------------[ 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+0x410/0x440 drivers/gpu/drm/drm_vblank.c:1331, CPU#0: kworker/0:5/4893
Modules linked in:
CPU: 0 UID: 0 PID: 4893 Comm: kworker/0:5 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
Workqueue: events drm_fb_helper_damage_work
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : drm_crtc_wait_one_vblank+0x410/0x440 drivers/gpu/drm/drm_vblank.c:1331
lr : drm_crtc_wait_one_vblank+0x408/0x440 drivers/gpu/drm/drm_vblank.c:1329
sp : ffff800092c87820
x29: ffff800092c878d0 x28: dfff800000000000 x27: ffff0000c2a98080
x26: ffff800092c87820 x25: dfff800000000000 x24: ffff700012590f04
x23: ffff800086f48260 x22: ffff0000c6c41000 x21: ffff800086fcda40
x20: ffff0000c6fa8000 x19: 0000000000000000 x18: 1fffe00034bb7428
x17: 0000000000000003 x16: ffff800088b27000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000002 x9 : a58bb73eb7f36f00
x8 : a58bb73eb7f36f00 x7 : ffff80008048e8f8 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f8870
x2 : 0000000100000000 x1 : 0000000000000000 x0 : ffff0000c6fa8000
Call trace:
 drm_crtc_wait_one_vblank+0x410/0x440 drivers/gpu/drm/drm_vblank.c:1331 (P)
 drm_client_modeset_wait_for_vblank+0xc4/0xec drivers/gpu/drm/drm_client_modeset.c:1331
 drm_fb_helper_fb_dirty drivers/gpu/drm/drm_fb_helper.c:327 [inline]
 drm_fb_helper_damage_work+0x520/0xbc0 drivers/gpu/drm/drm_fb_helper.c:365
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
irq event stamp: 166982
hardirqs last  enabled at (166981): [<ffff8000868f4e64>] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline]
hardirqs last  enabled at (166981): [<ffff8000868f4e64>] arm64_exit_to_kernel_mode+0x80/0x94 arch/arm64/kernel/entry-common.c:62
hardirqs last disabled at (166982): [<ffff8000868f0d88>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425
softirqs last  enabled at (166976): [<ffff800080310744>] softirq_handle_end kernel/softirq.c:468 [inline]
softirqs last  enabled at (166976): [<ffff800080310744>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650
softirqs last disabled at (166955): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---