------------[ cut here ]------------
WARNING: CPU: 2 PID: 0 at drivers/block/floppy.c:1000 schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000
Modules linked in:
CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.17.0-rc3-syzkaller-00116-gf1baf68e1383 #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: a7 cc fc fc 48 89 2d 70 f1 04 0c 5b 48 c7 c2 20 b1 6a 8c 48 8b 35 41 f6 04 0c bf 08 00 00 00 5d e9 46 fc d0 fc e8 81 cc fc fc <0f> 0b eb d1 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 e8 6b cc fc fc
RSP: 0018:ffffc90000780ce8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000100
RDX: ffff8880119261c0 RSI: ffffffff847ae1af RDI: 0000000000000003
RBP: ffffffff847b0700 R08: 0000000000000000 R09: ffffffff8c6ab127
R10: ffffffff847ae17f R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff847b0700 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88802cc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c61864090 CR3: 000000001c2dc000 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+0x22b/0x880 kernel/irq/handle.c:158
 handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
 handle_irq_event+0xa7/0x1e0 kernel/irq/handle.c:210
 handle_edge_irq+0x25f/0xd00 kernel/irq/chip.c:820
 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+0x4d/0xc0 arch/x86/kernel/irq.c:240
 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:629
RIP: 0010:__do_softirq+0x196/0x9c2 kernel/softirq.c:544
Code: 00 48 01 f0 48 89 44 24 18 48 c7 c7 80 ed aa 89 e8 9f cd ca ff 65 66 c7 05 75 91 83 76 00 00 e8 40 f2 fd f7 fb b8 ff ff ff ff <48> c7 c3 c0 a0 80 8b 41 0f bc c5 41 89 c7 41 83 c7 01 75 47 e9 bd
RSP: 0018:ffffc90000780f70 EFLAGS: 00000202
RAX: 00000000ffffffff RBX: ffff8880119261c0 RCX: 1ffffffff1b26c29
RDX: 0000000000000000 RSI: 0000000000000101 RDI: 0000000000000000
RBP: ffff888011a701c0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817df408 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000082 R14: 0000000000000000 R15: 0000000000000000
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:default_idle+0xb/0x10 arch/x86/kernel/process.c:734
Code: ff ff e8 b8 dc 70 f8 e9 24 fe ff ff e8 6e 1f fd ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc eb 07 0f 00 2d 57 f4 58 00 fb f4 <c3> 0f 1f 40 00 41 54 be 08 00 00 00 53 65 48 8b 1c 25 00 70 02 00
RSP: 0018:ffffc9000066fdf8 EFLAGS: 00000206
RAX: 00000000009c6239 RBX: ffff8880119261c0 RCX: ffffffff894ac471
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000002 R08: 0000000000000001 R09: ffff88802cc3acd3
R10: ffffed100598759a R11: 0000000000000000 R12: ffffed1002324c38
R13: 0000000000000002 R14: ffffffff8d938cd0 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+0xc3/0xcb
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 48 01             	add    %cl,0x1(%rax)
   3:	f0 48 89 44 24 18    	lock mov %rax,0x18(%rsp)
   9:	48 c7 c7 80 ed aa 89 	mov    $0xffffffff89aaed80,%rdi
  10:	e8 9f cd ca ff       	callq  0xffcacdb4
  15:	65 66 c7 05 75 91 83 	movw   $0x0,%gs:0x76839175(%rip)        # 0x76839194
  1c:	76 00 00
  1f:	e8 40 f2 fd f7       	callq  0xf7fdf264
  24:	fb                   	sti
  25:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
* 2a:	48 c7 c3 c0 a0 80 8b 	mov    $0xffffffff8b80a0c0,%rbx <-- trapping instruction
  31:	41 0f bc c5          	bsf    %r13d,%eax
  35:	41 89 c7             	mov    %eax,%r15d
  38:	41 83 c7 01          	add    $0x1,%r15d
  3c:	75 47                	jne    0x85
  3e:	e9                   	.byte 0xe9
  3f:	bd                   	.byte 0xbd