------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(!test_bit(class_idx, lock_classes_in_use))
WARNING: CPU: 0 PID: 5975 at kernel/locking/lockdep.c:5198 __lock_acquire+0x165b/0x2100 kernel/locking/lockdep.c:5198
Modules linked in:
CPU: 0 UID: 0 PID: 5975 Comm: kworker/0:8 Not tainted 6.14.0-rc7-syzkaller-00196-g88d324e69ea9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events nsim_dev_hwstats_traffic_work
RIP: 0010:__lock_acquire+0x165b/0x2100 kernel/locking/lockdep.c:5198
Code: 0f b6 04 08 84 c0 0f 85 31 0a 00 00 83 3d b0 3e a0 0e 00 75 19 90 48 c7 c7 40 b2 2a 8c 48 c7 c6 80 db 2a 8c e8 46 ac e4 ff 90 <0f> 0b 90 90 90 e9 be fd ff ff 90 0f 0b 90 e9 16 fd ff ff 90 e8 3c
RSP: 0018:ffffc90004dc71b0 EFLAGS: 00010046
RAX: 8c76bccb46757100 RBX: 0000000028f5c220 RCX: ffff88807c488000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88807c488b40 R08: ffffffff81819e52 R09: 1ffff110170c519a
R10: dffffc0000000000 R11: ffffed10170c519b R12: ffff88807c488ad4
R13: ffff88807c488000 R14: 0000000000000000 R15: ffff88807c488b60
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000004ad10000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:606
 raw_spin_rq_lock kernel/sched/sched.h:1521 [inline]
 rq_lock kernel/sched/sched.h:1852 [inline]
 __schedule+0x357/0x4c90 kernel/sched/core.c:6688
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7087
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_is_held_type+0x13b/0x190
Code: 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 42 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc90004dc77d8 EFLAGS: 00000206
RAX: 8c76bccb46757100 RBX: 0000000000000000 RCX: ffff88807c488000
RDX: 0000000000000000 RSI: ffffffff8c2ac600 RDI: ffffffff8c8100a0
RBP: 0000000000000002 R08: ffffc90004dc7a47 R09: ffffc90004dc7a20
R10: dffffc0000000000 R11: fffff520009b8f49 R12: 0000000000000246
R13: ffff88807c488000 R14: 00000000ffffffff R15: ffffffff8eb39440
 lock_is_held include/linux/lockdep.h:249 [inline]
 __might_resched+0xa5/0x780 kernel/sched/core.c:8729
 __mutex_lock_common kernel/locking/mutex.c:562 [inline]
 __mutex_lock+0x126/0x1010 kernel/locking/mutex.c:730
 nsim_dev_hwstats_traffic_work+0x33/0x1b0 drivers/net/netdevsim/hwstats.c:47
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xac0/0x18e0 kernel/workqueue.c:3319
 worker_thread+0x870/0xd30 kernel/workqueue.c:3400
 kthread+0x7ab/0x920 kernel/kthread.c:464
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
----------------
Code disassembly (best guess):
   0:	75 44                	jne    0x46
   2:	48 c7 04 24 00 00 00 	movq   $0x0,(%rsp)
   9:	00
   a:	9c                   	pushf
   b:	8f 04 24             	pop    (%rsp)
   e:	f7 04 24 00 02 00 00 	testl  $0x200,(%rsp)
  15:	75 4c                	jne    0x63
  17:	41 f7 c4 00 02 00 00 	test   $0x200,%r12d
  1e:	74 01                	je     0x21
  20:	fb                   	sti
  21:	65 48 8b 04 25 28 00 	mov    %gs:0x28,%rax
  28:	00 00
* 2a:	48 3b 44 24 08       	cmp    0x8(%rsp),%rax <-- trapping instruction
  2f:	75 42                	jne    0x73
  31:	89 d8                	mov    %ebx,%eax
  33:	48 83 c4 10          	add    $0x10,%rsp
  37:	5b                   	pop    %rbx
  38:	41 5c                	pop    %r12
  3a:	41 5d                	pop    %r13
  3c:	41 5e                	pop    %r14
  3e:	41 5f                	pop    %r15