BUG: unable to handle page fault for address: 000000000001c000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 7a570067 P4D 7a570067 PUD 0 
Oops: Oops: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5720 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
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+0xa44/0x2640 sound/hda/controllers/intel.c:1737
Code: 4c 89 f7 e8 9e 3a dd fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 61 1a 00 00 48 8b 85 68 f7 ff ff <66> 44 8b 28 45 89 ef 0f 1f 44 00 00 e8 7b 9e 8a f8 48 8b 54 24 40
RSP: 0018:ffffc90004a6fb00 EFLAGS: 00010246
RAX: 000000000001c000 RBX: ffff88807c122058 RCX: 0000000000000000
RDX: 1ffff1100f82440b RSI: ffffffff855cfff2 RDI: 0000000000000001
RBP: ffff88807c1228f0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880203604c4 R14: ffff888023694000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888123dd8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000001c000 CR3: 000000005eee5000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 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+0xa44/0x2640 sound/hda/controllers/intel.c:1737
Code: 4c 89 f7 e8 9e 3a dd fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 61 1a 00 00 48 8b 85 68 f7 ff ff <66> 44 8b 28 45 89 ef 0f 1f 44 00 00 e8 7b 9e 8a f8 48 8b 54 24 40
RSP: 0018:ffffc90004a6fb00 EFLAGS: 00010246
RAX: 000000000001c000 RBX: ffff88807c122058 RCX: 0000000000000000
RDX: 1ffff1100f82440b RSI: ffffffff855cfff2 RDI: 0000000000000001
RBP: ffff88807c1228f0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880203604c4 R14: ffff888023694000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888123dd8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000001c000 CR3: 000000005eee5000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	4c 89 f7             	mov    %r14,%rdi
   3:	e8 9e 3a dd fb       	call   0xfbdd3aa6
   8:	48 89 da             	mov    %rbx,%rdx
   b:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  12:	fc ff df
  15:	48 c1 ea 03          	shr    $0x3,%rdx
  19:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  1d:	0f 85 61 1a 00 00    	jne    0x1a84
  23:	48 8b 85 68 f7 ff ff 	mov    -0x898(%rbp),%rax
* 2a:	66 44 8b 28          	mov    (%rax),%r13w <-- trapping instruction
  2e:	45 89 ef             	mov    %r13d,%r15d
  31:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  36:	e8 7b 9e 8a f8       	call   0xf88a9eb6
  3b:	48 8b 54 24 40       	mov    0x40(%rsp),%rdx