mar 22 15:25:51 kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
mar 22 15:25:51 kernel: IP: nouveau_mem_host+0x47/0x1b0 [nouveau]
mar 22 15:25:52 kernel: PGD 800000011ecc6067 P4D 800000011ecc6067 PUD 11ed20067 PMD 0 
mar 22 15:25:52 kernel: Oops: 0000 [#1] SMP PTI
mar 22 15:25:52 kernel: Modules linked in: fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables snd_hda_codec_realtek coretemp kvm_intel snd_hda_codec_generic kvm snd_hda_intel dcdbas snd_hda_codec iTCO_wdt irqbypass iTCO_vendor_support gpio_ich snd_hda_core snd_hwdep i2c_i801 dell_smm_hwmon snd_seq lpc_ich snd_seq_device snd_pcm snd_timer snd shpchp soundcore acpi_cpufreq binfmt_misc nouveau hid_logitech_hidpp
mar 22 15:25:52 kernel:  video mxm_wmi wmi i2c_algo_bit drm_kms_helper ttm serio_raw drm r8169 hid_logitech_dj mii
mar 22 15:25:52 kernel: CPU: 0 PID: 1050 Comm: Xorg Not tainted 4.15.11-300.fc27.x86_64 #1
mar 22 15:25:52 kernel: Hardware name: Dell Inc. Vostro 220 Series /0JJW8N, BIOS 1.2.2 09/07/2009
mar 22 15:25:52 kernel: RIP: 0010:nouveau_mem_host+0x47/0x1b0 [nouveau]
mar 22 15:25:52 kernel: RSP: 0000:ffffa44e81567800 EFLAGS: 00010246
mar 22 15:25:52 kernel: RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000005c6cca00
mar 22 15:25:52 kernel: RDX: ffff89eef6260c00 RSI: ffff89eecfcff900 RDI: ffffa44e81567958
mar 22 15:25:52 kernel: RBP: ffff89eecfcff800 R08: 0000000000000000 R09: 0000000000000000
mar 22 15:25:52 kernel: R10: ffffebe6c2d2f4c0 R11: 0000000000000098 R12: ffffa44e81567958
mar 22 15:25:52 kernel: R13: 0000000000000000 R14: ffff89eecfcff800 R15: ffffa44e81567958
mar 22 15:25:52 kernel: FS:  00007f6ec8b5fa80(0000) GS:ffff89eeffc00000(0000) knlGS:0000000000000000
mar 22 15:25:52 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
mar 22 15:25:52 kernel: CR2: 0000000000000040 CR3: 000000011ed16000 CR4: 00000000000406f0
mar 22 15:25:52 kernel: Call Trace:
mar 22 15:25:52 kernel:  nv50_sgdma_bind+0x18/0x30 [nouveau]
mar 22 15:25:52 kernel:  ttm_tt_bind+0x3f/0x60 [ttm]
mar 22 15:25:52 kernel:  ttm_bo_handle_move_mem+0x5da/0x610 [ttm]
mar 22 15:25:52 kernel:  ttm_bo_evict+0x14d/0x330 [ttm]
mar 22 15:25:52 kernel:  ttm_mem_evict_first+0x161/0x1d0 [ttm]
mar 22 15:25:52 kernel:  ttm_bo_mem_space+0x344/0x4c0 [ttm]
mar 22 15:25:52 kernel:  ttm_bo_validate+0xce/0x150 [ttm]
mar 22 15:25:52 kernel:  ttm_bo_init_reserved+0x385/0x430 [ttm]
mar 22 15:25:52 kernel:  ttm_bo_init+0x2f/0x90 [ttm]
mar 22 15:25:52 kernel:  ? nouveau_bo_invalidate_caches+0x10/0x10 [nouveau]
mar 22 15:25:52 kernel:  nouveau_bo_new+0x416/0x590 [nouveau]
mar 22 15:25:52 kernel:  ? nouveau_bo_invalidate_caches+0x10/0x10 [nouveau]
mar 22 15:25:52 kernel:  ? nouveau_gem_new+0x120/0x120 [nouveau]
mar 22 15:25:52 kernel:  nouveau_gem_new+0x5d/0x120 [nouveau]
mar 22 15:25:52 kernel:  nouveau_gem_ioctl_new+0x51/0xd0 [nouveau]
mar 22 15:25:52 kernel:  drm_ioctl_kernel+0x5b/0xb0 [drm]
mar 22 15:25:52 kernel:  drm_ioctl+0x2d5/0x370 [drm]
mar 22 15:25:52 kernel:  ? nouveau_gem_new+0x120/0x120 [nouveau]
mar 22 15:25:52 kernel:  ? __handle_mm_fault+0xd2b/0x12f0
mar 22 15:25:52 kernel:  ? vfs_writev+0xb9/0x110
mar 22 15:25:52 kernel:  nouveau_drm_ioctl+0x64/0xc0 [nouveau]
mar 22 15:25:52 kernel:  do_vfs_ioctl+0xa4/0x620
mar 22 15:25:52 kernel:  SyS_ioctl+0x74/0x80
mar 22 15:25:52 kernel:  do_syscall_64+0x74/0x180
mar 22 15:25:52 kernel:  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
mar 22 15:25:52 kernel: RIP: 0033:0x7f6ec5e5b0f7
mar 22 15:25:52 kernel: RSP: 002b:00007fff4cea0428 EFLAGS: 00003246 ORIG_RAX: 0000000000000010
mar 22 15:25:52 kernel: RAX: ffffffffffffffda RBX: 0000000001d53d40 RCX: 00007f6ec5e5b0f7
mar 22 15:25:52 kernel: RDX: 00007fff4cea0480 RSI: 00000000c0306480 RDI: 0000000000000010
mar 22 15:25:52 kernel: RBP: 00007fff4cea0480 R08: 0000000000000000 R09: 00007f6ec611fca0
mar 22 15:25:52 kernel: R10: 0000000000000000 R11: 0000000000003246 R12: 00000000c0306480
mar 22 15:25:52 kernel: R13: 0000000000000010 R14: 0000000001d82878 R15: 00000000019081b0
mar 22 15:25:52 kernel: Code: 04 25 28 00 00 00 48 89 44 24 20 31 c0 49 8b 1e 48 c7 44 24 08 00 00 00 00 48 c7 44 24 10 00 00 00 00 48 c7 44 24 18 00 00 00 00 <48> 8b 7b 40 48 8d 83 f8 00 00 00 44 0f b6 6b 39 48 89 04 24 48 
mar 22 15:25:52 kernel: RIP: nouveau_mem_host+0x47/0x1b0 [nouveau] RSP: ffffa44e81567800
mar 22 15:25:52 kernel: CR2: 0000000000000040
mar 22 15:25:52 kernel: ---[ end trace f3f7ca893463231b ]---