protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
invalid inflight: 1 state 4 cwnd 10 mss 1428
------------[ cut here ]------------
WARNING: CPU: 0 PID: 11458 at net/ipv4/tcp_output.c:2507 tcp_send_loss_probe.cold+0x83/0xa2 net/ipv4/tcp_output.c:2507
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 11458 Comm: syz-executor.5 Not tainted 4.14.143 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x197 lib/dump_stack.c:53
kobject: 'loop0' (ffff8880a4968ee0): kobject_uevent_env
 panic+0x1f2/0x426 kernel/panic.c:182
kobject: 'loop0' (ffff8880a4968ee0): fill_kobj_path: path = '/devices/virtual/block/loop0'
 __warn.cold+0x2f/0x36 kernel/panic.c:546
 report_bug+0x216/0x254 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+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:tcp_send_loss_probe.cold+0x83/0xa2 net/ipv4/tcp_output.c:2507
RSP: 0000:ffff8880aee07cb8 EFLAGS: 00010282
RAX: 000000000000002c RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff866d10e0 RDI: ffffed1015dc0f8d
RBP: ffff8880aee07ce8 R08: 000000000000002c R09: ffff888056414c48
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888093ca5500
R13: 0000000000000001 R14: 0000000000000594 R15: 000000000000000a
 tcp_write_timer_handler+0x4a8/0x7e0 net/ipv4/tcp_timer.c:575
 tcp_write_timer+0xd8/0x180 net/ipv4/tcp_timer.c:597
 call_timer_fn+0x161/0x670 kernel/time/timer.c:1279
 expire_timers kernel/time/timer.c:1318 [inline]
 __run_timers kernel/time/timer.c:1634 [inline]
 __run_timers kernel/time/timer.c:1602 [inline]
 run_timer_softirq+0x5b4/0x1570 kernel/time/timer.c:1647
 __do_softirq+0x244/0x9a0 kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x160/0x1b0 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0033:0x40e8af
RSP: 002b:00007ffefc8f6a80 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff10
RAX: 00007f8c0b1f0010 RBX: 00007f8c0b1e82f0 RCX: ffffffff82d86c3c
RDX: ffffffff82d86c57 RSI: 00007f8c0b200058 RDI: 00007f8c0b1efbd0
RBP: 00007f8c0b1efbc0 R08: ffffffff82d86c3c R09: 00000000afc6f62d
R10: 00007ffefc8f6d10 R11: 0000000000000246 R12: 00007f8c0b1e82e0
R13: 000000000000001a R14: 00007f8c0b1efbc0 R15: 000000000003ffff
Kernel Offset: disabled
Rebooting in 86400 seconds..