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

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Date:	Tue, 1 Dec 2015 18:30:54 +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 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
  [<601094ce>] mount_bdev+0x1fe/0x230
  [<601a7425>] ext4_mount+0x45/0x50
  [<60109763>] mount_fs+0x33/0x210
  [<60128fc4>] vfs_kern_mount+0x74/0x170
  [<6012a900>] do_mount+0x260/0x1010
  [<6012bb9b>] SyS_mount+0xab/0x120

Unfortunately I don't have the debug info anymore, but I could try to
rebuild and see if it triggers again if necessary.

Thanks,


Vegard
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