------------[ cut here ]------------
faux_driver vkms: [drm] vblank wait timed out on crtc 0
WARNING: drivers/gpu/drm/drm_vblank.c:1320 at drm_crtc_wait_one_vblank+0x1b4/0x238 drivers/gpu/drm/drm_vblank.c:1320, CPU#1: kworker/1:1/38
Modules linked in:
CPU: 1 UID: 0 PID: 38 Comm: kworker/1:1 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: linux,dummy-virt (DT)
Workqueue: events drm_fb_helper_damage_work
pstate: 61402009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
pc : drm_crtc_wait_one_vblank+0x1b4/0x238 drivers/gpu/drm/drm_vblank.c:1320
lr : drm_crtc_wait_one_vblank+0x1b4/0x238 drivers/gpu/drm/drm_vblank.c:1320
sp : ffff80008333bcc0
x29: ffff80008333bcf0 x28: 0000000000000000 x27: 0000000000000000
x26: 0000000000000000 x25: ffff80008333bcc0 x24: f9f00000051fe488
x23: 0000000000000000 x22: 00000000000150eb x21: 0000000000000000
x20: 0000000000000000 x19: f3f00000049f4800 x18: 00000000ffffffff
x17: faf00000034c98c0 x16: 00000000000003af x15: ffff800082e9b766
x14: 00000000ffffffea x13: ffff80008333b918 x12: 00000000000affa8
x11: ffff800082bcc4f8 x10: 000000000002ffe8 x9 : ffff800082c7c4f8
x8 : ffff800082cac4e0 x7 : 0000000000000002 x6 : ffffffffffffffff
x5 : 00000000000010da x4 : 0000000000000002 x3 : 0000000000000001
x2 : 0000000000000000 x1 : 0000000000000000 x0 : f0f00000040990c0
Call trace:
 drm_crtc_wait_one_vblank+0x1b4/0x238 drivers/gpu/drm/drm_vblank.c:1320 (P)
 drm_client_modeset_wait_for_vblank+0x70/0x84 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+0x88/0x1c8 drivers/gpu/drm/drm_fb_helper.c:275
 process_one_work+0x180/0x2d0 kernel/workqueue.c:3314
 process_scheduled_works kernel/workqueue.c:3397 [inline]
 worker_thread+0x18c/0x300 kernel/workqueue.c:3478
 kthread+0x118/0x130 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858
---[ end trace 0000000000000000 ]---