------------[ cut here ]------------
WARNING: CPU: 3 PID: 31 at drivers/block/floppy.c:1000 schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000
Modules linked in:

CPU: 3 PID: 31 Comm: ksoftirqd/3 Not tainted 5.15.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000
Code: 57 46 06 fd 48 89 2d a0 00 e7 0b 5b 48 c7 c2 80 1a 4a 8c 48 8b 35 71 05 e7 0b bf 08 00 00 00 5d e9 b6 ce da fc e8 31 46 06 fd <0f> 0b eb d1 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 e8 1b 46 06 fd
RSP: 0018:ffffc900005b8dd0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000100
RDX: ffff88801156d700 RSI: ffffffff8471803f RDI: 0000000000000003
RBP: ffffffff8471a550 R08: 0000000000000000 R09: ffffffff8c4a1a87
R10: ffffffff8471800f R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff8471a550 R14: 0000000000000000 R15: ffff888010c75000
FS:  0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f742b004 CR3: 0000000053f2f000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 floppy_interrupt+0x228/0x340 drivers/block/floppy.c:1766
 floppy_hardint+0x1a7/0x200 arch/x86/include/asm/floppy.h:66
 __handle_irq_event_percpu+0x303/0x8f0 kernel/irq/handle.c:158
 handle_irq_event_percpu kernel/irq/handle.c:198 [inline]
 handle_irq_event+0x102/0x280 kernel/irq/handle.c:215
 handle_edge_irq+0x25f/0xd00 kernel/irq/chip.c:822
 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
 handle_irq arch/x86/kernel/irq.c:231 [inline]
 __common_interrupt+0x9d/0x210 arch/x86/kernel/irq.c:250
 common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240
 </IRQ>
 <TASK>
 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:629
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 6a 5c 1f f8 48 89 ef e8 b2 d2 1f f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> d3 9c 12 f8 65 8b 05 8c f1 c4 76 85 c0 74 0a 5b 5d c3 e8 a0 8b
RSP: 0018:ffffc9000058fc40 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1ae15e9
RDX: 0000000000000000 RSI: 0000000000000101 RDI: 0000000000000001
RBP: ffffffff90542f10 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817e0a58 R11: 000000000008608a R12: dffffc0000000000
R13: ffffffff898d6280 R14: 1ffff920000b1f8d R15: ffff8880531a3a20
 debug_object_deactivate lib/debugobjects.c:757 [inline]
 debug_object_deactivate+0x264/0x300 lib/debugobjects.c:723
 debug_rcu_head_unqueue kernel/rcu/rcu.h:188 [inline]
 rcu_do_batch kernel/rcu/tree.c:2499 [inline]
 rcu_core+0x763/0x1470 kernel/rcu/tree.c:2741
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 run_ksoftirqd kernel/softirq.c:920 [inline]
 run_ksoftirqd+0x2d/0x60 kernel/softirq.c:912
 smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	24 10                	and    $0x10,%al
   2:	e8 6a 5c 1f f8       	callq  0xf81f5c71
   7:	48 89 ef             	mov    %rbp,%rdi
   a:	e8 b2 d2 1f f8       	callq  0xf81fd2c1
   f:	81 e3 00 02 00 00    	and    $0x200,%ebx
  15:	75 25                	jne    0x3c
  17:	9c                   	pushfq
  18:	58                   	pop    %rax
  19:	f6 c4 02             	test   $0x2,%ah
  1c:	75 2d                	jne    0x4b
  1e:	48 85 db             	test   %rbx,%rbx
  21:	74 01                	je     0x24
  23:	fb                   	sti
  24:	bf 01 00 00 00       	mov    $0x1,%edi
* 29:	e8 d3 9c 12 f8       	callq  0xf8129d01 <-- trapping instruction
  2e:	65 8b 05 8c f1 c4 76 	mov    %gs:0x76c4f18c(%rip),%eax        # 0x76c4f1c1
  35:	85 c0                	test   %eax,%eax
  37:	74 0a                	je     0x43
  39:	5b                   	pop    %rbx
  3a:	5d                   	pop    %rbp
  3b:	c3                   	retq
  3c:	e8                   	.byte 0xe8
  3d:	a0                   	.byte 0xa0
  3e:	8b                   	.byte 0x8b