------------[ cut here ]------------
WARNING: CPU: 2 PID: 10741 at drivers/block/floppy.c:1000 schedule_bh+0x5f/0x70 drivers/block/floppy.c:1000
Modules linked in:
CPU: 2 PID: 10741 Comm: syz-executor.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: 07 70 06 fd 48 89 2d d0 8b e7 0b 5b 48 c7 c2 20 03 49 8c 48 8b 35 a1 90 e7 0b bf 08 00 00 00 5d e9 06 f3 da fc e8 e1 6f 06 fd <0f> 0b eb d1 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 e8 cb 6f 06 fd
RSP: 0018:ffffc90000780dd0 EFLAGS: 00010046
RAX: 0000000080010000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88800ec0c140 RSI: ffffffff84708ecf RDI: 0000000000000003
RBP: ffffffff8470b3e0 R08: 0000000000000000 R09: ffffffff8c490327
R10: ffffffff84708e9f R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff8470b3e0 R14: 0000000000000000 R15: ffff888010de2000
FS:  00007fce6cc99700(0000) GS:ffff88802cc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000d000 CR3: 000000004b2f3000 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:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
RIP: 0010:zref_in_nodemask mm/mmzone.c:49 [inline]
RIP: 0010:__next_zones_zonelist+0x73/0x140 mm/mmzone.c:69
Code: e9 92 00 00 00 49 8d 7d 50 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 74 08 3c 03 0f 8e b3 00 00 00 4d 63 6d 50 be 08 00 00 00 <49> 8d 45 3f 4d 85 ed 49 0f 49 c5 48 c1 f8 06 48 8d 7c c5 00 e8 84
RSP: 0018:ffffc900032df338 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffc900032df594
RDX: 1ffff11007fff863 RSI: 0000000000000008 RDI: ffff88803fffa050
RBP: ffff88800ec0d3c8 R08: 0000000000001ac4 R09: 0000000000001412
R10: 0000000000001ac4 R11: 0000000000000000 R12: ffff88803fffc310
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000001a12
 next_zones_zonelist include/linux/mmzone.h:1174 [inline]
 get_page_from_freelist+0x1438/0x2f50 mm/page_alloc.c:4048
 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5369
 alloc_pages+0x1a7/0x300 mm/mempolicy.c:2191
 folio_alloc+0x1c/0x70 mm/mempolicy.c:2201
 filemap_alloc_folio mm/filemap.c:1028 [inline]
 __filemap_get_folio+0x5f2/0xd60 mm/filemap.c:1943
 pagecache_get_page+0x2c/0x1a0 mm/folio-compat.c:125
 ext4_da_write_begin+0x3bc/0xad0 fs/ext4/inode.c:2961
 generic_perform_write+0x205/0x510 mm/filemap.c:3748
 ext4_buffered_write_iter+0x1ac/0x3b0 fs/ext4/file.c:269
 ext4_file_write_iter+0x423/0x14e0 fs/ext4/file.c:681
 call_write_iter include/linux/fs.h:2162 [inline]
 aio_write+0x350/0x7a0 fs/aio.c:1577
 __io_submit_one fs/aio.c:1832 [inline]
 io_submit_one+0xe09/0x1b80 fs/aio.c:1879
 __do_sys_io_submit fs/aio.c:1938 [inline]
 __se_sys_io_submit fs/aio.c:1908 [inline]
 __x64_sys_io_submit+0x18c/0x330 fs/aio.c:1908
 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: 0033:0x7fce6f723ae9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fce6cc99188 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007fce6f836f60 RCX: 00007fce6f723ae9
RDX: 0000000020000540 RSI: 0000000000001801 RDI: 00007fce6f812000
RBP: 00007fce6f77df25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc98aa7bf R14: 00007fce6cc99300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	e9 92 00 00 00       	jmpq   0x97
   5:	49 8d 7d 50          	lea    0x50(%r13),%rdi
   9:	48 89 f8             	mov    %rdi,%rax
   c:	48 c1 e8 03          	shr    $0x3,%rax
  10:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax
  15:	84 c0                	test   %al,%al
  17:	74 08                	je     0x21
  19:	3c 03                	cmp    $0x3,%al
  1b:	0f 8e b3 00 00 00    	jle    0xd4
  21:	4d 63 6d 50          	movslq 0x50(%r13),%r13
  25:	be 08 00 00 00       	mov    $0x8,%esi
* 2a:	49 8d 45 3f          	lea    0x3f(%r13),%rax <-- trapping instruction
  2e:	4d 85 ed             	test   %r13,%r13
  31:	49 0f 49 c5          	cmovns %r13,%rax
  35:	48 c1 f8 06          	sar    $0x6,%rax
  39:	48 8d 7c c5 00       	lea    0x0(%rbp,%rax,8),%rdi
  3e:	e8                   	.byte 0xe8
  3f:	84                   	.byte 0x84