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Date:   Tue, 27 Nov 2018 15:48:19 +0100
From:   Marek Habersack <grendel@...stedcode.net>
To:     Guenter Roeck <linux@...ck-us.net>, Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>
Cc:     linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: ext4 file system corruption with v4.19.3 / v4.19.4

On 27/11/2018 15:32, Guenter Roeck wrote:
Hi,

You might try to see if you have CONFIG_SCSI_MQ_DEFAULT=yes in your kernel config. Starting with 4.19.1 it somehow
interferes with ext4 and causes problems similar to the ones you list below. Ever since I disabled MQ (either recompile
your kernel or add `scsi_mod.use_blk_mq=0` to the kernel command line) none of those errors came back.

hope it helps,

marek
> [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
> 

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