------------[ 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/0:3/1200
Modules linked in:
CPU: 0 UID: 0 PID: 1200 Comm: kworker/0:3 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026
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 : ffff800094997820
x29: ffff8000949978d0 x28: dfff800000000000 x27: ffff0000c4dd0880
x26: ffff800094997820 x25: dfff800000000000 x24: ffff700012932f04
x23: ffff800086f24ce0 x22: ffff0000c68a9000 x21: ffff800086fac020
x20: ffff0000c6306000 x19: 0000000000000000 x18: 1fffe000359ea228
x17: 0000000000000003 x16: ffff8000897f7000 x15: ffff8000898a76c0
x14: 0000000000001f05 x13: 0000000000000001 x12: 0000000000000003
x11: 0000000000000000 x10: 0000000000000002 x9 : f3ea386536efcc00
x8 : f3ea386536efcc00 x7 : ffff800080484084 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f4d68
x2 : 0000000100000000 x1 : 0000000000000000 x0 : ffff0000c6306000
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: 1037094
hardirqs last  enabled at (1037093): [<ffff80008048761c>] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385
hardirqs last disabled at (1037094): [<ffff8000868b91fc>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:483
softirqs last  enabled at (1037052): [<ffff8000804d358c>] local_bh_enable include/linux/bottom_half.h:33 [inline]
softirqs last  enabled at (1037052): [<ffff8000804d358c>] srcu_invoke_callbacks+0x288/0x568 kernel/rcu/srcutree.c:1899
softirqs last disabled at (1037048): [<ffff8000804d3564>] local_bh_disable include/linux/bottom_half.h:20 [inline]
softirqs last disabled at (1037048): [<ffff8000804d3564>] srcu_invoke_callbacks+0x260/0x568 kernel/rcu/srcutree.c:1897
---[ end trace 0000000000000000 ]---
------------[ 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/0:3/1200
Modules linked in:
CPU: 0 UID: 0 PID: 1200 Comm: kworker/0:3 Tainted: G        W    L      syzkaller #0 PREEMPT 
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026
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 : ffff800094997820
x29: ffff8000949978d0 x28: dfff800000000000 x27: ffff0000c4dd0880
x26: ffff800094997820 x25: dfff800000000000 x24: ffff700012932f04
x23: ffff800086f24ce0 x22: ffff0000c68a9000 x21: ffff800086fac020
x20: ffff0000c6306000 x19: 0000000000000000 x18: 1fffe000359ea228
x17: 0000000000000003 x16: ffff8000897f7000 x15: ffff8000898a76c0
x14: 0000000000001f93 x13: 0000000000000001 x12: 0000000000000003
x11: 0000000000000000 x10: 0000000000000002 x9 : f3ea386536efcc00
x8 : f3ea386536efcc00 x7 : ffff800080484084 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f4d68
x2 : 0000000100000000 x1 : 0000000000000000 x0 : ffff0000c6306000
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: 1037144
hardirqs last  enabled at (1037143): [<ffff80008048761c>] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385
hardirqs last disabled at (1037144): [<ffff8000868b91fc>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:483
softirqs last  enabled at (1037102): [<ffff80008030be24>] softirq_handle_end kernel/softirq.c:491 [inline]
softirqs last  enabled at (1037102): [<ffff80008030be24>] handle_softirqs+0xb2c/0xcbc kernel/softirq.c:673
softirqs last disabled at (1037097): [<ffff8000800204f4>] __do_softirq+0x14/0x20 kernel/softirq.c:679
---[ end trace 0000000000000000 ]---