------------[ cut here ]------------ WARNING: CPU: 0 PID: 12431 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x150/0x154 drivers/gpu/drm/vkms/vkms_crtc.c:21 Modules linked in: Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 12431 Comm: kworker/u4:3 Not tainted 5.12.0-rc3-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: events_power_efficient gc_worker Backtrace: [<81802550>] (dump_backtrace) from [<818027c4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:252) r7:00000080 r6:60000193 r5:00000000 r4:82b58344 [<818027ac>] (show_stack) from [<81809e98>] (__dump_stack lib/dump_stack.c:79 [inline]) [<818027ac>] (show_stack) from [<81809e98>] (dump_stack+0xb8/0xe8 lib/dump_stack.c:120) [<81809de0>] (dump_stack) from [<81803358>] (panic+0x130/0x378 kernel/panic.c:231) r7:81f48198 r6:82a390a4 r5:00000000 r4:82c6b0d0 [<81803228>] (panic) from [<802446f4>] (__warn+0xb0/0x164 kernel/panic.c:605) r3:82a2248c r2:00000000 r1:00000000 r0:81f48198 r7:00000015 [<80244644>] (__warn) from [<81803608>] (warn_slowpath_fmt+0x68/0xd4 kernel/panic.c:628) r7:809fa964 r6:00000015 r5:81fcbd70 r4:00000000 [<818035a4>] (warn_slowpath_fmt) from [<809fa964>] (vkms_vblank_simulate+0x150/0x154 drivers/gpu/drm/vkms/vkms_crtc.c:21) r8:00fe4c00 r7:844b2720 r6:82a22498 r5:00000000 r4:844b3390 [<809fa814>] (vkms_vblank_simulate) from [<80307ebc>] (__run_hrtimer kernel/time/hrtimer.c:1537 [inline]) [<809fa814>] (vkms_vblank_simulate) from [<80307ebc>] (__hrtimer_run_queues+0xd4/0x690 kernel/time/hrtimer.c:1601) r9:86e3c000 r8:ddfc53e0 r7:ddfc5380 r6:82a22498 r5:00000000 r4:844b3390 [<80307de8>] (__hrtimer_run_queues) from [<80308da0>] (hrtimer_interrupt+0x14c/0x2e0 kernel/time/hrtimer.c:1663) r10:ddfc54d8 r9:ddfc5498 r8:ddfc5458 r7:ddfc54a0 r6:ddfc54e0 r5:20000193 r4:ddfc5380 [<80308c54>] (hrtimer_interrupt) from [<8114c308>] (timer_handler drivers/clocksource/arm_arch_timer.c:647 [inline]) [<80308c54>] (hrtimer_interrupt) from [<8114c308>] (arch_timer_handler_virt+0x30/0x38 drivers/clocksource/arm_arch_timer.c:658) r10:86e3ddc8 r9:86e3de30 r8:86e3dd98 r7:8348d940 r6:82a22c34 r5:0000001c r4:8348b000 [<8114c2d8>] (arch_timer_handler_virt) from [<802df904>] (handle_percpu_devid_irq+0xa4/0x19c kernel/irq/chip.c:930) [<802df860>] (handle_percpu_devid_irq) from [<802d8730>] (generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]) [<802df860>] (handle_percpu_devid_irq) from [<802d8730>] (generic_handle_irq kernel/irq/irqdesc.c:652 [inline]) [<802df860>] (handle_percpu_devid_irq) from [<802d8730>] (__handle_domain_irq+0xb0/0x120 kernel/irq/irqdesc.c:689) r10:86e3ddc8 r9:86e3de30 r8:00000001 r7:00000000 r6:828ad498 r5:00000000 r4:828ad498 r3:00010000 [<802d8680>] (__handle_domain_irq) from [<8088af70>] (handle_domain_irq include/linux/irqdesc.h:176 [inline]) [<802d8680>] (__handle_domain_irq) from [<8088af70>] (gic_handle_irq+0x84/0xac drivers/irqchip/irq-gic.c:370) r10:82a26608 r9:86e3c000 r8:e000200c r7:828ad4bc r6:e0002000 r5:86e3de30 r4:82a22c34 [<8088aeec>] (gic_handle_irq) from [<80200abc>] (__irq_svc+0x5c/0x94 arch/arm/kernel/entry-armv.S:205) Exception stack(0x86e3de30 to 0x86e3de78) de20: 00000000 821137b8 00000001 20000093 de40: 80269484 00000000 82a265e0 20000013 00000000 00000487 82a26608 86e3dedc de60: 86e3de28 86e3de80 8181dacc 81489f00 20000013 ffffffff r9:86e3c000 r8:00000000 r7:86e3de64 r6:ffffffff r5:20000013 r4:81489f00 [<81489de4>] (gc_worker) from [<80269484>] (process_one_work+0x2d4/0x998 kernel/workqueue.c:2275) r10:00000088 r9:82a22498 r8:82bfd34e r7:83416200 r6:83420000 r5:86d8af00 r4:833d77e0 [<802691b0>] (process_one_work) from [<80269bac>] (worker_thread+0x64/0x54c kernel/workqueue.c:2421) r10:00000088 r9:86e3c000 r8:82a06d00 r7:83420038 r6:86d8af14 r5:83420000 r4:86d8af00 [<80269b48>] (worker_thread) from [<80271d20>] (kthread+0x184/0x1a4 kernel/kthread.c:292) r10:86e8de64 r9:86d8af00 r8:80269b48 r7:00000000 r6:86e3c000 r5:86dbeb40 r4:867a4e00 [<80271b9c>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:158) Exception stack(0x86e3dfb0 to 0x86e3dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80271b9c r4:86dbeb40 Rebooting in 86400 seconds..