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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 - [BYT]igt/drv_missed_irq_hang causes system hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88041">88041</a>
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<tr>
<th>Summary</th>
<td>[BYT]igt/drv_missed_irq_hang causes system hang
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
</tr>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>huax.lu@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>
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<pre>==System Environment==
--------------------------
Regression: not sure
Non-working platforms: BYT(N2810 @ 2.00GHz)
==kernel==
--------------------------
drm-intel-nightly/07d0c831d9207c937595f081c8fddbddbf53756f
commit 07d0c831d9207c937595f081c8fddbddbf53756f
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date: Tue Dec 30 15:02:01 2014 +0200
drm-intel-nightly: 2014y-12m-30d-13h-01m-34s UTC integration manifest
==Bug detailed description==
-----------------------------
It only happens on single machine. Test drm-intel-fixes, drm-intel-nightly and
drm-intel-next-queued kernel, they all have this issue. Test on earlier
kernel, it also has this issue.
output:
Interrupts masked
dmesg:
[ 117.519273] netpoll: netconsole: remote ethernet address 00:10:60:31:90:99
[ 117.519409] netpoll: netconsole: local IP 10.239.156.137
[ 117.519553] console [netcon0] enabled
[ 117.519604] netconsole: network logging started
[ 117.524861] console [netcon0] disabled
[ 117.542277] netpoll: netconsole: remote port 6666
[ 117.542337] netpoll: netconsole: remote IPv4 address 10.239.156.112
[ 117.542419] netpoll: netconsole: remote ethernet address 00:10:60:31:90:99
[ 117.542520] netpoll: netconsole: local IP 10.239.156.137
[ 117.542654] console [netcon0] enabled
[ 117.542707] netconsole: network logging started
[ 130.948896] [drm:i915_error_state_write] Resetting error state
[ 130.951557] [drm:i915_ring_test_irq_set] Masking interrupts on rings
0x0000000f
[ 130.979957] gem_exec_blt: executing
[ 130.980164] gem_exec_blt: starting subtest normal
[ 130.980275] [drm:i915_gem_open]
[ 134.999697] [drm] Fake missed irq on bsd ring
[ 134.999882] [drm:i915_gem_open]
[ 139.007468] [drm] Fake missed irq on blitter ring
[ 139.155455] gem_exec_blt: starting subtest dumb-buf
[ 139.155574] [drm:i915_gem_open]
[ 139.248026] [drm:intel_crtc_set_config] [CRTC:19] [FB:46] #connectors=1 (x
y) (0 0)
[ 139.250939] [drm:intel_set_config_compute_mode_changes] computed changes for
[CRTC:19], mode_changed=0, fb_changed=0
==Reproduce steps==
----------------------------
1. ./drv_missed_irq_hang</pre>
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