general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] CPU: 0 PID: 4259 Comm: kworker/0:7 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events work_for_cpu_fn RIP: 0010:i915_pci_probe+0xa1/0x450 drivers/gpu/drm/i915/i915_pci.c:1172 Code: fd fc 49 8d 5e 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 5d 83 42 fd 48 8b 1b 48 83 c3 28 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 e0 02 00 00 0f b7 1b 89 de 83 e6 04 31 RSP: 0018:ffffc900031ffae0 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 0000000000000028 RCX: ffff888023491dc0 RDX: 0000000000000000 RSI: ffffffff8a7ed380 RDI: ffff88801bd8a000 RBP: ffffc900031ffbd0 R08: ffffffff901ee117 R09: 1ffffffff203dc22 R10: dffffc0000000000 R11: fffffbfff203dc23 R12: 1ffff9200063ff64 R13: ffff88801bd8a000 R14: ffffffff8a7ed380 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3c41aac000 CR3: 000000006301a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: local_pci_probe+0xc5/0x150 drivers/pci/pci-driver.c:323 work_for_cpu_fn+0x50/0x80 kernel/workqueue.c:5217 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 process_scheduled_works kernel/workqueue.c:2373 [inline] worker_thread+0xe01/0x12a0 kernel/workqueue.c:2462 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Modules linked in: ---[ end trace 0916e7099d10f173 ]--- RIP: 0010:i915_pci_probe+0xa1/0x450 drivers/gpu/drm/i915/i915_pci.c:1172 Code: fd fc 49 8d 5e 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 5d 83 42 fd 48 8b 1b 48 83 c3 28 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 e0 02 00 00 0f b7 1b 89 de 83 e6 04 31 RSP: 0018:ffffc900031ffae0 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 0000000000000028 RCX: ffff888023491dc0 RDX: 0000000000000000 RSI: ffffffff8a7ed380 RDI: ffff88801bd8a000 RBP: ffffc900031ffbd0 R08: ffffffff901ee117 R09: 1ffffffff203dc22 R10: dffffc0000000000 R11: fffffbfff203dc23 R12: 1ffff9200063ff64 R13: ffff88801bd8a000 R14: ffffffff8a7ed380 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3c41aac000 CR3: 00000000631f7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: fd std 1: fc cld 2: 49 8d 5e 18 lea 0x18(%r14),%rbx 6: 48 89 d8 mov %rbx,%rax 9: 48 c1 e8 03 shr $0x3,%rax d: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 12: 74 08 je 0x1c 14: 48 89 df mov %rbx,%rdi 17: e8 5d 83 42 fd call 0xfd428379 1c: 48 8b 1b mov (%rbx),%rbx 1f: 48 83 c3 28 add $0x28,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 e0 02 00 00 jne 0x317 37: 0f b7 1b movzwl (%rbx),%ebx 3a: 89 de mov %ebx,%esi 3c: 83 e6 04 and $0x4,%esi 3f: 31 .byte 0x31