ago 22 15:59:43 p50.tole.es kernel: nouveau 0000:01:00.0: Xwayland[28959]: nv50cal_space: -16
ago 22 15:59:43 p50.tole.es kernel: nouveau 0000:01:00.0: Xwayland[28959]: nv50cal_space: -16

This kills the system and sometimes it returns,but most of the times I need to  kill it over ssh as it stops me from working anymore

(on 4.12.5-300.fc26.x86_64 ) Fedora 26

Also shows info on gnome-shell:

ago 24 11:35:28 p50.tole.es kernel: nouveau 0000:01:00.0: Xwayland[2308]: nv50cal_space: -16
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau: kernel rejected pushbuf: Device or resource busy
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau: ch17: krec 0 pushes 1 bufs 5 relocs 0
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau: ch17: buf 00000000 00000003 00000004 00000004 0000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau: ch17: buf 00000001 00000006 00000004 00000000 0000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau: ch17: buf 00000002 0000003b 00000002 00000000 0000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau: ch17: buf 00000003 00000031 00000004 00000004 0000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau: ch17: buf 00000004 00000032 00000004 00000004 0000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau: ch17: psh 00000000 000007d544 000007d664
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x20056080
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x000000e6
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000040
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000001
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x20046086
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000782
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x0000043a
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x08880000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x2002608c
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x000000cf
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000001
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x20056091
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000680
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000194
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x0000004d
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x0c0a2000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x80006223
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x2004622c
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000001
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000283
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000194
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x0000004d
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x20046230
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000001
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000001
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x20046234
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x20056080
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x000000e6
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000040
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000001
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x20046086
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000782
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x0000043a
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x08880000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x2002608c
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x000000cf
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000001
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x20056091
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000080
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000009
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000016
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x0c0d6000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x80006223
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x2004622c
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x000001cf
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000410
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000009
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000016
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x20046230
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000001
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000001
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x20046234
ago 24 11:35:28 p50.tole.es org.gnome.Shell.desktop[2300]: nouveau:         0x00000000




Any specific log required to diagnose this?