------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 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: 0 PID: 1 Comm: swapper/0 Not tainted 5.12.0-rc2-syzkaller-00302-g28806e4d9b97 #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 : ffff00006a694360
x29: ffff00006a694360 x28: ffff000010fc9e58 
x27: dfff800000000000 x26: ffff00006a67f540 
x25: 1fffe0000d4cfeb1 x24: 1fffe0000d4cfeaa 
x23: ffff000010fc8d30 x22: 0000000000fe4c00 
x21: ffff00006a67f540 x20: ffff000010fc8e58 
x19: ffff000010fc9e58 x18: ffff00006a678b48 
x17: 00000000000013e8 x16: 0000000000000003 
x15: ffff8000197be810 x14: 1fffe0000d4d2826 
x13: 0000000000000001 x12: 0000000000000033 
x11: 1fffe000015b711e x10: 0000000000000007 
x9 : 1fffe000015b7126 x8 : ffff800017d14c00 
x7 : 00000000f1f1f1f1 x6 : dfff800000000000 
x5 : 7fffffffffffffff x4 : 0000000a8871a6b0 
x3 : 0000000a896ff2b0 x2 : 0000000a8871a6b0 
x1 : 0000000a896ff2b0 x0 : 0000000000000002 
Call trace:
 vkms_vblank_simulate+0x26c/0x2f4 drivers/gpu/drm/vkms/vkms_crtc.c:41
 __run_hrtimer kernel/time/hrtimer.c:1519 [inline]
 __hrtimer_run_queues+0x590/0xe40 kernel/time/hrtimer.c:1583
 hrtimer_interrupt+0x2d4/0x810 kernel/time/hrtimer.c:1645
 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
 arch_local_irq_restore+0x8/0x10 arch/arm64/include/asm/irqflags.h:124
 lock_is_held include/linux/lockdep.h:278 [inline]
 ___might_sleep+0x45c/0x4e0 kernel/sched/core.c:8296
 __might_sleep+0x88/0x170 kernel/sched/core.c:8284
 __mutex_lock_common kernel/locking/mutex.c:925 [inline]
 __mutex_lock+0xb0/0x99c kernel/locking/mutex.c:1093
 mutex_lock_nested+0x78/0x100 kernel/locking/mutex.c:1108
 kernfs_activate+0x4c/0x1b4 fs/kernfs/dir.c:1266
 kernfs_add_one+0x224/0x35c fs/kernfs/dir.c:807
 __kernfs_create_file+0x208/0x330 fs/kernfs/file.c:1014
 sysfs_add_file_mode_ns+0x1c4/0x424 fs/sysfs/file.c:317
 sysfs_merge_group+0x168/0x29c fs/sysfs/group.c:343
 dpm_sysfs_add+0x190/0x1c4 drivers/base/power/sysfs.c:707
 device_add+0x72c/0x15f0 drivers/base/core.c:3199
 device_register+0x20/0x30 drivers/base/core.c:3315
 workqueue_sysfs_register+0x164/0x344 kernel/workqueue.c:5692
 alloc_workqueue+0x50c/0xa9c kernel/workqueue.c:4314
 nvme_core_init+0x38/0x15c drivers/nvme/host/core.c:4765
 do_one_initcall+0x138/0x9a0 init/main.c:1226
 do_initcall_level init/main.c:1299 [inline]
 do_initcalls init/main.c:1315 [inline]
 do_basic_setup init/main.c:1335 [inline]
 kernel_init_freeable+0x6c4/0x72c init/main.c:1537
 kernel_init+0x14/0x124 init/main.c:1424
 ret_from_fork+0x10/0x3c arch/arm64/kernel/entry.S:958