Attachment 115263 Details for Bug 90136 – dmesg

dmesg

dmesg_skly05_webglc_0422.txt (text/plain), 124.84 KB, created by lu hua on 2015-04-22 08:10:32 UTC

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Creator: lu hua

Created: 2015-04-22 08:10:32 UTC

Size: 124.84 KB

patch

obsolete

>[12816.875516]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.875546]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.875565]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.875573]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.875586]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.875608]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.875621]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.875654]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.875674]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.875681]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.875711]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.875719]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.875728]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.875737]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.875746]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.875755]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.875762]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.875766] ---[ end trace c9f0c31965899e14 ]---
>[12816.875770] ------------[ cut here ]------------
>[12816.875799] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.875803] WARN_ON(!pd->page_table[pde])
>[12816.875806] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.875845] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.875849] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.875852]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.875859]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.875863]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.875868] Call Trace:
>[12816.875874]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.875881]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.875887]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.875909]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.875916]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.875938]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.875959]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.875984]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.876009]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.876032]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.876038]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.876044]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.876049]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.876055]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.876061]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.876067]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.876089]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.876111]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.876136]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.876141]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.876166]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.876188]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.876212]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.876256]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.876277]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.876297]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.876319]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.876348]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.876364]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.876390]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.876410]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.876417]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.876446]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.876453]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.876462]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.876470]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.876478]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.876487]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.876506]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.876518] ---[ end trace c9f0c31965899e15 ]---
>[12816.876521] ------------[ cut here ]------------
>[12816.876550] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.876560] WARN_ON(!pd->page_table[pde])
>[12816.876562] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.876606] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.876611] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.876614]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.876621]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.876628]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.876635] Call Trace:
>[12816.876643]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.876653]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.876661]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.876691]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.876700]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.876731]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.876759]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.876795]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.876822]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.876846]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.876852]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.876858]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.876863]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.876869]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.876875]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.876881]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.876903]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.876924]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.876949]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.876954]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.876979]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.877002]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.877023]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.877044]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.877049]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.877054]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.877061]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.877076]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.877082]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.877103]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.877117]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.877122]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.877143]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.877148]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.877155]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.877161]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.877167]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.877173]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.877178]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.877182] ---[ end trace c9f0c31965899e16 ]---
>[12816.877184] ------------[ cut here ]------------
>[12816.877206] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.877224] WARN_ON(!pd->page_table[pde])
>[12816.877233] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.877339] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.877343] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.877346]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.877353]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.877359]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.877366] Call Trace:
>[12816.877375]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.877384]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.877392]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.877421]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.877430]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.877460]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.877503]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.877544]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.877578]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.877616]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.877625]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.877634]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.877642]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.877650]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.877659]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.877668]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.877699]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.877729]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.877763]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.877769]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.877795]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.877817]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.877838]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.877860]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.877865]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.877870]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.877877]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.877892]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.877898]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.877920]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.877934]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.877939]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.877961]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.877966]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.877973]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.877979]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.877985]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.877991]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.877996]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.878000] ---[ end trace c9f0c31965899e17 ]---
>[12816.878002] ------------[ cut here ]------------
>[12816.878024] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.878026] WARN_ON(!pd->page_table[pde])
>[12816.878028] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.878055] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.878058] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.878060]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.878064]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.878069]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.878074] Call Trace:
>[12816.878079]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.878086]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.878092]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.878113]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.878120]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.878141]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.878162]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.878187]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.878215]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.878259]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.878280]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.878300]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.878319]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.878339]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.878361]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.878374]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.878402]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.878432]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.878465]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.878473]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.878507]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.878539]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.878580]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.878611]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.878619]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.878627]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.878636]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.878657]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.878666]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.878698]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.878718]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.878725]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.878754]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.878762]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.878771]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.878781]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.878789]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.878798]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.878805]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.878809] ---[ end trace c9f0c31965899e18 ]---
>[12816.878812] ------------[ cut here ]------------
>[12816.878834] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.878836] WARN_ON(!pd->page_table[pde])
>[12816.878838] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.878865] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.878868] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.878870]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.878874]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.878879]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.878884] Call Trace:
>[12816.878889]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.878896]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.878902]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.878923]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.878930]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.878951]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.878972]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.878997]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.879022]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.879046]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.879052]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.879057]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.879063]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.879068]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.879074]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.879080]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.879102]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.879124]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.879148]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.879153]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.879179]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.879201]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.879244]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.879280]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.879301]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.879321]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.879343]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.879372]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.879391]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.879418]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.879438]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.879446]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.879476]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.879483]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.879492]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.879501]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.879509]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.879518]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.879525]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.879530] ---[ end trace c9f0c31965899e19 ]---
>[12816.879542] ------------[ cut here ]------------
>[12816.879581] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.879592] WARN_ON(!pd->page_table[pde])
>[12816.879594] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.879633] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.879637] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.879641]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.879648]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.879655]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.879675] Call Trace:
>[12816.879684]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.879693]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.879710]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.879742]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.879752]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.879781]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.879810]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.879845]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.879880]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.879909]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.879916]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.879921]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.879926]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.879932]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.879938]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.879944]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.879966]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.879988]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.880012]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.880017]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.880043]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.880065]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.880087]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.880109]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.880114]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.880119]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.880126]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.880141]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.880147]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.880169]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.880183]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.880188]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.880212]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.880238]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.880260]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.880281]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.880301]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.880307]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.880314]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.880319] ---[ end trace c9f0c31965899e1a ]---
>[12816.880322] ------------[ cut here ]------------
>[12816.880352] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.880356] WARN_ON(!pd->page_table[pde])
>[12816.880358] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.880411] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.880416] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.880419]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.880432]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.880441]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.880451] Call Trace:
>[12816.880460]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.880469]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.880477]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.880506]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.880515]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.880545]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.880574]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.880609]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.880638]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.880662]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.880668]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.880674]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.880679]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.880684]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.880691]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.880697]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.880719]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.880740]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.880765]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.880770]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.880795]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.880817]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.880839]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.880861]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.880866]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.880871]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.880878]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.880893]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.880899]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.880920]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.880935]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.880940]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.880961]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.880966]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.880973]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.880979]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.880985]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.880991]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.880996]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.881000] ---[ end trace c9f0c31965899e1b ]---
>[12816.881002] ------------[ cut here ]------------
>[12816.881023] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.881025] WARN_ON(!pd->page_table[pde])
>[12816.881027] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.881053] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.881056] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.881059]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.881063]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.881067]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.881072] Call Trace:
>[12816.881078]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.881085]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.881091]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.881112]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.881118]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.881139]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.881160]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.881186]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.881213]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.881254]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.881276]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.881296]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.881317]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.881337]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.881358]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.881378]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.881416]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.881447]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.881480]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.881488]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.881522]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.881552]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.881582]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.881623]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.881631]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.881642]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.881654]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.881675]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.881684]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.881715]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.881735]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.881742]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.881772]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.881780]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.881789]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.881797]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.881806]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.881815]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.881822]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.881827] ---[ end trace c9f0c31965899e1c ]---
>[12816.881830] ------------[ cut here ]------------
>[12816.881862] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.881865] WARN_ON(!pd->page_table[pde])
>[12816.881868] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.881905] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.881908] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.881910]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.881914]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.881919]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.881923] Call Trace:
>[12816.881929]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.881936]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.881942]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.881963]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.881970]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.881992]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.882013]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.882039]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.882064]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.882087]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.882093]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.882099]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.882104]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.882110]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.882116]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.882122]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.882144]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.882165]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.882189]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.882194]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.882222]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.882262]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.882298]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.882334]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.882355]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.882375]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.882396]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.882414]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.882422]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.882453]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.882472]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.882479]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.882507]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.882515]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.882525]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.882549]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.882561]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.882569]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.882577]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.882587] ---[ end trace c9f0c31965899e1d ]---
>[12816.882590] ------------[ cut here ]------------
>[12816.882620] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.882629] WARN_ON(!pd->page_table[pde])
>[12816.882632] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.882676] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.882681] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.882685]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.882692]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.882698]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.882705] Call Trace:
>[12816.882713]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.882722]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.882731]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.882761]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.882770]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.882801]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.882830]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.882857]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.882883]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.882907]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.882913]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.882919]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.882924]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.882930]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.882936]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.882942]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.882964]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.882986]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.883011]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.883016]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.883041]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.883064]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.883086]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.883108]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.883114]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.883119]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.883125]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.883140]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.883146]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.883169]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.883183]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.883188]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.883212]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.883238]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.883260]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.883281]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.883303]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.883323]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.883334]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.883338] ---[ end trace c9f0c31965899e1e ]---
>[12816.883340] ------------[ cut here ]------------
>[12816.883369] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.883373] WARN_ON(!pd->page_table[pde])
>[12816.883375] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.883414] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.883419] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.883422]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.883428]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.883434]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.883441] Call Trace:
>[12816.883449]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.883474]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.883493]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.883523]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.883537]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.883567]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.883596]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.883631]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.883665]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.883698]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.883707]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.883716]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.883724]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.883730]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.883736]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.883742]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.883766]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.883787]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.883812]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.883817]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.883842]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.883864]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.883885]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.883907]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.883913]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.883918]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.883924]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.883940]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.883946]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.883967]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.883982]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.883986]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.884008]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.884013]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.884020]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.884026]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.884032]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.884038]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.884043]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.884046] ---[ end trace c9f0c31965899e1f ]---
>[12816.884049] ------------[ cut here ]------------
>[12816.884070] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.884072] WARN_ON(!pd->page_table[pde])
>[12816.884073] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.884100] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.884103] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.884105]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.884110]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.884114]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.884119] Call Trace:
>[12816.884124]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.884131]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.884137]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.884158]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.884164]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.884186]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.884209]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.884254]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.884292]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.884331]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.884351]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.884371]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.884391]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.884410]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.884418]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.884426]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.884456]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.884486]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.884518]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.884526]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.884560]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.884604]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.884633]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.884662]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.884671]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.884679]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.884687]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.884709]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.884718]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.884748]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.884767]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.884775]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.884805]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.884813]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.884823]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.884832]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.884840]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.884849]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.884856]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.884861] ---[ end trace c9f0c31965899e20 ]---
>[12816.884864] ------------[ cut here ]------------
>[12816.884886] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.884888] WARN_ON(!pd->page_table[pde])
>[12816.884890] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.884917] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.884920] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.884922]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.884927]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.884931]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.884936] Call Trace:
>[12816.884942]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.884949]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.884955]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.884975]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.884982]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.885004]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.885024]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.885049]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.885073]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.885096]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.885102]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.885107]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.885113]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.885118]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.885124]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.885130]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.885152]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.885173]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.885197]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.885202]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.885248]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.885284]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.885320]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.885356]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.885376]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.885396]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.885413]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.885432]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.885441]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.885471]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.885490]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.885497]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.885526]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.885534]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.885543]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.885552]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.885577]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.885590]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.885597]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.885602] ---[ end trace c9f0c31965899e21 ]---
>[12816.885605] ------------[ cut here ]------------
>[12816.885635] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.885647] WARN_ON(!pd->page_table[pde])
>[12816.885650] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.885694] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.885699] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.885703]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.885710]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.885716]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.885723] Call Trace:
>[12816.885731]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.885740]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.885749]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.885778]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.885787]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.885817]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.885847]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.885881]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.885906]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.885930]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.885936]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.885941]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.885947]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.885952]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.885958]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.885964]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.885986]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.886008]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.886034]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.886039]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.886064]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.886085]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.886106]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.886128]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.886134]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.886139]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.886146]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.886161]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.886167]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.886189]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.886203]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.886224]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.886261]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.886282]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.886304]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.886325]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.886340]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.886347]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.886353]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.886358] ---[ end trace c9f0c31965899e22 ]---
>[12816.886361] ------------[ cut here ]------------
>[12816.886390] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.886393] WARN_ON(!pd->page_table[pde])
>[12816.886396] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.886434] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.886439] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.886442]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.886449]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.886478]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.886485] Call Trace:
>[12816.886493]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.886503]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.886520]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.886550]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.886563]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.886593]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.886624]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.886659]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.886694]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.886726]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.886736]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.886744]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.886751]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.886757]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.886763]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.886769]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.886792]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.886813]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.886838]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.886843]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.886868]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.886890]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.886911]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.886933]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.886939]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.886944]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.886950]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.886966]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.886972]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.886994]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.887008]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.887013]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.887034]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.887040]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.887046]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.887053]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.887059]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.887065]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.887070]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.887073] ---[ end trace c9f0c31965899e23 ]---
>[12816.887075] ------------[ cut here ]------------
>[12816.887097] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.887099] WARN_ON(!pd->page_table[pde])
>[12816.887101] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.887127] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.887130] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.887132]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.887137]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.887141]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.887146] Call Trace:
>[12816.887152]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.887159]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.887165]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.887186]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.887193]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.887218]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.887257]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.887296]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.887335]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.887371]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.887392]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.887412]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.887430]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.887435]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.887444]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.887452]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.887482]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.887513]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.887546]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.887554]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.887588]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.887634]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.887662]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.887697]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.887705]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.887713]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.887722]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.887745]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.887754]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.887785]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.887804]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.887811]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.887841]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.887850]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.887859]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.887868]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.887876]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.887882]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.887887]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.887891] ---[ end trace c9f0c31965899e24 ]---
>[12816.887893] ------------[ cut here ]------------
>[12816.887915] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.887917] WARN_ON(!pd->page_table[pde])
>[12816.887919] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.887946] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.887949] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.887951]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.887956]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.887961]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.887965] Call Trace:
>[12816.887971]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.887978]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.887984]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.888005]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.888012]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.888034]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.888054]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.888079]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.888104]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.888128]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.888134]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.888139]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.888145]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.888150]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.888156]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.888162]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.888185]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.888208]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.888250]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.888271]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.888310]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.888347]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.888383]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.888419]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.888429]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.888435]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.888443]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.888464]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.888473]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.888504]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.888523]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.888530]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.888558]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.888581]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.888592]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.888601]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.888610]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.888624]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.888634]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.888640] ---[ end trace c9f0c31965899e25 ]---
>[12816.888643] ------------[ cut here ]------------
>[12816.888673] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.888676] WARN_ON(!pd->page_table[pde])
>[12816.888679] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.888719] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.888723] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.888727]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.888734]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.888741]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.888748] Call Trace:
>[12816.888756]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.888765]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.888773]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.888803]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.888813]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.888843]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.888870]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.888896]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.888921]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.888944]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.888950]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.888955]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.888961]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.888966]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.888972]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.888978]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.889001]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.889022]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.889046]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.889052]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.889077]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.889099]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.889120]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.889142]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.889147]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.889152]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.889159]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.889174]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.889180]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.889202]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.889228]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.889248]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.889285]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.889305]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.889327]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.889348]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.889361]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.889368]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.889375]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.889380] ---[ end trace c9f0c31965899e26 ]---
>[12816.889383] ------------[ cut here ]------------
>[12816.889412] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.889416] WARN_ON(!pd->page_table[pde])
>[12816.889418] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.889456] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.889461] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.889464]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.889471]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.889478]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.889506] Call Trace:
>[12816.889520]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.889530]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.889538]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.889568]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.889584]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.889613]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.889648]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.889683]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.889719]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.889751]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.889760]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.889769]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.889777]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.889785]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.889794]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.889802]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.889827]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.889849]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.889873]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.889879]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.889904]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.889926]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.889948]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.889969]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.889975]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.889980]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.889986]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.890002]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.890008]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.890030]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.890044]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.890049]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.890070]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.890075]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.890082]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.890089]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.890094]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.890100]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.890106]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.890109] ---[ end trace c9f0c31965899e27 ]---
>[12816.890111] ------------[ cut here ]------------
>[12816.890132] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.890134] WARN_ON(!pd->page_table[pde])
>[12816.890136] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.890162] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.890165] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.890167]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.890172]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.890176]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.890181] Call Trace:
>[12816.890187]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.890194]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.890200]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.890224]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.890251]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.890287]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.890323]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.890362]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.890402]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.890439]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.890450]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.890457]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.890463]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.890470]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.890479]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.890488]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.890519]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.890549]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.890582]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.890591]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.890626]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.890673]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.890707]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.890741]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.890750]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.890757]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.890765]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.890787]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.890796]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.890825]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.890845]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.890852]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.890881]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.890890]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.890898]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.890906]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.890911]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.890917]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.890923]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.890926] ---[ end trace c9f0c31965899e28 ]---
>[12816.890928] ------------[ cut here ]------------
>[12816.890950] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.890952] WARN_ON(!pd->page_table[pde])
>[12816.890954] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.890980] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.890983] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.890985]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.890990]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.890994]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.890999] Call Trace:
>[12816.891005]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.891011]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.891018]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.891039]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.891046]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.891068]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.891089]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.891114]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.891139]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.891162]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.891168]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.891174]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.891179]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.891184]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.891191]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.891197]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.891222]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.891262]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.891302]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.891322]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.891362]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.891399]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.891434]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.891464]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.891472]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.891480]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.891488]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.891509]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.891517]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.891547]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.891580]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.891587]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.891620]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.891628]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.891637]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.891645]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.891654]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.891662]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.891670]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.891675] ---[ end trace c9f0c31965899e29 ]---
>[12816.891678] ------------[ cut here ]------------
>[12816.891709] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.891712] WARN_ON(!pd->page_table[pde])
>[12816.891715] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.891753] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.891758] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.891761]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.891768]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.891775]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.891782] Call Trace:
>[12816.891790]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.891799]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.891805]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.891827]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.891834]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.891855]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.891876]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.891902]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.891927]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.891950]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.891956]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.891962]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.891967]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.891972]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.891979]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.891985]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.892007]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.892029]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.892054]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.892059]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.892084]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.892107]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.892128]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.892150]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.892156]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.892161]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.892167]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.892183]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.892189]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.892213]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.892248]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.892268]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.892304]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.892325]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.892347]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.892368]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.892378]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.892385]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.892392]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.892397] ---[ end trace c9f0c31965899e2a ]---
>[12816.892400] ------------[ cut here ]------------
>[12816.892430] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.892433] WARN_ON(!pd->page_table[pde])
>[12816.892436] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.892473] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.892478] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.892481]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.892488]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.892495]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.892502] Call Trace:
>[12816.892510]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.892532]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.892555]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.892588]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.892597]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.892627]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.892663]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.892699]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.892733]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.892765]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.892774]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.892782]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.892790]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.892799]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.892808]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.892817]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.892847]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.892871]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.892895]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.892900]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.892926]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.892948]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.892970]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.892992]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.892997]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.893002]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.893009]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.893024]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.893030]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.893052]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.893067]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.893072]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.893093]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.893098]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.893105]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.893111]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.893117]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.893123]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.893128]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.893132] ---[ end trace c9f0c31965899e2b ]---
>[12816.893134] ------------[ cut here ]------------
>[12816.893155] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.893157] WARN_ON(!pd->page_table[pde])
>[12816.893159] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.893186] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.893189] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.893191]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.893195]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.893200]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.893214] Call Trace:
>[12816.893222]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.893246]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.893267]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.893302]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.893324]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.893360]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.893394]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.893429]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.893463]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.893495]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.893504]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.893520]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.893528]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.893540]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.893549]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.893558]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.893588]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.893618]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.893652]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.893660]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.893695]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.893728]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.893755]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.893777]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.893783]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.893788]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.893795]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.893810]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.893816]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.893838]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.893852]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.893857]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.893878]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.893884]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.893890]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.893897]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.893903]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.893909]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.893914]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.893917] ---[ end trace c9f0c31965899e2c ]---
>[12816.893919] ------------[ cut here ]------------
>[12816.893941] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.893943] WARN_ON(!pd->page_table[pde])
>[12816.893945] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.893972] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.893974] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.893977]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.893981]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.893986]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.893990] Call Trace:
>[12816.893996]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.894003]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.894009]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.894029]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.894036]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.894058]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.894079]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.894104]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.894130]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.894154]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.894159]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.894165]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.894170]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.894176]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.894182]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.894188]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.894212]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.894251]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.894290]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.894310]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.894349]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.894386]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.894422]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.894458]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.894468]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.894474]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.894482]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.894503]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.894511]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.894541]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.894560]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.894567]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.894597]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.894606]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.894615]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.894634]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.894653]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.894662]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.894669]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.894674] ---[ end trace c9f0c31965899e2d ]---
>[12816.894677] ------------[ cut here ]------------
>[12816.894706] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.894718] WARN_ON(!pd->page_table[pde])
>[12816.894724] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.894768] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.894772] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.894776]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.894782]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.894789]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.894796] Call Trace:
>[12816.894804]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.894814]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.894822]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.894851]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.894860]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.894891]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.894921]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.894956]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.894983]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.895007]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.895013]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.895019]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.895024]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.895029]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.895036]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.895042]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.895064]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.895086]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.895111]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.895116]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.895141]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.895164]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.895186]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.895209]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.895225]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.895246]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.895267]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.895297]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.895314]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.895341]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.895361]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.895368]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.895398]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.895405]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.895425]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.895434]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.895447]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.895457]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.895464]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.895469] ---[ end trace c9f0c31965899e2e ]---
>[12816.895473] ------------[ cut here ]------------
>[12816.895503] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.895506] WARN_ON(!pd->page_table[pde])
>[12816.895509] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.895547] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.895552] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.895555]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.895562]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.895569]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.895576] Call Trace:
>[12816.895585]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.895594]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.895602]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.895629]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.895636]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.895658]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.895679]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.895704]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.895729]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.895752]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.895758]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.895764]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.895769]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.895775]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.895781]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.895787]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.895809]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.895830]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.895855]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.895860]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.895885]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.895908]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.895929]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.895951]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.895957]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.895962]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.895968]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.895983]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.895989]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.896011]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.896025]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.896030]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.896051]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.896057]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.896064]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.896070]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.896076]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.896082]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.896087]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.896090] ---[ end trace c9f0c31965899e2f ]---
>[12816.896092] ------------[ cut here ]------------
>[12816.896114] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.896116] WARN_ON(!pd->page_table[pde])
>[12816.896118] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.896145] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.896148] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.896150]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.896154]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.896159]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.896163] Call Trace:
>[12816.896169]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.896176]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.896182]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.896203]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.896225]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.896269]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.896312]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.896358]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.896406]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.896452]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.896480]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.896505]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.896532]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.896553]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.896559]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.896567]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.896597]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.896627]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.896660]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.896667]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.896702]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.896733]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.896762]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.896793]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.896801]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.896808]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.896817]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.896839]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.896847]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.896899]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.896938]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.896945]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.896975]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.896983]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.897063]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.897072]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.897086]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.897096]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.897106]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.897110] ---[ end trace c9f0c31965899e30 ]---
>[12816.897112] ------------[ cut here ]------------
>[12816.897142] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.897146] WARN_ON(!pd->page_table[pde])
>[12816.897146] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.897183] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.897189] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.897195]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.897199]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.897222]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.897264] Call Trace:
>[12816.897269]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.897278]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.897318]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.897380]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.897432]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.897500]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.897538]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.897578]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.897609]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.897640]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.897648]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.897654]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.897659]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.897665]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.897671]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.897677]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.897700]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.897722]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.897746]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.897752]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.897777]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.897799]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.897826]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.897855]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.897864]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.897871]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.897880]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.897902]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.897911]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.897941]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.897961]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.897968]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.897999]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.898007]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.898017]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.898026]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.898034]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.898060]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.898115]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.898133] ---[ end trace c9f0c31965899e31 ]---
>[12816.898136] ------------[ cut here ]------------
>[12816.898162] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.898173] WARN_ON(!pd->page_table[pde])
>[12816.898175] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.898203] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.898217] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.898238]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.898285]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.898310]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.898316] Call Trace:
>[12816.898324]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.898355]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.898371]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.898421]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.898447]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.898478]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.898519]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.898555]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.898602]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.898650]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.898658]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.898667]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.898675]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.898683]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.898692]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.898701]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.898744]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.898767]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.898791]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.898797]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.898823]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.898851]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.898875]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.898923]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.898957]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.898975]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.898984]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.899003]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.899018]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.899040]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.899055]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.899060]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.899085]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.899104]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.899119]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.899127]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.899142]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.899151]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.899158]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.899169] ---[ end trace c9f0c31965899e32 ]---
>[12816.899173] ------------[ cut here ]------------
>[12816.899200] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.899223] WARN_ON(!pd->page_table[pde])
>[12816.899229] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.899333] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.899337] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.899341]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.899347]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.899353]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.899360] Call Trace:
>[12816.899368]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.899377]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.899384]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.899414]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.899423]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.899474]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.899516]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.899551]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.899590]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.899622]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.899631]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.899640]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.899648]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.899656]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.899666]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.899674]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.899706]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.899736]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.899761]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.899767]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.899792]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.899815]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.899837]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.899859]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.899865]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4
>[12816.899869]  [<ffffffff81334f23>] ? idr_mark_full+0x2b/0x52
>[12816.899876]  [<ffffffff81109093>] ? kmem_cache_alloc_trace+0x2a/0xfb
>[12816.899892]  [<ffffffffa0017cbc>] ? drm_vma_node_allow+0xaa/0xb2 [drm]
>[12816.899898]  [<ffffffff8110948a>] ? __kmalloc+0x65/0x13d
>[12816.899920]  [<ffffffffa0097085>] ? i915_gem_execbuffer2+0x16e/0x205 [i915]
>[12816.899934]  [<ffffffffa00047ae>] ? drm_ioctl+0x322/0x38d [drm]
>[12816.899939]  [<ffffffff81115db7>] ? pipe_read+0x211/0x227
>[12816.899960]  [<ffffffffa0096f17>] ? i915_gem_execbuffer+0x339/0x339 [i915]
>[12816.899966]  [<ffffffff8110ed0c>] ? new_sync_read+0x6b/0x8f
>[12816.899973]  [<ffffffff810a84bb>] ? seccomp_phase1+0x1b7/0x1f0
>[12816.899979]  [<ffffffff8111daa6>] ? do_vfs_ioctl+0x360/0x424
>[12816.899985]  [<ffffffff8100d3e9>] ? syscall_trace_enter_phase1+0xe4/0x123
>[12816.899991]  [<ffffffff8111dbb3>] ? SyS_ioctl+0x49/0x7a
>[12816.899996]  [<ffffffff8179b0f2>] ? system_call_fastpath+0x12/0x17
>[12816.900000] ---[ end trace c9f0c31965899e33 ]---
>[12816.900002] ------------[ cut here ]------------
>[12816.900024] WARNING: CPU: 0 PID: 26375 at drivers/gpu/drm/i915/i915_gem_gtt.c:504 gen8_ppgtt_clear_range+0xcd/0x16e [i915]()
>[12816.900026] WARN_ON(!pd->page_table[pde])
>[12816.900028] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core snd_hwdep snd_pcm pcspkr snd_timer i2c_i801 snd soundcore joydev wmi battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
>[12816.900056] CPU: 0 PID: 26375 Comm: chrome Tainted: G        W       4.0.0_drm-intel-nightly_b9fe35_20150421+ #368
>[12816.900059] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
>[12816.900061]  0000000000000000 0000000000000009 ffffffff81795847 ffff880147693508
>[12816.900066]  ffffffff8103bd5a ffffffff8103bafd ffffffffa0098277 0000000000000000
>[12816.900070]  000000009b37f083 0000000000000000 0000000000000013 0000000000000a6c
>[12816.900075] Call Trace:
>[12816.900081]  [<ffffffff81795847>] ? dump_stack+0x40/0x50
>[12816.900088]  [<ffffffff8103bd5a>] ? warn_slowpath_common+0x98/0xb0
>[12816.900094]  [<ffffffff8103bafd>] ? add_taint+0x2a/0x2c
>[12816.900115]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.900122]  [<ffffffff8103bdb7>] ? warn_slowpath_fmt+0x45/0x4a
>[12816.900145]  [<ffffffffa0098211>] ? gen8_ppgtt_clear_range+0x67/0x16e [i915]
>[12816.900166]  [<ffffffffa0098277>] ? gen8_ppgtt_clear_range+0xcd/0x16e [i915]
>[12816.900192]  [<ffffffffa00a0355>] ? i915_vma_unbind+0xb9/0x1e6 [i915]
>[12816.900220]  [<ffffffffa00a2b23>] ? i915_gem_shrink+0x166/0x1dc [i915]
>[12816.900257]  [<ffffffffa00a2bf9>] ? i915_gem_shrinker_scan+0x60/0x81 [i915]
>[12816.900283]  [<ffffffff810de3b3>] ? shrink_slab.part.57.constprop.67+0x1a5/0x2b5
>[12816.900311]  [<ffffffff810e038b>] ? shrink_zone+0x67/0x92
>[12816.900339]  [<ffffffff810e0771>] ? do_try_to_free_pages+0x20d/0x241
>[12816.900366]  [<ffffffff810e0871>] ? try_to_free_pages+0xcc/0x108
>[12816.900395]  [<ffffffff810d7b46>] ? __alloc_pages_nodemask+0x48e/0x6fc
>[12816.900422]  [<ffffffff81104767>] ? alloc_pages_current+0xad/0xca
>[12816.900457]  [<ffffffffa0097cdd>] ? alloc_pt_single+0x75/0x131 [i915]
>[12816.900486]  [<ffffffffa009975f>] ? gen8_alloc_va_range+0x2ae/0x6cc [i915]
>[12816.900520]  [<ffffffffa009add9>] ? i915_vma_bind+0x9e/0x454 [i915]
>[12816.900529]  [<ffffffff81355064>] ? swiotlb_map_sg_attrs+0x84/0x10c
>[12816.900564]  [<ffffffffa00a0b2f>] ? i915_gem_object_do_pin+0x6ad/0x77f [i915]
>[12816.900595]  [<ffffffffa0094fc1>] ? i915_gem_execbuffer_reserve_vma.isra.12+0x5d/0x103 [i915]
>[12816.900625]  [<ffffffffa00952b3>] ? i915_gem_execbuffer_reserve+0x24c/0x2e3 [i915]
>[12816.900655]  [<ffffffffa0095916>] ? i915_gem_do_execbuffer.isra.13+0x5cc/0xd88 [i915]
>[12816.900663]  [<ffffffff8133543a>] ? idr_get_empty_slot+0x1c5/0x2c4

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