------------[ cut here ]------------
WARNING: CPU: 1 PID: 21 at drivers/gpu/drm/vkms/vkms_crtc.c:21 vkms_vblank_simulate+0x26c/0x2f4 drivers/gpu/drm/vkms/vkms_crtc.c:41
Modules linked in:
CPU: 1 PID: 21 Comm: kdevtmpfs Not tainted 5.12.0-rc3-syzkaller-00020-g1df27313f50a #0
Hardware name: linux,dummy-virt (DT)
pstate: 20000085 (nzCv daIf -PAN -UAO -TCO BTYPE=--)
pc : vkms_vblank_simulate+0x26c/0x2f4 drivers/gpu/drm/vkms/vkms_crtc.c:21
lr : hrtimer_forward_now include/linux/hrtimer.h:510 [inline]
lr : vkms_vblank_simulate+0x90/0x2f4 drivers/gpu/drm/vkms/vkms_crtc.c:19
sp : ffff00006ab5b350
x29: ffff00006ab5b350 x28: ffff000009865e58 
x27: dfff800000000000 x26: ffff00006ab46540 
x25: 1fffe0000d568cb1 x24: 1fffe0000d568caa 
x23: ffff000009864d30 x22: 0000000000fe4c00 
x21: ffff00006ab46540 x20: ffff000009864e58 
x19: ffff000009865e58 x18: ffff00006ab3fb48 
x17: 00000000000013e8 x16: 00000000000013ec 
x15: ffff8000172b6810 x14: 1fffe0000d56b620 
x13: 0000000000000001 x12: 0000000000000033 
x11: 1fffe0000115811e x10: 0000000000000007 
x9 : 1fffe00001158130 x8 : ffff800015e18c00 
x7 : 00000000f1f1f1f1 x6 : dfff800000000000 
x5 : 7fffffffffffffff x4 : 0000000852f0f730 
x3 : 0000000853ef4330 x2 : 0000000852f0f730 
x1 : 0000000853ef4330 x0 : 0000000000000002 
Call trace:
 vkms_vblank_simulate+0x26c/0x2f4 drivers/gpu/drm/vkms/vkms_crtc.c:41
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x590/0xe40 kernel/time/hrtimer.c:1601
 hrtimer_interrupt+0x2e0/0x910 kernel/time/hrtimer.c:1663
 timer_handler drivers/clocksource/arm_arch_timer.c:647 [inline]
 arch_timer_handler_phys+0x4c/0x70 drivers/clocksource/arm_arch_timer.c:665
 handle_percpu_devid_irq+0x19c/0x330 kernel/irq/chip.c:930
 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
 generic_handle_irq kernel/irq/irqdesc.c:652 [inline]
 __handle_domain_irq+0x11c/0x1f0 kernel/irq/irqdesc.c:689
 handle_domain_irq include/linux/irqdesc.h:176 [inline]
 gic_handle_irq+0x5c/0x1b0 drivers/irqchip/irq-gic.c:370
 el1_irq+0xb4/0x180 arch/arm64/kernel/entry.S:669
 rcu_read_lock include/linux/rcupdate.h:654 [inline]
 dput+0x78/0x870 fs/dcache.c:872
 done_path_create+0x24/0xfc fs/namei.c:3644
 handle_create+0x374/0x3c8 drivers/base/devtmpfs.c:231
 handle drivers/base/devtmpfs.c:380 [inline]
 devtmpfs_work_loop drivers/base/devtmpfs.c:395 [inline]
 devtmpfsd+0x1b0/0x28c drivers/base/devtmpfs.c:437
 kthread+0x320/0x3bc kernel/kthread.c:292
 ret_from_fork+0x10/0x3c arch/arm64/kernel/entry.S:958