Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 0 UID: 0 PID: 5707 Comm: kworker/0:5 Tainted: G S                  syzkaller #0 PREEMPT(full) 
Tainted: [S]=CPU_OUT_OF_SPEC
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: sync_wq local_pci_probe_callback
RIP: 0010:i915_pci_probe+0x58/0x470 drivers/gpu/drm/i915/i915_pci.c:961
Code: 7b 18 4c 89 f8 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ff e8 fa 94 86 fc 4d 8b 3f 49 8d 5f 1c 4d 8d 6f 23 49 89 dc 49 c1 ec 03 <43> 0f b6 04 34 84 c0 0f 85 be 02 00 00 4c 89 e8 48 c1 e8 03 42 0f
RSP: 0018:ffffc900049dfa50 EFLAGS: 00010207
RAX: 1ffffffff18e147b RBX: 000000000000001c RCX: ffff888077931f40
RDX: 0000000000000000 RSI: ffffffff8c70a3c0 RDI: ffff888022a90000
RBP: ffff888022a90000 R08: ffffffff909ac37f R09: 1ffffffff213586f
R10: dffffc0000000000 R11: ffffffff85afc240 R12: 0000000000000003
R13: 0000000000000023 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881248ab000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5b77935440 CR3: 0000000029e34000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 local_pci_probe drivers/pci/pci-driver.c:354 [inline]
 local_pci_probe_callback+0x120/0x1e0 drivers/pci/pci-driver.c:383
 process_one_work kernel/workqueue.c:3387 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3470
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3551
 kthread+0x38b/0x480 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:
---[ end trace 0000000000000000 ]---
RIP: 0010:i915_pci_probe+0x58/0x470 drivers/gpu/drm/i915/i915_pci.c:961
Code: 7b 18 4c 89 f8 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ff e8 fa 94 86 fc 4d 8b 3f 49 8d 5f 1c 4d 8d 6f 23 49 89 dc 49 c1 ec 03 <43> 0f b6 04 34 84 c0 0f 85 be 02 00 00 4c 89 e8 48 c1 e8 03 42 0f
RSP: 0018:ffffc900049dfa50 EFLAGS: 00010207
RAX: 1ffffffff18e147b RBX: 000000000000001c RCX: ffff888077931f40
RDX: 0000000000000000 RSI: ffffffff8c70a3c0 RDI: ffff888022a90000
RBP: ffff888022a90000 R08: ffffffff909ac37f R09: 1ffffffff213586f
R10: dffffc0000000000 R11: ffffffff85afc240 R12: 0000000000000003
R13: 0000000000000023 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881248ab000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f91fb25aff8 CR3: 000000007bdf6000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	7b 18                	jnp    0x1a
   2:	4c 89 f8             	mov    %r15,%rax
   5:	48 c1 e8 03          	shr    $0x3,%rax
   9:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1)
   e:	74 08                	je     0x18
  10:	4c 89 ff             	mov    %r15,%rdi
  13:	e8 fa 94 86 fc       	call   0xfc869512
  18:	4d 8b 3f             	mov    (%r15),%r15
  1b:	49 8d 5f 1c          	lea    0x1c(%r15),%rbx
  1f:	4d 8d 6f 23          	lea    0x23(%r15),%r13
  23:	49 89 dc             	mov    %rbx,%r12
  26:	49 c1 ec 03          	shr    $0x3,%r12
* 2a:	43 0f b6 04 34       	movzbl (%r12,%r14,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 be 02 00 00    	jne    0x2f5
  37:	4c 89 e8             	mov    %r13,%rax
  3a:	48 c1 e8 03          	shr    $0x3,%rax
  3e:	42                   	rex.X
  3f:	0f                   	.byte 0xf