------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(class_idx > MAX_LOCKDEP_KEYS)
WARNING: CPU: 0 PID: 29275 at kernel/locking/lockdep.c:3315 __lock_acquire+0x14cd/0x4a30 kernel/locking/lockdep.c:3315
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 29275 Comm: syz-executor3 Not tainted 5.0.0-rc2+ #6
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+0x1db/0x2d0 lib/dump_stack.c:113
 panic+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x48 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:__lock_acquire+0x14cd/0x4a30 kernel/locking/lockdep.c:3315
Code: 8b 1d 0b ea f7 08 45 85 db 0f 85 f0 f3 ff ff 48 c7 c6 60 a2 4b 88 48 c7 c7 80 77 4b 88 44 89 9c 24 98 00 00 00 e8 63 58 e7 ff <0f> 0b 44 8b 9c 24 98 00 00 00 e9 c9 f3 ff ff 8b 0d be 94 f2 09 85
RSP: 0018:ffff88809ed7ec20 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000033906703 RCX: ffffc9000be23000
RDX: 000000000000b3f9 RSI: ffffffff81685456 RDI: 0000000000000006
RBP: ffff88809ed7eea8 R08: ffff888069a06500 R09: fffffbfff13332f1
R10: fffffbfff13332f0 R11: ffffffff89999783 R12: ffff888069a06500
R13: ffff888069a06dca R14: 0000000000000001 R15: 0000000033906703
 lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 __queue_work+0x2d9/0x1450 kernel/workqueue.c:1417
 __queue_delayed_work+0x2a9/0x390 kernel/workqueue.c:1522
 mod_delayed_work_on+0xe3/0x270 kernel/workqueue.c:1596
 mod_delayed_work include/linux/workqueue.h:542 [inline]
 addrconf_mod_dad_work+0x3f/0xa0 net/ipv6/addrconf.c:328
 addrconf_dad_start+0x76/0xb0 net/ipv6/addrconf.c:3976
 addrconf_add_linklocal+0x3ce/0x550 net/ipv6/addrconf.c:3155
 addrconf_addr_gen+0x3dc/0x440 net/ipv6/addrconf.c:3278
 addrconf_dev_config+0x1ea/0x2c0 net/ipv6/addrconf.c:3321
 addrconf_notify+0x41b/0x25f0 net/ipv6/addrconf.c:3556
 notifier_call_chain+0x179/0x380 kernel/notifier.c:93
 __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401
 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739
 call_netdevice_notifiers_extack net/core/dev.c:1751 [inline]
 call_netdevice_notifiers net/core/dev.c:1765 [inline]
 __dev_notify_flags+0x173/0x470 net/core/dev.c:7605
 dev_change_flags+0x10d/0x170 net/core/dev.c:7643
 dev_ifsioc+0x359/0xa50 net/core/dev_ioctl.c:237
 dev_ioctl+0x1b8/0xc70 net/core/dev_ioctl.c:488
 sock_do_ioctl+0x1d9/0x400 net/socket.c:973
 sock_ioctl+0x32f/0x6c0 net/socket.c:1074
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0x107b/0x17d0 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457ec9
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f50dc4bfc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 0000000020000100 RSI: 0000000000008914 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f50dc4c06d4
R13: 00000000004c356b R14: 00000000004d6140 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..