serio: Serial port ptm0
invalid inflight: 1 state 4 cwnd 10 mss 1448
------------[ cut here ]------------
WARNING: CPU: 1 PID: 190 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: 1 PID: 190 Comm: udevd Not tainted 4.14.143+ #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:ffff8881db907ca8 EFLAGS: 00010286
RAX: 000000000000002c RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffffa1e69f80 RDI: ffffed103b720f87
RBP: ffff8881d3092a00 R08: 000000000000002c R09: ffffed103b724ce9
R10: ffffed103b724ce8 R11: ffff8881db926747 R12: 00000000000005a8
R13: 0000000000000001 R14: 000000000000000a R15: ffff8881d3092a00
 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:lock_release+0x3de/0x740 kernel/locking/lockdep.c:4013
RSP: 0018:ffff8881d389f848 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000007 RBX: 1ffff1103a713f0c RCX: 1ffff1103a8e1cc4
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000246
RBP: ffff8881d470de00 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff4505ba5 R11: ffffffffa282dd2b R12: e97a9584910b0cb6
R13: ffff8881d470de00 R14: 0000000000000002 R15: ffff8881d470e628
 __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline]
 _raw_spin_unlock+0x17/0x40 kernel/locking/spinlock.c:184
 spin_unlock include/linux/spinlock.h:357 [inline]
 fast_dput fs/dcache.c:714 [inline]
 dput.part.0+0x3f9/0x710 fs/dcache.c:818
 dput+0x1b/0x30 fs/dcache.c:811
 path_to_nameidata fs/namei.c:954 [inline]
 step_into fs/namei.c:1889 [inline]
 walk_component+0x481/0xbf0 fs/namei.c:1942
 link_path_walk+0x84a/0x1110 fs/namei.c:2252
 path_openat+0x178/0x2be0 fs/namei.c:3680
 do_filp_open+0x1a1/0x280 fs/namei.c:3715
 do_sys_open+0x2ca/0x590 fs/open.c:1096
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f3078fb0120
RSP: 002b:00007ffc3cba6ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000001e21fb0 RCX: 00007f3078fb0120
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007ffc3cba7b40
RBP: 0000000001e5d920 R08: 000000000041f4f1 R09: 00007f30790067d0
R10: 7269762f73656369 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 0000000001e21fb0 R15: 0000000001dfa030
Kernel Offset: 0x1f000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..