IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
8021q: adding VLAN 0 to HW filter on device batadv0
nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based  firewall rule not found. Use the iptables CT target to attach helpers instead.
WARNING: CPU: 0 PID: 2980 at net/ipv4/tcp_output.c:2535 tcp_send_loss_probe+0x771/0x8a0 net/ipv4/tcp_output.c:2535
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 2980 Comm: kworker/0:2 Not tainted 5.0.0-rc7+ #86
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events iterate_cleanup_work
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x45 kernel/panic.c:571
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:tcp_send_loss_probe+0x771/0x8a0 net/ipv4/tcp_output.c:2535
Code: 88 fc ff ff 4c 89 ef e8 1d 76 c9 fb e9 c8 fc ff ff e8 73 76 c9 fb e9 63 fd ff ff e8 09 76 c9 fb e9 94 f9 ff ff e8 af 73 92 fb <0f> 0b e9 7d fa ff ff e8 a3 73 92 fb 0f b6 1d 07 6e 7b 03 31 ff 89
RSP: 0018:ffff8880ae807c68 EFLAGS: 00010206
RAX: ffff88809e85e5c0 RBX: 0000000000000000 RCX: ffffffff85dd68fb
RDX: 0000000000000100 RSI: ffffffff85dd6dd1 RDI: 0000000000000005
RBP: ffff8880ae807c98 R08: ffff88809e85e5c0 R09: ffffed101419e181
R10: ffffed101419e180 R11: ffff8880a0cf0c03 R12: ffff88809f102bc0
R13: ffff8880a0cf0a40 R14: 0000000000008000 R15: ffff88809f1033d0
 tcp_write_timer_handler+0x4f8/0x8e0 net/ipv4/tcp_timer.c:596
 tcp_write_timer+0x10e/0x1d0 net/ipv4/tcp_timer.c:620
 call_timer_fn+0x190/0x720 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers kernel/time/timer.c:1681 [inline]
 __run_timers kernel/time/timer.c:1649 [inline]
 run_timer_softirq+0x652/0x1700 kernel/time/timer.c:1694
 __do_softirq+0x266/0x95a kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x14a/0x570 arch/x86/kernel/apic/apic.c:1062
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:102 [inline]
RIP: 0010:__local_bh_enable_ip+0x18e/0x270 kernel/softirq.c:196
Code: 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 df 00 00 00 48 83 3d bf c0 4d 07 00 0f 84 8f 00 00 00 fb 66 0f 1f 44 00 00 <65> 8b 05 7b 2b bd 7e 85 c0 74 7f 5b 41 5c 41 5d 5d c3 80 3d 4e 17
RSP: 0018:ffff88809efafbb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1125060 RBX: 0000000000000200 RCX: 1ffff11013d0bdd1
RDX: dffffc0000000000 RSI: ffff88809e85ee68 RDI: ffff88809e85ee3c
RBP: ffff88809efafbc8 R08: ffff88809e85e5c0 R09: ffff88809e85ee88
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85a27ae1
R13: ffff88809e85e5c0 R14: 0000000000000001 R15: dffffc0000000000
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 get_next_corpse net/netfilter/nf_conntrack_core.c:1908 [inline]
 nf_ct_iterate_cleanup+0x217/0x4e0 net/netfilter/nf_conntrack_core.c:1931
 nf_ct_iterate_cleanup_net net/netfilter/nf_conntrack_core.c:2016 [inline]
 nf_ct_iterate_cleanup_net+0x133/0x190 net/netfilter/nf_conntrack_core.c:2001
 iterate_cleanup_work+0x4a/0xe0 net/ipv6/netfilter/nf_nat_masquerade_ipv6.c:113
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173
 worker_thread+0x98/0xe40 kernel/workqueue.c:2319
 kthread+0x357/0x430 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..