849] WARNING: CPU: 4 PID: 1918 at net/ipv4/tcp_output.c:1048 tcp_set_skb_tso_segs+0xeb/0x100 [ 456.059851] Modules linked in: sch_netem cirrus ttm drm_kms_helper crc32_pclmul syscopyarea ghash_clmulni_intel sysfillrect sysimgblt fb_sys_fops aesni_intel lrw ppdev gf128mul drm glue_helper ablk_helper cryptd parport_pc parport i2c_piix4 virtio_balloon i2c_core joydev pcspkr ip_tables ext4 mbcache jbd2 ata_generic pata_acpi ata_piix virtio_console virtio_net virtio_blk floppy crct10dif_pclmul virtio_pci crct10dif_common libata serio_raw virtio_ring crc32c_intel virtio [ 456.059886] CPU: 4 PID: 1918 Comm: sshd Kdump: loaded Not tainted 3.10.0-862.14.4.el7.x86_64 #1 [ 456.059887] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007 [ 456.059890] Call Trace: [ 456.059896] [<ffffffffae913754>] dump_stack+0x19/0x1b [ 456.059901] [<ffffffffae2945d8>] __warn+0xd8/0x100 [ 456.059905] [<ffffffffae29471d>] warn_slowpath_null+0x1d/0x20 [ 456.059908] [<ffffffffae8535eb>] tcp_set_skb_tso_segs+0xeb/0x100 [ 456.059911] [<ffffffffae853637>] tcp_init_tso_segs+0x37/0x50 [ 456.059915] [<ffffffffae8552c1>] tcp_write_xmit+0x1f1/0xd00 [ 456.059918] [<ffffffffae85604e>] __tcp_push_pending_frames+0x2e/0xc0 [ 456.059922] [<ffffffffae8442fc>] tcp_push+0xec/0x120 [ 456.059925] [<ffffffffae847ce2>] tcp_sendmsg+0xd2/0xc80 [ 456.059930] [<ffffffffae8739b9>] inet_sendmsg+0x69/0xb0 [ 456.059935] [<ffffffffae7d084d>] sock_aio_write+0x15d/0x180 [ 456.059940] [<ffffffffae434c11>] ? set_fd_set+0x21/0x30 [ 456.059944] [<ffffffffae41e763>] do_sync_write+0x93/0xe0 [ 456.059948] [<ffffffffae41f345>] vfs_write+0x1c5/0x1f0 [ 456.059953] [<ffffffffae2fc0f0>] ? get_monotonic_boottime+0x50/0x100 [ 456.059956] [<ffffffffae42006f>] SyS_write+0x7f/0xf0 [ 456.059961] [<ffffffffae92579b>] system_call_fastpath+0x22/0x27 [ 456.059963] ---[ end trace 77e1915bd237f005 ]--- [ 728.963668] ------------[ cut here ]------------ [ 728.964320] kernel BUG at net/core/skbuff.c:3668! [ 728.964933] invalid opcode: 0000 [#1] SMP [ 728.965501] Modules linked in: sch_netem cirrus ttm drm_kms_helper crc32_pclmul syscopyarea ghash_clmulni_intel sysfillrect sysimgblt fb_sys_fops aesni_intel lrw ppdev gf128mul drm glue_helper ablk_helper cryptd parport_pc parport i2c_piix4 virtio_balloon i2c_core joydev pcspkr ip_tables ext4 mbcache jbd2 ata_generic pata_acpi ata_piix virtio_console virtio_net virtio_blk floppy crct10dif_pclmul virtio_pci crct10dif_common libata serio_raw virtio_ring crc32c_intel virtio [ 728.971540] CPU: 3 PID: 0 Comm: swapper/3 Kdump: loaded Tainted: G W ------------ 3.10.0-862.14.4.el7.x86_64 #1 [ 728.972981] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007 [ 728.973723] task: ffff94153bb1cf10 ti: ffff94153bb30000 task.ti: ffff94153bb30000 [ 728.974689] RIP: 0010:[<ffffffffae7df554>] [<ffffffffae7df554>] __skb_to_sgvec+0x1e4/0x280 [ 728.975792] RSP: 0018:ffff941655183cf8 EFLAGS: 00010202 [ 728.976494] RAX: ffff94163c68c700 RBX: 00000000000005a8 RCX: ffff941648bd4ac0 [ 728.977407] RDX: 0000000000000001 RSI: 00000000000005a8 RDI: 00000000000002c0 [ 728.978322] RBP: ffff941655183d38 R08: ffff941653416cf8 R09: fffffe544a34ae00 [ 728.979241] R10: ffff941648bd4800 R11: 000000000000000a R12: 00000000000005ea [ 728.980160] R13: 00000000000005ea R14: 0000000000000000 R15: 0000000000000002 [ 728.981076] FS: 0000000000000000(0000) GS:ffff941655180000(0000) knlGS:0000000000000000 [ 728.982109] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 728.982849] CR2: 00007f7ed4008000 CR3: 0000000289e1a000 CR4: 00000000001406e0 [ 728.983778] Call Trace: [ 728.984107] <IRQ> [ 728.984368] [<ffffffffae7df612>] skb_to_sgvec+0x12/0x30 [ 728.985098] [<ffffffffc00fa4bf>] start_xmit+0x19f/0x500 [virtio_net] [ 728.985925] [<ffffffffae7f02e6>] dev_hard_start_xmit+0x246/0x3b0 [ 728.986741] [<ffffffffae81bc0a>] sch_direct_xmit+0x11a/0x250 [ 728.987489] [<ffffffffae81bdce>] __qdisc_run+0x8e/0x360 [ 728.988182] [<ffffffffae7ef3e6>] net_tx_action+0x1d6/0x240 [ 728.988924] [<ffffffffae29dba5>] __do_softirq+0xf5/0x280 [ 728.989634] [<ffffffffae928cec>] call_softirq+0x1c/0x30 [ 728.990322] [<ffffffffae22e625>] do_softirq+0x65/0xa0 [ 728.990994] [<ffffffffae29df25>] irq_exit+0x105/0x110 [ 728.991680] [<ffffffffae92a088>] smp_apic_timer_interrupt+0x48/0x60 [ 728.992504] [<ffffffffae9267b2>] apic_timer_interrupt+0x162/0x170 [ 728.993298] <EOI> [ 728.993566] [<ffffffffae91ad90>] ? __cpuidle_text_start+0x8/0x8 [ 728.994377] [<ffffffffae91af96>] ? native_safe_halt+0x6/0x10 [ 728.995161] [<ffffffffae91adae>] default_idle+0x1e/0xc0 [ 728.995869] [<ffffffffae2366e3>] arch_cpu_idle+0x23/0xb0 [ 728.996568] [<ffffffffae2f5dea>] cpu_startup_entry+0x14a/0x1e0 [ 728.997330] [<ffffffffae2571b7>] start_secondary+0x1f7/0x270 [ 728.998077] [<ffffffffae2000d5>] start_cpu+0x5/0x14 [ 728.998721] Code: 89 45 c8 e8 3f fe ff ff 44 8b 4d d0 41 01 c7 44 29 cb 74 41 44 8b 55 c4 4c 8b 45 c8 45 01 cd 4d 8b 36 4d 85 f6 75 90 85 db 74 2a <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 48 c7 c7 00 00 00 80 48 2b [ 729.003191] RIP [<ffffffffae7df554>] __skb_to_sgvec+0x1e4/0x280 [ 729.005068] RSP <ffff941655183cf8>

Any advice?