<html>
<head>
<base href="https://bugs.freedesktop.org/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SNB]igt/drv_module_reload causes "WARNING: CPU: 0 PID: 4163 at drivers/gpu/drm/i915/i915_irq.c:154 ironlake_disable_vblank+0x40/0x52 [i915]()""
href="https://bugs.freedesktop.org/show_bug.cgi?id=86685">86685</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[SNB]igt/drv_module_reload causes "WARNING: CPU: 0 PID: 4163 at drivers/gpu/drm/i915/i915_irq.c:154 ironlake_disable_vblank+0x40/0x52 [i915]()"
</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>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=109983" name="attach_109983" title="dmesg">attachment 109983</a> <a href="attachment.cgi?id=109983&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: No
The tests always fail, only occurs on -fixes branch.
Non-working platforms: SNB
==kernel==
--------------------------
origin/drm-intel-nightly: ab4b258a6ea5f58b5cb17131aced8f9a8dd64499(works)
drm-intel-nightly: 2014y-11m-24d-21h-37m-18s UTC integration manifest
origin/drm-intel-next-queued: a259953ea9b7c86e437e0a620d37aad150a00b8f(works)
drm/i915: Stop gathering error states for CS error interrupts
origin/drm-intel-fixes: bdfa7542d40e6251c232a802231b37116bd31b11(fails)
drm/i915: Ignore SURFLIVE and flip counter when the GPU gets reset
==Bug detailed description==
igt/drv_module_reload causes "WARNING: CPU: 0 PID: 4163 at
drivers/gpu/drm/i915/i915_irq.c:154 ironlake_disable_vblank+0x40/0x52 [i915]()"
Output:
[root@x-hnr9 tests]# ./drv_module_reload
unbinding /sys/class/vtconsole/vtcon0/: (M) frame buffer device
module successfully unloaded
[root@x-hnr9 tests]# dmesg -r|egrep ""<[1-4]>""|grep drm
<4>[ 156.110067] WARNING: CPU: 0 PID: 4163 at
drivers/gpu/drm/i915/i915_irq.c:154 ironlake_disable_vblank+0x40/0x52 [i915]()
<4>[ 156.110071] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support ppdev snd_hda_codec_idt snd_hda_codec_generic pcspkr
serio_raw uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core
v4l2_common videodev firewire_ohci lpc_ich mfd_core snd_hda_controller
snd_hda_codec snd_hwdep snd_pcm firewire_core crc_itu_t snd_timer snd soundcore
parport_pc parport tpm_infineon tpm_tis tpm wmi ac battery acpi_cpufreq joydev
i915(-) button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea [last
unloaded: snd_hda_intel]
<4>[ 156.110103] CPU: 0 PID: 4163 Comm: rmmod Not tainted
3.18.0-rc6_drm-intel-fixes_bdfa75_20141125+ #1930
<4>[ 156.110161] [<ffffffffa0010f9e>] ? vblank_disable_and_save+0x74/0x17f
[drm]
<4>[ 156.110172] [<ffffffffa0012202>] ? drm_vblank_cleanup+0x48/0x7c [drm]
<4>[ 156.110190] [<ffffffffa0013127>] ? drm_dev_unregister+0x1e/0x8b [drm]
<4>[ 156.110197] [<ffffffffa00139b5>] ? drm_put_dev+0x45/0x4e [drm]
<4>[ 156.110225] [<ffffffffa0015221>] ? drm_pci_exit+0x39/0x9c [drm]
<4>[ 156.110258] WARNING: CPU: 0 PID: 4163 at
drivers/gpu/drm/i915/i915_irq.c:154 ironlake_disable_vblank+0x40/0x52 [i915]()
<4>[ 156.110261] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support ppdev snd_hda_codec_idt snd_hda_codec_generic pcspkr
serio_raw uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core
v4l2_common videodev firewire_ohci lpc_ich mfd_core snd_hda_controller
snd_hda_codec snd_hwdep snd_pcm firewire_core crc_itu_t snd_timer snd soundcore
parport_pc parport tpm_infineon tpm_tis tpm wmi ac battery acpi_cpufreq joydev
i915(-) button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea [last
unloaded: snd_hda_intel]
<4>[ 156.110292] CPU: 0 PID: 4163 Comm: rmmod Tainted: G W
3.18.0-rc6_drm-intel-fixes_bdfa75_20141125+ #1930
<4>[ 156.110342] [<ffffffffa0010f9e>] ? vblank_disable_and_save+0x74/0x17f
[drm]
<4>[ 156.110351] [<ffffffffa0012202>] ? drm_vblank_cleanup+0x48/0x7c [drm]
<4>[ 156.110368] [<ffffffffa0013127>] ? drm_dev_unregister+0x1e/0x8b [drm]
<4>[ 156.110374] [<ffffffffa00139b5>] ? drm_put_dev+0x45/0x4e [drm]
<4>[ 156.110400] [<ffffffffa0015221>] ? drm_pci_exit+0x39/0x9c [drm]
==Reproduce steps==
----------------------------
1. ./drv_module_reload</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are on the CC list for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>