audit: type=1800 audit(1552100154.427:30): pid=7523 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0
[drm:drm_calc_timestamping_constants] *ERROR* crtc 31: Can't calculate constants, dotclock = 0!
WARNING: CPU: 0 PID: 7697 at drivers/gpu/drm/vkms/vkms_crtc.c:40 vkms_vblank_simulate+0x262/0x2c0 drivers/gpu/drm/vkms/vkms_crtc.c:40
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 7697 Comm: syz-executor649 Not tainted 5.0.0+ #13
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+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x45 kernel/panic.c:571
 report_bug+0x263/0x2b0 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+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:vkms_vblank_simulate+0x262/0x2c0 drivers/gpu/drm/vkms/vkms_crtc.c:40
Code: c7 c7 40 07 bc 87 e8 6d 67 bb ff e9 2c fe ff ff e8 93 5e 9b fd 48 8b 45 d0 49 89 86 40 02 00 00 e9 7a ff ff ff e8 7e 5e 9b fd <0f> 0b e9 f4 fe ff ff e8 b2 57 d3 fd e9 34 fe ff ff e8 08 58 d3 fd
RSP: 0018:ffff8880ae807dd8 EFLAGS: 00010006
RAX: ffff888090dfa380 RBX: ffff8880ae825d80 RCX: ffffffff83d4f673
RDX: 0000000000010000 RSI: ffffffff83d4f782 RDI: 0000000000000007
RBP: ffff8880ae807e08 R08: ffff888090dfa380 R09: ffffffff899a4008
R10: ffffffff899a4010 R11: 0000000000000001 R12: 0000000000079984
R13: ffff8880a4261ac0 R14: 0000000000000000 R15: ffff8880a4260f98
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x33e/0xde0 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline]
 smp_apic_timer_interrupt+0x120/0x570 arch/x86/kernel/apic/apic.c:1060
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:767 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x95/0xe0 kernel/locking/spinlock.c:184
Code: 48 c7 c0 30 94 92 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d a2 f0 88 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 9c 0f 44 fa 65 8b 05 e5 49 f8 78
RSP: 0018:ffff88809e60fb20 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1125286 RBX: 0000000000000282 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: 0000000000000282
RBP: ffff88809e60fb30 R08: ffff888090dfa380 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a4260530
R13: 0000000000000000 R14: ffff8880a4260530 R15: ffff8880a415ddc8
 spin_unlock_irqrestore include/linux/spinlock.h:384 [inline]
 drm_vblank_get+0x150/0x1e0 drivers/gpu/drm/drm_vblank.c:1006
 drm_wait_vblank_ioctl+0x4f8/0x17a0 drivers/gpu/drm/drm_vblank.c:1627
 drm_ioctl_kernel+0x23e/0x2e0 drivers/gpu/drm/drm_ioctl.c:770
 compat_drm_wait_vblank+0xd6/0x190 drivers/gpu/drm/drm_ioc32.c:845
 drm_compat_ioctl+0x1e5/0x310 drivers/gpu/drm/drm_ioc32.c:977
 __do_compat_sys_ioctl fs/compat_ioctl.c:1052 [inline]
 __se_compat_sys_ioctl fs/compat_ioctl.c:998 [inline]
 __ia32_compat_sys_ioctl+0x197/0x620 fs/compat_ioctl.c:998
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x281/0xc98 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fcc869
Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ffc9799c EFLAGS: 00000213 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000c018643a
RDX: 0000000020000080 RSI: 00000000080ef078 RDI: 00000000ffc979f0
RBP: 0000000000001000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..