invalid inflight: 1 state 4 cwnd 10 mss 1448
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5701 at net/ipv4/tcp_output.c:2507 tcp_send_loss_probe.cold+0x7e/0x94 net/ipv4/tcp_output.c:2507
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 5701 Comm: syz-executor.1 Not tainted 4.14.144+ #0
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xca/0x134 lib/dump_stack.c:53
 panic+0x1ea/0x3d3 kernel/panic.c:182
 __warn.cold+0x2f/0x3a kernel/panic.c:546
 report_bug+0x20a/0x248 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x1bf/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x18/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:tcp_send_loss_probe.cold+0x7e/0x94 net/ipv4/tcp_output.c:2507
RSP: 0018:ffff8881d7407ca8 EFLAGS: 00010286
RAX: 000000000000002c RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffffa8e69f80 RDI: ffffed103ae80f87
RBP: ffff8881cf63b480 R08: 000000000000002c R09: ffffed103ae84ce9
R10: ffffed103ae84ce8 R11: ffff8881d7426747 R12: 00000000000005a8
R13: 0000000000000001 R14: 000000000000000a R15: ffff8881cf63b480
 tcp_write_timer_handler+0x46b/0x780 net/ipv4/tcp_timer.c:575
 tcp_write_timer+0xc9/0x170 net/ipv4/tcp_timer.c:597
 call_timer_fn+0x15b/0x6a0 kernel/time/timer.c:1279
 expire_timers+0x227/0x4c0 kernel/time/timer.c:1318
 __run_timers kernel/time/timer.c:1634 [inline]
 run_timer_softirq+0x1eb/0x5d0 kernel/time/timer.c:1647
 __do_softirq+0x234/0x9ec kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x114/0x150 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x1a7/0x650 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x2b/0x50 kernel/locking/spinlock.c:200
RSP: 0018:ffff8881c0307b20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8881c101882c
RBP: ffff8881d742a240 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d742a240
R13: ffff8881a0c70000 R14: 0000000000000000 R15: ffff8881c1018000
 finish_lock_switch kernel/sched/sched.h:1491 [inline]
 finish_task_switch+0x204/0x660 kernel/sched/core.c:2733
 context_switch kernel/sched/core.c:2869 [inline]
 __schedule+0x894/0x1f80 kernel/sched/core.c:3454
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 freezable_schedule include/linux/freezer.h:172 [inline]
 do_nanosleep+0x201/0x640 kernel/time/hrtimer.c:1519
 hrtimer_nanosleep+0x1f9/0x480 kernel/time/hrtimer.c:1573
 SYSC_nanosleep kernel/time/hrtimer.c:1605 [inline]
 SyS_nanosleep+0x126/0x190 kernel/time/hrtimer.c:1592
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x457db1
RSP: 002b:00007ffe64c91480 EFLAGS: 00000293 ORIG_RAX: 0000000000000023
RAX: ffffffffffffffda RBX: 000000000002c210 RCX: 0000000000457db1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffe64c91490
RBP: 0000000000000001 R08: ffffffffffffffff R09: ffffffffffffffff
R10: 00007ffe64c91580 R11: 0000000000000293 R12: 000000000075bf20
R13: 000000000075c9a0 R14: 0000000000761568 R15: 000000000075bfd4
Kernel Offset: 0x26000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..