From: Christian Rohmann <crohmann@netcologne.de>
To: Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Re: task btrfs-cleaner:770 blocked for more than 120 seconds.
Date: Thu, 18 Feb 2016 13:35:24 +0100 [thread overview]
Message-ID: <56C5BA8C.1020106@netcologne.de> (raw)
In-Reply-To: <20160215034219.2f0df0ce@natsu>
On 02/14/2016 11:42 PM, Roman Mamedov wrote:
> FWIW I had a persistently repeating deadlock on 4.1 and 4.3, but
> after upgrade to 4.4 it no longer happens.
Apparently also with 4.4 there is some sort of blocking happening ...
just at 38580:
---- cut ----
[Wed Feb 17 16:43:48 2016] INFO: task btrfs-cleaner:38580 blocked for
more than 120 seconds.
[Wed Feb 17 16:43:48 2016] Not tainted 4.4.0-customkernel #1
[Wed Feb 17 16:43:48 2016] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Wed Feb 17 16:43:48 2016] btrfs-cleaner D ffff882c27295dc0 0
38580 2 0x00000000
[Wed Feb 17 16:43:48 2016] ffff882c16fa6480 ffff88161a980280
ffff882a3d744000 ffff882a3d743df8
[Wed Feb 17 16:43:48 2016] ffff8815fead7104 ffff882c16fa6480
00000000ffffffff ffff8815fead7108
[Wed Feb 17 16:43:48 2016] ffffffff81559a31 ffff8815fead7100
ffffffff81559cba ffffffff8155b5a0
[Wed Feb 17 16:43:48 2016] Call Trace:
[Wed Feb 17 16:43:48 2016] [<ffffffff81559a31>] ? schedule+0x31/0x80
[Wed Feb 17 16:43:48 2016] [<ffffffff81559cba>] ?
schedule_preempt_disabled+0xa/0x10
[Wed Feb 17 16:43:48 2016] [<ffffffff8155b5a0>] ?
__mutex_lock_slowpath+0x90/0x110
[Wed Feb 17 16:43:48 2016] [<ffffffff8155b63b>] ? mutex_lock+0x1b/0x30
[Wed Feb 17 16:43:48 2016] [<ffffffffa01bf51e>] ?
btrfs_delete_unused_bgs+0xee/0x3f0 [btrfs]
[Wed Feb 17 16:43:48 2016] [<ffffffff81559396>] ? __schedule+0x286/0x8f0
[Wed Feb 17 16:43:48 2016] [<ffffffffa01c6ff7>] ?
cleaner_kthread+0x1a7/0x200 [btrfs]
[Wed Feb 17 16:43:48 2016] [<ffffffffa01c6e50>] ?
check_leaf+0x340/0x340 [btrfs]
[Wed Feb 17 16:43:48 2016] [<ffffffff8108df6f>] ? kthread+0xcf/0xf0
[Wed Feb 17 16:43:48 2016] [<ffffffff8108dea0>] ? kthread_park+0x50/0x50
[Wed Feb 17 16:43:48 2016] [<ffffffff8155d74f>] ? ret_from_fork+0x3f/0x70
[Wed Feb 17 16:43:48 2016] [<ffffffff8108dea0>] ? kthread_park+0x50/0x50
[Wed Feb 17 17:23:48 2016] INFO: task btrfs-cleaner:38580 blocked for
more than 120 seconds.
[Wed Feb 17 17:23:48 2016] Not tainted 4.4.0-customkernel #1
[Wed Feb 17 17:23:48 2016] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Wed Feb 17 17:23:48 2016] btrfs-cleaner D ffff881627a35dc0 0
38580 2 0x00000000
[Wed Feb 17 17:23:48 2016] ffff882c16fa6480 ffff88161a956f00
ffff882a3d744000 ffff882a3d743df8
[Wed Feb 17 17:23:48 2016] ffff8815fead7104 ffff882c16fa6480
00000000ffffffff ffff8815fead7108
[Wed Feb 17 17:23:48 2016] ffffffff81559a31 ffff8815fead7100
ffffffff81559cba ffffffff8155b5a0
[Wed Feb 17 17:23:48 2016] Call Trace:
[Wed Feb 17 17:23:48 2016] [<ffffffff81559a31>] ? schedule+0x31/0x80
[Wed Feb 17 17:23:48 2016] [<ffffffff81559cba>] ?
schedule_preempt_disabled+0xa/0x10
[Wed Feb 17 17:23:48 2016] [<ffffffff8155b5a0>] ?
__mutex_lock_slowpath+0x90/0x110
[Wed Feb 17 17:23:48 2016] [<ffffffff8155b63b>] ? mutex_lock+0x1b/0x30
[Wed Feb 17 17:23:48 2016] [<ffffffffa01bf51e>] ?
btrfs_delete_unused_bgs+0xee/0x3f0 [btrfs]
[Wed Feb 17 17:23:48 2016] [<ffffffff81559396>] ? __schedule+0x286/0x8f0
[Wed Feb 17 17:23:48 2016] [<ffffffffa01c6ff7>] ?
cleaner_kthread+0x1a7/0x200 [btrfs]
[Wed Feb 17 17:23:48 2016] [<ffffffffa01c6e50>] ?
check_leaf+0x340/0x340 [btrfs]
[Wed Feb 17 17:23:48 2016] [<ffffffff8108df6f>] ? kthread+0xcf/0xf0
[Wed Feb 17 17:23:48 2016] [<ffffffff8108dea0>] ? kthread_park+0x50/0x50
[Wed Feb 17 17:23:48 2016] [<ffffffff8155d74f>] ? ret_from_fork+0x3f/0x70
[Wed Feb 17 17:23:48 2016] [<ffffffff8108dea0>] ? kthread_park+0x50/0x50
[Wed Feb 17 17:57:48 2016] INFO: task btrfs-cleaner:38580 blocked for
more than 120 seconds.
[Wed Feb 17 17:57:48 2016] Not tainted 4.4.0-customkernel #1
[Wed Feb 17 17:57:48 2016] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
[Wed Feb 17 17:57:48 2016] btrfs-cleaner D ffff881627a95dc0 0
38580 2 0x00000000
[Wed Feb 17 17:57:48 2016] ffff882c16fa6480 ffff88161a980fc0
ffff882a3d744000 ffff882a3d743df8
[Wed Feb 17 17:57:48 2016] ffff8815fead7104 ffff882c16fa6480
00000000ffffffff ffff8815fead7108
[Wed Feb 17 17:57:48 2016] ffffffff81559a31 ffff8815fead7100
ffffffff81559cba ffffffff8155b5a0
[Wed Feb 17 17:57:48 2016] Call Trace:
[Wed Feb 17 17:57:48 2016] [<ffffffff81559a31>] ? schedule+0x31/0x80
[Wed Feb 17 17:57:48 2016] [<ffffffff81559cba>] ?
schedule_preempt_disabled+0xa/0x10
[Wed Feb 17 17:57:48 2016] [<ffffffff8155b5a0>] ?
__mutex_lock_slowpath+0x90/0x110
[Wed Feb 17 17:57:48 2016] [<ffffffff8155b63b>] ? mutex_lock+0x1b/0x30
[Wed Feb 17 17:57:48 2016] [<ffffffffa01bf51e>] ?
btrfs_delete_unused_bgs+0xee/0x3f0 [btrfs]
[Wed Feb 17 17:57:48 2016] [<ffffffff81559396>] ? __schedule+0x286/0x8f0
[Wed Feb 17 17:57:48 2016] [<ffffffffa01c6ff7>] ?
cleaner_kthread+0x1a7/0x200 [btrfs]
[Wed Feb 17 17:57:48 2016] [<ffffffffa01c6e50>] ?
check_leaf+0x340/0x340 [btrfs]
[Wed Feb 17 17:57:48 2016] [<ffffffff8108df6f>] ? kthread+0xcf/0xf0
[Wed Feb 17 17:57:48 2016] [<ffffffff8108dea0>] ? kthread_park+0x50/0x50
[Wed Feb 17 17:57:48 2016] [<ffffffff8155d74f>] ? ret_from_fork+0x3f/0x70
[Wed Feb 17 17:57:48 2016] [<ffffffff8108dea0>] ? kthread_park+0x50/0x50
---- cut ----
next prev parent reply other threads:[~2016-02-18 12:35 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-02 20:20 task btrfs-cleaner:770 blocked for more than 120 seconds Михаил Гаврилов
2016-02-03 0:41 ` Liu Bo
2016-02-03 2:45 ` Chris Murphy
[not found] ` <CABXGCsOAyYa96E965ruKp9evCY3FrCdBr-GTPvCws5VqmjUC5Q@mail.gmail.com>
2016-02-03 4:37 ` Chris Murphy
2016-02-03 4:48 ` Chris Murphy
2016-02-10 20:39 ` Михаил Гаврилов
2016-02-10 21:23 ` Chris Murphy
2016-02-11 19:18 ` Liu Bo
2016-02-11 21:03 ` Михаил Гаврилов
2016-02-12 3:22 ` Liu Bo
2016-02-12 3:38 ` Chris Murphy
2016-02-12 20:35 ` Liu Bo
2016-02-12 19:15 ` Михаил Гаврилов
2016-02-12 20:34 ` Liu Bo
2016-02-13 19:23 ` Михаил Гаврилов
2016-02-14 21:32 ` Liu Bo
2016-02-14 22:42 ` Roman Mamedov
2016-02-18 12:35 ` Christian Rohmann [this message]
2016-02-18 16:59 ` Liu Bo
2016-02-19 16:00 ` Christian Rohmann
2016-02-19 16:42 ` Chris Murphy
[not found] ` <CABXGCsOVeEBn9A=Wj6VtAEsban6LKj6B958gN8JqK9omLjDt9A@mail.gmail.com>
2016-03-16 9:01 ` Roman Mamedov
2016-03-16 19:54 ` Михаил Гаврилов
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