invalid inflight: 1 state 4 cwnd 10 mss 1448
------------[ cut here ]------------
WARNING: CPU: 1 PID: 22849 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: 22849 Comm: syz-executor.5 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:ffff8881dbb07ce8 EFLAGS: 00010282
RAX: 000000000000002c RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffffb5469f80 RDI: ffffed103b760f8f
RBP: ffff8881d45ade80 R08: 000000000000002c R09: ffffed103b764ce9
R10: ffffed103b764ce8 R11: ffff8881dbb26747 R12: 00000000000005a8
R13: 0000000000000001 R14: 000000000000000a R15: ffff8881d45ade80
 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
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1015
 </IRQ>
 do_softirq.part.0+0x5b/0x60 kernel/softirq.c:332
 do_softirq kernel/softirq.c:324 [inline]
 __local_bh_enable_ip+0xb0/0xc0 kernel/softirq.c:185
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:725 [inline]
 __dev_queue_xmit+0xc4a/0x1d00 net/core/dev.c:3552
 packet_snd.isra.0+0x1280/0x1f90 net/packet/af_packet.c:2993
 packet_sendmsg+0xf1b/0x2260 net/packet/af_packet.c:3018
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb7/0x100 net/socket.c:656
 ___sys_sendmsg+0x368/0x890 net/socket.c:2062
 __sys_sendmmsg+0x13c/0x360 net/socket.c:2152
 SYSC_sendmmsg net/socket.c:2183 [inline]
 SyS_sendmmsg+0x2f/0x50 net/socket.c:2178
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4598e9
RSP: 002b:00007fd6c0083c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000004598e9
RDX: 000000000400004e RSI: 0000000020000d00 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd6c00846d4
R13: 00000000004c70a7 R14: 00000000004dc768 R15: 00000000ffffffff
Kernel Offset: 0x32600000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 86400 seconds..