bridge0: port 2(bridge_slave_1) entered disabled state
bridge_slave_0: left allmulticast mode
bridge_slave_0: left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
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#1: kworker/u8:4/87
Modules linked in:
CPU: 1 UID: 0 PID: 87 Comm: kworker/u8:4 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
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 77 cf ed 02 89 c5 e8 10 8a ff ff 85 ed 74 13 83 fb ff 74 16 48 8d 3d b0 c1 ab 0d 89 de <67> 48 0f b9 3a 5b 5d c3 cc cc cc cc cc 48 c7 c7 39 fb 4a 8d e8 b5
RSP: 0018:ffffc9000153ee10 EFLAGS: 00010046
RAX: 000000000000003b RBX: 00000000ffffffff RCX: 4085918c3df99600
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8f4afdd0
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff520002a7d71 R12: ffffffff95ee1868
R13: ffffffff92e1a130 R14: ffff88801f2a0000 R15: 0000000000000034
FS:  0000000000000000(0000) GS:ffff8881266c9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efebdf5899a CR3: 000000000d9b4000 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+0x2550/0x2cf0 kernel/locking/lockdep.c:5237
 lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868
 _raw_spin_lock_nested+0x32/0x50 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:639
 raw_spin_rq_lock kernel/sched/sched.h:1580 [inline]
 task_rq_lock+0xbc/0x460 kernel/sched/core.c:739
 class_task_rq_lock_constructor kernel/sched/sched.h:1880 [inline]
 migrate_disable_switch kernel/sched/core.c:2350 [inline]
 __schedule+0x1653/0x4fe0 kernel/sched/core.c:6753
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7194
 irqentry_exit+0x597/0x620 kernel/entry/common.c:216
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x221/0x330 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 71 8d 6e 09 f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 4b 8e 86 10 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d e8 15 ac
RSP: 0018:ffffc9000153f3e0 EFLAGS: 00000282
RAX: 4085918c3df99600 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000000000005 RSI: ffffffff8d592b5d RDI: ffffffff8b85e880
RBP: ffffffff8905afe0 R08: 0000000000000002 R09: ffffffff9577f708
R10: 00000000d12c5f37 R11: 000000006da07d7b R12: 0000000000000000
R13: ffff88802dfeca30 R14: 0000000000000001 R15: 0000000000000246
 rt_spin_lock+0x83/0x400 kernel/locking/spinlock_rt.c:56
 spin_lock_bh include/linux/spinlock_rt.h:88 [inline]
 dev_reset_queue+0x110/0x1f0 net/sched/sch_generic.c:1308
 netdev_for_each_tx_queue include/linux/netdevice.h:2680 [inline]
 dev_deactivate_many+0x71f/0xd40 net/sched/sch_generic.c:1374
 __dev_close_many+0x17b/0x6d0 net/core/dev.c:1753
 netif_close_many+0x225/0x420 net/core/dev.c:1794
 unregister_netdevice_many_notify+0xb47/0x2360 net/core/dev.c:12366
 ops_exit_rtnl_list net/core/net_namespace.c:187 [inline]
 ops_undo_list+0x3d3/0x940 net/core/net_namespace.c:248
 cleanup_net+0x4e5/0x7b0 net/core/net_namespace.c:696
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340
 worker_thread+0xda6/0x1360 kernel/workqueue.c:3421
 kthread+0x726/0x8b0 kernel/kthread.c:463
 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </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 77 cf ed 02       	call   0x2edcf88
  11:	89 c5                	mov    %eax,%ebp
  13:	e8 10 8a ff ff       	call   0xffff8a28
  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 b0 c1 ab 0d 	lea    0xdabc1b0(%rip),%rdi        # 0xdabc1d8
  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 39 fb 4a 8d 	mov    $0xffffffff8d4afb39,%rdi
  3e:	e8                   	.byte 0xe8
  3f:	b5                   	.byte 0xb5