linux-ext4 - Re: ext4 endless "orphan list check failed!" spew/lockup

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Date:	Tue, 1 Dec 2015 19:05:36 +0100
From:	Vegard Nossum <vegard.nossum@...cle.com>
To:	"Theodore Ts'o" <tytso@....edu>,
	Andreas Dilger <adilger.kernel@...ger.ca>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: ext4 endless "orphan list check failed!" spew/lockup

On 12/01/2015 06:30 PM, Vegard Nossum wrote:
> On 12/01/2015 05:42 PM, Vegard Nossum wrote:
>> Mounting the attached filesystem image (fuzzed) on latest linus/master
>> causes an endless stream of the following output on the console:
>>
>> EXT4-fs (loop0): Inode 5 (ffff8800153ed720): orphan list check failed!
>
> Just wanted to add that on a kernel with linked list debugging I also
> see an endless stream of the following warning, which could be related?
>
> WARNING: CPU: 0 PID: 924 at lib/list_debug.c:36 __list_add+0xf9/0x100()
> list_add double add: new=00000000dfba0070, prev=00000000dffba970,
> next=00000000dfba0070.
> CPU: 0 PID: 924 Comm: mount.exe Tainted: G        W       4.4.0-rc3 #1
> Stack:
>   df7f59b0 60075642 6071c3ae 00000009
>   df7f5a30 600bc4fe df7f59c0 603f1e5f
>   df7f5a20 600412cd df7f59e0 6040d859
> Call Trace:
>   [<60029f9b>] show_stack+0xdb/0x1a0
>   [<603f1e5f>] dump_stack+0x2a/0x3b
>   [<600412cd>] warn_slowpath_common+0x9d/0xf0
>   [<600413f4>] warn_slowpath_fmt+0x94/0xa0
>   [<6040d859>] __list_add+0xf9/0x100
>   [<601b28d4>] ext4_fill_super+0x3e04/0x4040

This is

fs/ext4/super.c:2269, ext4_orphan_cleanup():

list_add(&EXT4_I(inode)->i_orphan, &EXT4_SB(sb)->s_orphan);


Vegard
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