linux-kernel - [lkp] [freezer] e8de7ec5cc: WARNING: CPU: 1 PID: 699 at include/linux/freezer.h:62 svc

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Date:	Mon, 02 Nov 2015 16:26:49 +0800
From:	kernel test robot <ying.huang@...ux.intel.com>
TO:	Jiri Kosina <jkosina@...e.cz>
CC:	0day robot <fengguang.wu@...el.com>
Subject: [lkp] [freezer] e8de7ec5cc: WARNING: CPU: 1 PID: 699 at
 include/linux/freezer.h:62 svc_recv+0x3eb/0x80c()

FYI, we noticed the below changes on

https://github.com/0day-ci/linux Jiri-Kosina/PM-vfs-use-filesystem-freezing-instead-of-kthread-freezer/20151030-215223
commit e8de7ec5cc871dacba9149fe6b5aacc545baef2c ("freezer: warn if anyone is trying to use freezer on kthreads")


+------------------------------------------------+------------+------------+
|                                                | f5121659bb | e8de7ec5cc |
+------------------------------------------------+------------+------------+
| boot_successes                                 | 15         | 11         |
| boot_failures                                  | 0          | 3          |
| WARNING:at_include/linux/freezer.h:#svc_recv() | 0          | 3          |
| backtrace:nfs4_callback_svc                    | 0          | 3          |
+------------------------------------------------+------------+------------+


wget --local-encoding=UTF-8 --retry-connrefused --waitretry 1000 --tries 1000 http://inn:80/~lkp/cgi-bin/lkp-jobfile-append-var?job_file=/lkp/scheduled/vm-kbuild-1G-16/bisect_boot-1-debian-x86_64-2015-02-07.cgz-x86_64-acpi-redef-e8de7ec5cc871dacba9149fe6b5aacc545baef2c-20151031-105622-1k6mt59-0.yaml&job_state=running -q -O /dev/null
wait for background monitors: oom-killer watchdog
wget --local-encoding=UTF-8 --retry-connrefused --waitretry 1000 --tries 1000 http://inn:80/~lkp/cgi-bin/lkp-jobfile-append-var?job_file=/lkp/scheduled/vm-kbuild-1G-16/bisect_boot-1-debian-x86_64-2015-02-07.cgz-x86_64-acpi-redef-e8de7ec5cc871dacba9149fe6b5aacc545baef2c-20151031-105622-1k6mt59-0.yaml&loadavg=0.68 0.16 0.05 1/118 817&start_time=1446232943&end_time=1446232944&version=/lkp/lkp/.src-20151030-185949& -q -O /dev/null
[   25.953285] WARNING: CPU: 1 PID: 699 at include/linux/freezer.h:62 svc_recv+0x3eb/0x80c()
[   25.954875] CPU: 1 PID: 699 Comm: nfsv4.0-svc Not tainted 4.3.0-rc7-00003-ge8de7ec #304
[   25.956198] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[   25.958815]  0000000000000000 ffff88003ed9bd78 ffffffff813d2273 0000000000000000
[   25.960135]  ffff88003ed9bdb0 ffffffff8107708b ffffffff81c4c17c ffff88003e0d2000
[   25.961434]  ffff88003eee8000 ffff88003f3df240 7fffffffffffffff ffff88003ed9bdc0
[   25.962727] Call Trace:
[   25.963151]  [<ffffffff813d2273>] dump_stack+0x4b/0x6c
[   25.963999]  [<ffffffff8107708b>] warn_slowpath_common+0x8a/0xa3
[   25.965015]  [<ffffffff81c4c17c>] ? svc_recv+0x3eb/0x80c
[   25.965888]  [<ffffffff8107716b>] warn_slowpath_null+0x15/0x17
[   25.966839]  [<ffffffff81c4c17c>] svc_recv+0x3eb/0x80c
[   25.967687]  [<ffffffff81c78ca7>] ? __schedule+0x5cf/0x823
[   25.968629]  [<ffffffff8123f93a>] ? nfs_callback_authenticate+0x29/0x29
[   25.969704]  [<ffffffff8123f95d>] nfs4_callback_svc+0x23/0x3c
[   25.970644]  [<ffffffff8108e0ad>] kthread+0xf6/0xfe
[   25.971448]  [<ffffffff8108dfb7>] ? __kthread_parkme+0x82/0x82
[   25.972432]  [<ffffffff81c7dfdf>] ret_from_fork+0x3f/0x70
[   25.973328]  [<ffffffff8108dfb7>] ? __kthread_parkme+0x82/0x82
[   25.974283] ---[ end trace d811f9ece3901e91 ]---
[   25.980080] ------------[ cut here ]------------





Thanks,
Ying Huang

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