------------[ cut here ]------------
faux_driver vkms: [drm] vblank wait timed out on crtc 0
WARNING: drivers/gpu/drm/drm_vblank.c:1329 at drm_crtc_wait_one_vblank+0x3bc/0x560 drivers/gpu/drm/drm_vblank.c:1329, CPU#1: kworker/1:1/75
Modules linked in:
CPU: 1 UID: 0 PID: 75 Comm: kworker/1:1 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: events drm_fb_helper_damage_work
RIP: 0010:drm_crtc_wait_one_vblank+0x51a/0x560 drivers/gpu/drm/drm_vblank.c:1329
Code: c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ef e8 85 1d c2 fc 4d 8b 7d 00 4c 89 f7 4c 89 e6 4c 89 fa 89 d9 <67> 48 0f b9 3a 48 8b 3c 24 89 de e8 c6 f5 ff ff b8 92 ff ff ff 49
RSP: 0018:ffffc9000205f8e0 EFLAGS: 00010246
RAX: 1ffff11004b77000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffffff8c52ab00 RSI: ffffffff8c547a60 RDI: ffffffff903e8d30
RBP: ffffc9000205f9c8 R08: ffffffff9032adf7 R09: 1ffffffff20655be
R10: dffffc0000000000 R11: fffffbfff20655bf R12: ffffffff8c547a60
R13: ffff888025bb8000 R14: ffffffff903e8d30 R15: ffffffff8c52ab00
FS:  0000000000000000(0000) GS:ffff88812532d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c40abde CR3: 000000003207c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 drm_client_modeset_wait_for_vblank+0xc5/0xf0 drivers/gpu/drm/drm_client_modeset.c:1331
 drm_fb_helper_fb_dirty drivers/gpu/drm/drm_fb_helper.c:237 [inline]
 drm_fb_helper_damage_work+0x129/0x740 drivers/gpu/drm/drm_fb_helper.c:275
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 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>
----------------
Code disassembly (best guess):
   0:	c1 e8 03             	shr    $0x3,%eax
   3:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
   a:	fc ff df
   d:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1)
  11:	74 08                	je     0x1b
  13:	4c 89 ef             	mov    %r13,%rdi
  16:	e8 85 1d c2 fc       	call   0xfcc21da0
  1b:	4d 8b 7d 00          	mov    0x0(%r13),%r15
  1f:	4c 89 f7             	mov    %r14,%rdi
  22:	4c 89 e6             	mov    %r12,%rsi
  25:	4c 89 fa             	mov    %r15,%rdx
  28:	89 d9                	mov    %ebx,%ecx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	48 8b 3c 24          	mov    (%rsp),%rdi
  33:	89 de                	mov    %ebx,%esi
  35:	e8 c6 f5 ff ff       	call   0xfffff600
  3a:	b8 92 ff ff ff       	mov    $0xffffff92,%eax
  3f:	49                   	rex.WB