general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 8197 Comm: kworker/u16:93 Not tainted 6.5.0-syzkaller-13157-ge56b2b605799 #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+0xf7/0x230 drivers/block/floppy.c:1792
Code: fc 84 db 0f 85 83 00 00 00 e8 d5 1d 4a fc 48 8b 1d 2e 3a 1a 0d 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 0f 85 f9 00 00 00 48 8b 43 08 5b ff e0 e8 a3 1d 4a fc
RSP: 0018:ffffc9000c10fce8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff853caf2b RDI: 0000000000000008
RBP: ffffffff8d8f2800 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801a5d6800
R13: 0000000000000001 R14: ffffc9000c10fd88 R15: ffff888012c7d000
FS:  0000000000000000(0000) GS:ffff88806b700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4901352d58 CR3: 00000000278d5000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 process_one_work+0x887/0x15d0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8bb/0x1290 kernel/workqueue.c:2784
 kthread+0x33a/0x430 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:reset_interrupt+0xf7/0x230 drivers/block/floppy.c:1792
Code: fc 84 db 0f 85 83 00 00 00 e8 d5 1d 4a fc 48 8b 1d 2e 3a 1a 0d 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 0f 85 f9 00 00 00 48 8b 43 08 5b ff e0 e8 a3 1d 4a fc
RSP: 0018:ffffc9000c10fce8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff853caf2b RDI: 0000000000000008
RBP: ffffffff8d8f2800 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801a5d6800
R13: 0000000000000001 R14: ffffc9000c10fd88 R15: ffff888012c7d000
FS:  0000000000000000(0000) GS:ffff88806b700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1624f9d988 CR3: 0000000047352000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	fc                   	cld
   1:	84 db                	test   %bl,%bl
   3:	0f 85 83 00 00 00    	jne    0x8c
   9:	e8 d5 1d 4a fc       	call   0xfc4a1de3
   e:	48 8b 1d 2e 3a 1a 0d 	mov    0xd1a3a2e(%rip),%rbx        # 0xd1a3a43
  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:	0f 85 f9 00 00 00    	jne    0x12d
  34:	48 8b 43 08          	mov    0x8(%rbx),%rax
  38:	5b                   	pop    %rbx
  39:	ff e0                	jmp    *%rax
  3b:	e8 a3 1d 4a fc       	call   0xfc4a1de3