c1 00                                            ..
status=d0
fdc_busy=0
cont=0000000000000000
current_req=0000000000000000
command_status=-1
general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.5.0-rc7-syzkaller-00004-gf7757129e3de #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: floppy floppy_work_workfn
RIP: 0010:reset_interrupt+0x17a/0x230 drivers/block/floppy.c:1789
Code: 9c 8e 33 fc e9 0e ff ff ff e8 f2 2b 50 fc 48 8b 1d eb 5a 0c 0d 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 80 00 00 00 48 8b 73 10 48 c7 c7 c0 29 f2 8a e8
RSP: 0018:ffffc900003d7ce0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff8535dcae RDI: 0000000000000010
RBP: ffffc900003d7d80 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff90f29cf8 R12: ffff88801465ad78
R13: ffff88801465ad00 R14: ffff888040015c00 R15: ffffffff8d6e91a0
FS:  0000000000000000(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f7354170 CR3: 0000000024b83000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
 worker_thread+0x687/0x1110 kernel/workqueue.c:2751
 kthread+0x33a/0x430 kernel/kthread.c:389
 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:reset_interrupt+0x17a/0x230 drivers/block/floppy.c:1789
Code: 9c 8e 33 fc e9 0e ff ff ff e8 f2 2b 50 fc 48 8b 1d eb 5a 0c 0d 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 80 00 00 00 48 8b 73 10 48 c7 c7 c0 29 f2 8a e8
RSP: 0018:ffffc900003d7ce0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff8535dcae RDI: 0000000000000010
RBP: ffffc900003d7d80 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff90f29cf8 R12: ffff88801465ad78
R13: ffff88801465ad00 R14: ffff888040015c00 R15: ffffffff8d6e91a0
FS:  0000000000000000(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f7354170 CR3: 0000000024b83000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	9c                   	pushf
   1:	8e 33                	mov    (%rbx),%?
   3:	fc                   	cld
   4:	e9 0e ff ff ff       	jmp    0xffffff17
   9:	e8 f2 2b 50 fc       	call   0xfc502c00
   e:	48 8b 1d eb 5a 0c 0d 	mov    0xd0c5aeb(%rip),%rbx        # 0xd0c5b00
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df
  1f:	48 8d 7b 10          	lea    0x10(%rbx),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 80 00 00 00    	jne    0xb4
  34:	48 8b 73 10          	mov    0x10(%rbx),%rsi
  38:	48 c7 c7 c0 29 f2 8a 	mov    $0xffffffff8af229c0,%rdi
  3f:	e8                   	.byte 0xe8