Please see following trace on Factory. It happens on wayland only for me when I
moved active virt-manger windows between various screens, unfortunately not
everytime.
[848406.131434] ------------[ cut here ]------------
[848406.131467] WARNING: CPU: 7 PID: 4479 at
../drivers/gpu/drm/radeon/radeon_cursor.c:198
radeon_cursor_move_locked+0x135/0x460 [radeon]
[848406.131469] Modules linked in: fuse nf_log_ipv6 xt_pkttype nf_log_ipv4
nf_log_common xt_LOG xt_limit af_packet iscsi_ibft iscsi_boot_sysfs msr xfs
libcrc32c nls_iso8859_1 nls_cp437 vfat fat snd_hda_codec_realtek
snd_hda_codec_generic snd_hda_codec_hdmi intel_rapl x86_pkg_temp_thermal
intel_powerclamp coretemp ip6t_REJECT nf_reject_ipv6 xt_tcpudp
nf_conntrack_ipv6 mei_wdt nf_defrag_ipv6 snd_hda_intel kvm_intel snd_usb_audio
snd_hda_codec snd_usbmidi_lib snd_hda_core snd_rawmidi snd_hwdep snd_seq_device
ip6table_raw kvm irqbypass crct10dif_pclmul snd_pcm crc32_pclmul ipt_REJECT
nf_reject_ipv4 uvcvideo uas videobuf2_vmalloc ghash_clmulni_intel
videobuf2_memops videobuf2_v4l2 aesni_intel iptable_raw videobuf2_core
snd_timer aes_x86_64 lrw gf128mul iTCO_wdt xt_CT glue_helper
iTCO_vendor_support videodev
[848406.131504] dcdbas ablk_helper cryptd usb_storage battery i2c_i801
iptable_filter snd soundcore e1000e mei_me ptp lpc_ich mei pps_core mfd_core
ip6table_mangle nf_conntrack_netbios_ns nf_conntrack_broadcast
nf_conntrack_ipv4 thermal nf_defrag_ipv4 fjes ie31200_edac ip_tables tpm_tis
shpchp edac_core tpm xt_conntrack nf_conntrack ip6table_filter ip6_tables
x_tables hid_generic usbhid btrfs xor sg raid6_pq crc32c_intel amdkfd
amd_iommu_v2 serio_raw dm_multipath sr_mod cdrom radeon i915 i2c_algo_bit
xhci_pci ehci_pci drm_kms_helper syscopyarea xhci_hcd sysfillrect ehci_hcd
sysimgblt ttm fb_sys_fops usbcore drm usb_common video button dm_mod
scsi_dh_rdac scsi_dh_emc scsi_dh_alua efivarfs
[848406.131543] CPU: 7 PID: 4479 Comm: gnome-shell Not tainted 4.7.2-2-default
#1
[848406.131544] Hardware name: Dell Inc. OptiPlex 9010/00F82W, BIOS A14
06/11/2013
[848406.131546] 0000000000000000 ffffffff813931c4 0000000000000000
0000000000000000
[848406.131549] ffffffff8107ca1e ffff880418626000 ffff88041bbac000
0000000000000001
[848406.131551] 0000000000000000 00000000ffffffff 0000000000000004
ffffffffa045bd45
[848406.131554] Call Trace:
[848406.131567] [<ffffffff8102ed5e>] dump_trace+0x5e/0x320
[848406.131572] [<ffffffff8102f12c>] show_stack_log_lvl+0x10c/0x180
[848406.131575] [<ffffffff8102fe41>] show_stack+0x21/0x40
[848406.131580] [<ffffffff813931c4>] dump_stack+0x5c/0x78
[848406.131585] [<ffffffff8107ca1e>] __warn+0xbe/0xe0
[848406.131606] [<ffffffffa045bd45>] radeon_cursor_move_locked+0x135/0x460
[radeon]
[848406.131628] [<ffffffffa045c428>] radeon_crtc_cursor_move+0x28/0x40
[radeon]
[848406.131648] [<ffffffffa007b597>] drm_mode_cursor_common+0x127/0x170 [drm]
[848406.131664] [<ffffffffa007f544>] drm_mode_cursor_ioctl+0x44/0x50 [drm]
[848406.131676] [<ffffffffa00715a1>] drm_ioctl+0x131/0x4c0 [drm]
[848406.131692] [<ffffffffa0430049>] radeon_drm_ioctl+0x49/0x80 [radeon]
[848406.131697] [<ffffffff81222b40>] do_vfs_ioctl+0x90/0x5c0
[848406.131701] [<ffffffff812230e4>] SyS_ioctl+0x74/0x80
[848406.131706] [<ffffffff816bb536>] entry_SYSCALL_64_fastpath+0x1e/0xa8
[848406.133744] DWARF2 unwinder stuck at entry_SYSCALL_64_fastpath+0x1e/0xa8
[848406.133747] Leftover inexact backtrace:
[848406.133769] ---[ end trace 21f0530c5fd77995 ]---