Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 0 UID: 0 PID: 5709 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: sync_wq local_pci_probe_callback
RIP: 0010:i915_pci_probe+0x57/0x480 drivers/gpu/drm/i915/i915_pci.c:961
Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f6 03 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 6c 24 18 4c 8d 6d 1c 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 86 03 00 00
RSP: 0018:ffffc9000451fbc0 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffff8880232f4000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: ffffffff85d8d20d RDI: ffffffff8c43a498
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c43a480
R13: 000000000000001c R14: ffffffff85d8d1f0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888123dd8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff4dfe3fff8 CR3: 0000000054d86000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 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:
---[ end trace 0000000000000000 ]---
RIP: 0010:i915_pci_probe+0x57/0x480 drivers/gpu/drm/i915/i915_pci.c:961
Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f6 03 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 6c 24 18 4c 8d 6d 1c 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 86 03 00 00
RSP: 0018:ffffc9000451fbc0 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffff8880232f4000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: ffffffff85d8d20d RDI: ffffffff8c43a498
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8c43a480
R13: 000000000000001c R14: ffffffff85d8d1f0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888123dd8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e4189b3b60 CR3: 00000000320e3000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	89 fa                	mov    %edi,%edx
   2:	48 c1 ea 03          	shr    $0x3,%rdx
   6:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   a:	0f 85 f6 03 00 00    	jne    0x406
  10:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  17:	fc ff df
  1a:	49 8b 6c 24 18       	mov    0x18(%r12),%rbp
  1f:	4c 8d 6d 1c          	lea    0x1c(%rbp),%r13
  23:	4c 89 ea             	mov    %r13,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2e:	4c 89 ea             	mov    %r13,%rdx
  31:	83 e2 07             	and    $0x7,%edx
  34:	38 d0                	cmp    %dl,%al
  36:	7f 08                	jg     0x40
  38:	84 c0                	test   %al,%al
  3a:	0f 85 86 03 00 00    	jne    0x3c6