general protection fault in i915_pci_probe

Status: upstream: reported C repro on 2026/08/04 23:47
Reported-by: syzbot+1cf59a49c4b7f302073e@syzkaller.appspotmail.com
First crash: 16d, last: 3d21h
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 general protection fault in i915_pci_probe 2 syz, C 7 12d 16d 0/2 upstream: reported C repro on 2026/08/05 00:26
upstream general protection fault in i915_pci_probe intel-gfx prio:low 2 syz, C 81 3d14h 15d 0/29 upstream: reported C repro on 2026/08/05 22:44
linux-5.15 general protection fault in i915_pci_probe origin:upstream 2 syz, C 7 4d11h 16d 0/3 upstream: reported C repro on 2026/08/04 21:46

Sample crash report:
general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 4303 Comm: kworker/0:4 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+0x56/0x470 drivers/gpu/drm/i915/i915_pci.c:1330
Code: 7b 18 4c 89 f8 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ff e8 ec 4f 23 fd 4d 8b 3f 49 8d 5f 11 4d 8d 6f 14 49 89 dc 49 c1 ec 03 <43> 0f b6 04 34 84 c0 0f 85 ad 02 00 00 4c 89 e8 48 c1 e8 03 42 0f
RSP: 0018:ffffc90004197b90 EFLAGS: 00010202
RAX: 1ffffffff15c74b3 RBX: 0000000000000011 RCX: ffff88802f47da00
RDX: 0000000000000000 RSI: ffffffff8ae3a580 RDI: ffff8881432cc000
RBP: dffffc0000000000 R08: ffffffff90b1028f R09: 1ffffffff2162051
R10: dffffc0000000000 R11: fffffbfff2162052 R12: 0000000000000002
R13: 0000000000000014 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e324008 CR3: 00000000281eb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 local_pci_probe+0xc5/0x150 drivers/pci/pci-driver.c:324
 work_for_cpu_fn+0x50/0x80 kernel/workqueue.c:5184
 process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:i915_pci_probe+0x56/0x470 drivers/gpu/drm/i915/i915_pci.c:1330
Code: 7b 18 4c 89 f8 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ff e8 ec 4f 23 fd 4d 8b 3f 49 8d 5f 11 4d 8d 6f 14 49 89 dc 49 c1 ec 03 <43> 0f b6 04 34 84 c0 0f 85 ad 02 00 00 4c 89 e8 48 c1 e8 03 42 0f
RSP: 0018:ffffc90004197b90 EFLAGS: 00010202
RAX: 1ffffffff15c74b3 RBX: 0000000000000011 RCX: ffff88802f47da00
RDX: 0000000000000000 RSI: ffffffff8ae3a580 RDI: ffff8881432cc000
RBP: dffffc0000000000 R08: ffffffff90b1028f R09: 1ffffffff2162051
R10: dffffc0000000000 R11: fffffbfff2162052 R12: 0000000000000002
R13: 0000000000000014 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e324008 CR3: 000000007dd04000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
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 ec 4f 23 fd       	call   0xfd235004
  18:	4d 8b 3f             	mov    (%r15),%r15
  1b:	49 8d 5f 11          	lea    0x11(%r15),%rbx
  1f:	4d 8d 6f 14          	lea    0x14(%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 ad 02 00 00    	jne    0x2e4
  37:	4c 89 e8             	mov    %r13,%rax
  3a:	48 c1 e8 03          	shr    $0x3,%rax
  3e:	42                   	rex.X
  3f:	0f                   	.byte 0xf

Crashes (30):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/09 12:46 linux-6.1.y e4f7d8be268e 5d63f80b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 23:19 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 23:19 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 23:07 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 23:04 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 22:15 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 21:47 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 21:26 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 21:26 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 21:11 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 21:11 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 20:58 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 20:58 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 20:50 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 20:50 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 20:21 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 20:13 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 20:11 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 19:59 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 19:50 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 19:43 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 19:37 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 19:37 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 19:27 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 19:26 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/17 18:16 linux-6.1.y e4f7d8be268e 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/05 02:12 linux-6.1.y fb28aa725e05 d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/05 00:42 linux-6.1.y fb28aa725e05 d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/04 23:46 linux-6.1.y fb28aa725e05 d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
2026/08/04 23:46 linux-6.1.y fb28aa725e05 d4abbeac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in i915_pci_probe
* Struck through repros no longer work on HEAD.