*** This bug is a duplicate of bug 1680904 ***
https://bugs.launchpad.net/bugs/1680904
I am getting this error randomly every once in a while. It's locking my
PC completely but it's not stopping Spotify playing. Machine can not be
restarted in any way even trough SSH session (SSH still works). Her is
last error
Jun 2 09:47:04 pc-name kernel: [109842.746855] BUG: unable to handle kernel
NULL pointer dereference at 0000000000000018
Jun 2 09:47:04 pc-name kernel: [109842.746917] IP:
gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915]
Jun 2 09:47:04 pc-name kernel: [109842.746939] PGD 0
Jun 2 09:47:04 pc-name kernel: [109842.746940]
Jun 2 09:47:04 pc-name kernel: [109842.746953] Oops: 0002 [#1] SMP
Jun 2 09:47:04 pc-name kernel: [109842.746965] Modules linked in: arc4
ppp_mppe ppp_async nf_conntrack_pptp nf_conntrack_proto_gre ipheth bnep
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
binfmt_misc snd_hda_codec_hdmi dell_wmi sparse_keymap dell_led dell_smbios
snd_hda_codec_realtek snd_hda_codec_generic dcdbas joydev intel_rapl
x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel input_leds pcbc snd_hda_intel
snd_hda_codec snd_hda_core snd_hwdep snd_pcm aesni_intel aes_x86_64 crypto_simd
glue_helper cryptd intel_cstate intel_rapl_perf snd_seq_midi snd_seq_midi_event
snd_rawmidi serio_raw snd_seq
Jun 2 09:47:04 pc-name kernel: [109842.747160] snd_seq_device snd_timer snd
soundcore mei_me shpchp mei intel_pch_thermal hci_uart btbcm btqca btintel
bluetooth intel_lpss_acpi intel_lpss acpi_als kfifo_buf acpi_pad mac_hid
industrialio parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic
usbhid i915 i2c_algo_bit drm_kms_helper syscopyarea psmouse sysfillrect
sysimgblt fb_sys_fops r8169 drm ahci mii libahci wmi video pinctrl_sunrisepoint
pinctrl_intel i2c_hid hid fjes
Jun 2 09:47:04 pc-name kernel: [109842.747303] CPU: 1 PID: 4421 Comm: chrome
Not tainted 4.10.0-21-generic #23-Ubuntu
Jun 2 09:47:04 pc-name kernel: [109842.747324] Hardware name: Dell Inc.
OptiPlex 3040/05XGC8, BIOS 1.3.5 01/26/2016
Jun 2 09:47:04 pc-name kernel: [109842.747345] task: ffffa071225d4500
task.stack: ffffabc743844000
Jun 2 09:47:04 pc-name kernel: [109842.747377] RIP:
0010:gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915]
Jun 2 09:47:04 pc-name kernel: [109842.747399] RSP: 0018:ffffabc743847880
EFLAGS: 00010246
Jun 2 09:47:04 pc-name kernel: [109842.747414] RAX: ffffa07036de6840 RBX:
0000000000000003 RCX: 0000000000000003
Jun 2 09:47:04 pc-name kernel: [109842.747434] RDX: 0000000000000000 RSI:
ffffa070cc571000 RDI: ffffa07204388000
Jun 2 09:47:04 pc-name kernel: [109842.747453] RBP: ffffabc7438478d8 R08:
0000000000000000 R09: 0000000000000000
Jun 2 09:47:04 pc-name kernel: [109842.747473] R10: 0000000000000000 R11:
0000000000000001 R12: ffffa07058c28000
Jun 2 09:47:04 pc-name kernel: [109842.747493] R13: ffffa071901bb290 R14:
00000000ff790000 R15: 0000000000008000
Jun 2 09:47:04 pc-name kernel: [109842.747513] FS: 00007f64e6a8c480(0000)
GS:ffffa07216c80000(0000) knlGS:0000000000000000
Jun 2 09:47:04 pc-name kernel: [109842.747536] CS: 0010 DS: 0000 ES: 0000
CR0: 0000000080050033
Jun 2 09:47:04 pc-name kernel: [109842.747553] CR2: 0000000000000018 CR3:
00000001c4ebd000 CR4: 00000000003406e0
Jun 2 09:47:04 pc-name kernel: [109842.747574] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Jun 2 09:47:04 pc-name kernel: [109842.747594] DR3: 0000000000000000 DR6:
00000000fffe0ff0 DR7: 0000000000000400
Jun 2 09:47:04 pc-name kernel: [109842.747613] Call Trace:
Jun 2 09:47:04 pc-name kernel: [109842.747638]
gen8_alloc_va_range_3lvl+0xfb/0x9e0 [i915]
Jun 2 09:47:04 pc-name kernel: [109842.747656] ?
__alloc_pages_nodemask+0x209/0x260
Jun 2 09:47:04 pc-name kernel: [109842.747683]
gen8_alloc_va_range+0x23d/0x470 [i915]
Jun 2 09:47:04 pc-name kernel: [109842.747712] i915_vma_bind+0x7e/0x170 [i915]
Jun 2 09:47:04 pc-name kernel: [109842.747739] __i915_vma_do_pin+0x2a5/0x450
[i915]
Jun 2 09:47:04 pc-name kernel: [109842.747782]
i915_gem_execbuffer_reserve_vma.isra.31+0x144/0x1b0 [i915]
Jun 2 09:47:04 pc-name kernel: [109842.747821]
i915_gem_execbuffer_reserve.isra.32+0x39e/0x3d0 [i915]
Jun 2 09:47:04 pc-name kernel: [109842.747851]
i915_gem_do_execbuffer.isra.38+0x4ca/0x15c0 [i915]
Jun 2 09:47:04 pc-name kernel: [109842.747869] ? wake_up_q+0x44/0x80
Jun 2 09:47:04 pc-name kernel: [109842.747891]
i915_gem_execbuffer2+0xa1/0x1e0 [i915]
Jun 2 09:47:04 pc-name kernel: [109842.747916] drm_ioctl+0x21b/0x4c0 [drm]
Jun 2 09:47:04 pc-name kernel: [109842.747940] ?
i915_gem_execbuffer+0x310/0x310 [i915]
Jun 2 09:47:04 pc-name kernel: [109842.747955] ? __seccomp_filter+0x67/0x250
Jun 2 09:47:04 pc-name kernel: [109842.747969] do_vfs_ioctl+0xa3/0x610
Jun 2 09:47:04 pc-name kernel: [109842.747981] ? __secure_computing+0x3f/0xd0
Jun 2 09:47:04 pc-name kernel: [109842.747996] ?
syscall_trace_enter+0xcd/0x2e0
Jun 2 09:47:04 pc-name kernel: [109842.748009] SyS_ioctl+0x79/0x90
Jun 2 09:47:04 pc-name kernel: [109842.748020] do_syscall_64+0x5b/0xc0
Jun 2 09:47:04 pc-name kernel: [109842.748034]
entry_SYSCALL64_slow_path+0x25/0x25
Jun 2 09:47:04 pc-name kernel: [109842.748048] RIP: 0033:0x7f64e0133987
Jun 2 09:47:04 pc-name kernel: [109842.748059] RSP: 002b:00007fff8f0824c8
EFLAGS: 00000246 ORIG_RAX: 0000000000000010
Jun 2 09:47:04 pc-name kernel: [109842.748080] RAX: ffffffffffffffda RBX:
000020bb894c1800 RCX: 00007f64e0133987
Jun 2 09:47:04 pc-name kernel: [109842.748100] RDX: 00007fff8f082510 RSI:
00000000c0406469 RDI: 000000000000000e
Jun 2 09:47:04 pc-name kernel: [109842.748120] RBP: 00007fff8f082510 R08:
0000000000000000 R09: 0000000000000000
Jun 2 09:47:04 pc-name kernel: [109842.748141] R10: 0000000000000050 R11:
0000000000000246 R12: 00000000c0406469
Jun 2 09:47:04 pc-name kernel: [109842.748160] R13: 000000000000000e R14:
0000000000000000 R15: 0000000000000000
Jun 2 09:47:04 pc-name kernel: [109842.748180] 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 aa 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
Jun 2 09:47:04 pc-name kernel: [109842.748260] RIP:
gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250 [i915] RSP:
ffffabc743847880
Jun 2 09:47:04 pc-name kernel: [109842.748311] CR2: 0000000000000018
Jun 2 09:47:04 pc-name kernel: [109842.760424] ---[ end trace 9547779acc7887ce
]---
uname -a:
Linux pc-name 4.10.0-21-generic #23-Ubuntu SMP Fri Apr 28 16:14:22 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux
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https://bugs.launchpad.net/bugs/1677673
Title:
System soft-freezes, BUG: unable to handle kernel NULL pointer
dereference at 0000000000000018 in journalctl at
gen8_ppgtt_alloc_page_directories.isra.38+0x115/0x250
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