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WARNING: CPU: 0 PID: 8903 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: 8903 Comm: syz-executor.1 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 r1:5b71e000 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 r7:840f8720 r6:82a22498 r5:00000000 r4:840f9390
[<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)
 r9:86c22000 r8:ddfc53e0 r7:ddfc5380 r6:82a22498 r5:00000000 r4:840f9390
[<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)
 r10:86c23c10 r9:86c23c78 r8:86c23be0 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)
 r10:86c23c10 r9:86c23c78 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)
 r10:00000000 r9:86c22000 r8:e000200c r7:828ad4bc r6:e0002000 r5:86c23c78
 r4:82a22c34
[<8088aeec>] (gic_handle_irq) from [<80200abc>] (__irq_svc+0x5c/0x94 arch/arm/kernel/entry-armv.S:205)
Exception stack(0x86c23c78 to 0x86c23cc0)
3c60:                                                       00000000 821137b8
3c80: 00000001 20000093 82b58344 00000000 20000013 00000000 8341c000 82a22980
3ca0: 00000000 86c23ce4 86c23c70 86c23cc8 8181dacc 81809ec4 20000013 ffffffff
 r9:86c22000 r8:8341c000 r7:86c23cac r6:ffffffff r5:20000013 r4:81809ec4
[<81809de0>] (dump_stack) from [<80857268>] (fail_dump lib/fault-inject.c:52 [inline])
[<81809de0>] (dump_stack) from [<80857268>] (should_fail+0x194/0x1f4 lib/fault-inject.c:146)
 r7:00001000 r6:00000c40 r5:00000c40 r4:82b25240
[<808570d4>] (should_fail) from [<804b8404>] (__should_failslab+0x64/0x78 mm/failslab.c:33)
 r5:00000c40 r4:834016c0
[<804b83a0>] (__should_failslab) from [<8045b90c>] (should_failslab+0x10/0x20 mm/slab_common.c:1273)
[<8045b8fc>] (should_failslab) from [<804b4bc4>] (slab_pre_alloc_hook mm/slab.h:499 [inline])
[<8045b8fc>] (should_failslab) from [<804b4bc4>] (slab_alloc_node mm/slub.c:2826 [inline])
[<8045b8fc>] (should_failslab) from [<804b4bc4>] (slab_alloc mm/slub.c:2915 [inline])
[<8045b8fc>] (should_failslab) from [<804b4bc4>] (__kmalloc+0x78/0x35c mm/slub.c:4051)
[<804b4b4c>] (__kmalloc) from [<8073147c>] (kmalloc include/linux/slab.h:559 [inline])
[<804b4b4c>] (__kmalloc) from [<8073147c>] (tomoyo_realpath_from_path+0x48/0x1a0 security/tomoyo/realpath.c:254)
 r10:00000000 r9:fffff000 r8:8341c000 r7:866ea288 r6:00001000 r5:00000000
 r4:83dc20c0
[<80731434>] (tomoyo_realpath_from_path) from [<8072d450>] (tomoyo_get_realpath security/tomoyo/file.c:151 [inline])
[<80731434>] (tomoyo_realpath_from_path) from [<8072d450>] (tomoyo_path_number_perm+0xb8/0x248 security/tomoyo/file.c:723)
 r10:00000000 r9:00000004 r8:866ea280 r7:00005609 r6:00000004 r5:81ac8740
 r4:866ea288 r3:00000000
[<8072d398>] (tomoyo_path_number_perm) from [<80731e48>] (tomoyo_file_ioctl+0x1c/0x20 security/tomoyo/tomoyo.c:329)
 r10:00000036 r9:00000004 r8:866ea280 r7:00005609 r6:866ea280 r5:20000000
 r4:82128d6c
[<80731e2c>] (tomoyo_file_ioctl) from [<806efce8>] (security_file_ioctl+0x40/0x5c security/security.c:1495)
[<806efca8>] (security_file_ioctl) from [<804f3324>] (__do_sys_ioctl fs/ioctl.c:747 [inline])
[<806efca8>] (security_file_ioctl) from [<804f3324>] (sys_ioctl+0x50/0xaa4 fs/ioctl.c:739)
 r7:20000000 r6:866ea281 r5:00000000 r4:00005609
[<804f32d4>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x2c arch/arm/mm/proc-v7.S:64)
Exception stack(0x86c23fa8 to 0x86c23ff0)
3fa0:                   00000000 00000000 00000004 00005609 20000000 00000000
3fc0: 00000000 00000000 00000000 00000036 7eb1231a 76f686d0 7eb124a4 76f6820c
3fe0: 76f68048 76f68038 00018e9c 0004ba40
 r10:00000036 r9:86c22000 r8:80200224 r7:00000036 r6:00000000 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..