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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/0:6/5047
Modules linked in:
CPU: 0 UID: 0 PID: 5047 Comm: kworker/0:6 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 : ffff800099677820
x29: ffff8000996778d0 x28: dfff800000000000 x27: ffff0000c6ec7880
x26: ffff800099677820 x25: dfff800000000000 x24: ffff7000132cef04
x23: ffff800086fc6340 x22: ffff0000c7203000 x21: ffff8000870500e0
x20: ffff0000c71f0000 x19: 0000000000000000 x18: 1fffe000359cf228
x17: 0000000000000003 x16: ffff8000898b7000 x15: 0000000000000000
x14: 0000000000000e52 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: ffff7000113535ee x9 : ecb99bd171999f00
x8 : ecb99bd171999f00 x7 : ffff8000804a0a1c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80008030ccc8
x2 : 0000000100000000 x1 : 0000000000000000 x0 : ffff0000c71f0000
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/clients/drm_fbdev_helper.c:298 [inline]
 drm_fb_helper_damage_work+0x520/0xbc0 drivers/gpu/drm/clients/drm_fbdev_helper.c:336
 process_one_work kernel/workqueue.c:3495 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3578
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3659
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854
irq event stamp: 9036
hardirqs last  enabled at (9035): [<ffff8000804a3fb4>] vprintk_store+0x924/0xb94 kernel/printk/printk.c:2385
hardirqs last disabled at (9036): [<ffff800086953878>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:484
softirqs last  enabled at (8930): [<ffff8000804f1234>] local_bh_enable include/linux/bottom_half.h:33 [inline]
softirqs last  enabled at (8930): [<ffff8000804f1234>] srcu_invoke_callbacks+0x288/0x568 kernel/rcu/srcutree.c:2274
softirqs last disabled at (8926): [<ffff8000804f120c>] local_bh_disable include/linux/bottom_half.h:20 [inline]
softirqs last disabled at (8926): [<ffff8000804f120c>] srcu_invoke_callbacks+0x260/0x568 kernel/rcu/srcutree.c:2272
---[ end trace 0000000000000000 ]---