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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 - [BSW Regression]igt/gem_reset_stats/ban-blt causes system hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88817">88817</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BSW Regression]igt/gem_reset_stats/ban-blt 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>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>critical
</td>
</tr>
<tr>
<th>Priority</th>
<td>high
</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>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>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=112866" name="attach_112866" title="dmesg">attachment 112866</a> <a href="attachment.cgi?id=112866&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: yes
good commit: 985850bd145655d10dfcd5a03a3fc38540794ca7
bad commit: 518c2e29d566427433b4ebf51f5863b69f8baf4a
no-working platforms: BSW
==kernel==
--------------------------
drm-intel-nightly/67e9eb08a3b967b1ac6b7ec4588a93a2cb030cae
commit 67e9eb08a3b967b1ac6b7ec4588a93a2cb030cae
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Fri Jan 23 17:04:55 2015 +0100
drm-intel-nightly: 2015y-01m-23d-16h-04m-34s UTC integration manifest
==Bug detailed description==
-----------------------------
output:
IGT-Version: 1.9-g032f30c (x86_64) (Linux:
3.19.0-rc5_drm-intel-nightly_67e9eb_20150126+ x86_64)
Segmentation fault
dmesg:
[ 153.932969] CPU: 0 PID: 4456 Comm: gem_reset_stats Not tainted
3.19.0-rc5_drm-intel-nightly_67e9eb_20150126+ #938
[ 153.938635] task: ffff880179c14800 ti: ffff880002814000 task.ti:
ffff880002814000
[ 153.944313] RIP: 0010:[<ffffffff8110dc7e>] [<ffffffff8110dc7e>]
kmem_cache_alloc_trace+0xce/0x104
[ 153.950084] RSP: 0018:ffff880002817c38 EFLAGS: 00010286
[ 153.955806] RAX: 0000000000000000 RBX: ffff880002fde700 RCX:
000000000000413a
[ 153.961550] RDX: 0000000000004139 RSI: 00000000000000d0 RDI:
ffff88017b001900
[ 153.967290] RBP: ff880179b08d8000 R08: 0000000000015520 R09:
0000000000000000
[ 153.972999] R10: ffff880178ac9300 R11: ffff8f908b8ca098 R12:
00000000000000d0
[ 153.978703] R13: 0000000000000078 R14: ffffffff81130482 R15:
ffff88017b001900
[ 153.984390] FS: 00007f129d48f8c0(0000) GS:ffff88017fc00000(0000)
knlGS:0000000000000000
[ 153.990119] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 153.995815] CR2: 00007fb445799148 CR3: 0000000075c3a000 CR4:
00000000001007f0
[ 154.001525] Stack:
[ 154.007175] ffff880178b10af0 ffff880002fde700 ffff880178b10af0
ffff880002fde700
[ 154.012935] ffffffffa009276d ffffffffa00934b3 ffff880002817df4
ffffffff81130482
[ 154.018685] ffff880178b10af0 ffffffffa01216ef ffff880002fde700
ffff880178b10af0
[ 154.024395] Call Trace:
[ 154.030051] [<ffffffffa009276d>] ? i915_wedged_get+0x11/0x11 [i915]
[ 154.035746] [<ffffffffa00934b3>] ? i915_ring_missed_irq_set+0x3f/0x3f
[i915]
[ 154.041420] [<ffffffff81130482>] ? simple_attr_open+0x33/0x9e
[ 154.047080] [<ffffffffa009282a>] ? i915_ring_missed_irq_fops_open+0x1a/0x1a
[i915]
[ 154.052762] [<ffffffff81112001>] ? do_dentry_open+0x184/0x2a6
[ 154.058414] [<ffffffff8111deec>] ? do_last+0x942/0xb75
[ 154.064010] [<ffffffff8111c301>] ? __inode_permission+0x53/0x6e
[ 154.069612] [<ffffffff8111e251>] ? link_path_walk+0x51/0x74a
[ 154.075172] [<ffffffff8111f6bc>] ? path_openat+0x20f/0x560
[ 154.080770] [<ffffffff81120597>] ? do_filp_open+0x2b/0x6f
[ 154.086253] [<ffffffff81129ba1>] ? __alloc_fd+0x58/0xe3
[ 154.091686] [<ffffffff811131d6>] ? do_sys_open+0x14b/0x1cf
[ 154.097105] [<ffffffff8179f452>] ? system_call_fastpath+0x12/0x17
[ 154.102508] Code: 7e 08 45 89 e1 49 89 d8 4c 89 e9 48 89 ea 4c 89 fe 41 ff
16 49 83 c6 10 49 83 3e 00 eb 30 eb 32 49 63 47 20 4d 8b 07 48 8d 4a 01 <48> 8b
5c 05 00 48 89 e8 65 49 0f c7 08 0f 94 c0 84 c0 75 89 e9
[ 154.108791] RIP [<ffffffff8110dc7e>] kmem_cache_alloc_trace+0xce/0x104
[ 154.114424] RSP <ffff880002817c38>
[ 154.120036] ---[ end trace 773048983473776d ]---
==Reproduce steps==
----------------------------
1. ./gem_reset_stats --run-subtest ban-blt</pre>
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