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Date:   Tue, 27 Nov 2018 16:50:05 +0100
From:   Rainer Fiebig <jrf@...lbox.org>
To:     linux-kernel@...r.kernel.org
Cc:     Guenter Roeck <linux@...ck-us.net>, Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        linux-ext4@...r.kernel.org
Subject: Re: ext4 file system corruption with v4.19.3 / v4.19.4

Am Dienstag, 27. November 2018, 06:32:08 schrieb Guenter Roeck:
> [trying again, this time with correct kernel.org address]
> 
> Hi,
> 
> I have seen the following and similar problems several times,
> with both v4.19.3 and v4.19.4:
> 
> Nov 23 04:32:25 mars kernel: [112668.673671] EXT4-fs error (device sdb1):
> ext4_iget:4831: inode #12602889: comm git: bad extra_isize 33661 (inode
> size 256) Nov 23 04:32:25 mars kernel: [112668.675217] Aborting journal on
> device sdb1-8. Nov 23 04:32:25 mars kernel: [112668.676681] EXT4-fs (sdb1):
> Remounting filesystem read-only Nov 23 04:32:25 mars kernel:
> [112668.808886] EXT4-fs error (device sdb1): ext4_iget:4831: inode
> #12602881: comm rm: bad extra_isize 33685 (inode size 256) ...
> 
> Nov 25 00:12:43 saturn kernel: [59377.725984] EXT4-fs error (device sda1):
> ext4_lookup:1578: inode #238034131: comm updatedb.mlocat: deleted inode
> referenced: 238160407 Nov 25 00:12:43 saturn kernel: [59377.766638]
> Aborting journal on device sda1-8. Nov 25 00:12:43 saturn kernel:
> [59377.779372] EXT4-fs (sda1): Remounting filesystem read-only ...
> 
> Nov 24 01:52:31 saturn kernel: [189085.240016] EXT4-fs error (device sda1):
> ext4_lookup:1578: inode #52038457: comm nfsd: deleted inode referenced:
> 52043796 Nov 24 01:52:31 saturn kernel: [189085.263427] Aborting journal on
> device sda1-8. Nov 24 01:52:31 saturn kernel: [189085.275313] EXT4-fs
> (sda1): Remounting filesystem read-only
> 
> 
> The same systems running v4.18.6 never experienced a problem.
> 
> Has anyone else seen similar problems ? Is there anything I can do
> to help tracking down the problem ?
> 
> Thanks,
> Guenter

This is already being discussed here: 
https://bugzilla.kernel.org/show_bug.cgi?id=201685

I guess bisecting between 4.18.0 and 4.19.0 by someone who is proficient in 
this and is affected by the problem would be immensely valuable.

I'm not affected and am a bit reluctant to expose my production system to 
this. ;)

So long!

Rainer Fiebig 

-- 
The truth always turns out to be simpler than you thought.
Richard Feynman
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