Bug 213211

[   77.102746] ------------[ cut here ]------------
[   77.102768] kernel BUG at drivers/gpu/drm/qxl/qxl_display.c:293!
[   77.102866] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[   77.102894] CPU: 2 PID: 503 Comm: Xorg Tainted: G           OE     5.12.6-arch1-1 #1
[   77.102906] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[   77.102919] RIP: 0010:qxl_crtc_update_monitors_config+0x33f/0x360 [qxl]
[   77.102953] Code: 5c 41 5d 41 5e 41 5f e9 af 3b 00 00 44 8b 69 10 45 85 ed 74 23 45 31 ed 45 31 ff 45 31 c9 48 c7 c0 68 f6 8c c0 e9 a4 fd ff ff <0f> 0b 48 89 f2 48 c7 c6 6c f6 8c c0 eb a6 45 31 c9 45 31 ff e9 d0
[   77.102956] RSP: 0018:ffffb6258101b8f0 EFLAGS: 00010246
[   77.102963] RAX: ffffb62580626000 RBX: 0000000000000000 RCX: 0000000000000001
[   77.102965] RDX: 0000000000000004 RSI: ffffffffc08cef28 RDI: 0000000000000000
[   77.102966] RBP: ffff88f483c9e000 R08: 0000000000000300 R09: 0000000000000000
[   77.102968] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
[   77.102969] R13: 0000000000000400 R14: 0000000000000300 R15: 0000000000000000
[   77.102972] FS:  00007fc01a95d940(0000) GS:ffff88f4bed00000(0000) knlGS:0000000000000000
[   77.102974] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   77.102976] CR2: 00007fe4e72df9a0 CR3: 00000000146ac000 CR4: 00000000000406e0
[   77.102979] Call Trace:
[   77.103000]  drm_atomic_helper_commit_planes+0x1bc/0x220 [drm_kms_helper]
[   77.103086]  drm_atomic_helper_commit_tail+0x42/0x80 [drm_kms_helper]
[   77.103108]  commit_tail+0xce/0x120 [drm_kms_helper]
[   77.103131]  drm_atomic_helper_commit+0x113/0x140 [drm_kms_helper]
[   77.103163]  drm_client_modeset_commit_atomic+0x1fc/0x240 [drm]
[   77.103303]  drm_client_modeset_commit_locked+0x56/0x150 [drm]
[   77.103340]  drm_fb_helper_set_par+0x75/0xd0 [drm_kms_helper]
[   77.103366]  fb_set_var+0x1d3/0x390
[   77.103415]  ? kvm_sched_clock_read+0x14/0x40
[   77.103435]  ? sched_clock+0x5/0x10
[   77.103440]  ? sched_clock_cpu+0xc/0xb0
[   77.103454]  fbcon_blank+0x186/0x280
[   77.103466]  do_unblank_screen+0xaa/0x150
[   77.103485]  vt_ioctl+0xdf4/0x13c0
[   77.103491]  ? restore_sigcontext+0x167/0x1d0
[   77.103496]  tty_ioctl+0x377/0x930
[   77.103515]  ? mntput_no_expire+0x4a/0x270
[   77.103527]  ? call_rcu+0x9c/0x290
[   77.103534]  __x64_sys_ioctl+0x82/0xb0
[   77.103547]  do_syscall_64+0x33/0x40
[   77.103578]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   77.103589] RIP: 0033:0x7fc01a7b559b
[   77.103597] Code: ff ff ff 85 c0 79 9b 49 c7 c4 ff ff ff ff 5b 5d 4c 89 e0 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a5 a8 0c 00 f7 d8 64 89 01 48
[   77.103599] RSP: 002b:00007ffd1ef648f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   77.103602] RAX: ffffffffffffffda RBX: 000055c2aa426d20 RCX: 00007fc01a7b559b
[   77.103604] RDX: 0000000000000000 RSI: 0000000000004b3a RDI: 000000000000000c
[   77.103605] RBP: 0000000000000001 R08: 0000000000000000 R09: 00000000000a0000
[   77.103607] R10: 00007fc01a9f8ba0 R11: 0000000000000246 R12: 00007ffd1ef64990
[   77.103608] R13: 00000000000000bf R14: 0000000000000008 R15: 0000000000000005
[   77.103615] Modules linked in: tcp_bbr tun edac_mce_amd kvm_amd qxl ccp snd_intel8x0 squashfs drm_ttm_helper ttm ppdev drm_kms_helper kvm loop irqbypass snd_ac97_codec crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel ac97_bus snd_pcm snd_timer lzo_rle snd cec joydev syscopyarea psmouse mousedev pcspkr sysfillrect crypto_simd cryptd mac_hid sysimgblt fb_sys_fops soundcore parport_pc parport qemu_fw_cfg i2c_piix4 intel_agp intel_gtt zram sg vhba(OE) drm fuse agpgart bpf_preload ip_tables x_tables btrfs blake2b_generic libcrc32c crc32c_generic xor raid6_pq sr_mod cdrom ata_generic pata_acpi virtio_net net_failover failover virtio_blk virtio_rng virtio_input rng_core serio_raw atkbd libps2 crc32c_intel i8042 virtio_pci virtio_pci_modern_dev ata_piix floppy serio
[   77.103884] ---[ end trace e0e0313ab8fbe380 ]---
[   77.103890] RIP: 0010:qxl_crtc_update_monitors_config+0x33f/0x360 [qxl]
[   77.103897] Code: 5c 41 5d 41 5e 41 5f e9 af 3b 00 00 44 8b 69 10 45 85 ed 74 23 45 31 ed 45 31 ff 45 31 c9 48 c7 c0 68 f6 8c c0 e9 a4 fd ff ff <0f> 0b 48 89 f2 48 c7 c6 6c f6 8c c0 eb a6 45 31 c9 45 31 ff e9 d0
[   77.103898] RSP: 0018:ffffb6258101b8f0 EFLAGS: 00010246
[   77.103900] RAX: ffffb62580626000 RBX: 0000000000000000 RCX: 0000000000000001
[   77.103902] RDX: 0000000000000004 RSI: ffffffffc08cef28 RDI: 0000000000000000
[   77.103903] RBP: ffff88f483c9e000 R08: 0000000000000300 R09: 0000000000000000
[   77.103904] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
[   77.103909] R13: 0000000000000400 R14: 0000000000000300 R15: 0000000000000000
[   77.103913] FS:  00007fc01a95d940(0000) GS:ffff88f4bed00000(0000) knlGS:0000000000000000
[   77.103915] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   77.103916] CR2: 00007fe4e72df9a0 CR3: 00000000146ac000 CR4: 00000000000406e0