bridge_slave_0: left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
pim6reg: left allmulticast mode
batman_adv: batadv0: Interface deactivated: gretap1
Increase LOCKDEP_CIRCULAR_QUEUE_BITS to avoid this warning:
------------[ cut here ]------------
lockdep bfs error:-1
WARNING: kernel/locking/lockdep.c:2059 at print_bfs_bug+0x20/0x40 kernel/locking/lockdep.c:2059, CPU#0: kworker/u8:11/3166
Modules linked in:
CPU: 0 UID: 0 PID: 3166 Comm: kworker/u8:11 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Workqueue: netns cleanup_net
RIP: 0010:print_bfs_bug+0x22/0x40 kernel/locking/lockdep.c:2059
Code: 90 90 90 90 90 90 90 90 55 53 89 fb e8 47 d5 1d 03 89 c5 e8 c0 89 ff ff 85 ed 74 13 83 fb ff 74 16 48 8d 3d f0 46 11 0e 89 de <67> 48 0f b9 3a 5b 5d c3 cc cc cc cc cc 48 c7 c7 d8 cf a0 8d e8 95
RSP: 0018:ffffc90009be6e98 EFLAGS: 00010046
RAX: 000000000000003b RBX: 00000000ffffffff RCX: d06f3e94e1c3f700
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8fb2fa60
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff5200137cd85 R12: 000000000000001f
R13: ffffffff9359dbc0 R14: ffff888038993e00 R15: ffffffff96719768
FS:  0000000000000000(0000) GS:ffff888125c41000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055960864f138 CR3: 000000000dfb0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 check_irq_usage kernel/locking/lockdep.c:-1 [inline]
 check_prev_add kernel/locking/lockdep.c:3169 [inline]
 check_prevs_add kernel/locking/lockdep.c:3284 [inline]
 validate_chain kernel/locking/lockdep.c:3908 [inline]
 __lock_acquire+0x24f0/0x2ce0 kernel/locking/lockdep.c:5237
 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
 _raw_spin_lock_nested+0x32/0x50 kernel/locking/spinlock.c:382
 raw_spin_rq_lock_nested+0x2d/0x160 kernel/sched/core.c:667
 raw_spin_rq_lock kernel/sched/sched.h:1653 [inline]
 _task_rq_lock+0xc0/0x440 kernel/sched/core.c:762
 class_task_rq_lock_constructor kernel/sched/sched.h:1963 [inline]
 migrate_disable_switch kernel/sched/core.c:2464 [inline]
 __schedule+0x185b/0x5500 kernel/sched/core.c:7089
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7556
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x221/0x350 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 61 5c a2 09 f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 2b 97 fc 10 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 d0 25 a6 09 cc 48 8d 3d 58 9b 11
RSP: 0018:ffffc90009be7460 EFLAGS: 00000286
RAX: d06f3e94e1c3f700 RBX: 0000000000000000 RCX: 0000000000000046
RDX: ffffffff9359dee0 RSI: ffffffff8daf5218 RDI: ffffffff8bca7780
RBP: ffffffff893c8540 R08: 0000000000000002 R09: ffffffff95f120c0
R10: 000000009088ab9c R11: 000000002caa0ad2 R12: 0000000000000000
R13: ffff88808308a230 R14: 0000000000000001 R15: 0000000000000246
 rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56
 spin_lock_bh include/linux/spinlock_rt.h:90 [inline]
 dev_reset_queue+0x160/0x1f0 include/net/sch_generic.h:753
 netdev_for_each_tx_queue include/linux/netdevice.h:2735 [inline]
 dev_deactivate_many+0x799/0xdb0 net/sched/sch_generic.c:1394
 __dev_close_many+0x180/0x6e0 net/core/dev.c:1760
 netif_close_many+0x222/0x410 net/core/dev.c:1802
 unregister_netdevice_many_notify+0xb76/0x2110 net/core/dev.c:12416
 ops_exit_rtnl_list net/core/net_namespace.c:187 [inline]
 ops_undo_list+0x391/0x8d0 net/core/net_namespace.c:248
 cleanup_net+0x575/0x810 net/core/net_namespace.c:702
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	55                   	push   %rbp
   9:	53                   	push   %rbx
   a:	89 fb                	mov    %edi,%ebx
   c:	e8 47 d5 1d 03       	call   0x31dd558
  11:	89 c5                	mov    %eax,%ebp
  13:	e8 c0 89 ff ff       	call   0xffff89d8
  18:	85 ed                	test   %ebp,%ebp
  1a:	74 13                	je     0x2f
  1c:	83 fb ff             	cmp    $0xffffffff,%ebx
  1f:	74 16                	je     0x37
  21:	48 8d 3d f0 46 11 0e 	lea    0xe1146f0(%rip),%rdi        # 0xe114718
  28:	89 de                	mov    %ebx,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	5b                   	pop    %rbx
  30:	5d                   	pop    %rbp
  31:	c3                   	ret
  32:	cc                   	int3
  33:	cc                   	int3
  34:	cc                   	int3
  35:	cc                   	int3
  36:	cc                   	int3
  37:	48 c7 c7 d8 cf a0 8d 	mov    $0xffffffff8da0cfd8,%rdi
  3e:	e8                   	.byte 0xe8
  3f:	95                   	xchg   %eax,%ebp