syzbot

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/u8:36/6459
Modules linked in:
CPU: 0 UID: 0 PID: 6459 Comm: kworker/u8:36 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events_unbound linkwatch_event
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 87 46 dd 02 89 c5 e8 a0 89 ff ff 85 ed 74 13 83 fb ff 74 16 48 8d 3d f0 73 41 0d 89 de <67> 48 0f b9 3a 5b 5d c3 cc cc cc cc cc 48 c7 c7 f4 fb f2 8c e8 d5
RSP: 0018:ffffc900052df130 EFLAGS: 00010046
RAX: 000000000000003b RBX: 00000000ffffffff RCX: eae4f66f4ded6700
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8ede4e20
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000a5bdd5 R12: ffffffff95672938
R13: ffffffff926e8f18 R14: ffff888057419e40 R15: 000000000000001c
FS:  0000000000000000(0000) GS:ffff888126cef000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555586b9c808 CR3: 000000003429a000 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+0x2551/0x2cf0 kernel/locking/lockdep.c:5237
 lock_acquire+0x107/0x340 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:1558 [inline]
 task_rq_lock+0xbc/0x470 kernel/sched/core.c:739
 class_task_rq_lock_constructor kernel/sched/sched.h:1858 [inline]
 migrate_disable_switch kernel/sched/core.c:2350 [inline]
 __schedule+0x164a/0x5070 kernel/sched/core.c:6749
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7190
 irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x222/0x340 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 90 11 35 09 f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 8a 90 16 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 67 c8 41
RSP: 0018:ffffc900052df700 EFLAGS: 00000286
RAX: eae4f66f4ded6700 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000000000004 RSI: ffffffff8cfdee10 RDI: ffffffff8b3f57e0
RBP: ffffffff88d4ce20 R08: 0000000000000002 R09: ffffffff94dd6918
R10: 00000000a686bf15 R11: 00000000d69c72b7 R12: 0000000000000000
R13: ffff888039f51230 R14: 0000000000000001 R15: 0000000000000246
 rt_spin_lock+0x88/0x3e0 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_deactivate+0x118/0x1b0 net/sched/sch_generic.c:1397
 linkwatch_do_dev+0x10f/0x170 net/core/link_watch.c:184
 __linkwatch_run_queue+0x56d/0x7e0 net/core/link_watch.c:244
 linkwatch_event+0x4c/0x60 net/core/link_watch.c:304
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 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 87 46 dd 02       	call   0x2dd4698
  11:	89 c5                	mov    %eax,%ebp
  13:	e8 a0 89 ff ff       	call   0xffff89b8
  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 73 41 0d 	lea    0xd4173f0(%rip),%rdi        # 0xd417418
  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 f4 fb f2 8c 	mov    $0xffffffff8cf2fbf4,%rdi
  3e:	e8                   	.byte 0xe8
  3f:	d5                   	(bad)