BUG: unable to handle page fault for address: 0000000000055640
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 772f8067 P4D 772f8067 PUD 0 
Oops: Oops: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 186 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Workqueue: sync_wq local_pci_probe_callback
RIP: 0010:readl arch/x86/include/asm/io.h:59 [inline]
RIP: 0010:ioread32+0x87/0xc0 lib/iomap.c:99
Code: 2d 0e 3b 5a 0a 31 ff 89 ee e8 55 f0 e3 fc 85 ed 75 28 e8 dc f5 e3 fc bb ff ff ff ff 89 d8 5b 5d e9 ce 03 98 06 e8 c9 f5 e3 fc <8b> 1b e8 c2 f5 e3 fc 89 d8 5b 5d c3 cc cc cc cc e8 b4 f5 e3 fc 83
RSP: 0018:ffffc900031a7af0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000055640 RCX: ffffffff85266eab
RDX: ffff888021798000 RSI: ffffffff85266f17 RDI: ffff888021798000
RBP: ffff888033842838 R08: 0000000000000007 R09: 000000000003ffff
R10: 0000000000055640 R11: 0000000000000000 R12: 1ffff92000634f6d
R13: ffff8880236820d0 R14: ffff888033842880 R15: ffffc900031a7b88
FS:  0000000000000000(0000) GS:ffff888123dd8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000055640 CR3: 000000005d305000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 nhi_probe+0xdc/0x8f0 drivers/thunderbolt/nhi.c:1198
 nhi_pci_probe+0x322/0x5a0 drivers/thunderbolt/pci.c:479
 local_pci_probe+0xdd/0x1b0 drivers/pci/pci-driver.c:332
 local_pci_probe_callback+0x35/0x80 drivers/pci/pci-driver.c:361
 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: 0000000000055640
---[ end trace 0000000000000000 ]---
RIP: 0010:readl arch/x86/include/asm/io.h:59 [inline]
RIP: 0010:ioread32+0x87/0xc0 lib/iomap.c:99
Code: 2d 0e 3b 5a 0a 31 ff 89 ee e8 55 f0 e3 fc 85 ed 75 28 e8 dc f5 e3 fc bb ff ff ff ff 89 d8 5b 5d e9 ce 03 98 06 e8 c9 f5 e3 fc <8b> 1b e8 c2 f5 e3 fc 89 d8 5b 5d c3 cc cc cc cc e8 b4 f5 e3 fc 83
RSP: 0018:ffffc900031a7af0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000055640 RCX: ffffffff85266eab
RDX: ffff888021798000 RSI: ffffffff85266f17 RDI: ffff888021798000
RBP: ffff888033842838 R08: 0000000000000007 R09: 000000000003ffff
R10: 0000000000055640 R11: 0000000000000000 R12: 1ffff92000634f6d
R13: ffff8880236820d0 R14: ffff888033842880 R15: ffffc900031a7b88
FS:  0000000000000000(0000) GS:ffff888123dd8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000055640 CR3: 000000005d305000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	2d 0e 3b 5a 0a       	sub    $0xa5a3b0e,%eax
   5:	31 ff                	xor    %edi,%edi
   7:	89 ee                	mov    %ebp,%esi
   9:	e8 55 f0 e3 fc       	call   0xfce3f063
   e:	85 ed                	test   %ebp,%ebp
  10:	75 28                	jne    0x3a
  12:	e8 dc f5 e3 fc       	call   0xfce3f5f3
  17:	bb ff ff ff ff       	mov    $0xffffffff,%ebx
  1c:	89 d8                	mov    %ebx,%eax
  1e:	5b                   	pop    %rbx
  1f:	5d                   	pop    %rbp
  20:	e9 ce 03 98 06       	jmp    0x69803f3
  25:	e8 c9 f5 e3 fc       	call   0xfce3f5f3
* 2a:	8b 1b                	mov    (%rbx),%ebx <-- trapping instruction
  2c:	e8 c2 f5 e3 fc       	call   0xfce3f5f3
  31:	89 d8                	mov    %ebx,%eax
  33:	5b                   	pop    %rbx
  34:	5d                   	pop    %rbp
  35:	c3                   	ret
  36:	cc                   	int3
  37:	cc                   	int3
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	e8 b4 f5 e3 fc       	call   0xfce3f5f3
  3f:	83                   	.byte 0x83