------------[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 1ffff00010f39a12 x16: 00000000f1f1f1f1 x15: 00000000f3f3f3f3 x14: 0000000000000000 x13: 0000000000000001 x12: ffff7000144daeb7 x11: 1ffff000144daeb6 x10: ffff7000144daeb6 x9 : dfff800000000000 x8 : ffff8000a26d75b7 x7 : 0000000000000001 x6 : ffff7000144daeb6 x5 : 1ffff00010ef702e x4 : 1fffe00002efa001 x3 : dfff800000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: 0000000000000004 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: ffff7fffe47ee000 x16: ffff80008dce0000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 1ffff00010f39a12 x16: 1fffe00002fcd433 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: 0000000000000004 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 1ffff00010f39a12 x16: 1fffe00002fcd433 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: 0000000000000004 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: 0000000000000004 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 1ffff00010f39a12 x16: 1fffe00002fcd433 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 1ffff00010f39a12 x16: 1fffe00002fcd433 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: ffff000015145b00 x17: 1ffff00010f39a12 x16: 1fffe00002a28b73 x15: 1ffff00010f39a11 x14: 00004c4b40000000 x13: 00004c4b40000000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000004 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 1ffff00010f39a12 x16: 1fffe00002fcd433 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 1ffff00010f39a12 x16: 1fffe00002fcd433 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: ffff7fffe47ee000 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 1ffff00010f39a12 x16: 1fffe00002fcd433 x15: ffff8000877bb6f0 x14: 0000000000000001 x13: 9bc737e938375112 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: 0000000000000004 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ 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+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329, CPU#0: kworker/0:3/3439 Modules linked in: CPU: 0 UID: 0 PID: 3439 Comm: kworker/0:3 Tainted: G W L syzkaller #0 PREEMPT Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) Workqueue: events drm_fb_helper_damage_work pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 lr : drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 sp : ffff8000a26d7900 x29: ffff8000a26d79b0 x28: 0000000000000000 x27: ffff8000a26d7940 x26: ffff0000145e1088 x25: ffff800085f74d40 x24: 0000000000000000 x23: 1ffff000144daf22 x22: ffff00001473a008 x21: 0000000000000000 x20: ffff000014731000 x19: ffff00001473a000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000877bb6f0 x14: 1ffff00010ef76de x13: 0000000000000004 x12: ffff60000d7eccba x11: 1fffe0000d7eccb9 x10: ffff60000d7eccb9 x9 : dfff800000000000 x8 : ffff8000a26d7430 x7 : ffff8000a26d75b0 x6 : ffff8000a26d7550 x5 : ffff8000a26d7490 x4 : 1ffff000144daea0 x3 : 1fffe0000d7ebf3c x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000177d0000 Call trace: drm_crtc_wait_one_vblank+0x2b8/0x464 drivers/gpu/drm/drm_vblank.c:1329 (P) drm_client_modeset_wait_for_vblank+0xb4/0xe0 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+0x144/0x5c0 drivers/gpu/drm/drm_fb_helper.c:275 process_one_work+0x7c0/0x1ab0 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x42c/0xc90 kernel/workqueue.c:3486 kthread+0x2ec/0x384 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:858 irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x16a8/0x5700 kernel/fork.c:2231 softirqs last enabled at (0): [] copy_process+0x16c8/0x5700 kernel/fork.c:2232 softirqs last disabled at (0): [<0000000000000000>] 0x0 ---[ end trace 0000000000000000 ]---