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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BDW-U SKL] System crashing with gem_mmap_gtt over huge-bo-tiledx huge-bo-tiledy and huge-copy-xy"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91569#c9">Comment # 9</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [BDW-U SKL] System crashing with gem_mmap_gtt over huge-bo-tiledx huge-bo-tiledy and huge-copy-xy"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91569">bug 91569</a>
from <span class="vcard"><a class="email" href="mailto:elio.martinez.monroy@intel.com" title="Elio <elio.martinez.monroy@intel.com>"> <span class="fn">Elio</span></a>
</span></b>
<pre>The problem is present on BYT with latest graphic stack and the following
kernel: 4.4.0-rc1-nightly+
[ 604.956891] WARNING: CPU: 1 PID: 2354 at
/home/shared/kernels/drm-intel/drivers/gpu/drm/i915/i915_gem.c:1880
i915_gem_fault+0x255/0x470 [i915]()
[ 604.956895] unhandled error in i915_gem_fault: -7
[ 604.956898] Modules linked in: binfmt_misc nls_iso8859_1 uvcvideo
videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core hid_multitouch
v4l2_common videodev usbhid snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic intel_rapl intel_soc_dts_iosf intel_powerclamp coretemp
kvm_intel kvm irqbypass arc4 rtl8188ee crct10dif_pclmul crc32_pclmul rtl_pci
rtlwifi mac80211 cryptd snd_soc_rt5640 snd_hda_intel snd_soc_rl6231
snd_intel_sst_acpi cfg80211 snd_hda_codec snd_intel_sst_core
snd_soc_sst_mfld_platform snd_soc_core snd_hda_core joydev snd_compress
serio_raw snd_hwdep snd_pcm_dmaengine i915 snd_pcm toshiba_acpi sparse_keymap
snd_seq_midi snd_seq_midi_event drm_kms_helper toshiba_bluetooth snd_rawmidi
drm dw_dmac snd_seq dw_dmac_core video i2c_algo_bit intel_smartconnect wmi
fb_sys_fops
[ 604.956969] snd_seq_device syscopyarea snd_timer rfkill_gpio sysfillrect
snd i2c_hid sysimgblt xhci_pci mei_txe hid xhci_hcd mei snd_soc_sst_acpi
spi_pxa2xx_platform i2c_designware_platform i2c_designware_core 8250_dw shpchp
iosf_mbi lpc_ich soundcore mac_hid parport_pc ppdev lp parport autofs4 psmouse
r8169 mii ahci libahci sdhci_acpi sdhci
[ 604.957010] CPU: 1 PID: 2354 Comm: gem_mmap_gtt Tainted: G U
4.4.0-rc1-nightly+ #1
[ 604.957013] Hardware name: TOSHIBA Satellite C55t-A/Portable PC, BIOS 1.30
03/24/2014
[ 604.957017] ffffffffa03ee670 ffff88005e7dfc60 ffffffff8139129d
ffff88005e7dfca8
[ 604.957023] ffff88005e7dfc98 ffffffff81076196 0000000000000002
ffff880036933800
[ 604.957028] 00000000fffffff9 ffff8801705fd170 ffff88005e7dfdb8
ffff88005e7dfcf8
[ 604.957034] Call Trace:
[ 604.957044] [<ffffffff8139129d>] dump_stack+0x44/0x57
[ 604.957051] [<ffffffff81076196>] warn_slowpath_common+0x86/0xc0
[ 604.957056] [<ffffffff8107621c>] warn_slowpath_fmt+0x4c/0x50
[ 604.957087] [<ffffffffa0355315>] i915_gem_fault+0x255/0x470 [i915]
[ 604.957093] [<ffffffff8119accd>] __do_fault+0x3d/0xa0
[ 604.957099] [<ffffffff810686d3>] ? pte_alloc_one+0x33/0x40
[ 604.957104] [<ffffffff8119f03a>] handle_mm_fault+0xe9a/0x1820
[ 604.957110] [<ffffffff810b0c32>] ? pick_next_task_fair+0x322/0x4b0
[ 604.957117] [<ffffffff8106321a>] __do_page_fault+0x19a/0x430
[ 604.957122] [<ffffffff810634e0>] do_page_fault+0x30/0x80
[ 604.957128] [<ffffffff8116e7ad>] ? context_tracking_exit+0x1d/0x30
[ 604.957134] [<ffffffff81769c78>] page_fault+0x28/0x30
[ 604.957138] ---[ end trace 4898d5e110f1f6dd ]---</pre>
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