https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_4428/shard-kbl3/igt@drv_selftest@live_gtt.html

[  168.572853] ------------[ cut here ]------------
[  168.572858] list_add corruption. prev->next should be next (ffff88026a788a90), but was 6b6b6b6b6b6b6b6b. (prev=ffff88023fc18108).
[  168.572878] WARNING: CPU: 3 PID: 5641 at lib/list_debug.c:28 __list_add_valid+0x4d/0x70
[  168.572885] Modules linked in: i915(+) snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul snd_hda_codec snd_hwdep ghash_clmulni_intel snd_hda_core btusb btrtl btbcm btintel snd_pcm bluetooth e1000e mei_me ecdh_generic mei prime_numbers [last unloaded: i915]
[  168.572924] CPU: 3 PID: 5641 Comm: drv_selftest Tainted: G     U            4.18.0-rc3-CI-CI_DRM_4428+ #1
[  168.572932] Hardware name:  /NUC7i5BNB, BIOS BNKBL357.86A.0054.2017.1025.1822 10/25/2017
[  168.572939] RIP: 0010:__list_add_valid+0x4d/0x70
[  168.572943] Code: c3 48 89 d1 48 c7 c7 90 6d 0d 82 48 89 c2 e8 3a b2 be ff 0f 0b 31 c0 c3 48 89 c1 4c 89 c6 48 c7 c7 e0 6d 0d 82 e8 23 b2 be ff <0f> 0b 31 c0 c3 48 89 f2 4c 89 c1 48 89 fe 48 c7 c7 30 6e 0d 82 e8 
[  168.572991] RSP: 0000:ffffc900002d7958 EFLAGS: 00010286
[  168.572997] RAX: 0000000000000000 RBX: ffff880064a12158 RCX: 0000000000000001
[  168.573003] RDX: 0000000080000001 RSI: ffffffff820c638c RDI: 00000000ffffffff
[  168.573008] RBP: ffff88026a780000 R08: 0000000000000000 R09: 0000000000000000
[  168.573014] R10: ffffc900002d7920 R11: ffffffff82244838 R12: ffff88023fc18108
[  168.573020] R13: ffff880064a12258 R14: ffff88026a788a90 R15: 0000000000000000
[  168.573026] FS:  00007f5882afd980(0000) GS:ffff88027ed80000(0000) knlGS:0000000000000000
[  168.573033] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  168.573038] CR2: 00007f1dac191187 CR3: 00000002614de003 CR4: 00000000003606e0
[  168.573044] Call Trace:
[  168.573096]  i915_address_space_init+0xb7/0x130 [i915]
[  168.573134]  gen8_ppgtt_create+0x91/0x580 [i915]
[  168.573169]  i915_ppgtt_create+0x17/0x170 [i915]
[  168.573202]  i915_gem_create_context+0x125/0x2a0 [i915]
[  168.573234]  i915_gem_context_open+0x64/0xe0 [i915]
[  168.573270]  i915_gem_open+0x91/0xc0 [i915]
[  168.573276]  drm_file_alloc+0x163/0x240
[  168.573281]  drm_open+0xa2/0x210
[  168.573286]  ? kmem_cache_alloc_trace+0x209/0x2e0
[  168.573318]  mock_file+0x5f/0xc0 [i915]
[  168.573351]  ? igt_ggtt_lowlevel+0x10/0x10 [i915]
[  168.573384]  exercise_ppgtt+0x34/0x1b0 [i915]
[  168.573416]  ? igt_ppgtt_alloc+0xfb/0x1c0 [i915]
[  168.573457]  __i915_subtests+0x44/0xd0 [i915]
[  168.573497]  __run_selftests+0x10b/0x190 [i915]
[  168.573535]  i915_live_selftests+0x2c/0x60 [i915]
[  168.573567]  i915_pci_probe+0x3b/0x90 [i915]
[  168.573574]  pci_device_probe+0xa1/0x130
[  168.573580]  driver_probe_device+0x306/0x480
[  168.573585]  __driver_attach+0xdb/0x100
[  168.573589]  ? driver_probe_device+0x480/0x480
[  168.573594]  ? driver_probe_device+0x480/0x480
[  168.573599]  bus_for_each_dev+0x74/0xc0
[  168.573605]  bus_add_driver+0x15f/0x250
[  168.573609]  ? 0xffffffffa01a9000
[  168.573614]  driver_register+0x56/0xe0
[  168.573618]  ? 0xffffffffa01a9000
[  168.573622]  do_one_initcall+0x58/0x370
[  168.573627]  ? kmem_cache_alloc_trace+0x209/0x2e0
[  168.573634]  do_init_module+0x56/0x1ea
[  168.573640]  load_module+0x2435/0x2b20
[  168.573649]  ? __se_sys_finit_module+0xd3/0xf0
[  168.573654]  __se_sys_finit_module+0xd3/0xf0
[  168.573661]  do_syscall_64+0x55/0x190
[  168.573666]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  168.573671] RIP: 0033:0x7f58823c9839
[  168.573675] Code: Bad RIP value.
[  168.573682] RSP: 002b:00007ffc49817c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[  168.573689] RAX: ffffffffffffffda RBX: 00005620ade10ea0 RCX: 00007f58823c9839
[  168.573695] RDX: 0000000000000000 RSI: 00005620ade11c60 RDI: 0000000000000004
[  168.573701] RBP: 00005620ade11c60 R08: 0000000000000004 R09: 0000000000000000
[  168.573707] R10: 00007ffc49817de0 R11: 0000000000000246 R12: 0000000000000000
[  168.573712] R13: 00005620ade07c00 R14: 0000000000000000 R15: 0000000000000037
[  168.573721] irq event stamp: 0
[  168.573725] hardirqs last  enabled at (0): [<0000000000000000>]           (null)
[  168.573732] hardirqs last disabled at (0): [<ffffffff81082192>] copy_process.part.7+0x322/0x1db0
[  168.573739] softirqs last  enabled at (0): [<ffffffff81082192>] copy_process.part.7+0x322/0x1db0
[  168.573746] softirqs last disabled at (0): [<0000000000000000>]           (null)
[  168.573754] WARNING: CPU: 3 PID: 5641 at lib/list_debug.c:28 __list_add_valid+0x4d/0x70
[  168.573760] ---[ end trace 892b2e8fb1ba868e ]---