linux-kernel - Re: linux-next: Tree for Aug 7 [ call-trace on suspend: ext4

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Date:	Wed, 7 Aug 2013 16:25:14 +0200
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Ext4 Developers List <linux-ext4@...r.kernel.org>,
	"Theodore Ts'o" <tytso@....edu>,
	Linux PM List <linux-pm@...ts.linux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: linux-next: Tree for Aug 7 [ call-trace on suspend: ext4 | pm
 related ? ]

On Wed, Aug 7, 2013 at 7:54 AM, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> Hi all,
>
> Changes since 20130806:
>
> The ext4 tree lost its build failure.
>
> The mvebu tree gained a build failure so I used the version from
> next-20130806.
>
> The akpm tree gained conflicts against the ext4 tree.
>
> ----------------------------------------------------------------------------
>

[ CC ext4 and pm folks ]

I saw this on my 1st suspend which was not successful (2nd and 3rd try
I could suspend and resume):

[ 5467.724074] PM: Syncing filesystems ... done.
[ 5467.973575] PM: Preparing system for mem sleep
[ 5467.974121] Freezing user space processes ...
[ 5487.970574] Freezing of tasks failed after 20.010 seconds (1 tasks
refusing to freeze, wq_busy=0):
[ 5487.970591] DOM Worker      D ffffffff81811820     0  2437      1 0x00000004
[ 5487.970595]  ffff880056ca3ca8 0000000000000002 00000000002d627f
000009af00000002
[ 5487.970598]  ffff880066ede640 ffff880056ca3fd8 ffff880056ca3fd8
ffff880056ca3fd8
[ 5487.970601]  ffff880119f98340 ffff880066ede640 ffff880056ca3ca8
ffff88011fad5118
[ 5487.970604] Call Trace:
[ 5487.970612]  [<ffffffff81144360>] ? __lock_page+0x70/0x70
[ 5487.970615]  [<ffffffff816e8179>] schedule+0x29/0x70
[ 5487.970618]  [<ffffffff816e824f>] io_schedule+0x8f/0xd0
[ 5487.970621]  [<ffffffff8114436e>] sleep_on_page+0xe/0x20
[ 5487.970624]  [<ffffffff816e4be2>] __wait_on_bit+0x62/0x90
[ 5487.970627]  [<ffffffff81144f9b>] ? find_get_pages_tag+0xcb/0x170
[ 5487.970630]  [<ffffffff811444d0>] wait_on_page_bit+0x80/0x90
[ 5487.970633]  [<ffffffff8108a0e0>] ? wake_atomic_t_function+0x40/0x40
[ 5487.970636]  [<ffffffff811445ec>] filemap_fdatawait_range+0x10c/0x190
[ 5487.970640]  [<ffffffff81145ce0>] filemap_write_and_wait_range+0x50/0x80
[ 5487.970644]  [<ffffffff81246c3d>] ext4_sync_file+0x15d/0x340
[ 5487.970648]  [<ffffffff811db8dd>] do_fsync+0x5d/0x90
[ 5487.970651]  [<ffffffff811dbcc0>] SyS_fsync+0x10/0x20
[ 5487.970655]  [<ffffffff816f25ef>] tracesys+0xe1/0xe6
[ 5487.970658]
[ 5487.970659] Restarting tasks ... done.

With yesterday's -next I did not have issues like this.

Any idea?

dmesg and kernel-config attached.

- Sedat -

View attachment "dmesg_3.11.0-rc4-next20130807-1-iniza-small.txt" of type "text/plain" (113016 bytes)

Download attachment "config-3.11.0-rc4-next20130807-1-iniza-small" of type "application/octet-stream" (115606 bytes)