------------[ 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/0:2/1095 Modules linked in: CPU: 0 UID: 0 PID: 1095 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 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 : ffff800094697920 x29: ffff8000946979d0 x28: dfff800000000000 x27: ffff0000c61d8880 x26: ffff800094697920 x25: dfff800000000000 x24: ffff7000128d2f24 x23: ffff800086f18440 x22: ffff0000c6bfb000 x21: ffff800086f9dc20 x20: ffff0000c6c04000 x19: 0000000000000000 x18: 1fffe00035bce428 x17: 0000000000000003 x16: ffff800088ac7000 x15: ffff800088b7cfa0 x14: ffff0001ade7214c x13: 0000000000000001 x12: 0000000000000000 x11: ffff80008a54ee28 x10: 0000000000000003 x9 : c78ccb3f60734500 x8 : c78ccb3f60734500 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080156f90 x2 : 0000000000000006 x1 : 0000000000000000 x0 : ffff0000c6c04000 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:237 [inline] drm_fb_helper_damage_work+0x100/0x5e4 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 irq event stamp: 10538 hardirqs last enabled at (10537): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1673 [inline] hardirqs last enabled at (10537): [] finish_lock_switch kernel/sched/core.c:5241 [inline] hardirqs last enabled at (10537): [] finish_task_switch+0x234/0x858 kernel/sched/core.c:5359 hardirqs last disabled at (10538): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425 softirqs last enabled at (10406): [] local_bh_enable include/linux/bottom_half.h:33 [inline] softirqs last enabled at (10406): [] update_defense_level+0x608/0x9c4 net/netfilter/ipvs/ip_vs_ctl.c:210 softirqs last disabled at (10404): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (10404): [] update_defense_level+0xe4/0x9c4 net/netfilter/ipvs/ip_vs_ctl.c:112 ---[ 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/0:2/1095 Modules linked in: CPU: 0 UID: 0 PID: 1095 Comm: kworker/0:2 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 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 : ffff800094697920 x29: ffff8000946979d0 x28: dfff800000000000 x27: ffff0000c61d8880 x26: ffff800094697920 x25: dfff800000000000 x24: ffff7000128d2f24 x23: ffff800086f18440 x22: ffff0000c6bfb000 x21: ffff800086f9dc20 x20: ffff0000c6c04000 x19: 0000000000000000 x18: 1fffe00035bce428 x17: 0000000000000003 x16: ffff800088ac7000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000 x11: ffff80008a54ee28 x10: 0000000000000003 x9 : c78ccb3f60734500 x8 : c78ccb3f60734500 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080156f90 x2 : 0000000000000006 x1 : 0000000000000000 x0 : ffff0000c6c04000 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:237 [inline] drm_fb_helper_damage_work+0x100/0x5e4 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 irq event stamp: 10632 hardirqs last enabled at (10631): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1673 [inline] hardirqs last enabled at (10631): [] finish_lock_switch kernel/sched/core.c:5241 [inline] hardirqs last enabled at (10631): [] finish_task_switch+0x234/0x858 kernel/sched/core.c:5359 hardirqs last disabled at (10632): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425 softirqs last enabled at (10580): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (10580): [] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650 softirqs last disabled at (10541): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ 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/0:2/1095 Modules linked in: CPU: 0 UID: 0 PID: 1095 Comm: kworker/0:2 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 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 : ffff800094697920 x29: ffff8000946979d0 x28: dfff800000000000 x27: ffff0000c61d8880 x26: ffff800094697920 x25: dfff800000000000 x24: ffff7000128d2f24 x23: ffff800086f18440 x22: ffff0000c6bfb000 x21: ffff800086f9dc20 x20: ffff0000c6c04000 x19: 0000000000000000 x18: 1fffe00035bce428 x17: 0000000000000003 x16: ffff800088ac7000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000 x11: ffff80008a54ee28 x10: 0000000000000003 x9 : c78ccb3f60734500 x8 : c78ccb3f60734500 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080156f90 x2 : 0000000000000006 x1 : 0000000000000000 x0 : ffff0000c6c04000 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:237 [inline] drm_fb_helper_damage_work+0x100/0x5e4 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 irq event stamp: 10716 hardirqs last enabled at (10715): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1673 [inline] hardirqs last enabled at (10715): [] finish_lock_switch kernel/sched/core.c:5241 [inline] hardirqs last enabled at (10715): [] finish_task_switch+0x234/0x858 kernel/sched/core.c:5359 hardirqs last disabled at (10716): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425 softirqs last enabled at (10664): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (10664): [] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650 softirqs last disabled at (10635): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ 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/0:2/1095 Modules linked in: CPU: 0 UID: 0 PID: 1095 Comm: kworker/0:2 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 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 : ffff800094697920 x29: ffff8000946979d0 x28: dfff800000000000 x27: ffff0000c61d8880 x26: ffff800094697920 x25: dfff800000000000 x24: ffff7000128d2f24 x23: ffff800086f18440 x22: ffff0000c6bfb000 x21: ffff800086f9dc20 x20: ffff0000c6c04000 x19: 0000000000000000 x18: 1fffe00035bce428 x17: 0000000000000003 x16: ffff800088ac7000 x15: ffff800088b7cfa0 x14: ffff0001ade7214c x13: 0000000000000001 x12: 0000000000000000 x11: ffff80008a54ee28 x10: 0000000000000003 x9 : c78ccb3f60734500 x8 : c78ccb3f60734500 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000008 x3 : ffff800080156f90 x2 : 0000000000000006 x1 : 0000000000000000 x0 : ffff0000c6c04000 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:237 [inline] drm_fb_helper_damage_work+0x100/0x5e4 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 irq event stamp: 10820 hardirqs last enabled at (10819): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1673 [inline] hardirqs last enabled at (10819): [] finish_lock_switch kernel/sched/core.c:5241 [inline] hardirqs last enabled at (10819): [] finish_task_switch+0x234/0x858 kernel/sched/core.c:5359 hardirqs last disabled at (10820): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425 softirqs last enabled at (10768): [] softirq_handle_end kernel/softirq.c:468 [inline] softirqs last enabled at (10768): [] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650 softirqs last disabled at (10719): [] __do_softirq+0x14/0x20 kernel/softirq.c:656 ---[ end trace 0000000000000000 ]---