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Subject: ext4 file system corruption with v4.19.3 / v4.19.4
From: Guenter Roeck <linux@roeck-us.net>
To: Theodore Ts'o <tytso@mit.edu>,
        Andreas Dilger <adilger.kernel@dilger.ca>
Cc: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org
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Date: Tue, 27 Nov 2018 06:32:08 -0800
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[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