------------[ cut here ]------------
WARNING: CPU: 2 PID: 12145 at drivers/block/floppy.c:1000 schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000
Modules linked in:
CPU: 2 PID: 12145 Comm: syz-executor.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: 77 08 ef fc 48 89 2d f0 ef f2 0b 5b 48 c7 c2 c0 94 6a 8c 48 8b 35 c1 f4 f2 0b bf 08 00 00 00 5d e9 56 8b c3 fc e8 51 08 ef fc <0f> 0b eb d1 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 e8 3b 08 ef fc
RSP: 0018:ffffc90000780dd0 EFLAGS: 00010046
RAX: 0000000080010001 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88804ae36240 RSI: ffffffff8488190f RDI: 0000000000000003
RBP: ffffffff84883e20 R08: 0000000000000000 R09: ffffffff8c6a94c7
R10: ffffffff848818df R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff84883e20 R14: 0000000000000000 R15: ffff888010de5000
FS:  000055555634f400(0000) GS:ffff88802cc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005630aa8ed783 CR3: 000000006ce7a000 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:finish_task_switch.isra.0+0x323/0xb80 kernel/sched/core.c:4852
Code: d3 12 02 08 85 c0 75 02 0f 0b 48 85 db 0f 85 25 01 00 00 4c 89 f7 e8 fc f7 ff ff e8 e7 49 2d 00 fb 65 48 8b 1c 25 40 70 02 00 <48> 8d bb 80 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc90000937ae8 EFLAGS: 00000202
RAX: 0000000000000f8f RBX: ffff88804ae36240 RCX: 1ffffffff1b22161
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000937b30 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817d65d8 R11: 0000000000000001 R12: ffff88802cc3a858
R13: ffff8880195b62c0 R14: ffff88802cc39b00 R15: ffff88802cc3a538
 context_switch kernel/sched/core.c:4975 [inline]
 __schedule+0xaa2/0x4940 kernel/sched/core.c:6253
 schedule+0xd2/0x260 kernel/sched/core.c:6326
 freezable_schedule include/linux/freezer.h:172 [inline]
 do_nanosleep+0x24e/0x690 kernel/time/hrtimer.c:2044
 hrtimer_nanosleep+0x1f9/0x4a0 kernel/time/hrtimer.c:2097
 common_nsleep+0xa2/0xc0 kernel/time/posix-timers.c:1227
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1267 [inline]
 __se_sys_clock_nanosleep kernel/time/posix-timers.c:1245 [inline]
 __x64_sys_clock_nanosleep+0x2f4/0x430 kernel/time/posix-timers.c:1245
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fd0f7699811
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 aa e7 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 e3 e7 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f
RSP: 002b:00007ffdbe6007d0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00000000003829d7 RCX: 00007fd0f7699811
RDX: 00007ffdbe600810 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: 00007ffdbe69d080
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fd0f7787f60
R13: 00007fd0f7788b60 R14: 00007fd0f7787f60 R15: 0000000000382696
 </TASK>
----------------
Code disassembly (best guess):
   0:	d3 12                	rcll   %cl,(%rdx)
   2:	02 08                	add    (%rax),%cl
   4:	85 c0                	test   %eax,%eax
   6:	75 02                	jne    0xa
   8:	0f 0b                	ud2
   a:	48 85 db             	test   %rbx,%rbx
   d:	0f 85 25 01 00 00    	jne    0x138
  13:	4c 89 f7             	mov    %r14,%rdi
  16:	e8 fc f7 ff ff       	callq  0xfffff817
  1b:	e8 e7 49 2d 00       	callq  0x2d4a07
  20:	fb                   	sti
  21:	65 48 8b 1c 25 40 70 	mov    %gs:0x27040,%rbx
  28:	02 00
* 2a:	48 8d bb 80 15 00 00 	lea    0x1580(%rbx),%rdi <-- trapping instruction
  31:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  38:	fc ff df
  3b:	48 89 fa             	mov    %rdi,%rdx
  3e:	48                   	rex.W
  3f:	c1                   	.byte 0xc1