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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT HSW] Unclaimed register detected before writing to register 0x45110"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94384">94384</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BAT HSW] Unclaimed register detected before writing to register 0x45110
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mika.kuoppala@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>/opt/igt/tests/kms_pipe_crc_basic --run-subtest
nonblocking-crc-pipe-B-frame-sequence
dmesg
[ 295.562825] ------------[ cut here ]------------
[ 295.562858] WARNING: CPU: 0 PID: 6858 at
drivers/gpu/drm/i915/intel_uncore.c:649 __unclaimed_reg_debug+0x7e/0x90
[i915]()
[ 295.562859] Unclaimed register detected before writing to register 0x45110
[ 295.562860] Modules linked in: snd_hda_intel i915 snd_hda_codec_hdmi
x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec
snd_hwdep snd_hda_core i2c_hid mei_me snd_pcm mei i2c_designware_platform
lpc_ich i2c_designware_core r8169 mii sdhci_acpi sdhci mmc_core [last unloaded:
i915]
[ 295.562873] CPU: 0 PID: 6858 Comm: kms_pipe_crc_ba Tainted: G U W
4.5.0-rc6-gfxbench+ #1
[ 295.562874] Hardware name: GIGABYTE M4HM87P-00/M4HM87P-00, BIOS F6
12/10/2014
[ 295.562875] 0000000000000000 ffff8800d914b910 ffffffff813fba95
ffff8800d914b958
[ 295.562877] ffffffffa03c3d90 ffff8800d914b948 ffffffff81078711
0000000000045110
[ 295.562878] 0000000000000001 0000000000000000 000000000892d21a
0000000000000296
[ 295.562880] Call Trace:
[ 295.562883] [<ffffffff813fba95>] dump_stack+0x67/0x92
[ 295.562886] [<ffffffff81078711>] warn_slowpath_common+0x81/0xc0
[ 295.562887] [<ffffffff81078797>] warn_slowpath_fmt+0x47/0x50
[ 295.562901] [<ffffffffa032ac8e>] __unclaimed_reg_debug+0x7e/0x90 [i915]
[ 295.562911] [<ffffffffa033266b>] hsw_write32+0x21b/0x270 [i915]
[ 295.562920] [<ffffffffa02dba68>] _ilk_disable_lp_wm+0x98/0xd0 [i915]
[ 295.562929] [<ffffffffa02e1074>] ilk_program_watermarks+0x4e4/0x9a0 [i915]
[ 295.562938] [<ffffffffa02e1640>] ilk_optimize_watermarks+0x110/0x130 [i915]
[ 295.562950] [<ffffffffa0350a94>] intel_atomic_commit+0x8b4/0x1610 [i915]
[ 295.562952] [<ffffffff8152ba4a>] ?
drm_atomic_set_crtc_for_connector+0x2a/0xe0
[ 295.562954] [<ffffffff8152c722>] drm_atomic_commit+0x32/0x50
[ 295.562956] [<ffffffff81509175>] drm_atomic_helper_set_config+0x75/0xb0
[ 295.562958] [<ffffffff8151cb60>] drm_mode_set_config_internal+0x60/0x110
[ 295.562959] [<ffffffff81520276>] drm_mode_setcrtc+0x186/0x4f0
[ 295.562961] [<ffffffff8118d0b8>] ? __might_fault+0x48/0xa0
[ 295.562963] [<ffffffff8151215d>] drm_ioctl+0x13d/0x590
[ 295.562964] [<ffffffff815200f0>] ? drm_mode_setplane+0x1b0/0x1b0
[ 295.562966] [<ffffffff811e5c7a>] do_vfs_ioctl+0x8a/0x670
[ 295.562968] [<ffffffff817c3026>] ? int_ret_from_sys_call+0x52/0x9f
[ 295.562970] [<ffffffff811f1b2a>] ? __fget_light+0x6a/0x90
[ 295.562971] [<ffffffff811e629c>] SyS_ioctl+0x3c/0x70
[ 295.562973] [<ffffffff817c2e9b>] entry_SYSCALL_64_fastpath+0x16/0x73
[ 295.562974] ---[ end trace dea6ba6d805caae2 ]---</pre>
</div>
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