Bug 86090 - [BDW]igt/tools_test causes WARNING: CPU: 1 PID: 10647 at fs/open.c:705 do_dentry_open+0x131/0x2a6()
Summary: [BDW]igt/tools_test causes WARNING: CPU: 1 PID: 10647 at fs/open.c:705 do_den...
Status: CLOSED WORKSFORME
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: All Linux (All)
: medium normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-11-10 05:53 UTC by lu hua
Modified: 2017-10-06 14:34 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
run log (6.24 KB, text/plain)
2014-11-10 05:53 UTC, lu hua 		no flags Details
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Description lu hua 2014-11-10 05:53:47 UTC 
Created attachment 109186 [details]
run log

==System Environment==
--------------------------
Regression: not sure 
Non-working platforms: BDW

==kernel==
--------------------------
drm-intel-nightly/b921a5e434f541c6d96378838df47b4259cc3489

==Bug detailed description==
Run automation testing, It causes WARNING: CPU: 1 PID: 10647 at fs/open.c:705 do_dentry_open+0x131/0x2a6(). I can't reproduce it manually.

run log:

Dmesg:
<6>[ 2093.283470] drm_kms_helper: drm: unregistered panic notifier
<4>[ 2093.304605] Modules linked in: parport_pc parport dm_mod ac acpi_cpufreq i915(-) button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[ 2093.304616] CPU: 1 PID: 10647 Comm: intel_reg_read Tainted: G        W      3.18.0-rc3_drm-intel-nightly_b921a5_20141109+ #1342
<4>[ 2093.307634] Modules linked in: parport_pc parport dm_mod ac acpi_cpufreq i915(-) button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[ 2093.307645] CPU: 1 PID: 10648 Comm: intel_reg_dumpe Tainted: G        W      3.18.0-rc3_drm-intel-nightly_b921a5_20141109+ #1342


            "dmesg": "[ 2093.304596] ------------[ cut here ]------------\n[ 2093.304604] WARNING: CPU: 1 PID: 10647 at fs/open.c:705 do_dentry_open+0x131/0x2a6()\n[ 2093.304605] Modules linked in: parport_pc parport dm_mod ac acpi_cpufreq i915(-) button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea\n[ 2093.304616] CPU: 1 PID: 10647 Comm: intel_reg_read Tainted: G        W      3.18.0-rc3_drm-intel-nightly_b921a5_20141109+ #1342\n[ 2093.304618]  0000000000000000 0000000000000009 ffffffff81789002 0000000000000000\n[ 2093.304620]  ffffffff810368cc ffff8800a79ad440 ffffffff8110a3da 0000000000000001\n[ 2093.304622]  ffff880142cf5200 ffff8800a79ad440 00000000ffffffed 0000000000000000\n[ 2093.304624] Call Trace:\n[ 2093.304630]  [<ffffffff81789002>] ? dump_stack+0x41/0x51\n[ 2093.304633]  [<ffffffff810368cc>] ? warn_slowpath_common+0x78/0x90\n[ 2093.304635]  [<ffffffff8110a3da>] ? do_dentry_open+0x131/0x2a6\n[ 2093.304637]  [<ffffffff8110a3da>] ? do_dentry_open+0x131/0x2a6\n[ 2093.304640]  [<ffffffff8111774d>] ? do_last+0x942/0xb75\n[ 2093.304642]  [<ffffffff81114436>] ? __inode_permission+0x53/0x6e\n[ 2093.304645]  [<ffffffff8111455b>] ? link_path_walk+0x51/0x74a\n[ 2093.304647]  [<ffffffff81117bad>] ? path_openat+0x22d/0x5b9\n[ 2093.304650]  [<ffffffff8111872b>] ? user_path_at_empty+0x54/0x7d\n[ 2093.304652]  [<ffffffff811187da>] ? do_filp_open+0x2d/0x75\n[ 2093.304656]  [<ffffffff81121f75>] ? __alloc_fd+0x58/0xe3\n[ 2093.304658]  [<ffffffff8110b5a0>] ? do_sys_open+0x14b/0x1cf\n[ 2093.304661]  [<ffffffff8178e692>] ? system_call_fastpath+0x12/0x17\n[ 2093.304662] ---[ end trace ef11e8ec500dbfa2 ]---\n[ 2093.307626] ------------[ cut here ]------------\n[ 2093.307633] WARNING: CPU: 1 PID: 10648 at fs/open.c:705 do_dentry_open+0x131/0x2a6()\n[ 2093.307634] Modules linked in: parport_pc parport dm_mod ac acpi_cpufreq i915(-) button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea\n[ 2093.307645] CPU: 1 PID: 10648 Comm: intel_reg_dumpe Tainted: G        W      3.18.0-rc3_drm-intel-nightly_b921a5_20141109+ #1342\n[ 2093.307647]  0000000000000000 0000000000000009 ffffffff81789002 0000000000000000\n[ 2093.307649]  ffffffff810368cc ffff8800a79ad440 ffffffff8110a3da 0000000000000001\n[ 2093.307651]  ffff880143344900 ffff8800a79ad440 00000000ffffffed 0000000000000000\n[ 2093.307654] Call Trace:\n[ 2093.307659]  [<ffffffff81789002>] ? dump_stack+0x41/0x51\n[ 2093.307663]  [<ffffffff810368cc>] ? warn_slowpath_common+0x78/0x90\n[ 2093.307665]  [<ffffffff8110a3da>] ? do_dentry_open+0x131/0x2a6\n[ 2093.307667]  [<ffffffff8110a3da>] ? do_dentry_open+0x131/0x2a6\n[ 2093.307670]  [<ffffffff8111774d>] ? do_last+0x942/0xb75\n[ 2093.307676]  [<ffffffff81114436>] ? __inode_permission+0x53/0x6e\n[ 2093.307678]  [<ffffffff8111455b>] ? link_path_walk+0x51/0x74a\n[ 2093.307681]  [<ffffffff81117bad>] ? path_openat+0x22d/0x5b9\n[ 2093.307683]  [<ffffffff8111872b>] ? user_path_at_empty+0x54/0x7d\n[ 2093.307686]  [<ffffffff811187da>] ? do_filp_open+0x2d/0x75\n[ 2093.307689]  [<ffffffff81121f75>] ? __alloc_fd+0x58/0xe3\n[ 2093.307691]  [<ffffffff8110b5a0>] ? do_sys_open+0x14b/0x1cf\n[ 2093.307695]  [<ffffffff8178e692>] ? system_call_fastpath+0x12/0x17\n[ 2093.307696] ---[ end trace ef11e8ec500dbfa3 ]---",
Comment 1 Chris Wilson 2014-11-10 07:55:52 UTC 
Please attach the full dmesg.

And will someone shoot piglit, these failure reports have become worse.
Comment 2 lu hua 2014-11-11 07:57:56 UTC 
I am unable reproduce it manually. Run this case more than 30 cycles, it doesn't happen. And I do same action as automation, it also works well.
Up to now, I only meet once on automation as comment 0's description, if meet again, I will update it.
Comment 3 Chris Wilson 2014-11-11 08:07:05 UTC 
I'm off a mood to just close this unless we can reproduce it. The WARN here is not from the gfx stack, so it is likely to not be our bug.

EXCEPT: it was not the first warning... Hence why I wanted the full dmesg and piglit is proving to be less than useful.
Comment 4 Elizabeth 2017-10-06 14:34:03 UTC 
Closing old verified.

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