[  350.278038] ------------[ cut here ]------------
[  350.278040] kernel BUG at drivers/gpu/drm/qxl/qxl_display.c:660!
[  350.278042] invalid opcode: 0000 [#1] PREEMPT SMP
[  350.278043] Modules linked in: af_packet cfg80211 rfkill joydev ppdev parport_pc floppy parport acpi_cpufreq uhci_hcd ehci_hcd usbcore usb_common i2c_piix4 psmouse pcspkr qemu_fw_cfg vboxnetadp(O) vboxnetflt(O) pci_stub vboxpci(O) vboxdrv(O) button ip_tables x_tables ipv6 crc_ccitt ext4 crc16 jbd2 fscrypto mbcache sd_mod sr_mod cdrom virtio_net virtio_console virtio_balloon virtio_scsi ata_generic pata_acpi qxl drm_kms_helper ttm evdev input_leds serio_raw ata_piix libata drm virtio_pci virtio_ring scsi_mod i2c_core virtio intel_agp intel_gtt autofs4
[  350.278063] CPU: 2 PID: 1158 Comm: X Tainted: G           O    4.10.4-un-def-alt1 #1
[  350.278064] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.2-alt1 04/01/2014
[  350.278066] task: ffff88007a0ee0c0 task.stack: ffffc90001164000
[  350.278076] RIP: 0010:qxl_send_monitors_config+0x150/0x170 [qxl]
[  350.278077] RSP: 0018:ffffc90001167900 EFLAGS: 00010246
[  350.278078] RAX: ffffc90000892000 RBX: ffff880036e1a000 RCX: 0000000000000001
[  350.278079] RDX: ffffc9000035901c RSI: ffffc9000035901c RDI: ffff880036dfa000
[  350.278079] RBP: ffffc90001167910 R08: 0000000000000000 R09: 0000000000000000
[  350.278080] R10: 0100000000001500 R11: ffffffff00000003 R12: ffff880036e1a000
[  350.278081] R13: ffff880036dfa000 R14: ffff880036e1a000 R15: ffff880036ead000
[  350.278082] FS:  00007fa290ff7980(0000) GS:ffff88007fd00000(0000) knlGS:0000000000000000
[  350.278083] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  350.278084] CR2: 00007fa290f7b000 CR3: 0000000037281000 CR4: 00000000000006e0
[  350.278087] Call Trace:
[  350.278092]  qxl_crtc_disable+0xc9/0x150 [qxl]
[  350.278103]  __drm_helper_disable_unused_functions+0xa1/0xe0 [drm_kms_helper]
[  350.278107]  drm_crtc_helper_set_config+0xdd/0xb10 [drm_kms_helper]
[  350.278110]  ? qxl_crtc_cursor_set2+0x145/0x4f0 [qxl]
[  350.278126]  drm_mode_set_config_internal+0x60/0x110 [drm]
[  350.278131]  restore_fbdev_mode+0x1fd/0x270 [drm_kms_helper]
[  350.278140]  drm_fb_helper_restore_fbdev_mode_unlocked+0x2e/0x70 [drm_kms_helper]
[  350.278144]  drm_fb_helper_set_par+0x28/0x50 [drm_kms_helper]
[  350.278150]  fb_set_var+0x233/0x460
[  350.278155]  ? set_next_entity+0xbe/0x1c0
[  350.278157]  fbcon_blank+0x2e4/0x320
[  350.278161]  do_unblank_screen+0xbe/0x180
[  350.278165]  complete_change_console+0x54/0xd0
[  350.278167]  vt_ioctl+0x6e9/0x1290
[  350.278172]  ? cpumask_any_but+0x2c/0x40
[  350.278174]  ? flush_tlb_mm_range+0x4c/0x1d0
[  350.278176]  tty_ioctl+0x353/0xc70
[  350.278180]  ? unmap_region+0xdf/0x110
[  350.278183]  ? mntput_no_expire+0x27/0x1b0
[  350.278185]  do_vfs_ioctl+0x8d/0x5b0
[  350.278187]  ? __fget+0x72/0xa0
[  350.278188]  SyS_ioctl+0x74/0x80
[  350.278192]  do_syscall_64+0x77/0x1a0
[  350.278198]  entry_SYSCALL64_slow_path+0x25/0x25
[  350.278199] RIP: 0033:0x7fa28ec918a7
[  350.278199] RSP: 002b:00007ffdc0dbd998 EFLAGS: 00003246 ORIG_RAX: 0000000000000010
[  350.278201] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fa28ec918a7
[  350.278201] RDX: 0000000000000001 RSI: 0000000000005605 RDI: 0000000000000015
[  350.278202] RBP: 0000000000836534 R08: 0000000000000000 R09: 00000000000a0000
[  350.278202] R10: 0000000000000001 R11: 0000000000003246 R12: 0000000000000008
[  350.278203] R13: 00000000008365e0 R14: 0000000000836530 R15: 00000000008365f0
[  350.278204] Code: 73 14 45 8b 4b 10 45 8b 43 0c eb aa 48 63 c1 48 8d 3c 85 00 00 00 00 48 c1 e0 05 48 29 f8 49 01 c3 45 8b 4b 10 45 8b 43 0c eb 8b <0f> 0b 45 8b 4b 10 45 8b 43 0c 31 c9 e9 7a ff ff ff 31 c9 e9 73 
[  350.278222] RIP: qxl_send_monitors_config+0x150/0x170 [qxl] RSP: ffffc90001167900
[  350.278436] ---[ end trace 1ca0ad1117fa6ab8 ]---