BUG: unable to handle page fault for address: 000000000001c000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 8000000037e31067 P4D 8000000037e31067 PUD 0 
Oops: Oops: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5691 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events azx_probe_work
RIP: 0010:readw arch/x86/include/asm/io.h:58 [inline]
RIP: 0010:snd_hdac_reg_readw include/sound/hdaudio.h:458 [inline]
RIP: 0010:azx_first_init sound/hda/controllers/intel.c:1953 [inline]
RIP: 0010:azx_probe_continue sound/hda/controllers/intel.c:2365 [inline]
RIP: 0010:azx_probe_work+0xa6e/0x2820 sound/hda/controllers/intel.c:1737
Code: 44 89 38 48 8b 7c 24 10 e8 2f 87 fd fb 49 bf 00 00 00 00 00 fc ff df 42 80 3c 3b 00 74 08 4c 89 e7 e8 36 45 23 f9 49 8b 04 24 <66> 44 8b 20 0f 1f 44 00 00 e8 94 d1 b9 f8 48 8b 84 24 b8 00 00 00
RSP: 0018:ffffc9000569f960 EFLAGS: 00010246
RAX: 000000000001c000 RBX: 1ffff11007dcb40b RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d88729a RDI: 00000000ffffffff
RBP: ffffc9000569faf0 R08: ffffffff8fafa337 R09: 1ffffffff1f5f466
R10: dffffc0000000000 R11: fffffbfff1f5f467 R12: ffff88803ee5a058
R13: dffffc0000000000 R14: ffff88803ee5a7f8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125c3e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000001c000 CR3: 00000000424ae000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
CR2: 000000000001c000
---[ end trace 0000000000000000 ]---
RIP: 0010:readw arch/x86/include/asm/io.h:58 [inline]
RIP: 0010:snd_hdac_reg_readw include/sound/hdaudio.h:458 [inline]
RIP: 0010:azx_first_init sound/hda/controllers/intel.c:1953 [inline]
RIP: 0010:azx_probe_continue sound/hda/controllers/intel.c:2365 [inline]
RIP: 0010:azx_probe_work+0xa6e/0x2820 sound/hda/controllers/intel.c:1737
Code: 44 89 38 48 8b 7c 24 10 e8 2f 87 fd fb 49 bf 00 00 00 00 00 fc ff df 42 80 3c 3b 00 74 08 4c 89 e7 e8 36 45 23 f9 49 8b 04 24 <66> 44 8b 20 0f 1f 44 00 00 e8 94 d1 b9 f8 48 8b 84 24 b8 00 00 00
RSP: 0018:ffffc9000569f960 EFLAGS: 00010246
RAX: 000000000001c000 RBX: 1ffff11007dcb40b RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d88729a RDI: 00000000ffffffff
RBP: ffffc9000569faf0 R08: ffffffff8fafa337 R09: 1ffffffff1f5f466
R10: dffffc0000000000 R11: fffffbfff1f5f467 R12: ffff88803ee5a058
R13: dffffc0000000000 R14: ffff88803ee5a7f8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125c3e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000001c000 CR3: 00000000424ae000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	44 89 38             	mov    %r15d,(%rax)
   3:	48 8b 7c 24 10       	mov    0x10(%rsp),%rdi
   8:	e8 2f 87 fd fb       	call   0xfbfd873c
   d:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  14:	fc ff df
  17:	42 80 3c 3b 00       	cmpb   $0x0,(%rbx,%r15,1)
  1c:	74 08                	je     0x26
  1e:	4c 89 e7             	mov    %r12,%rdi
  21:	e8 36 45 23 f9       	call   0xf923455c
  26:	49 8b 04 24          	mov    (%r12),%rax
* 2a:	66 44 8b 20          	mov    (%rax),%r12w <-- trapping instruction
  2e:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  33:	e8 94 d1 b9 f8       	call   0xf8b9d1cc
  38:	48 8b 84 24 b8 00 00 	mov    0xb8(%rsp),%rax
  3f:	00