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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW Regression]igt/drv_module_reload causes "WARNING: CPU: 5 PID: 4025 at drivers/gpu/drm/drm_mm.c:765 i915_global_gtt_cleanup+0x3a/0x80 [i915]()""
href="https://bugs.freedesktop.org/show_bug.cgi?id=86507">86507</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[HSW Regression]igt/drv_module_reload causes "WARNING: CPU: 5 PID: 4025 at drivers/gpu/drm/drm_mm.c:765 i915_global_gtt_cleanup+0x3a/0x80 [i915]()"
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg 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>jinxianx.guo@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>Created <span class=""><a href="attachment.cgi?id=109787" name="attach_109787" title="dmesg">attachment 109787</a> <a href="attachment.cgi?id=109787&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: Yes,
Good commit on -next-queued:
77c1aa84de0096792de673aa1c64c36b38553cf5(2014_11_19)
Non-working platforms: HSW
==kernel==
--------------------------
origin/drm-intel-nightly: 18748be7c96accc27327423c384f86a8fae99c35(fails)
drm-intel-nightly: 2014y-11m-20d-21h-58m-44s UTC integration manifest
origin/drm-intel-next-queued: 89a35ecdc6aa5a88165313ca5cfd52b8e8e7fbbd(fails)
drm/i915/g4x: fix g4x infoframe readout
origin/drm-intel-fixes: 0485c9dc24ec0939b42ca5104c0373297506b555(another <a class="bz_bug_link
bz_status_VERIFIED bz_closed"
title="VERIFIED FIXED - [HSW Regression]igt/pm_rpm/system-suspend cause " WARNING: CPU: 0 PID: 786 at drivers/gpu/drm/i915/i915_irq.c:209 gen6_enable_rps_interrupts+0x39/0x5c [i915]()""
href="show_bug.cgi?id=80517">bug
80517</a>)
drm/i915: Kick fbdev before vgacon
==Bug detailed description==
igt/drv_module_reload causes "WARNING: CPU: 5 PID: 4025 at
drivers/gpu/drm/drm_mm.c:765 i915_global_gtt_cleanup+0x3a/0x80 [i915]()"
Output:
[root@x-hsw24 tests]# ./drv_module_reload
unbinding /sys/class/vtconsole/vtcon0/: (M) frame buffer device
module successfully unloaded
module successfully loaded again
[root@x-hsw24 tests]# echo $?
0
[root@x-hsw24 tests]# dmesg -r|egrep ""<[1-4]>""|grep drm
<4>[ 198.502172] WARNING: CPU: 5 PID: 4025 at drivers/gpu/drm/drm_mm.c:765
i915_global_gtt_cleanup+0x3a/0x80 [i915]()
<4>[ 198.502175] Modules linked in: ip6table_filter ip6_tables ebtable_nat
ebtables nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT
nf_reject_ipv4 iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables
bridge stp llc ipv6 dm_mod iTCO_wdt iTCO_vendor_support dcdbas
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi serio_raw pcspkr
i2c_i801 snd_hda_controller snd_hda_codec lpc_ich snd_hwdep mfd_core snd_pcm
shpchp snd_timer snd soundcore battery acpi_cpufreq i915(-) button video
drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea [last unloaded:
snd_hda_intel]
<4>[ 198.502199] CPU: 5 PID: 4025 Comm: rmmod Not tainted
3.18.0-rc5_drm-intel-nightly_18748b_20141121+ #1774
<4>[ 198.502249] [<ffffffffa0023959>] ? drm_modeset_unlock_all+0x41/0x50
[drm]
<4>[ 198.502254] [<ffffffffa001308d>] ? drm_dev_unregister+0x1e/0x8b [drm]
<4>[ 198.502259] [<ffffffffa001394f>] ? drm_put_dev+0x3e/0x47 [drm]
<4>[ 198.502280] [<ffffffffa00151a1>] ? drm_pci_exit+0x39/0x9c [drm]
<4>[ 198.502337] CPU: 5 PID: 4025 Comm: rmmod Tainted: G B W
3.18.0-rc5_drm-intel-nightly_18748b_20141121+ #1774
<4>[ 198.502381] [<ffffffffa0023959>] ? drm_modeset_unlock_all+0x41/0x50
[drm]
<4>[ 198.502385] [<ffffffffa001308d>] ? drm_dev_unregister+0x1e/0x8b [drm]
<4>[ 198.502390] [<ffffffffa001394f>] ? drm_put_dev+0x3e/0x47 [drm]
<4>[ 198.502408] [<ffffffffa00151a1>] ? drm_pci_exit+0x39/0x9c [drm]
<4>[ 198.502422] CPU: 5 PID: 4025 Comm: rmmod Tainted: G B W
3.18.0-rc5_drm-intel-nightly_18748b_20141121+ #1774
<4>[ 198.502447] [<ffffffffa0023959>] ? drm_modeset_unlock_all+0x41/0x50
[drm]
<4>[ 198.502452] [<ffffffffa001308d>] ? drm_dev_unregister+0x1e/0x8b [drm]
<4>[ 198.502456] [<ffffffffa001394f>] ? drm_put_dev+0x3e/0x47 [drm]
<4>[ 198.502474] [<ffffffffa00151a1>] ? drm_pci_exit+0x39/0x9c [drm]
==Reproduce steps==
----------------------------
1. ./drv_module_reload</pre>
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