linux-kernel - [lkp] [btrfs] 84f0ca2788: BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:21

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Message-ID: <87oag9x6l9.fsf@yhuang-dev.intel.com>
Date:	Thu, 08 Oct 2015 13:38:42 +0800
From:	kernel test robot <ying.huang@...ux.intel.com>
TO:	Zhao Lei <zhaolei@...fujitsu.com>
CC:	0day robot <fengguang.wu@...el.com>
Subject: [lkp] [btrfs] 84f0ca2788: BUG: sleeping function called from
 invalid context at kernel/locking/rwsem.c:21

FYI, we noticed the below changes on

git://internal_mailing_list_patch_tree Zhao-Lei/btrfs-Fix-lost-data-profile-caused-by-auto-removing-bg
commit 84f0ca2788dcdb47dca78a24bf67ad5ef30f761d ("btrfs: Fix lost-data-profile caused by auto removing bg")


[   41.439047] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[   41.448633] NFSD: starting 90-second grace period (net ffffffff81ddea00)
[   43.725508] ses 8:0:12:0: Attached Enclosure device
[   71.263805] BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:21
[   71.273869] in_atomic(): 1, irqs_disabled(): 0, pid: 978, name: btrfs-cleaner
[   71.281226] CPU: 3 PID: 978 Comm: btrfs-cleaner Not tainted 4.3.0-rc3-00001-g84f0ca2 #1
[   71.289551] Hardware name: Supermicro X8DTN/X8DTN, BIOS 4.6.3 01/06/2010
[   71.296452]  0000000000000015 ffff880229e6bda8 ffffffff81402802 ffffffff81b88850
[   71.304477]  ffff880229e6bdb8 ffffffff81099368 ffff880229e6bde0 ffffffff81099402
[   71.312499]  ffff88043cf8c0a0 ffff88043cf8d400 ffff88043cf8d520 ffff880229e6bdf8
[   71.320524] Call Trace:
[   71.323194]  [<ffffffff81402802>] dump_stack+0x4b/0x69
[   71.328534]  [<ffffffff81099368>] ___might_sleep+0xe8/0x130
[   71.337648]  [<ffffffff81099402>] __might_sleep+0x52/0xb0
[   71.343249]  [<ffffffff818abc00>] down_read+0x20/0x40
[   71.348522]  [<ffffffffa063dfeb>] btrfs_delete_unused_bgs+0xbb/0x440 [btrfs]
[   71.355803]  [<ffffffffa064692f>] cleaner_kthread+0x1ef/0x260 [btrfs]
[   71.362459]  [<ffffffffa0646740>] ? write_all_supers+0xab0/0xab0 [btrfs]
[   71.370190]  [<ffffffff81092eef>] kthread+0xef/0x110
[   71.375354]  [<ffffffff81092e00>] ? kthread_park+0x60/0x60
[   71.381043]  [<ffffffff818ae11f>] ret_from_fork+0x3f/0x70
[   71.386633]  [<ffffffff81092e00>] ? kthread_park+0x60/0x60
<6>[    0.000000] Initializing cgroup subsys cpuset
<6>[    0.000000] Initializing cgroup subsys cpu
<5>[    0.000000] Linux version 4.3.0-rc3-00001-g84f0ca2 (kbuild@...-nex05) (gcc version 4.9.2 (Debian 4.9.2-10) ) #1 SMP Sat Oct 3 04:21:32 CST 2015


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,
Ying Huang

View attachment "config-4.3.0-rc3-00001-g84f0ca2" of type "text/plain" (141579 bytes)

Download attachment "kmsg.xz" of type "application/x-xz" (32312 bytes)

View attachment "job.yaml" of type "text/plain" (3543 bytes)

View attachment "reproduce" of type "text/plain" (405 bytes)