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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/0:5/4840
Modules linked in:
CPU: 0 UID: 0 PID: 4840 Comm: kworker/0:5 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
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 : ffff8000961f7820
x29: ffff8000961f78d0 x28: dfff800000000000 x27: ffff0000c6db0080
x26: ffff8000961f7820 x25: dfff800000000000 x24: ffff700012c3ef04
x23: ffff800086f24ce0 x22: ffff0000c6e38000 x21: ffff800086fac020
x20: ffff0000c6ecc000 x19: 0000000000000000 x18: 00000000fcb05338
x17: ffff8001237ae000 x16: ffff80008f850000 x15: 00989680001e0000
x14: 00000000000017ae x13: 0000000000000001 x12: 0000000000000003
x11: 0000000000000000 x10: 0000000000000002 x9 : 464860e9bfb87000
x8 : 464860e9bfb87000 x7 : 756372735f656c6f x6 : 5f656c6f736e6f63
x5 : ffff0000cb837b80 x4 : 0000000000000000 x3 : ffff8000802f4d68
x2 : 0000000100000000 x1 : 0000000000000000 x0 : ffff0000c6ecc000
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:3396 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854
irq event stamp: 106160
hardirqs last  enabled at (106159): [<ffff80008048761c>] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385
hardirqs last disabled at (106160): [<ffff8000868b91fc>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:483
softirqs last  enabled at (105698): [<ffff8000804d358c>] local_bh_enable include/linux/bottom_half.h:33 [inline]
softirqs last  enabled at (105698): [<ffff8000804d358c>] srcu_invoke_callbacks+0x288/0x568 kernel/rcu/srcutree.c:1899
softirqs last disabled at (105694): [<ffff8000804d3564>] local_bh_disable include/linux/bottom_half.h:20 [inline]
softirqs last disabled at (105694): [<ffff8000804d3564>] srcu_invoke_callbacks+0x260/0x568 kernel/rcu/srcutree.c:1897
---[ end trace 0000000000000000 ]---