general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 3 PID: 3743 Comm: kworker/u16:4 Not tainted 5.15.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: floppy floppy_work_workfn
RIP: 0010:reset_interrupt+0xef/0x140 drivers/block/floppy.c:1793
Code: fd 84 db 0f 85 9b 11 98 04 e8 2d 1f 08 fd 48 8b 1d 06 99 e4 0b 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 40 48 8b 43 08 5b ff e0 e8 4f 3e 4e fd eb a8 e8 48
RSP: 0018:ffffc90002f8fd10 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff846f3173 RDI: 0000000000000008
RBP: ffffffff8c48e680 R08: 0000000000000080 R09: 0000000000000000
R10: ffffffff846f3166 R11: 0000000000000000 R12: ffffc90002f8fdb0
R13: ffffffff8c48e690 R14: ffff8880427b5900 R15: ffff888010c71800
FS:  0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f4448db0 CR3: 0000000022346000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace 566448937789cbc0 ]---
RIP: 0010:reset_interrupt+0xef/0x140 drivers/block/floppy.c:1793
Code: fd 84 db 0f 85 9b 11 98 04 e8 2d 1f 08 fd 48 8b 1d 06 99 e4 0b 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 40 48 8b 43 08 5b ff e0 e8 4f 3e 4e fd eb a8 e8 48
RSP: 0018:ffffc90002f8fd10 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff846f3173 RDI: 0000000000000008
RBP: ffffffff8c48e680 R08: 0000000000000080 R09: 0000000000000000
R10: ffffffff846f3166 R11: 0000000000000000 R12: ffffc90002f8fdb0
R13: ffffffff8c48e690 R14: ffff8880427b5900 R15: ffff888010c71800
FS:  0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f4448db0 CR3: 0000000022346000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	fd                   	std
   1:	84 db                	test   %bl,%bl
   3:	0f 85 9b 11 98 04    	jne    0x49811a4
   9:	e8 2d 1f 08 fd       	callq  0xfd081f3b
   e:	48 8b 1d 06 99 e4 0b 	mov    0xbe49906(%rip),%rbx        # 0xbe4991b
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df
  1f:	48 8d 7b 08          	lea    0x8(%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:	75 40                	jne    0x70
  30:	48 8b 43 08          	mov    0x8(%rbx),%rax
  34:	5b                   	pop    %rbx
  35:	ff e0                	jmpq   *%rax
  37:	e8 4f 3e 4e fd       	callq  0xfd4e3e8b
  3c:	eb a8                	jmp    0xffffffe6
  3e:	e8                   	.byte 0xe8
  3f:	48                   	rex.W