------------[ cut here ]------------
WARNING: CPU: 1 PID: 23735 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: 23735 Comm: syz-executor.0 Not tainted 5.12.0-rc3-syzkaller #0
Hardware name: ARM-Versatile Express
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 r7:844ca720 r6:82a22498 r5:00000000 r4:844cb390
[<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)
 r9:86f5a000 r8:ddfdb3e0 r7:ddfdb380 r6:82a22498 r5:00000000 r4:844cb390
[<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)
 r10:86f5b978 r9:86f5b9e0 r8:86f5b948 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)
 r10:86f5b978 r9:86f5b9e0 r8:00000001 r7:00000000 r6:828ad498 r5:00000000
 r4:828ad498 r3:00010002
[<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)
 r10:86e20000 r9:86f5a000 r8:e000200c r7:828ad4bc r6:e0002000 r5:86f5b9e0
 r4:82a22c34
[<8088aeec>] (gic_handle_irq) from [<80200abc>] (__irq_svc+0x5c/0x94 arch/arm/kernel/entry-armv.S:205)
Exception stack(0x86f5b9e0 to 0x86f5ba28)
b9e0: 00000001 821137b8 00000001 00000085 ddfe3180 00000000 85430000 82a22928
ba00: 00000001 8181f7ec 86e20000 86f5ba44 86f5b9d8 86f5ba30 8181dacc 81826adc
ba20: 20000013 ffffffff
 r9:86f5a000 r8:00000001 r7:86f5ba14 r6:ffffffff r5:20000013 r4:81826adc
[<81826ab0>] (_raw_spin_unlock_irq) from [<8027f388>] (finish_lock_switch kernel/sched/core.c:4074 [inline])
[<81826ab0>] (_raw_spin_unlock_irq) from [<8027f388>] (finish_task_switch+0xac/0x258 kernel/sched/core.c:4191)
 r5:00000000 r4:ddfe3180
[<8027f2dc>] (finish_task_switch) from [<8181f7ec>] (context_switch kernel/sched/core.c:4325 [inline])
[<8027f2dc>] (finish_task_switch) from [<8181f7ec>] (__schedule+0x3e4/0xcc8 kernel/sched/core.c:5073)
 r10:835f79a0 r9:83618000 r8:00000001 r7:ddfe3190 r6:86e20000 r5:85430000
 r4:ddfe3180
[<8181f408>] (__schedule) from [<8182077c>] (preempt_schedule_irq+0x54/0x88 kernel/sched/core.c:5530)
 r10:00000000 r9:86f5a000 r8:80200ad4 r7:86f5bb3c r6:ffffffff r5:60000013
 r4:86f5a000
[<81820728>] (preempt_schedule_irq) from [<80200afc>] (svc_preempt+0x8/0x18)
Exception stack(0x86f5bb08 to 0x86f5bb50)
bb00:                   834a3c48 00000010 00000000 00000000 000000e2 834a3c40
bb20: 86f5bc34 00000000 86f5bc28 00000001 00000000 86f5bb74 86b5f200 86f5bb58
bb40: 807283f8 8073387c 60000013 ffffffff
 r5:60000013 r4:8073387c
[<80733824>] (tomoyo_domain_quota_is_ok) from [<807283f8>] (tomoyo_supervisor+0xd8/0x5a0 security/tomoyo/common.c:2089)
 r7:00000000 r6:81f97e80 r5:81f97e80 r4:86f5bc34
[<80728320>] (tomoyo_supervisor) from [<8072ccac>] (tomoyo_audit_path_log security/tomoyo/file.c:168 [inline])
[<80728320>] (tomoyo_supervisor) from [<8072ccac>] (tomoyo_path_permission security/tomoyo/file.c:587 [inline])
[<80728320>] (tomoyo_supervisor) from [<8072ccac>] (tomoyo_path_permission+0x98/0xa4 security/tomoyo/file.c:573)
 r3:87019840 r2:821137a0 r1:81f97e80
 r10:00000000 r9:00000001 r8:86f5bc28 r7:81ac85f4 r6:8072ceec r5:81f97e80
 r4:86f5bc34
[<8072cc14>] (tomoyo_path_permission) from [<8072d7a8>] (tomoyo_check_open_permission+0x1c8/0x1e8 security/tomoyo/file.c:777)
 r9:00000004 r8:834a3c40 r7:00000000 r6:00000000 r5:83709288 r4:00000001
[<8072d5e0>] (tomoyo_check_open_permission) from [<80732370>] (tomoyo_file_open security/tomoyo/tomoyo.c:313 [inline])
[<8072d5e0>] (tomoyo_check_open_permission) from [<80732370>] (tomoyo_file_open+0x44/0x48 security/tomoyo/tomoyo.c:308)
 r9:83709288 r8:00000000 r7:86f5be58 r6:82a3c39c r5:83709280 r4:83709280
[<8073232c>] (tomoyo_file_open) from [<806f3134>] (security_file_open+0x34/0x168 security/security.c:1589)
 r5:83709280 r4:82128ca4
[<806f3100>] (security_file_open) from [<804d55f8>] (do_dentry_open+0xe4/0x3e8 fs/open.c:813)
 r5:8408b2f0 r4:83709280
[<804d5514>] (do_dentry_open) from [<804d7564>] (vfs_open+0x34/0x38 fs/open.c:940)
 r9:00000000 r8:83709280 r7:86f5be58 r6:82a3c39c r5:86f5bf20 r4:00000000
[<804d7530>] (vfs_open) from [<804ec9dc>] (do_open fs/namei.c:3365 [inline])
[<804d7530>] (vfs_open) from [<804ec9dc>] (path_openat+0x5b0/0x10f8 fs/namei.c:3498)
[<804ec42c>] (path_openat) from [<804ef4ac>] (do_filp_open+0x7c/0x12c fs/namei.c:3525)
 r10:00000142 r9:86f5a000 r8:80200224 r7:00000001 r6:86f5bf20 r5:86f5be58
 r4:86f5bf58
[<804ef430>] (do_filp_open) from [<804d782c>] (do_sys_openat2+0xa8/0x160 fs/open.c:1187)
 r7:ffffff9c r6:00000003 r5:83610000 r4:86f5bf58
[<804d7784>] (do_sys_openat2) from [<804d7cd0>] (do_sys_open fs/open.c:1203 [inline])
[<804d7784>] (do_sys_openat2) from [<804d7cd0>] (__do_sys_openat fs/open.c:1219 [inline])
[<804d7784>] (do_sys_openat2) from [<804d7cd0>] (sys_openat+0xa4/0xcc fs/open.c:1214)
 r7:00000142 r6:00000000 r5:20000000 r4:ffffff9c
[<804d7c2c>] (sys_openat) from [<80200060>] (ret_fast_syscall+0x0/0x2c arch/arm/mm/proc-v7.S:64)
Exception stack(0x86f5bfa8 to 0x86f5bff0)
bfa0:                   00000000 00000000 ffffff9c 20000000 00000000 00000000
bfc0: 00000000 00000000 00000000 00000142 7e99631a 76f3e6d0 7e9964a4 76f3e20c
bfe0: 76f3e048 76f3e038 00018e9c 0004ba40
 r5:00000000 r4:00000000
Rebooting in 86400 seconds..