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lockdep bfs error:-1
WARNING: CPU: 1 PID: 17518 at kernel/locking/lockdep.c:1960 print_bfs_bug+0x130/0x1e0 kernel/locking/lockdep.c:1960
Modules linked in:
CPU: 1 PID: 17518 Comm: syz-executor.2 Not tainted 5.9.0-rc7-next-20200930-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 7f 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 7b e5 c0 06 <0f> 0b 5b 5d 41 5c c3 0f 0b e8 62 82 e9 06 85 c0 74 d7 48 c7 c0 38
RSP: 0018:ffffc90006416708 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815df1a5 RDI: fffff52000c82cd3
RBP: 00000000ffffffff R08: 0000000000000001 R09: ffff8880ae520f8b
R10: 0000000000000000 R11: 207065646b636f6c R12: ffff88809da64100
R13: dffffc0000000000 R14: 0000000000000004 R15: 0000000000000000
FS:  00007f4ccb12b700(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30c33000 CR3: 0000000093cdc000 CR4: 00000000001506e0
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]
 __call_rcu kernel/rcu/tree.c:2943 [inline]
 call_rcu+0x2c/0x7d0 kernel/rcu/tree.c:3030
 radix_tree_node_free lib/radix-tree.c:309 [inline]
 delete_node+0xef/0x8c0 lib/radix-tree.c:572
 __radix_tree_delete+0x190/0x370 lib/radix-tree.c:1378
 radix_tree_delete_item+0xe7/0x230 lib/radix-tree.c:1429
 kernfs_put.part.0+0x294/0x540 fs/kernfs/dir.c:535
 kernfs_put+0x42/0x50 fs/kernfs/dir.c:511
 __kernfs_remove+0x6ef/0xa30 fs/kernfs/dir.c:1344
 kernfs_remove_by_name_ns+0x51/0xb0 fs/kernfs/dir.c:1516
 kernfs_remove_by_name include/linux/kernfs.h:593 [inline]
 remove_files+0x96/0x1c0 fs/sysfs/group.c:28
 sysfs_remove_group+0x87/0x170 fs/sysfs/group.c:289
 sysfs_remove_groups fs/sysfs/group.c:313 [inline]
 sysfs_remove_groups+0x5c/0xa0 fs/sysfs/group.c:305
 device_remove_groups drivers/base/core.c:2030 [inline]
 device_remove_attrs+0x123/0x160 drivers/base/core.c:2227
 device_del+0x4fa/0xec0 drivers/base/core.c:3107
 rollback_registered_many+0xd2d/0x1550 net/core/dev.c:9436
 unregister_netdevice_many.part.0+0x1a/0x2f0 net/core/dev.c:10579
 unregister_netdevice_many+0x36/0x50 net/core/dev.c:10578
 rtnl_delete_link net/core/rtnetlink.c:3055 [inline]
 rtnl_dellink+0x34a/0xa60 net/core/rtnetlink.c:3107
 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5563
 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2489
 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2362
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2416
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2449
 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:00007f4ccb12ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002d3c0 RCX: 000000000045dd99
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffebf2e54bf R14: 00007f4ccb12b9c0 R15: 000000000118bf2c