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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@kms_frontbuffer_tracking@*-draw-pwrite - dmesg-warn/fail - BUG: Bad page state in process kms_frontbuffer pfn:1ff512"
href="https://bugs.freedesktop.org/show_bug.cgi?id=106089">106089</a>
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<th>Summary</th>
<td>[CI] igt@kms_frontbuffer_tracking@*-draw-pwrite - dmesg-warn/fail - BUG: Bad page state in process kms_frontbuffer pfn:1ff512
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</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>XOrg git
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>martin.peres@free.fr
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<pre>[ 608.829557] BUG: Bad page state in process kms_frontbuffer pfn:1ff512
[ 608.829790] page:ffffe845c7fd4480 count:8 mapcount:0 mapping:0000000000000000
index:0x2
[ 608.829796] flags: 0x8000000000000000()
[ 608.829801] raw: 8000000000000000 0000000000000000 0000000000000002
00000008ffffffff
[ 608.829805] raw: dead000000000100 dead000000000200 0000000000000000
0000000000000000
[ 608.829808] page dumped because: nonzero _count
[ 608.829811] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic i915 snd_hda_intel x86_pkg_temp_thermal snd_hda_codec
intel_powerclamp snd_hwdep coretemp snd_hda_core crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel snd_pcm e1000e mei_me mei prime_numbers
[ 608.829847] CPU: 3 PID: 1545 Comm: kms_frontbuffer Tainted: G U
4.16.0-rc7-gfcaf73c13c14-drmtip_13+ #1
[ 608.829849] Hardware name: Intel Corporation CannonLake Client
Platform/CannonLake Y LPDDR4 RVP, BIOS CNLSFWR1.R00.X122.B01.1801151045
01/15/2018
[ 608.829851] Call Trace:
[ 608.829856] dump_stack+0x67/0x95
[ 608.829861] bad_page+0xbf/0x120
[ 608.829865] get_page_from_freelist+0xbaa/0x1530
[ 608.829880] __alloc_pages_nodemask+0x100/0x1250
[ 608.829884] ? mark_held_locks+0x50/0x80
[ 608.829894] ? percpu_counter_add_batch+0x7e/0xb0
[ 608.829900] shmem_alloc_and_acct_page+0x83/0x3a0
[ 608.829907] shmem_getpage_gfp.isra.9+0x167/0xc90
[ 608.829917] shmem_read_mapping_page_gfp+0x3e/0x70
[ 608.829953] i915_gem_object_get_pages_gtt+0x13d/0x6d0 [i915]
[ 608.829987] ____i915_gem_object_get_pages+0x1d/0xa0 [i915]
[ 608.830015] __i915_gem_object_get_pages+0x59/0xb0 [i915]
[ 608.830043] i915_gem_fault+0x320/0x860 [i915]
[ 608.830051] __do_fault+0x1b/0x80
[ 608.830055] __handle_mm_fault+0x877/0xe20
[ 608.830064] handle_mm_fault+0x196/0x3a0
[ 608.830070] __do_page_fault+0x295/0x590
[ 608.830076] ? page_fault+0x2f/0x50
[ 608.830079] page_fault+0x45/0x50
[ 608.830081] RIP: 6d9ffdc1:0x5623a1d173f5
[ 608.830083] RSP: 40f02390:00007ffc40f02070 EFLAGS: 5623a1d17425
[ 608.830092] Disabling lock debugging due to kernel taint</pre>
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