------------[ cut here ]------------
WARNING: CPU: 0 PID: 7785 at drivers/gpu/drm/vkms/vkms_crtc.c:20 vkms_vblank_simulate.cold+0x11/0x2e drivers/gpu/drm/vkms/vkms_crtc.c:20
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 7785 Comm: syz-executor.0 Not tainted 5.3.0+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xf5/0x159 lib/dump_stack.c:113
 panic+0x209/0x639 kernel/panic.c:219
 __warn.cold+0x4c/0x4d kernel/panic.c:576
 report_bug+0x1cf/0x1e0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0xda/0x140 arch/x86/kernel/traps.c:272
 do_invalid_op+0x43/0x60 arch/x86/kernel/traps.c:291
 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:vkms_vblank_simulate.cold+0x11/0x2e drivers/gpu/drm/vkms/vkms_crtc.c:20
Code: 41 5d 41 5e 5d c3 e8 e0 9b 91 fe 48 c7 c7 5d 60 6c 85 e8 c4 c4 d5 ff eb d7 e8 cd 9b 91 fe 48 c7 c7 b8 4f 5d 85 e8 83 21 84 fe <0f> 0b e9 48 f9 ff ff e8 b5 9b 91 fe 48 c7 c7 30 60 6c 85 e8 6b 21
RSP: 0018:ffffc90000003e48 EFLAGS: 00010086
RAX: 0000000000000024 RBX: ffff88812a92cf68 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81388b4d RDI: 0000000000000005
RBP: ffffc90000003e80 R08: ffff8880a64d90c0 R09: ffffc90000003c47
R10: 0000000000003043 R11: 0000000000013043 R12: 0000000000007858
R13: ffff88821b213400 R14: ffff88812a92cfc8 R15: ffff88812a92c608
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x288/0x600 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x22a/0x480 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0xdc/0x280 arch/x86/kernel/apic/apic.c:1135
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:768 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x51/0x80 kernel/locking/spinlock.c:191
Code: 11 01 00 74 49 48 89 df c6 07 00 0f 1f 40 00 48 c7 c7 10 5a a5 85 e8 6e 31 bf fc 48 83 3d 76 b8 11 01 00 74 2b 4c 89 e7 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 00 6f a0 fc 65 8b 05 51 ca 6d 7b
RSP: 0018:ffffc9000b2d7b80 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: ffff88812a92c13c RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000282
RBP: ffffc9000b2d7b90 R08: ffff8880a64d90c0 R09: 0000000000000000
R10: 0000000035383737 R11: 0000000038373754 R12: 0000000000000282
R13: 0000000000000000 R14: 0000000000000282 R15: ffff88812a92c13c
 spin_unlock_irqrestore include/linux/spinlock.h:393 [inline]
 drm_vblank_get+0xf2/0x140 drivers/gpu/drm/drm_vblank.c:1016
 drm_wait_vblank_ioctl+0x2d4/0xd30 drivers/gpu/drm/drm_vblank.c:1637
 drm_ioctl_kernel+0x15a/0x1c0 drivers/gpu/drm/drm_ioctl.c:782
 drm_ioctl+0x3c6/0x636 drivers/gpu/drm/drm_ioctl.c:882
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0x991/0xc60 fs/ioctl.c:696
 ksys_ioctl+0xbd/0xe0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x4c/0x60 fs/ioctl.c:718
 do_syscall_64+0xcf/0x2f0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x459a29
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f0039706c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a29
RDX: 0000000020000040 RSI: 00000000c018643a RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f00397076d4
R13: 00000000004c1ae0 R14: 00000000004d51d0 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..