Attachment 115051 Details for Bug 87729 – dmesg info on bsw

dmesg info on bsw

dmesg_threads.txt (text/plain), 123.24 KB, created by ye.tian on 2015-04-13 09:25:36 UTC

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Creator: ye.tian

Created: 2015-04-13 09:25:36 UTC

Size: 123.24 KB

patch

obsolete

>[ 1966.639117]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.639166]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.639216]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.639267]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.639299]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.639331]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.639365]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.639371]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.639377]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.639382]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.639388]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.639394]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.639400]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.639406]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.639438]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.639488]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.639529]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.639535]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.639567]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.639607]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.639639]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.639680]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.639687]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.639692]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.639698]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.639728]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.639743]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.639773]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.639779]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.639784]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.639791]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.639796]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.639801]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.639807]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.639812]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.639816] ---[ end trace 045490b4de698de4 ]---
>[ 1966.639819] ------------[ cut here ]------------
>[ 1966.639848] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.639851] WARN_ON(!pd->page_table[pde])
>[ 1966.639853] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.639885] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.639888]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.639893]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.639899]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.639904] Call Trace:
>[ 1966.639910]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.639916]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.639946]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.639952]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.639983]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.640013]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.640045]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.640076]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.640139]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.640190]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.640216]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.640244]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.640265]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.640271]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.640277]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.640283]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.640289]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.640319]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.640349]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.640381]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.640387]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.640419]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.640449]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.640479]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.640509]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.640515]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.640533]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.640562]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.640598]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.640613]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.640643]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.640649]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.640655]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.640661]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.640666]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.640671]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.640677]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.640683]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.640687] ---[ end trace 045490b4de698de5 ]---
>[ 1966.640707] ------------[ cut here ]------------
>[ 1966.640752] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.640762] WARN_ON(!pd->page_table[pde])
>[ 1966.640764] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.640796] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.640799]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.640804]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.640809]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.640815] Call Trace:
>[ 1966.640821]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.640827]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.640857]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.640887]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.640927]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.640957]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.640989]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.641021]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.641066]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.641107]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.641122]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.641128]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.641134]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.641140]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.641161]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.641167]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.641173]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.641205]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.641245]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.641282]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.641288]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.641320]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.641350]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.641379]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.641410]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.641416]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.641421]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.641427]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.641457]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.641472]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.641502]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.641508]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.641513]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.641519]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.641524]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.641530]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.641535]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.641541]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.641545] ---[ end trace 045490b4de698de6 ]---
>[ 1966.641547] ------------[ cut here ]------------
>[ 1966.641577] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.641580] WARN_ON(!pd->page_table[pde])
>[ 1966.641582] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.641614] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.641617]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.641622]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.641627]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.641633] Call Trace:
>[ 1966.641639]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.641645]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.641675]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.641681]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.641711]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.641741]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.641773]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.641805]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.641837]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.641870]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.641876]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.641882]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.641888]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.641894]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.641899]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.641905]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.641912]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.641942]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.641972]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.642003]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.642009]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.642041]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.642071]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.642130]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.642179]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.642204]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.642228]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.642253]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.642303]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.642332]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.642362]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.642368]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.642374]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.642380]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.642385]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.642391]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.642396]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.642402]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.642406] ---[ end trace 045490b4de698de7 ]---
>[ 1966.642408] ------------[ cut here ]------------
>[ 1966.642438] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.642441] WARN_ON(!pd->page_table[pde])
>[ 1966.642443] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.642475] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.642478]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.642483]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.642488]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.642494] Call Trace:
>[ 1966.642500]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.642506]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.642536]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.642542]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.642573]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.642603]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.642635]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.642668]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.642720]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.642770]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.642799]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.642816]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.642822]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.642828]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.642834]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.642840]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.642846]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.642876]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.642907]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.642938]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.642944]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.642976]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.643006]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.643037]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.643088]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.643113]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.643122]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.643128]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.643158]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.643174]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.643203]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.643209]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.643215]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.643221]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.643226]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.643241]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.643269]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.643274]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.643278] ---[ end trace 045490b4de698de8 ]---
>[ 1966.643281] ------------[ cut here ]------------
>[ 1966.643311] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.643313] WARN_ON(!pd->page_table[pde])
>[ 1966.643315] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.643367] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.643370]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.643376]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.643381]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.643400] Call Trace:
>[ 1966.643406]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.643412]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.643442]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.643462]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.643494]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.643534]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.643566]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.643598]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.643630]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.643663]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.643669]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.643675]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.643681]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.643686]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.643692]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.643698]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.643705]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.643735]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.643765]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.643796]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.643802]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.643834]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.643864]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.643894]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.643924]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.643930]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.643935]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.643941]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.643971]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.643986]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.644016]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.644022]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.644027]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.644033]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.644039]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.644044]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.644049]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.644055]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.644058] ---[ end trace 045490b4de698de9 ]---
>[ 1966.644061] ------------[ cut here ]------------
>[ 1966.644091] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.644121] WARN_ON(!pd->page_table[pde])
>[ 1966.644133] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.644234] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.644237]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.644243]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.644248]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.644253] Call Trace:
>[ 1966.644260]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.644266]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.644296]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.644303]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.644333]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.644363]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.644395]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.644427]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.644461]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.644513]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.644536]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.644542]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.644548]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.644554]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.644560]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.644566]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.644572]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.644602]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.644633]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.644665]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.644693]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.644734]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.644764]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.644795]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.644836]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.644843]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.644848]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.644867]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.644897]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.644919]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.644949]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.644963]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.644968]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.644974]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.644980]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.644997]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.645003]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.645009]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.645012] ---[ end trace 045490b4de698dea ]---
>[ 1966.645015] ------------[ cut here ]------------
>[ 1966.645046] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.645064] WARN_ON(!pd->page_table[pde])
>[ 1966.645076] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.645109] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.645112]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.645118]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.645124]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.645130] Call Trace:
>[ 1966.645162]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.645168]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.645198]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.645205]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.645249]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.645280]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.645312]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.645343]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.645376]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.645408]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.645415]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.645420]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.645426]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.645432]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.645438]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.645444]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.645450]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.645480]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.645510]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.645541]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.645547]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.645579]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.645609]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.645639]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.645669]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.645675]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.645681]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.645687]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.645716]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.645732]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.645761]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.645767]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.645773]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.645779]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.645784]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.645789]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.645795]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.645800]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.645804] ---[ end trace 045490b4de698deb ]---
>[ 1966.645807] ------------[ cut here ]------------
>[ 1966.645836] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.645839] WARN_ON(!pd->page_table[pde])
>[ 1966.645841] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.645873] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.645876]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.645881]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.645886]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.645892] Call Trace:
>[ 1966.645898]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.645904]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.645934]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.645940]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.645970]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.646000]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.646032]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.646064]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.646110]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.646165]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.646191]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.646218]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.646242]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.646266]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.646293]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.646315]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.646322]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.646352]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.646382]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.646414]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.646419]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.646452]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.646482]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.646511]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.646542]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.646548]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.646553]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.646559]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.646589]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.646604]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.646634]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.646640]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.646646]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.646670]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.646698]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.646712]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.646718]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.646723]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.646727] ---[ end trace 045490b4de698dec ]---
>[ 1966.646730] ------------[ cut here ]------------
>[ 1966.646760] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.646762] WARN_ON(!pd->page_table[pde])
>[ 1966.646764] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.646797] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.646801]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.646838]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.646844]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.646849] Call Trace:
>[ 1966.646855]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.646861]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.646891]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.646897]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.646929]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.646983]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.647017]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.647049]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.647082]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.647125]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.647142]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.647148]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.647154]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.647159]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.647165]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.647188]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.647194]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.647224]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.647254]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.647297]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.647303]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.647337]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.647377]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.647407]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.647445]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.647451]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.647457]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.647463]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.647493]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.647508]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.647537]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.647543]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.647549]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.647555]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.647560]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.647565]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.647571]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.647576]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.647580] ---[ end trace 045490b4de698ded ]---
>[ 1966.647583] ------------[ cut here ]------------
>[ 1966.647613] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.647615] WARN_ON(!pd->page_table[pde])
>[ 1966.647617] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.647651] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.647654]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.647659]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.647664]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.647669] Call Trace:
>[ 1966.647675]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.647682]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.647711]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.647718]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.647748]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.647778]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.647810]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.647842]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.647874]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.647907]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.647913]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.647919]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.647925]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.647930]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.647936]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.647942]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.647948]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.647978]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.648009]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.648040]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.648046]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.648078]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.648136]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.648185]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.648234]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.648258]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.648282]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.648311]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.648345]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.648360]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.648389]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.648396]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.648401]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.648407]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.648412]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.648418]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.648424]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.648429]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.648433] ---[ end trace 045490b4de698dee ]---
>[ 1966.648435] ------------[ cut here ]------------
>[ 1966.648465] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.648468] WARN_ON(!pd->page_table[pde])
>[ 1966.648470] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.648502] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.648505]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.648510]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.648515]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.648521] Call Trace:
>[ 1966.648527]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.648533]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.648563]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.648569]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.648600]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.648631]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.648684]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.648734]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.648788]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.648830]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.648836]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.648842]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.648848]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.648854]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.648860]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.648866]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.648872]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.648902]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.648933]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.648964]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.648970]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.649002]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.649046]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.649095]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.649134]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.649145]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.649150]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.649156]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.649186]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.649201]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.649231]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.649237]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.649243]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.649266]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.649281]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.649286]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.649292]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.649298]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.649301] ---[ end trace 045490b4de698def ]---
>[ 1966.649304] ------------[ cut here ]------------
>[ 1966.649334] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.649350] WARN_ON(!pd->page_table[pde])
>[ 1966.649359] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.649391] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.649394]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.649405]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.649422]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.649427] Call Trace:
>[ 1966.649433]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.649440]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.649471]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.649491]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.649521]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.649560]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.649592]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.649624]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.649656]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.649689]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.649695]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.649701]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.649707]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.649713]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.649718]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.649724]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.649731]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.649761]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.649791]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.649822]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.649828]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.649860]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.649890]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.649920]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.649950]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.649956]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.649961]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.649968]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.649997]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.650012]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.650042]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.650048]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.650054]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.650060]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.650065]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.650070]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.650088]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.650112]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.650126] ---[ end trace 045490b4de698df0 ]---
>[ 1966.650138] ------------[ cut here ]------------
>[ 1966.650181] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.650194] WARN_ON(!pd->page_table[pde])
>[ 1966.650206] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.650255] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.650258]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.650264]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.650269]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.650274] Call Trace:
>[ 1966.650280]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.650287]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.650317]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.650323]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.650354]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.650384]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.650416]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.650459]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.650510]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.650547]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.650553]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.650559]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.650565]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.650571]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.650576]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.650583]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.650589]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.650619]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.650650]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.650702]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.650712]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.650745]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.650775]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.650805]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.650835]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.650855]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.650860]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.650866]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.650896]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.650911]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.650958]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.650967]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.650973]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.650979]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.650984]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.650989]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.650995]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.651001]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.651016] ---[ end trace 045490b4de698df1 ]---
>[ 1966.651033] ------------[ cut here ]------------
>[ 1966.651066] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.651069] WARN_ON(!pd->page_table[pde])
>[ 1966.651079] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.651125] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.651128]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.651133]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.651149]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.651154] Call Trace:
>[ 1966.651160]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.651167]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.651212]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.651219]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.651255]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.651287]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.651327]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.651359]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.651391]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.651424]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.651430]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.651436]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.651441]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.651447]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.651453]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.651459]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.651465]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.651495]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.651526]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.651557]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.651563]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.651595]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.651625]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.651655]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.651685]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.651691]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.651696]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.651702]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.651732]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.651747]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.651777]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.651783]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.651788]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.651794]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.651800]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.651805]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.651810]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.651816]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.651820] ---[ end trace 045490b4de698df2 ]---
>[ 1966.651822] ------------[ cut here ]------------
>[ 1966.651852] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.651855] WARN_ON(!pd->page_table[pde])
>[ 1966.651856] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.651888] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.651891]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.651897]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.651902]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.651907] Call Trace:
>[ 1966.651913]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.651920]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.651949]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.651956]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.651986]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.652016]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.652048]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.652080]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.652142]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.652194]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.652220]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.652247]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.652270]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.652300]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.652318]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.652325]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.652331]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.652361]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.652392]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.652423]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.652429]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.652461]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.652491]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.652521]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.652551]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.652558]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.652563]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.652569]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.652599]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.652614]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.652644]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.652650]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.652656]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.652662]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.652667]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.652672]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.652678]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.652683]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.652687] ---[ end trace 045490b4de698df3 ]---
>[ 1966.652690] ------------[ cut here ]------------
>[ 1966.652720] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.652736] WARN_ON(!pd->page_table[pde])
>[ 1966.652751] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.652835] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.652838]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.652843]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.652848]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.652854] Call Trace:
>[ 1966.652860]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.652866]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.652896]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.652902]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.652933]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.652963]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.652996]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.653047]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.653092]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.653134]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.653140]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.653146]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.653152]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.653157]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.653163]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.653169]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.653176]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.653207]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.653260]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.653297]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.653303]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.653335]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.653367]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.653410]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.653446]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.653453]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.653458]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.653464]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.653494]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.653509]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.653538]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.653544]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.653550]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.653556]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.653561]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.653567]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.653572]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.653578]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.653581] ---[ end trace 045490b4de698df4 ]---
>[ 1966.653584] ------------[ cut here ]------------
>[ 1966.653614] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.653616] WARN_ON(!pd->page_table[pde])
>[ 1966.653618] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.653650] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.653653]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.653659]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.653664]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.653669] Call Trace:
>[ 1966.653675]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.653682]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.653711]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.653718]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.653748]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.653778]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.653810]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.653842]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.653874]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.653907]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.653913]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.653919]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.653925]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.653930]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.653936]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.653942]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.653948]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.653978]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.654008]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.654040]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.654046]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.654078]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.654128]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.654177]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.654225]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.654251]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.654274]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.654299]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.654343]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.654358]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.654388]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.654394]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.654400]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.654406]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.654411]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.654416]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.654422]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.654428]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.654431] ---[ end trace 045490b4de698df5 ]---
>[ 1966.654434] ------------[ cut here ]------------
>[ 1966.654464] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.654467] WARN_ON(!pd->page_table[pde])
>[ 1966.654468] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.654501] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.654504]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.654509]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.654514]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.654519] Call Trace:
>[ 1966.654525]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.654532]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.654562]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.654568]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.654599]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.654629]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.654662]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.654712]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.654763]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.654819]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.654834]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.654840]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.654846]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.654851]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.654857]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.654863]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.654870]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.654900]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.654930]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.654962]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.654967]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.655000]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.655030]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.655060]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.655109]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.655139]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.655152]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.655158]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.655188]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.655203]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.655233]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.655239]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.655245]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.655251]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.655256]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.655261]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.655267]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.655272]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.655276] ---[ end trace 045490b4de698df6 ]---
>[ 1966.655279] ------------[ cut here ]------------
>[ 1966.655310] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.655326] WARN_ON(!pd->page_table[pde])
>[ 1966.655338] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.655389] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.655392]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.655397]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.655403]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.655408] Call Trace:
>[ 1966.655414]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.655420]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.655450]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.655457]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.655489]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.655537]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.655579]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.655611]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.655643]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.655678]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.655695]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.655701]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.655707]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.655712]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.655718]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.655724]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.655747]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.655777]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.655808]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.655850]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.655856]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.655888]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.655918]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.655948]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.655978]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.655984]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.655990]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.655996]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.656026]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.656041]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.656070]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.656088]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.656106]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.656134]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.656142]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.656148]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.656153]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.656159]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.656163] ---[ end trace 045490b4de698df7 ]---
>[ 1966.656165] ------------[ cut here ]------------
>[ 1966.656195] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.656198] WARN_ON(!pd->page_table[pde])
>[ 1966.656200] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.656232] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.656248]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.656269]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.656274]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.656280] Call Trace:
>[ 1966.656286]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.656292]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.656322]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.656329]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.656383]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.656414]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.656455]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.656487]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.656519]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.656552]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.656558]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.656564]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.656570]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.656575]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.656581]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.656587]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.656593]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.656623]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.656654]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.656685]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.656691]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.656723]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.656753]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.656782]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.656813]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.656819]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.656824]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.656830]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.656860]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.656875]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.656905]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.656911]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.656916]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.656922]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.656927]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.656933]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.656938]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.656944]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.656947] ---[ end trace 045490b4de698df8 ]---
>[ 1966.656950] ------------[ cut here ]------------
>[ 1966.656980] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.656982] WARN_ON(!pd->page_table[pde])
>[ 1966.656984] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.657016] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.657019]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.657024]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.657030]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.657035] Call Trace:
>[ 1966.657041]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.657047]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.657077]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.657111]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.657161]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.657211]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.657261]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.657311]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.657363]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.657396]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.657402]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.657408]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.657414]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.657420]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.657426]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.657432]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.657438]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.657468]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.657499]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.657530]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.657536]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.657568]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.657598]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.657628]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.657660]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.657686]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.657710]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.657721]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.657751]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.657766]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.657796]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.657802]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.657807]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.657814]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.657838]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.657843]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.657849]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.657855]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.657858] ---[ end trace 045490b4de698df9 ]---
>[ 1966.657861] ------------[ cut here ]------------
>[ 1966.657891] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.657893] WARN_ON(!pd->page_table[pde])
>[ 1966.657895] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.657954] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.657957]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.657962]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.657968]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.657991] Call Trace:
>[ 1966.657996]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.658003]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.658033]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.658039]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.658070]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.658111]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.658162]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.658194]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.658234]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.658267]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.658273]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.658279]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.658285]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.658291]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.658296]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.658303]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.658309]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.658339]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.658369]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.658400]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.658406]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.658438]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.658468]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.658498]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.658528]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.658534]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.658540]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.658546]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.658575]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.658590]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.658620]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.658626]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.658632]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.658638]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.658643]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.658648]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.658654]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.658659]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.658663] ---[ end trace 045490b4de698dfa ]---
>[ 1966.658667] ------------[ cut here ]------------
>[ 1966.658697] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.658699] WARN_ON(!pd->page_table[pde])
>[ 1966.658701] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.658733] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.658736]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.658742]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.658747]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.658752] Call Trace:
>[ 1966.658758]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.658765]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.658794]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.658801]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.658831]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.658861]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.658893]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.658925]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.658957]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.658990]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.658996]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.659002]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.659008]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.659013]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.659019]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.659025]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.659031]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.659061]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.659091]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.659152]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.659177]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.659229]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.659277]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.659325]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.659374]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.659400]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.659426]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.659432]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.659462]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.659477]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.659507]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.659513]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.659518]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.659525]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.659530]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.659535]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.659541]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.659546]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.659550] ---[ end trace 045490b4de698dfb ]---
>[ 1966.659553] ------------[ cut here ]------------
>[ 1966.659583] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.659585] WARN_ON(!pd->page_table[pde])
>[ 1966.659587] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.659619] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.659622]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.659628]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.659633]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.659638] Call Trace:
>[ 1966.659644]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.659651]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.659680]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.659687]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.659717]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.659747]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.659779]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.659812]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.659844]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.659890]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.659915]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.659943]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.659968]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.659988]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.659993]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.660000]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.660006]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.660036]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.660066]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.660098]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.660112]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.660144]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.660174]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.660204]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.660236]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.660267]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.660283]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.660289]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.660319]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.660334]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.660364]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.660370]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.660376]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.660382]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.660387]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.660422]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.660431]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.660437]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.660440] ---[ end trace 045490b4de698dfc ]---
>[ 1966.660443] ------------[ cut here ]------------
>[ 1966.660473] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.660476] WARN_ON(!pd->page_table[pde])
>[ 1966.660478] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.660530] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.660533]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.660538]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.660543]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.660563] Call Trace:
>[ 1966.660569]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.660575]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.660605]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.660624]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.660656]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.660694]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.660726]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.660758]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.660790]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.660823]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.660829]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.660835]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.660841]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.660847]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.660852]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.660859]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.660865]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.660895]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.660925]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.660956]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.660962]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.660994]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.661024]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.661054]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.661084]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.661119]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.661142]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.661166]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.661197]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.661212]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.661241]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.661248]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.661253]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.661259]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.661265]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.661270]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.661276]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.661281]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.661285] ---[ end trace 045490b4de698dfd ]---
>[ 1966.661288] ------------[ cut here ]------------
>[ 1966.661318] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.661330] WARN_ON(!pd->page_table[pde])
>[ 1966.661342] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.661395] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.661398]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.661403]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.661408]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.661414] Call Trace:
>[ 1966.661420]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.661426]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.661456]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.661462]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.661494]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.661543]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.661586]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.661618]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.661651]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.661694]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.661701]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.661707]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.661713]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.661718]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.661724]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.661730]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.661736]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.661766]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.661797]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.661828]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.661834]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.661866]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.661896]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.661925]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.661956]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.661962]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.661967]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.661973]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.662003]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.662018]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.662048]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.662054]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.662059]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.662065]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.662070]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.662076]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.662094]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.662100]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.662104] ---[ end trace 045490b4de698dfe ]---
>[ 1966.662116] ------------[ cut here ]------------
>[ 1966.662157] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.662170] WARN_ON(!pd->page_table[pde])
>[ 1966.662182] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.662254] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.662257]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.662262]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.662267]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.662273] Call Trace:
>[ 1966.662279]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.662285]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.662315]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.662321]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.662352]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.662382]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.662416]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.662466]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.662512]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.662544]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.662551]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.662567]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.662573]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.662578]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.662584]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.662590]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.662597]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.662627]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.662673]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.662705]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.662718]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.662750]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.662781]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.662820]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.662851]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.662857]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.662862]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.662868]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.662898]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.662913]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.662943]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.662949]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.662954]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.662961]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.662966]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.662971]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.662977]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.662982]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.662986] ---[ end trace 045490b4de698dff ]---
>[ 1966.662988] ------------[ cut here ]------------
>[ 1966.663018] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.663020] WARN_ON(!pd->page_table[pde])
>[ 1966.663022] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.663054] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.663057]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.663063]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.663068]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.663073] Call Trace:
>[ 1966.663092]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.663099]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.663148]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.663175]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.663224]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.663264]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.663296]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.663328]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.663361]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.663393]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.663400]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.663417]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.663433]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.663438]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.663444]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.663450]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.663457]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.663487]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.663534]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.663566]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.663577]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.663610]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.663649]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.663680]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.663718]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.663725]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.663730]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.663736]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.663766]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.663781]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.663811]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.663817]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.663822]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.663828]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.663833]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.663839]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.663844]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.663850]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.663853] ---[ end trace 045490b4de698e00 ]---
>[ 1966.663856] ------------[ cut here ]------------
>[ 1966.663886] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.663889] WARN_ON(!pd->page_table[pde])
>[ 1966.663891] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.663923] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.663926]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.663931]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.663936]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.663941] Call Trace:
>[ 1966.663947]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.663954]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.663983]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.663990]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.664020]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.664050]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.664082]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.664144]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.664195]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.664246]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.664273]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.664286]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.664292]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.664298]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.664304]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.664310]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.664317]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.664347]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.664377]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.664408]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.664414]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.664446]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.664476]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.664506]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.664538]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.664567]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.664585]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.664591]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.664621]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.664636]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.664666]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.664672]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.664678]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.664684]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.664689]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.664696]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.664729]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.664740]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.664744] ---[ end trace 045490b4de698e01 ]---
>[ 1966.664747] ------------[ cut here ]------------
>[ 1966.664777] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.664780] WARN_ON(!pd->page_table[pde])
>[ 1966.664782] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.664814] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.664817]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.664845]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.664850]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.664856] Call Trace:
>[ 1966.664862]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.664868]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.664900]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.664923]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.664954]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.664985]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.665028]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.665061]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.665093]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.665151]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.665157]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.665163]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.665169]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.665174]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.665180]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.665187]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.665211]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.665242]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.665272]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.665311]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.665317]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.665349]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.665379]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.665409]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.665439]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.665446]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.665451]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.665457]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.665487]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.665503]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.665533]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.665539]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.665544]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.665551]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.665556]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.665561]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.665567]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.665572]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.665576] ---[ end trace 045490b4de698e02 ]---
>[ 1966.665579] ------------[ cut here ]------------
>[ 1966.665609] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.665611] WARN_ON(!pd->page_table[pde])
>[ 1966.665613] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.665646] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.665649]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.665654]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.665659]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.665665] Call Trace:
>[ 1966.665671]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.665677]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.665707]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.665713]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.665744]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.665774]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.665806]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.665838]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.665870]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.665903]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.665909]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.665915]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.665921]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.665927]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.665933]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.665939]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.665945]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.665975]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.666006]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.666037]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.666043]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.666075]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.666154]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.666202]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.666250]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.666276]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.666300]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.666329]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.666367]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.666382]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.666412]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.666418]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.666424]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.666430]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.666435]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.666441]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.666446]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.666452]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.666456] ---[ end trace 045490b4de698e03 ]---
>[ 1966.666459] ------------[ cut here ]------------
>[ 1966.666489] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.666491] WARN_ON(!pd->page_table[pde])
>[ 1966.666493] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.666526] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.666529]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.666534]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.666539]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.666545] Call Trace:
>[ 1966.666551]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.666557]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.666587]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.666593]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.666624]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.666654]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.666706]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.666756]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.666807]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.666846]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.666853]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.666859]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.666865]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.666870]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.666876]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.666882]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.666889]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.666919]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.666949]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.666981]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.666997]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.667046]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.667077]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.667116]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.667147]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[ 1966.667163]  [<ffffffff817988bd>] ? schedule+0x6b/0x78
>[ 1966.667169]  [<ffffffff81089226>] ? futex_wait+0x139/0x1dc
>[ 1966.667175]  [<ffffffff8110949a>] ? __kmalloc+0x65/0x13d
>[ 1966.667205]  [<ffffffffa0096e0d>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[ 1966.667230]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[ 1966.667260]  [<ffffffffa0096c9f>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[ 1966.667274]  [<ffffffff8105ede9>] ? set_next_entity+0x32/0x55
>[ 1966.667280]  [<ffffffff81060a23>] ? pick_next_task_fair+0xe5/0x3dc
>[ 1966.667286]  [<ffffffff8111dab6>] ? do_vfs_ioctl+0x360/0x424
>[ 1966.667299]  [<ffffffff8108ae09>] ? SyS_futex+0xb7/0x132
>[ 1966.667304]  [<ffffffff8104fad2>] ? task_work_run+0x84/0x96
>[ 1966.667310]  [<ffffffff8111dbc3>] ? SyS_ioctl+0x49/0x7a
>[ 1966.667315]  [<ffffffff8179b172>] ? system_call_fastpath+0x12/0x17
>[ 1966.667328] ---[ end trace 045490b4de698e04 ]---
>[ 1966.667333] ------------[ cut here ]------------
>[ 1966.667364] WARNING: CPU: 1 PID: 4427 at drivers/gpu/drm/i915/i915_gem_gtt.c:548 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[ 1966.667372] WARN_ON(!pd->page_table[pde])
>[ 1966.667374] Modules linked in: dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support snd_hda_intel pcspkr snd_hda_controller serio_raw snd_hda_codec snd_hda_core snd_hwdep i2c_i801 lpc_ich snd_pcm mfd_core snd_timer snd soundcore battery ac acpi_cpufreq i915 button video drm_kms_helper drm
>[ 1966.667413] CPU: 1 PID: 4427 Comm: gem_ctx_thrash Tainted: G        W       4.0.0-rc7_drm-intel-nightly_631c2f_20150411+ #312
>[ 1966.667416]  0000000000000000 0000000000000009 ffffffff817958c7 ffff880072d37508
>[ 1966.667421]  ffffffff8103bd5a 0000000000000009 ffffffffa0098016 0000000000000000
>[ 1966.667435]  0000000002cfb083 0000000000000000 000000000000002d 000000000000000a
>[ 1966.667440] Call Trace:
>[ 1966.667446]  [<ffffffff817958c7>] ? dump_stack+0x40/0x50
>[ 1966.667452]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[ 1966.667482]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.667503]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[ 1966.667534]  [<ffffffffa0097fb0>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[ 1966.667570]  [<ffffffffa0098016>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[ 1966.667602]  [<ffffffffa00a0279>] ? i915_vma_unbind+0x138/0x1e2 [i915]
>[ 1966.667634]  [<ffffffffa00a01f6>] ? i915_vma_unbind+0xb5/0x1e2 [i915]
>[ 1966.667666]  [<ffffffffa00a2a5b>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[ 1966.667699]  [<ffffffffa00a2b31>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[ 1966.667705]  [<ffffffff810de42b>] ? shrink_slab.part.57.constprop.67+0x1d5/0x2b5
>[ 1966.667711]  [<ffffffff810de3fb>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[ 1966.667717]  [<ffffffff810e03d3>] ? shrink_zone+0x67/0x92
>[ 1966.667723]  [<ffffffff810e07b9>] ? do_try_to_free_pages+0x20d/0x241
>[ 1966.667728]  [<ffffffff810e08b9>] ? try_to_free_pages+0xcc/0x108
>[ 1966.667734]  [<ffffffff810d7b90>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[ 1966.667741]  [<ffffffff81104777>] ? alloc_pages_current+0xad/0xca
>[ 1966.667771]  [<ffffffffa0097a13>] ? alloc_pt_single+0x75/0x131 [i915]
>[ 1966.667801]  [<ffffffffa00995b7>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[ 1966.667832]  [<ffffffffa009acf4>] ? i915_vma_bind+0x9e/0x451 [i915]
>[ 1966.667838]  [<ffffffff81355070>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[ 1966.667870]  [<ffffffffa00a09f8>] ? i915_gem_object_do_pin+0x6d5/0x7a8 [i915]
>[ 1966.667900]  [<ffffffffa0094d49>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x65/0x10b [i915]
>[ 1966.667930]  [<ffffffffa009503b>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[ 1966.667962]  [<ffffffffa009569e>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]

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Attachments on bug 87729: 111349 | 112873 | 113312 | 115051 | 117673

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