Am Dienstag, 27. November 2018, 15:48:19 schrieb Marek Habersack:

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

Unfortunately, this doesn't seem to work in every case: 
https://bugzilla.kernel.org/show_bug.cgi?id=201685#c54

And I'm using a defconfig-4.19.3 (meaning: CONFIG_SCSI_MQ_DEFAULT=yes) in a VM 
and I'm not seeing those errors there. OK, it's a VM - but anyway.

The definite cause of this can only be found by bisecting, IMO. And it needs 
to be pinned down because else some feeling of insecurity will remain.

So long!

Rainer Fiebig

quoted

[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

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