IPVS: ftp: loaded support on port[0] = 21
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(class_idx > MAX_LOCKDEP_KEYS)
WARNING: CPU: 0 PID: 28405 at kernel/locking/lockdep.c:3765 __lock_acquire+0x17b5/0x5490 kernel/locking/lockdep.c:3765
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 28405 Comm: syz-executor.0 Not tainted 5.2.0-rc1+ #4
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/0x744 kernel/panic.c:219
 __warn.cold+0x20/0x4d kernel/panic.c:576
 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:986
RIP: 0010:__lock_acquire+0x17b5/0x5490 kernel/locking/lockdep.c:3765
Code: d2 0f 85 c7 2c 00 00 44 8b 3d e7 a1 29 08 45 85 ff 0f 85 57 f3 ff ff 48 c7 c6 20 c1 6b 87 48 c7 c7 00 98 6b 87 e8 09 d5 eb ff <0f> 0b e9 40 f3 ff ff 0f 0b e9 83 f1 ff ff 8b 0d 47 88 0e 09 85 c9
RSP: 0018:ffff88809666f270 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815ac7e6 RDI: ffffed1012ccde40
RBP: ffff88809666f420 R08: ffff8880699d6680 R09: fffffbfff11730e9
R10: fffffbfff11730e8 R11: ffffffff88b98743 R12: 0000000049941909
R13: 0000000000000000 R14: 00000000000c1909 R15: 0000000000000000
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4303
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151
 spin_lock include/linux/spinlock.h:338 [inline]
 __queue_work+0x285/0x1200 kernel/workqueue.c:1449
 __queue_delayed_work+0x1d6/0x270 kernel/workqueue.c:1638
 mod_delayed_work_on+0xd8/0x200 kernel/workqueue.c:1712
 mod_delayed_work include/linux/workqueue.h:524 [inline]
 addrconf_mod_dad_work+0x3f/0xa0 net/ipv6/addrconf.c:329
 addrconf_dad_start+0x76/0xb0 net/ipv6/addrconf.c:4016
 inet6_addr_add+0x4e4/0x970 net/ipv6/addrconf.c:2970
 inet6_rtm_newaddr+0xba2/0x14c0 net/ipv6/addrconf.c:4795
 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:5218
 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2486
 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5236
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1926
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:671
 __sys_sendto+0x262/0x380 net/socket.c:1964
 __do_sys_sendto net/socket.c:1976 [inline]
 __se_sys_sendto net/socket.c:1972 [inline]
 __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1972
 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4130c3
Code: ff 0f 83 b0 19 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d cd 31 66 00 00 75 17 49 89 ca b8 2c 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 81 19 00 00 c3 48 83 ec 08 e8 87 fa ff ff
RSP: 002b:00007ffc4aa96458 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004130c3
RDX: 0000000000000040 RSI: 0000000000a70070 RDI: 0000000000000003
RBP: 00007ffc4aa964c0 R08: 00007ffc4aa96460 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007ffc4aa96818 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..