------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(class_idx > MAX_LOCKDEP_KEYS)
WARNING: CPU: 0 PID: 9 at kernel/locking/lockdep.c:3673 __lock_acquire+0x1887/0x3fb0 kernel/locking/lockdep.c:3673
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.1.0-rc1-next-20190322 #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __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:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:__lock_acquire+0x1887/0x3fb0 kernel/locking/lockdep.c:3673
Code: d2 0f 85 7b 1f 00 00 44 8b 3d 79 5a 07 08 45 85 ff 0f 85 20 f3 ff ff 48 c7 c6 60 5d 6b 87 48 c7 c7 a0 33 6b 87 e8 77 c3 eb ff <0f> 0b e9 09 f3 ff ff 0f 0b e9 41 f1 ff ff 8b 1d f5 8c 05 09 85 db
RSP: 0018:ffff8880aa277398 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff815b0316 RDI: ffffed101544ee65
RBP: ffff8880aa2774d0 R08: ffff8880aa268240 R09: fffffbfff1133651
R10: fffffbfff1133650 R11: ffffffff8899b283 R12: 0000000033918fee
R13: 00000000000000af R14: 000000000004afee R15: 0000000000000000
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4211
 __raw_spin_trylock include/linux/spinlock_api_smp.h:90 [inline]
 _raw_spin_trylock+0x62/0x80 kernel/locking/spinlock.c:128
 spin_trylock include/linux/spinlock.h:339 [inline]
 icmp_xmit_lock net/ipv4/icmp.c:219 [inline]
 __icmp_send+0x553/0x1400 net/ipv4/icmp.c:666
 icmp_send include/net/icmp.h:47 [inline]
 __udp4_lib_rcv+0x1fb6/0x2c50 net/ipv4/udp.c:2323
 udp_rcv+0x22/0x30 net/ipv4/udp.c:2482
 ip_protocol_deliver_rcu+0x60/0x8f0 net/ipv4/ip_input.c:208
 ip_local_deliver_finish+0x23b/0x390 net/ipv4/ip_input.c:234
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ip_local_deliver+0x1e9/0x520 net/ipv4/ip_input.c:255
 dst_input include/net/dst.h:439 [inline]
 ip_rcv_finish+0x1e1/0x300 net/ipv4/ip_input.c:414
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ip_rcv+0xe8/0x3f0 net/ipv4/ip_input.c:524
 __netif_receive_skb_one_core+0x115/0x1a0 net/core/dev.c:4971
 __netif_receive_skb+0x2c/0x1c0 net/core/dev.c:5081
 process_backlog+0x206/0x750 net/core/dev.c:5921
 napi_poll net/core/dev.c:6344 [inline]
 net_rx_action+0x4fa/0x1070 net/core/dev.c:6410
 __do_softirq+0x266/0x95a kernel/softirq.c:293
 run_ksoftirqd kernel/softirq.c:655 [inline]
 run_ksoftirqd+0x8e/0x110 kernel/softirq.c:647
 smpboot_thread_fn+0x6ab/0xa10 kernel/smpboot.c:164
 kthread+0x357/0x430 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..