Comment 36 for bug 1680904

I have this bug on Dell XPS 13 9360 with Ubuntu 16.04 and 4.10.0-22-generic (installed as depend of linux-generic-hwe-16.04-edge).

Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671314] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671360] IP: gen8_ppgtt_alloc_page_directories.isra.38+0x124/0x270 [i915]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671378] PGD 46428e067
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671379] PUD 45a436067
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671388] PMD 0
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671396]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671409] Oops: 0002 [#1] SMP
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671419] Modules linked in: uas usb_storage ccm cmac arc4 nvram msr ath10k_pci ath10k_core ath mac80211 cfg80211 rfcomm cdc_ether usbnet snd_usb_audio snd_usbmidi_lib r8152 mii pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev media btusb btrtl bnep nls_iso8859_1 hid_multitouch snd_hda_codec_hdmi dell_led i2c_designware_platform i2c_designware_core snd_soc_skl snd_soc_skl_ipc dell_wmi snd_soc_sst_ipc dm_crypt snd_soc_sst_dsp snd_hda_ext_core snd_soc_sst_match snd_hda_codec_realtek snd_soc_core snd_hda_codec_generic dell_laptop dell_smbios dcdbas snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep intel_rapl x86_pkg_temp_thermal intel_powerclamp snd_pcm coretemp
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671593] kvm_intel kvm snd_seq_midi snd_seq_midi_event irqbypass crct10dif_pclmul snd_rawmidi crc32_pclmul ghash_clmulni_intel pcbc snd_seq aesni_intel aes_x86_64 crypto_simd snd_seq_device glue_helper snd_timer cryptd snd input_leds joydev serio_raw soundcore rtsx_pci_ms memstick mei_me idma64 mei virt_dma processor_thermal_device shpchp intel_soc_dts_iosf intel_pch_thermal intel_lpss_pci hci_uart btbcm btqca soc_button_array intel_vbtn btintel intel_hid bluetooth intel_lpss_acpi intel_lpss int3403_thermal tpm_crb mac_hid int340x_thermal_zone int3400_thermal sparse_keymap acpi_thermal_rel acpi_pad acpi_als kfifo_buf industrialio parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq hid_logitech_hidpp hid_logitech_dj hid_plantronics usbhid dm_mirror dm_region_hash dm_log rtsx_pci_sdmmc i915
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671768] i2c_algo_bit drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt fb_sys_fops nvme drm rtsx_pci nvme_core i2c_hid wmi hid video fjes
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671805] CPU: 3 PID: 16658 Comm: skypeforlinux Tainted: G W OE 4.10.0-22-generic #24~16.04.1-Ubuntu
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671830] Hardware name: Dell Inc. XPS 13 9360/0839Y6, BIOS 1.3.5 05/08/2017
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671849] task: ffff9970b4215c00 task.stack: ffffb2f3c5294000
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671877] RIP: 0010:gen8_ppgtt_alloc_page_directories.isra.38+0x124/0x270 [i915]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671897] RSP: 0018:ffffb2f3c5297890 EFLAGS: 00010246
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671911] RAX: ffff997289f7eb80 RBX: 0000000000000003 RCX: 0000000000000003
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671929] RDX: 0000000000000000 RSI: ffff996fc6784000 RDI: ffff997322760000
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671947] RBP: ffffb2f3c52978f0 R08: 0000000000000018 R09: 0000000000000000
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671966] R10: 0000000000000000 R11: ffffe0a20e9f6d20 R12: ffff99710fcd8000
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671984] R13: ffff9970b1f24e90 R14: 00000000fffb7000 R15: 0000000000008000
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671966] R10: 0000000000000000 R11: ffffe0a20e9f6d20 R12: ffff99710fcd8000
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.671984] R13: ffff9970b1f24e90 R14: 00000000fffb7000 R15: 0000000000008000
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672002] FS: 00007f4719637a80(0000) GS:ffff99733e580000(0000) knlGS:0000000000000000
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672022] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672037] CR2: 0000000000000018 CR3: 00000003b7887000 CR4: 00000000003406e0
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672063] Call Trace:
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672084] gen8_alloc_va_range_3lvl+0xf3/0x9b0 [i915]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672101] ? dequeue_task_fair+0x4ee/0xb20
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672115] ? __switch_to+0x23c/0x530
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672135] gen8_alloc_va_range+0x23e/0x490 [i915]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672160] i915_vma_bind+0x6a/0x170 [i915]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672182] __i915_vma_do_pin+0x2a5/0x450 [i915]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672205] i915_gem_execbuffer_reserve_vma.isra.31+0x144/0x1b0 [i915]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672231] i915_gem_execbuffer_reserve.isra.32+0x388/0x3b0 [i915]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672256] i915_gem_do_execbuffer.isra.38+0x4f7/0x1570 [i915]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672273] ? radix_tree_lookup_slot+0x22/0x50
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672287] ? find_get_entry+0x20/0x110
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672307] i915_gem_execbuffer2+0xa2/0x1e0 [i915]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672326] drm_ioctl+0x21b/0x4d0 [drm]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672339] ? file_update_time+0xc8/0x110
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672360] ? i915_gem_execbuffer+0x310/0x310 [i915]
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672375] do_vfs_ioctl+0xa1/0x5f0
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672387] ? __do_page_fault+0x265/0x4e0
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672399] SyS_ioctl+0x79/0x90
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672411] entry_SYSCALL_64_fastpath+0x1e/0xad
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672423] RIP: 0033:0x7f4711781357
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672434] RSP: 002b:00007ffef1c0b698 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672453] RAX: ffffffffffffffda RBX: 000039c6e03fa028 RCX: 00007f4711781357
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672471] RDX: 00007ffef1c0b6e0 RSI: 0000000040406469 RDI: 000000000000000f
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672489] RBP: 0000000000101001 R08: 000039c6dfe47c80 R09: 0000000000000000
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672507] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672525] R13: 00000000000001e7 R14: 00000000051e59a0 R15: 0000000000000020
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672543] Code: 20 03 00 00 48 8b b8 d8 02 00 00 48 8b 52 08 48 83 ca 03 e8 1f cd ff ff 48 8b 45 a8 4c 8b 45 c8 48 8b 4d c0 48 8b 10 48 8b 45 d0 <4e> 89 24 02 48 0f ab 08 0f 1f 44 00 00 e9 44 ff ff ff 81 fb 00
Jun 16 00:55:13 adept-XPS-13-9360 kernel: [155563.672612] RIP: gen8_ppgtt_alloc_page_directories.isra.38+0x124/0x270 [i915] RSP: ffffb2f3c5297890