------------[ cut here ]------------
kernel BUG at net/ipv4/tcp_output.c:2840!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.15.0-rc8+ #182
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__tcp_retransmit_skb+0x258f/0x2700 net/ipv4/tcp_output.c:2840
RSP: 0018:ffff8801db207148 EFLAGS: 00010206
RAX: ffffffff8682c340 RBX: 0000000000000001 RCX: ffffffff849034ef
RDX: 0000000000000100 RSI: ffff8801be95f738 RDI: ffff8801d6f5e82c
RBP: ffff8801db207450 R08: ffff88021fff801c R09: 0000000000000000
R10: ffff88021fff8010 R11: ffff88021fff801d R12: ffff8801d6f5e88e
R13: 0000000039753bb8 R14: ffff8801d6f5e800 R15: ffff8801be95f500
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffefa23dfe0 CR3: 0000000006822003 CR4: 00000000001606f0
Call Trace:
 <IRQ>
 tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2922
 tcp_retransmit_timer+0xd0e/0x2a00 net/ipv4/tcp_timer.c:480
 tcp_write_timer_handler+0x335/0x820 net/ipv4/tcp_timer.c:565
 tcp_write_timer+0x152/0x170 net/ipv4/tcp_timer.c:585
 call_timer_fn+0x228/0x820 kernel/time/timer.c:1318
 expire_timers kernel/time/timer.c:1355 [inline]
 __run_timers+0x7ee/0xb70 kernel/time/timer.c:1658
 run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1684
 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285
 invoke_softirq kernel/softirq.c:365 [inline]
 irq_exit+0x1cc/0x200 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:541 [inline]
 smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1052
 apic_timer_interrupt+0xa9/0xb0 arch/x86/entry/entry_64.S:937
 </IRQ>
RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54
RSP: 0018:ffffffff86807c38 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff11
RAX: dffffc0000000000 RBX: 1ffffffff0d00f8a RCX: 0000000000000000
RDX: 1ffffffff0d19190 RSI: 0000000000000001 RDI: ffffffff868c8c80
RBP: ffffffff86807c38 R08: ffff8801db225d58 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff86807cf0 R14: ffffffff870386e0 R15: 0000000000000000
 arch_safe_halt arch/x86/include/asm/paravirt.h:93 [inline]
 default_idle+0xbf/0x460 arch/x86/kernel/process.c:355
 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:346
 default_idle_call+0x36/0x90 kernel/sched/idle.c:98
 cpuidle_idle_call kernel/sched/idle.c:156 [inline]
 do_idle+0x24a/0x3b0 kernel/sched/idle.c:246
 cpu_startup_entry+0x104/0x120 kernel/sched/idle.c:351
 rest_init+0xed/0xf0 init/main.c:436
 start_kernel+0x7f1/0x819 init/main.c:716
 x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:378
 x86_64_start_kernel+0x77/0x7a arch/x86/kernel/head64.c:359
 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:237
Code: f7 ff ff 89 85 20 fd ff ff e8 4e fd 16 fd 8b 85 20 fd ff ff e9 95 f7 ff ff 4c 89 e7 e8 5b fd 16 fd e9 da e6 ff ff e8 b1 f5 df fc <0f> 0b 89 85 70 fd ff ff e8 44 fd 16 fd 8b 85 70 fd ff ff e9 31 
RIP: __tcp_retransmit_skb+0x258f/0x2700 net/ipv4/tcp_output.c:2840 RSP: ffff8801db207148
---[ end trace f43c7089a44d90a3 ]---