------------[ cut here ]------------
WARNING: CPU: 1 PID: 21184 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: 1 PID: 21184 Comm: kworker/u4:1 Not tainted 5.12.0-rc3-syzkaller #0
Hardware name: ARM-Versatile Express
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
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 r7:840b6720 r6:82a22498 r5:00000000 r4:840b7390
[<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)
 r9:86e42000 r8:ddfdb3e0 r7:ddfdb380 r6:82a22498 r5:00000000 r4:840b7390
[<80307de8>] (__hrtimer_run_queues) from [<80308da0>] (hrtimer_interrupt+0x14c/0x2e0 kernel/time/hrtimer.c:1663)
 r10:ddfdb4d8 r9:ddfdb498 r8:ddfdb458 r7:ddfdb4a0 r6:ddfdb4e0 r5:20000193
 r4:ddfdb380
[<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)
 r10:86e43db8 r9:86e43e20 r8:86e43d88 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)
 r10:86e43db8 r9:86e43e20 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)
 r10:00000a98 r9:86e42000 r8:e000200c r7:828ad4bc r6:e0002000 r5:86e43e20
 r4:82a22c34
[<8088aeec>] (gic_handle_irq) from [<80200abc>] (__irq_svc+0x5c/0x94 arch/arm/kernel/entry-armv.S:205)
Exception stack(0x86e43e20 to 0x86e43e68)
3e20: 8200e89c 0000004e 00000000 00000a98 00000000 8200e89c 0000004e 00000000
3e40: 80bd0070 833beef8 00000a98 86e43e94 86e43e98 86e43e70 8027e7a8 8181ce80
3e60: a0000113 ffffffff
 r9:86e42000 r8:80bd0070 r7:86e43e54 r6:ffffffff r5:a0000113 r4:8181ce80
[<8027e788>] (___might_sleep) from [<80bd0254>] (wg_ratelimiter_gc_entries+0x1a4/0x2ec drivers/net/wireguard/ratelimiter.c:78)
 r7:00000000 r6:3b9aca00 r5:0000081d r4:93fe7280
[<80bd00b0>] (wg_ratelimiter_gc_entries) from [<80269484>] (process_one_work+0x2d4/0x998 kernel/workqueue.c:2275)
 r10:00000088 r9:82a22498 r8:82bfd34e r7:83416200 r6:83420000 r5:859ea480
 r4:82b853c8
[<802691b0>] (process_one_work) from [<80269bac>] (worker_thread+0x64/0x54c kernel/workqueue.c:2421)
 r10:00000088 r9:86e42000 r8:82a06d00 r7:83420038 r6:859ea494 r5:83420000
 r4:859ea480
[<80269b48>] (worker_thread) from [<80271d20>] (kthread+0x184/0x1a4 kernel/kthread.c:292)
 r10:86dc3e64 r9:859ea480 r8:80269b48 r7:00000000 r6:86e42000 r5:86c312c0
 r4:85bc4a00
[<80271b9c>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:158)
Exception stack(0x86e43fb0 to 0x86e43ff8)
3fa0:                                     00000000 00000000 00000000 00000000
3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:80271b9c
 r4:86c312c0
Rebooting in 86400 seconds..