------------[ 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#1: kworker/1:0/24
Modules linked in:
CPU: 1 UID: 0 PID: 24 Comm: kworker/1:0 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
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 : ffff80008ee37840
x29: ffff80008ee378f0 x28: dfff800000000000 x27: ffff0000c72fb880
x26: ffff80008ee37840 x25: dfff800000000000 x24: ffff700011dc6f08
x23: ffff800086fe98c0 x22: ffff0000c71ab000 x21: ffff800087070bc0
x20: ffff0000c72be000 x19: 0000000000000000 x18: 1fffe00035ba3828
x17: 0000000000000003 x16: ffff800088bf7000 x15: ffff800088ca7ee0
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000003
x11: 0000000000000000 x10: 0000000000000002 x9 : 0dfc8dab4da89f00
x8 : 0dfc8dab4da89f00 x7 : ffff80008048e314 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f9194
x2 : 0000000100000000 x1 : 0000000000000000 x0 : ffff0000c72be000
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:3387 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
irq event stamp: 305580
hardirqs last  enabled at (305579): [<ffff8000869882e4>] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline]
hardirqs last  enabled at (305579): [<ffff8000869882e4>] __arm64_exit_to_kernel_mode+0x64/0x78 arch/arm64/kernel/entry-common.c:60
hardirqs last disabled at (305580): [<ffff8000869841d4>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:445
softirqs last  enabled at (305534): [<ffff800080311114>] softirq_handle_end kernel/softirq.c:491 [inline]
softirqs last  enabled at (305534): [<ffff800080311114>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:673
softirqs last disabled at (305499): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:679
---[ 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#1: kworker/1:0/24
Modules linked in:
CPU: 1 UID: 0 PID: 24 Comm: kworker/1:0 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
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 : ffff80008ee37840
x29: ffff80008ee378f0 x28: dfff800000000000 x27: ffff0000c72fb880
x26: ffff80008ee37840 x25: dfff800000000000 x24: ffff700011dc6f08
x23: ffff800086fe98c0 x22: ffff0000c71ab000 x21: ffff800087070bc0
x20: ffff0000c72be000 x19: 0000000000000000 x18: 1fffe00035ba3828
x17: 0000000000000003 x16: ffff800088bf7000 x15: ffff800088ca7ee0
x14: ffff0001add1c14c x13: 0000000000000001 x12: 0000000000000003
x11: ffff80008a6a6e28 x10: 0000000000000003 x9 : 0dfc8dab4da89f00
x8 : 0dfc8dab4da89f00 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff8000801561b4
x2 : 0000000000000006 x1 : 0000000000000000 x0 : ffff0000c72be000
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:3387 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
irq event stamp: 306108
hardirqs last  enabled at (306107): [<ffff8000803b9834>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1698 [inline]
hardirqs last  enabled at (306107): [<ffff8000803b9834>] finish_lock_switch kernel/sched/core.c:5251 [inline]
hardirqs last  enabled at (306107): [<ffff8000803b9834>] finish_task_switch+0x234/0x858 kernel/sched/core.c:5369
hardirqs last disabled at (306108): [<ffff8000869841d4>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:445
softirqs last  enabled at (306056): [<ffff800080311114>] softirq_handle_end kernel/softirq.c:491 [inline]
softirqs last  enabled at (306056): [<ffff800080311114>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:673
softirqs last disabled at (305583): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:679
---[ 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#1: kworker/1:0/24
Modules linked in:
CPU: 1 UID: 0 PID: 24 Comm: kworker/1:0 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
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 : ffff80008ee37840
x29: ffff80008ee378f0 x28: dfff800000000000 x27: ffff0000c72fb880
x26: ffff80008ee37840 x25: dfff800000000000 x24: ffff700011dc6f08
x23: ffff800086fe98c0 x22: ffff0000c71ab000 x21: ffff800087070bc0
x20: ffff0000c72be000 x19: 0000000000000000 x18: 1fffe00035ba3828
x17: 0000000000000003 x16: ffff800088bf7000 x15: ffff800088ca7ee0
x14: ffff0001add1c14c x13: 0000000000000001 x12: 0000000000000003
x11: ffff80008a6a6e28 x10: 0000000000000003 x9 : 0dfc8dab4da89f00
x8 : 0dfc8dab4da89f00 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff8000801561b4
x2 : 0000000000000006 x1 : 0000000000000000 x0 : ffff0000c72be000
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:3387 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
irq event stamp: 306668
hardirqs last  enabled at (306667): [<ffff8000803b9834>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1698 [inline]
hardirqs last  enabled at (306667): [<ffff8000803b9834>] finish_lock_switch kernel/sched/core.c:5251 [inline]
hardirqs last  enabled at (306667): [<ffff8000803b9834>] finish_task_switch+0x234/0x858 kernel/sched/core.c:5369
hardirqs last disabled at (306668): [<ffff8000869841d4>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:445
softirqs last  enabled at (306616): [<ffff800080311114>] softirq_handle_end kernel/softirq.c:491 [inline]
softirqs last  enabled at (306616): [<ffff800080311114>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:673
softirqs last disabled at (306111): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:679
---[ 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#1: kworker/1:0/24
Modules linked in:
CPU: 1 UID: 0 PID: 24 Comm: kworker/1:0 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
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 : ffff80008ee37840
x29: ffff80008ee378f0 x28: dfff800000000000 x27: ffff0000c72fb880
x26: ffff80008ee37840 x25: dfff800000000000 x24: ffff700011dc6f08
x23: ffff800086fe98c0 x22: ffff0000c71ab000 x21: ffff800087070bc0
x20: ffff0000c72be000 x19: 0000000000000000 x18: 1fffe00035ba3828
x17: 0000000000000003 x16: ffff800088bf7000 x15: ffff800088ca7ee0
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000003
x11: 0000000000000000 x10: 0000000000000002 x9 : 0dfc8dab4da89f00
x8 : 0dfc8dab4da89f00 x7 : ffff80008048e314 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f9194
x2 : 0000000100000000 x1 : 0000000000000000 x0 : ffff0000c72be000
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:3387 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
irq event stamp: 307224
hardirqs last  enabled at (307223): [<ffff8000869882e4>] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline]
hardirqs last  enabled at (307223): [<ffff8000869882e4>] __arm64_exit_to_kernel_mode+0x64/0x78 arch/arm64/kernel/entry-common.c:60
hardirqs last disabled at (307224): [<ffff8000869841d4>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:445
softirqs last  enabled at (307170): [<ffff800080311114>] softirq_handle_end kernel/softirq.c:491 [inline]
softirqs last  enabled at (307170): [<ffff800080311114>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:673
softirqs last disabled at (306671): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:679
---[ 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#1: kworker/1:0/24
Modules linked in:
CPU: 1 UID: 0 PID: 24 Comm: kworker/1:0 Tainted: G        W           syzkaller #0 PREEMPT 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
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 : ffff80008ee37840
x29: ffff80008ee378f0 x28: dfff800000000000 x27: ffff0000c72fb880
x26: ffff80008ee37840 x25: dfff800000000000 x24: ffff700011dc6f08
x23: ffff800086fe98c0 x22: ffff0000c71ab000 x21: ffff800087070bc0
x20: ffff0000c72be000 x19: 0000000000000000 x18: 1fffe00035ba3828
x17: 0000000000000003 x16: ffff800088bf7000 x15: ffff800088ca7ee0
x14: ffff0001add1c14c x13: 0000000000000001 x12: 0000000000000003
x11: ffff80008a6a6e28 x10: 0000000000000003 x9 : 0dfc8dab4da89f00
x8 : 0dfc8dab4da89f00 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff8000801561b4
x2 : 0000000000000006 x1 : 0000000000000000 x0 : ffff0000c72be000
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:3387 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
irq event stamp: 307344
hardirqs last  enabled at (307343): [<ffff8000803b9834>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1698 [inline]
hardirqs last  enabled at (307343): [<ffff8000803b9834>] finish_lock_switch kernel/sched/core.c:5251 [inline]
hardirqs last  enabled at (307343): [<ffff8000803b9834>] finish_task_switch+0x234/0x858 kernel/sched/core.c:5369
hardirqs last disabled at (307344): [<ffff8000869841d4>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:445
softirqs last  enabled at (307292): [<ffff800080311114>] softirq_handle_end kernel/softirq.c:491 [inline]
softirqs last  enabled at (307292): [<ffff800080311114>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:673
softirqs last disabled at (307227): [<ffff8000800204c0>] __do_softirq+0x14/0x20 kernel/softirq.c:679
---[ end trace 0000000000000000 ]---