------------[ cut here ]------------ faux_driver vkms: [drm] vblank wait timed out on crtc 0 WARNING: drivers/gpu/drm/drm_vblank.c:1320 at drm_wait_one_vblank+0x570/0x5b0 drivers/gpu/drm/drm_vblank.c:1320, CPU#1: kworker/1:4/5867 Modules linked in: CPU: 1 UID: 0 PID: 5867 Comm: kworker/1:4 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: events drm_fb_helper_damage_work RIP: 0010:drm_wait_one_vblank+0x570/0x5b0 drivers/gpu/drm/drm_vblank.c:1320 Code: ff df 80 3c 08 00 74 08 4c 89 e7 e8 0a 84 e5 fc 4d 8b 2c 24 48 c7 c7 20 47 f4 8b 4c 89 fe 4c 89 ea 44 89 f1 e8 51 9d 42 fc 90 <0f> 0b 90 90 49 bd 00 00 00 00 00 fc ff df e9 a7 fc ff ff 44 89 f9 RSP: 0018:ffffc90004827840 EFLAGS: 00010246 RAX: 60057c8f20646300 RBX: 1ffff110281f8401 RCX: ffff888044179e40 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffffc90004827928 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1c3a6d0 R12: ffff8880256d1000 R13: ffffffff8c06f1a0 R14: 0000000000000000 R15: ffffffff8c089a60 FS: 0000000000000000(0000) GS:ffff8881259a3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb6efe8cf50 CR3: 000000000e138000 CR4: 00000000003526f0 Call Trace: 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:372 [inline] drm_fb_helper_damage_work+0xce/0x6c0 drivers/gpu/drm/drm_fb_helper.c:407 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245