<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>high
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BDW Regression]BUG: unable to handle kernel paging request at ffffc900110a0000"
href="https://bugs.freedesktop.org/show_bug.cgi?id=78274">78274</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org, jinxianx.guo@intel.com
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BDW Regression]BUG: unable to handle kernel paging request at ffffc900110a0000
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>huax.lu@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=98446" name="attach_98446" title="dmesg">attachment 98446</a> <a href="attachment.cgi?id=98446&action=edit" title="dmesg">[details]</a></span>
dmesg
system Environment:
--------------------------
Platform: Broadwell
Kernel:(drm-intel-nightly)08ce6614d07dd1e426109672a5e323317c8d6ec7
Bug detailed description:
-----------------------------
Open google-chrome browser, reports BUG: unable to handle kernel paging request
at ffffc900110a0000.
It happens on Broadwell with -nightly and -queued branch.
The latest known good commit: c79057922ed6c2c6df1214e6ab4414fea1b23db2
The latest known bad commit: e5c03ca362819ba8ffbe5674340b61b9cd75de8f
dmesg:
[ 38.784886] BUG: unable to handle kernel paging request at ffffc900110a0000
[ 38.784938] IP: [<ffffffff812e6723>] iowrite32+0xe/0x28
[ 38.784976] PGD 14a80e067 PUD 14a80f067 PMD 149b68067 PTE 0
[ 38.785017] Oops: 0002 [#1] SMP
[ 38.785041] Modules linked in: ip6table_filter ip6_tables ipv6
iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod
snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support ppdev pcspkr i2c_i801
snd_hda_intel snd_hda_controller snd_hda_codec lpc_ich snd_hwdep mfd_core
snd_pcm snd_timer snd soundcore battery parport_pc parport ac acpi_cpufreq i915
video button drm_kms_helper drm
[ 38.785298] CPU: 0 PID: 4171 Comm: X Not tainted
3.15.0-rc2_drm-intel-nightly_08ce66_20140505+ #2318
[ 38.785353] task: ffff880002221f80 ti: ffff8800a633c000 task.ti:
ffff8800a633c000
[ 38.785397] RIP: 0010:[<ffffffff812e6723>] [<ffffffff812e6723>]
iowrite32+0xe/0x28
[ 38.785446] RSP: 0018:ffff8800a633dc00 EFLAGS: 00010292
[ 38.785478] RAX: 00000000fffff40c RBX: ffff880002da5780 RCX:
000000000001ffd8
[ 38.785520] RDX: 000000000001ffe8 RSI: ffffc900110a0000 RDI:
ffffc900110a0000
[ 38.785561] RBP: 0000000000000002 R08: 00000000000144c0 R09:
ffff8800020e7d78
[ 38.785603] R10: ffff8800020e7d78 R11: 00007f597a566106 R12:
ffff880002da4000
[ 38.785644] R13: 0000000000000000 R14: 0000000000022040 R15:
ffff8800a6b62d80
[ 38.785691] FS: 00007f597d6558c0(0000) GS:ffff88014f400000(0000)
knlGS:0000000000000000
[ 38.785738] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 38.785771] CR2: ffffc900110a0000 CR3: 00000000a6301000 CR4:
00000000003407f0
[ 38.785812] Stack:
[ 38.785825] ffffffffa008b646 000000000081c000 0000000000000004
ffff880002da5780
[ 38.785874] ffff880002da4000 ffff880002315e00 0000000000000000
ffff880002da5780
[ 38.785923] ffffffffa008a9a8 ffff880002315e00 ffffffffa008d3a1
0000000000000000
[ 38.785973] Call Trace:
[ 38.786006] [<ffffffffa008b646>] ? gen6_signal+0xd7/0x10c [i915]
[ 38.786053] [<ffffffffa008a9a8>] ? gen6_add_request+0x13/0x88 [i915]
[ 38.786101] [<ffffffffa008d3a1>] ? intel_ring_flush_all_caches+0x1c/0x29
[i915]
[ 38.786155] [<ffffffffa007a17f>] ? __i915_add_request+0x1c4/0x1e3 [i915]
[ 38.786204] [<ffffffffa0075eb1>] ?
i915_gem_do_execbuffer.isra.16+0xff1/0x1142 [i915]
[ 38.786253] [<ffffffff812e3c23>] ? __sg_page_iter_next+0x2b/0x58
[ 38.786298] [<ffffffffa00764d0>] ? i915_gem_execbuffer2+0x177/0x1fb [i915]
[ 38.786345] [<ffffffffa0002f22>] ? drm_ioctl+0x25c/0x3ad [drm]
[ 38.786388] [<ffffffffa0076359>] ? i915_gem_execbuffer+0x357/0x357 [i915]
[ 38.786431] [<ffffffff8104d453>] ? enqueue_hrtimer+0x15/0x37
[ 38.786468] [<ffffffff8104da02>] ? __hrtimer_start_range_ns+0x21a/0x238
[ 38.786512] [<ffffffff810ee9b3>] ? do_vfs_ioctl+0x3ec/0x435
[ 38.786548] [<ffffffff810eea45>] ? SyS_ioctl+0x49/0x78
[ 38.786582] [<ffffffff81092d69>] ? __audit_syscall_exit+0x209/0x225
[ 38.786623] [<ffffffff8172d622>] ? system_call_fastpath+0x16/0x1b
[ 38.786659] Code: 48 89 f7 76 05 e9 21 5c d4 ff 48 81 fe 00 00 01 00 77 09
48 c7 c6 15 9f 9b 81 eb aa c3 48 81 fe ff ff 03 00 89 f8 48 89 f7 76 03 <89> 06
c3 48 81 fe 00 00 01 00 76 05 0f b7 d6 ef c3 48 c7 c6 49
[ 38.786873] RIP [<ffffffff812e6723>] iowrite32+0xe/0x28
[ 38.786909] RSP <ffff8800a633dc00>
[ 38.786930] CR2: ffffc900110a0000
[ 38.801814] ---[ end trace b37fc0904a9ee0eb ]---
Reproduce steps:
----------------------------
1. xinit
2. open google-chrome browser</pre>
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