------------[ cut here ]------------
faux_driver vkms: [drm] vblank wait timed out on crtc 0
WARNING: drivers/gpu/drm/drm_vblank.c:1318 at drm_wait_one_vblank+0x3b5/0x5d0 drivers/gpu/drm/drm_vblank.c:1318, CPU#0: kworker/0:11/7640
Modules linked in:
CPU: 0 UID: 0 PID: 7640 Comm: kworker/0:11 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Workqueue: events drm_fb_helper_damage_work
RIP: 0010:drm_wait_one_vblank+0x5a2/0x5d0 drivers/gpu/drm/drm_vblank.c:1318
Code: 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ef e8 6f 93 e9 fc 4d 8b 7d 00 48 89 df 4c 89 e6 4c 89 fa 8b 4c 24 04 <67> 48 0f b9 3a e9 e3 fc ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f
RSP: 0000:ffffc9001cc1f860 EFLAGS: 00010246
RAX: 1ffff11028371800 RBX: ffffffff8f321830 RCX: 0000000000000000
RDX: ffffffff8b7eace0 RSI: ffffffff8b806a40 RDI: ffffffff8f321830
RBP: ffffc9001cc1f948 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1e4f46f R12: ffffffff8b806a40
R13: ffff888141b8c000 R14: 1ffff92003983f10 R15: ffffffff8b7eace0
FS:  0000000000000000(0000) GS:ffff8881267fc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000c54030 CR3: 0000000027026000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 drm_client_modeset_wait_for_vblank+0xc5/0xf0 drivers/gpu/drm/drm_client_modeset.c:1330
 drm_fb_helper_fb_dirty drivers/gpu/drm/drm_fb_helper.c:334 [inline]
 drm_fb_helper_damage_work+0x131/0x6f0 drivers/gpu/drm/drm_fb_helper.c:372
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xaec/0x17a0 kernel/workqueue.c:3340
 worker_thread+0x89f/0xd90 kernel/workqueue.c:3421
 kthread+0x726/0x8b0 kernel/kthread.c:463
 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
----------------
Code disassembly (best guess):
   0:	03 48 b9             	add    -0x47(%rax),%ecx
   3:	00 00                	add    %al,(%rax)
   5:	00 00                	add    %al,(%rax)
   7:	00 fc                	add    %bh,%ah
   9:	ff                   	lcall  (bad)
   a:	df 80 3c 08 00 74    	filds  0x7400083c(%rax)
  10:	08 4c 89 ef          	or     %cl,-0x11(%rcx,%rcx,4)
  14:	e8 6f 93 e9 fc       	call   0xfce99388
  19:	4d 8b 7d 00          	mov    0x0(%r13),%r15
  1d:	48 89 df             	mov    %rbx,%rdi
  20:	4c 89 e6             	mov    %r12,%rsi
  23:	4c 89 fa             	mov    %r15,%rdx
  26:	8b 4c 24 04          	mov    0x4(%rsp),%ecx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 e3 fc ff ff       	jmp    0xfffffd17
  34:	44 89 f9             	mov    %r15d,%ecx
  37:	80 e1 07             	and    $0x7,%cl
  3a:	80 c1 03             	add    $0x3,%cl
  3d:	38 c1                	cmp    %al,%cl
  3f:	0f                   	.byte 0xf