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lockdep bfs error:-1
WARNING: CPU: 1 PID: 20636 at kernel/locking/lockdep.c:1960 print_bfs_bug+0x130/0x1e0 kernel/locking/lockdep.c:1960
Modules linked in:
CPU: 1 PID: 20636 Comm: syz-executor.0 Not tainted 5.9.0-rc7-next-20200929-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:print_bfs_bug+0x130/0x1e0 kernel/locking/lockdep.c:1960
Code: e2 08 00 74 2c 48 c7 c7 c0 af a6 8d e8 49 51 01 00 66 90 85 db 75 05 5b 5d 41 5c c3 89 ee 48 c7 c7 20 e8 ab 88 e8 cb 15 c1 06 <0f> 0b 5b 5d 41 5c c3 0f 0b e8 b2 ba e9 06 85 c0 74 d7 48 c7 c0 78
RSP: 0018:ffffc9000670ed08 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815df155 RDI: fffff52000ce1d93
RBP: 00000000ffffffff R08: 0000000000000001 R09: ffff8880ae520f8b
R10: 0000000000000000 R11: 207065646b636f6c R12: ffff8880a7282200
R13: dffffc0000000000 R14: 0000000000000007 R15: 0000000000000000
FS:  00007f3ebb059700(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff0ad90467 CR3: 000000009077b000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 check_irq_usage+0x6b4/0xc60 kernel/locking/lockdep.c:2585
 check_prev_add kernel/locking/lockdep.c:2823 [inline]
 check_prevs_add kernel/locking/lockdep.c:2944 [inline]
 validate_chain kernel/locking/lockdep.c:3562 [inline]
 __lock_acquire+0x2873/0x56d0 kernel/locking/lockdep.c:4796
 lock_acquire+0x1f2/0xaa0 kernel/locking/lockdep.c:5398
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
 alloc_object lib/debugobjects.c:239 [inline]
 __debug_object_init+0x5c6/0xd10 lib/debugobjects.c:548
 debug_object_init lib/debugobjects.c:595 [inline]
 debug_object_activate+0x32c/0x3e0 lib/debugobjects.c:681
 debug_rcu_head_queue kernel/rcu/rcu.h:176 [inline]
 kvfree_call_rcu+0x104/0x810 kernel/rcu/tree.c:3468
 __hw_addr_del_entry+0x2dd/0x3b0 net/core/dev_addr_lists.c:107
 __hw_addr_del_ex+0x129/0x150 net/core/dev_addr_lists.c:121
 __dev_mc_del net/core/dev_addr_lists.c:815 [inline]
 dev_mc_del+0xb9/0x110 net/core/dev_addr_lists.c:833
 igmp6_group_dropped+0x2fd/0xbd0 net/ipv6/mcast.c:705
 ipv6_mc_down+0x5c/0x280 net/ipv6/mcast.c:2538
 ipv6_mc_destroy_dev+0x1e/0x2f0 net/ipv6/mcast.c:2600
 addrconf_ifdown.isra.0+0xf36/0x1590 net/ipv6/addrconf.c:3836
 addrconf_notify+0x55c/0x2310 net/ipv6/addrconf.c:3627
 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2034
 call_netdevice_notifiers_extack net/core/dev.c:2046 [inline]
 call_netdevice_notifiers net/core/dev.c:2060 [inline]
 rollback_registered_many+0x97f/0x1550 net/core/dev.c:9394
 unregister_netdevice_many.part.0+0x1a/0x2f0 net/core/dev.c:10564
 unregister_netdevice_many+0x36/0x50 net/core/dev.c:10563
 vlan_device_event+0x1ab8/0x2030 net/8021q/vlan.c:494
 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2034
 call_netdevice_notifiers_extack net/core/dev.c:2046 [inline]
 call_netdevice_notifiers net/core/dev.c:2060 [inline]
 rollback_registered_many+0x97f/0x1550 net/core/dev.c:9394
 rollback_registered net/core/dev.c:9439 [inline]
 unregister_netdevice_queue+0x2dd/0x570 net/core/dev.c:10545
 unregister_vlan_dev+0x2c6/0x590 net/8021q/vlan.c:115
 vlan_ioctl_handler+0x311/0xef0 net/8021q/vlan.c:633
 sock_ioctl+0x4ee/0x770 net/socket.c:1156
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45dd99
Code: 0d b4 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3ebb058c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000001dc40 RCX: 000000000045dd99
RDX: 0000000020000380 RSI: 0000000000008982 RDI: 0000000000000004
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffe4ef3ecdf R14: 00007f3ebb0599c0 R15: 000000000118bf2c