linux-kernel - [thermal/intel_powerclamp] b4d590f251: WARNING:at_kernel/sched/idle.c:#play

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Date:   Sun, 15 Jan 2017 18:28:39 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     xinwu.liu@...el.com
Cc:     rui.zhang@...el.com, edubezval@...il.com, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, "Liu, Xinwu" <xinwu.liu@...el.com>,
        "Zhang, Di" <di.zhang@...el.com>, lkp@...org
Subject: [thermal/intel_powerclamp]  b4d590f251:
 WARNING:at_kernel/sched/idle.c:#play_idle

FYI, we noticed the following commit:

commit: b4d590f2511ecc219ca4a7a3cb81b366b10881ae ("thermal/intel_powerclamp:fix sched_setscheduler fail")
url: https://github.com/0day-ci/linux/commits/xinwu-liu-intel-com/thermal-intel_powerclamp-fix-sched_setscheduler-fail/20170113-231143
base: https://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux.git next

in testcase: idle-inject
with following parameters:

	runtime: 60s
	nr_threads: 200%
	cur_state: 10cp



on test machine: 32 threads Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz with 32G memory

caused below changes:


+-------------------------------------------+------------+------------+
|                                           | cad8f6c4f6 | b4d590f251 |
+-------------------------------------------+------------+------------+
| boot_successes                            | 4          | 1          |
| boot_failures                             | 0          | 3          |
| WARNING:at_kernel/sched/idle.c:#play_idle | 0          | 3          |
+-------------------------------------------+------------+------------+



[   31.795120] 
[   31.796570] ------------[ cut here ]------------
[   31.796573] ------------[ cut here ]------------
[   31.796585] WARNING: CPU: 6 PID: 9077 at kernel/sched/idle.c:298 play_idle+0x3f/0x191
[   31.796594] WARNING: CPU: 15 PID: 9086 at kernel/sched/idle.c:298 play_idle+0x3f/0x191
[   31.796617] Modules linked in:
[   31.796620] Modules linked in:
[   31.796621]  sr_mod
[   31.796623]  sr_mod
[   31.796625]  cdrom


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Kernel Test Robot

View attachment "config-4.10.0-rc2-00008-gb4d590f" of type "text/plain" (101784 bytes)

View attachment "job-script" of type "text/plain" (4246 bytes)

Download attachment "dmesg.xz" of type "application/octet-stream" (25324 bytes)

View attachment "job.yaml" of type "text/plain" (3413 bytes)

View attachment "reproduce" of type "text/plain" (57 bytes)