------------[ cut here ]------------
lockdep bfs error:-1
WARNING: CPU: 0 PID: 144 at kernel/locking/lockdep.c:2022 print_bfs_bug+0x22/0x30 kernel/locking/lockdep.c:2022
Modules linked in:
CPU: 0 PID: 144 Comm: kworker/u4:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:print_bfs_bug+0x22/0x30 kernel/locking/lockdep.c:2022
Code: 79 ff ff ff 0f 1f 40 00 55 53 89 fb e8 07 e8 7a 02 89 c5 e8 50 e4 fe ff 85 ed 74 10 48 c7 c7 e0 34 0b 8a 89 de e8 9e ce 41 08 <0f> 0b 5b 5d c3 66 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41
RSP: 0018:ffffc900014ff368 EFLAGS: 00010046
RAX: 283cecbd10df2600 RBX: 00000000ffffffff RCX: ffff88801819bb80
RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000
RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed1017204f2c
R10: ffffed1017204f2c R11: 1ffff11017204f2b R12: 0000000000000005
R13: 00000000000003ff R14: ffffffff8f994070 R15: ffffffff92928438
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff3ab627f78 CR3: 0000000044203000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 check_irq_usage kernel/locking/lockdep.c:-1 [inline]
 check_prev_add kernel/locking/lockdep.c:3057 [inline]
 check_prevs_add kernel/locking/lockdep.c:3172 [inline]
 validate_chain kernel/locking/lockdep.c:3788 [inline]
 __lock_acquire+0x5968/0x7c60 kernel/locking/lockdep.c:5012
 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 alloc_object+0x1c0/0x650 lib/debugobjects.c:237
 lookup_object_or_alloc lib/debugobjects.c:591 [inline]
 __debug_object_init+0x154/0xa40 lib/debugobjects.c:621
 debug_timer_init kernel/time/timer.c:724 [inline]
 debug_init kernel/time/timer.c:772 [inline]
 init_timer_key+0x3d/0x2a0 kernel/time/timer.c:816
 batadv_iv_ogm_aggregate_new net/batman-adv/bat_iv_ogm.c:584 [inline]
 batadv_iv_ogm_queue_add+0xa06/0xcf0 net/batman-adv/bat_iv_ogm.c:670
 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:833 [inline]
 batadv_iv_ogm_schedule+0x81c/0xe90 net/batman-adv/bat_iv_ogm.c:868
 batadv_iv_send_outstanding_bat_ogm_packet+0x72d/0x840 net/batman-adv/bat_iv_ogm.c:1712
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>