May 17 15:21:41 dell kernel: [ 764.467850] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 May 17 15:21:41 dell kernel: [ 764.467898] IP: gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] May 17 15:21:41 dell kernel: [ 764.467919] PGD 3a0622067 May 17 15:21:41 dell kernel: [ 764.467919] PUD 3a0621067 May 17 15:21:41 dell kernel: [ 764.467928] PMD 0 May 17 15:21:41 dell kernel: [ 764.467937] May 17 15:21:41 dell kernel: [ 764.467950] Oops: 0002 [#1] SMP May 17 15:21:41 dell kernel: [ 764.467968] Modules linked in: veth xt_nat xt_tcpudp ipt_MASQUERADE nf_nat_masquerade_ipv4 xfrm_user xfrm_algo iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter xt_conntrack nf_nat nf_conntrack libcrc32c br_netfilter bridge stp llc aufs rfcomm cmac pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep nls_iso8859_1 dell_wmi sparse_keymap dell_laptop dell_smm_hwmon arc4 snd_hda_codec_hdmi dell_led dell_smbios dcdbas intel_rapl x86_pkg_temp_thermal snd_hda_codec_realtek intel_powerclamp snd_hda_codec_generic coretemp kvm_intel kvm irqbypass snd_hda_intel intel_cstate intel_rapl_perf snd_hda_codec snd_hda_core snd_hwdep snd_pcm uvcvideo serio_raw videobuf2_vmalloc iwlmvm videobuf2_memops videobuf2_v4l2 videobuf2_core mac80211 videodev snd_seq_midi media May 17 15:21:41 dell kernel: [ 764.468166] snd_seq_midi_event snd_rawmidi joydev snd_seq input_leds snd_seq_device btusb iwlwifi snd_timer btrtl rtsx_pci_ms cfg80211 memstick snd soundcore shpchp mei_me intel_pch_thermal mei processor_thermal_device intel_soc_dts_iosf eeprom hci_uart btbcm btqca acpi_als btintel kfifo_buf bluetooth industrialio dell_smo8800 dell_rbtn mac_hid acpi_pad intel_lpss_acpi intel_lpss int3403_thermal int3400_thermal tpm_crb int340x_thermal_zone acpi_thermal_rel parport_pc ppdev lp parport ip_tables x_tables autofs4 algif_skcipher af_alg dm_crypt hid_logitech_hidpp hid_logitech_dj hid_generic usbhid rtsx_pci_sdmmc crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd i915 psmouse i2c_algo_bit drm_kms_helper syscopyarea rtsx_pci sysfillrect e1000e May 17 15:21:41 dell kernel: [ 764.468371] sysimgblt fb_sys_fops ptp drm ahci pps_core libahci wmi i2c_hid hid pinctrl_sunrisepoint video pinctrl_intel fjes May 17 15:21:41 dell kernel: [ 764.468412] CPU: 2 PID: 3247 Comm: skypeforlinux Tainted: G OE 4.10.0-20-generic #22+lp1674838v201705030839 May 17 15:21:41 dell kernel: [ 764.468440] Hardware name: Dell Inc. Latitude E5470/0C8FKJ, BIOS 1.3.6 01/10/2016 May 17 15:21:41 dell kernel: [ 764.468460] task: ffff89b55e9e5c00 task.stack: ffff97ce04e34000 May 17 15:21:41 dell kernel: [ 764.468490] RIP: 0010:gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] May 17 15:21:41 dell kernel: [ 764.468511] RSP: 0018:ffff97ce04e37898 EFLAGS: 00010246 May 17 15:21:41 dell kernel: [ 764.468526] RAX: ffff89b609619c80 RBX: 0000000000000003 RCX: 0000000000000003 May 17 15:21:41 dell kernel: [ 764.468545] RDX: 0000000000000000 RSI: ffff89b5f39a4000 RDI: ffff89b5f3c00000 May 17 15:21:41 dell kernel: [ 764.468564] RBP: ffff97ce04e378f0 R08: 0000000000000000 R09: 0000000000000000 May 17 15:21:41 dell kernel: [ 764.468583] R10: 0000000000000000 R11: 0000000000000041 R12: ffff89b20cbba000 May 17 15:21:41 dell kernel: [ 764.468602] R13: ffff89b5c136a710 R14: 00000000fffc7000 R15: 0000000000008000 May 17 15:21:41 dell kernel: [ 764.468622] FS: 00007f1fbc70fac0(0000) GS:ffff89b611d00000(0000) knlGS:0000000000000000 May 17 15:21:41 dell kernel: [ 764.468644] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 May 17 15:21:41 dell kernel: [ 764.468659] CR2: 0000000000000018 CR3: 000000039e97f000 CR4: 00000000003406e0 May 17 15:21:41 dell kernel: [ 764.468679] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 May 17 15:21:41 dell kernel: [ 764.468706] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 May 17 15:21:41 dell kernel: [ 764.468725] Call Trace: May 17 15:21:41 dell kernel: [ 764.468747] gen8_alloc_va_range_3lvl+0xfb/0x9e0 [i915] May 17 15:21:41 dell kernel: [ 764.468764] ? __alloc_pages_nodemask+0x209/0x260 May 17 15:21:41 dell kernel: [ 764.468788] gen8_alloc_va_range+0x23d/0x470 [i915] May 17 15:21:41 dell kernel: [ 764.468817] i915_vma_bind+0x7e/0x170 [i915] May 17 15:21:41 dell kernel: [ 764.468842] __i915_vma_do_pin+0x2a5/0x450 [i915] May 17 15:21:41 dell kernel: [ 764.468867] i915_gem_execbuffer_reserve_vma.isra.31+0x144/0x1b0 [i915] May 17 15:21:41 dell kernel: [ 764.468895] i915_gem_execbuffer_reserve.isra.32+0x39e/0x3d0 [i915] May 17 15:21:41 dell kernel: [ 764.468923] i915_gem_do_execbuffer.isra.38+0x4a2/0x1750 [i915] May 17 15:21:41 dell kernel: [ 764.468940] ? radix_tree_lookup_slot+0x22/0x50 May 17 15:21:41 dell kernel: [ 764.468955] ? find_lock_entry+0x4e/0xb0 May 17 15:21:41 dell kernel: [ 764.468977] i915_gem_execbuffer2+0xa1/0x1e0 [i915] May 17 15:21:41 dell kernel: [ 764.468998] drm_ioctl+0x21b/0x4c0 [drm] May 17 15:21:41 dell kernel: [ 764.469020] ? i915_gem_execbuffer+0x310/0x310 [i915] May 17 15:21:41 dell kernel: [ 764.469035] do_vfs_ioctl+0xa3/0x610 May 17 15:21:41 dell kernel: [ 764.469048] ? __do_page_fault+0x266/0x4e0 May 17 15:21:41 dell kernel: [ 764.469060] SyS_ioctl+0x79/0x90 May 17 15:21:41 dell kernel: [ 764.469071] entry_SYSCALL_64_fastpath+0x1e/0xad May 17 15:21:41 dell kernel: [ 764.469085] RIP: 0033:0x7f1fb482d987 May 17 15:21:41 dell kernel: [ 764.469096] RSP: 002b:00007ffde5324368 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 May 17 15:21:41 dell kernel: [ 764.469119] RAX: ffffffffffffffda RBX: 000014f3f5d55030 RCX: 00007f1fb482d987 May 17 15:21:41 dell kernel: [ 764.469138] RDX: 00007ffde53243b0 RSI: 00000000c0406469 RDI: 000000000000000e May 17 15:21:41 dell kernel: [ 764.469171] RBP: 0000000000101001 R08: 0000000000000000 R09: 0000000000000000 May 17 15:21:41 dell kernel: [ 764.469191] R10: 0000000000000050 R11: 0000000000000246 R12: 0000000000000000 May 17 15:21:41 dell kernel: [ 764.469211] R13: 00000000000001e7 R14: 00000000051e59a0 R15: 0000000000000046 May 17 15:21:41 dell kernel: [ 764.469231] Code: e6 48 8b 90 20 03 00 00 48 8b b8 d8 02 00 00 48 8b 52 08 48 83 ca 03 e8 ca cd ff ff 48 8b 45 b0 48 8b 4d c8 48 8b 10 48 8b 45 d0 <4c> 89 24 ca 48 0f ab 08 0f 1f 44 00 00 e9 53 ff ff ff 65 8b 05 May 17 15:21:41 dell kernel: [ 764.469311] RIP: gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] RSP: ffff97ce04e37898 May 17 15:21:41 dell kernel: [ 764.469335] CR2: 0000000000000018 May 17 15:21:41 dell kernel: [ 764.475880] ---[ end trace fc1f63fa226576f4 ]---