WARNING: CPU: 0 PID: 8934 at drivers/gpu/drm/vkms/vkms_crtc.c:20 vkms_vblank_simulate+0x257/0x2c0 drivers/gpu/drm/vkms/vkms_crtc.c:20
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8934 Comm: syz-executor447 Not tainted 5.2.0-rc4-next-20190612 #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/0x744 kernel/panic.c:219
 __warn.cold+0x20/0x4d kernel/panic.c:576
 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:986
RIP: 0010:vkms_vblank_simulate+0x257/0x2c0 drivers/gpu/drm/vkms/vkms_crtc.c:20
Code: c7 c7 a0 aa e0 87 e8 c8 89 b7 ff e9 d2 fe ff ff e8 2e d5 8f fd 48 8b 45 d0 49 89 85 40 02 00 00 e9 7c ff ff ff e8 19 d5 8f fd <0f> 0b e9 8f fe ff ff e8 ad da c8 fd e9 d9 fe ff ff 48 89 55 d0 e8
RSP: 0018:ffff8880ae809dd8 EFLAGS: 00010006
RAX: ffff88808d6d2240 RBX: ffff8880a3cad950 RCX: ffffffff83e12bf3
RDX: 0000000000010000 RSI: ffffffff83e12d67 RDI: 0000000000000007
RBP: ffff8880ae809e08 R08: ffff88808d6d2240 R09: 0000000000000002
R10: fffffbfff1503fec R11: ffff88808d6d2240 R12: 000000000002d9d9
R13: ffff8880a3ccd6c0 R14: ffff8880a3cad9b0 R15: ffff8880a3cacea0
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x33b/0xdd0 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline]
 smp_apic_timer_interrupt+0x111/0x550 arch/x86/kernel/apic/apic.c:1066
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806
 </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:191
Code: 48 c7 c0 30 7b d2 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d 12 b1 ae 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 2c 0f 2a fa 65 8b 05 4d 33 de 78
RSP: 0018:ffff88808c4c7928 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff11a4f66 RBX: 0000000000000282 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: 0000000000000282
RBP: ffff88808c4c7938 R08: ffff88808d6d2240 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a3cac5b0
R13: 0000000000000000 R14: ffff8880a3cac5b0 R15: ffff8880a3cf2448
 spin_unlock_irqrestore include/linux/spinlock.h:393 [inline]
 drm_vblank_get+0x150/0x1e0 drivers/gpu/drm/drm_vblank.c:1012
 drm_wait_vblank_ioctl+0x513/0x1950 drivers/gpu/drm/drm_vblank.c:1633
 drm_ioctl_kernel+0x244/0x300 drivers/gpu/drm/drm_ioctl.c:782
 drm_ioctl+0x54e/0xa60 drivers/gpu/drm/drm_ioctl.c:882
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xdb6/0x13e0 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x443e89
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 7b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fffd1938848 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443e89
RDX: 0000000020000040 RSI: 00000000c02c563a RDI: 0000000000000003
RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0
R10: 000000000000000f R11: 0000000000000246 R12: 0000000000401b90
R13: 0000000000401c20 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..