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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/0:3/4474
Modules linked in:
CPU: 0 UID: 0 PID: 4474 Comm: kworker/0:3 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 : ffff800096407820
x29: ffff8000964078d0 x28: dfff800000000000 x27: ffff0000c6860880
x26: ffff800096407820 x25: dfff800000000000 x24: ffff700012c80f04
x23: ffff800086eca2a0 x22: ffff0000c63fd000 x21: ffff800086f515e0
x20: ffff0000c6978000 x19: 0000000000000000 x18: 1fffe00035bd4c28
x17: 0000000000000003 x16: ffff800088a77000 x15: ffff800088b27780
x14: 00000000000370d2 x13: 0000000000000001 x12: 0000000000000003
x11: 0000000000000000 x10: 0000000000000002 x9 : 59576df8c141f800
x8 : 59576df8c141f800 x7 : 0000000000000000 x6 : ffff800080483190
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f3e60
x2 : 0000000100000000 x1 : 0000000000000000 x0 : ffff0000c6978000
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: 45788
hardirqs last  enabled at (45787): [<ffff80008688ceb4>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:219 [inline]
hardirqs last  enabled at (45787): [<ffff80008688ceb4>] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:229
hardirqs last disabled at (45788): [<ffff800086876b00>] __schedule+0x2f8/0x2b00 kernel/sched/core.c:7137
softirqs last  enabled at (45784): [<ffff800082b6ac04>] local_bh_enable include/linux/bottom_half.h:33 [inline]
softirqs last  enabled at (45784): [<ffff800082b6ac04>] rcu_read_unlock_bh include/linux/rcupdate.h:923 [inline]
softirqs last  enabled at (45784): [<ffff800082b6ac04>] keep_key_fresh drivers/net/wireguard/send.c:135 [inline]
softirqs last  enabled at (45784): [<ffff800082b6ac04>] wg_packet_create_data_done drivers/net/wireguard/send.c:259 [inline]
softirqs last  enabled at (45784): [<ffff800082b6ac04>] wg_packet_tx_worker+0x518/0x75c drivers/net/wireguard/send.c:276
softirqs last disabled at (45782): [<ffff800082b6a8fc>] local_bh_disable include/linux/bottom_half.h:20 [inline]
softirqs last disabled at (45782): [<ffff800082b6a8fc>] rcu_read_lock_bh include/linux/rcupdate.h:902 [inline]
softirqs last disabled at (45782): [<ffff800082b6a8fc>] keep_key_fresh drivers/net/wireguard/send.c:129 [inline]
softirqs last disabled at (45782): [<ffff800082b6a8fc>] wg_packet_create_data_done drivers/net/wireguard/send.c:259 [inline]
softirqs last disabled at (45782): [<ffff800082b6a8fc>] wg_packet_tx_worker+0x210/0x75c drivers/net/wireguard/send.c:276
---[ end trace 0000000000000000 ]---