------------[ cut here ]------------
WARNING: CPU: 3 PID: 0 at drivers/block/floppy.c:1000 schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000
Modules linked in:
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 5.16.0-rc1-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: 37 ad ef fc 48 89 2d 10 f6 f1 0b 5b 48 c7 c2 60 b4 6a 8c 48 8b 35 e1 fa f1 0b bf 08 00 00 00 5d e9 a6 34 c4 fc e8 11 ad ef fc <0f> 0b eb d1 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 e8 fb ac ef fc
RSP: 0018:ffffc900005b8dd0 EFLAGS: 00010046
RAX: 0000000080010001 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8880114bd700 RSI: ffffffff84883acf RDI: 0000000000000003
RBP: ffffffff84882f90 R08: 0000000000000000 R09: ffffffff8c6ab467
R10: ffffffff84883a9f R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff84882f90 R14: 0000000000000000 R15: ffff888010c75000
FS:  0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000ffcb7324 CR3: 0000000077aad000 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:default_idle+0xb/0x10 arch/x86/kernel/process.c:734
Code: ff ff e8 38 a5 69 f8 e9 24 fe ff ff e8 5e 2d fd ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc eb 07 0f 00 2d 07 41 51 00 fb f4 <c3> 0f 1f 40 00 41 54 be 08 00 00 00 53 65 48 8b 1c 25 40 70 02 00
RSP: 0018:ffffc9000045fdf8 EFLAGS: 00000202
RAX: 000000000032ab75 RBX: ffff8880114bd700 RCX: ffffffff89522fcf
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000003 R08: 0000000000000001 R09: ffff88802cd3aa53
R10: ffffed10059a754a R11: 0000000000000000 R12: ffffed1002297ae0
R13: 0000000000000003 R14: ffffffff8d917350 R15: 0000000000000000
 default_idle_call+0x87/0xd0 kernel/sched/idle.c:112
 cpuidle_idle_call kernel/sched/idle.c:194 [inline]
 do_idle+0x401/0x590 kernel/sched/idle.c:306
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403
 start_secondary+0x265/0x340 arch/x86/kernel/smpboot.c:272
 secondary_startup_64_no_verify+0xb0/0xbb
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	e8 38 a5 69 f8       	callq  0xf869a53d
   5:	e9 24 fe ff ff       	jmpq   0xfffffe2e
   a:	e8 5e 2d fd ff       	callq  0xfffd2d6d
   f:	cc                   	int3
  10:	cc                   	int3
  11:	cc                   	int3
  12:	cc                   	int3
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
  16:	cc                   	int3
  17:	cc                   	int3
  18:	cc                   	int3
  19:	cc                   	int3
  1a:	cc                   	int3
  1b:	cc                   	int3
  1c:	cc                   	int3
  1d:	eb 07                	jmp    0x26
  1f:	0f 00 2d 07 41 51 00 	verw   0x514107(%rip)        # 0x51412d
  26:	fb                   	sti
  27:	f4                   	hlt
* 28:	c3                   	retq <-- trapping instruction
  29:	0f 1f 40 00          	nopl   0x0(%rax)
  2d:	41 54                	push   %r12
  2f:	be 08 00 00 00       	mov    $0x8,%esi
  34:	53                   	push   %rbx
  35:	65 48 8b 1c 25 40 70 	mov    %gs:0x27040,%rbx
  3c:	02 00