linux-ext4 - Re: xfstests global-ext4/1k generic/219 failure due to dmesg warning of "circular locking dependency detected"

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Date:   Mon, 12 Oct 2020 13:50:01 +0200
From:   Jan Kara <jack@...e.cz>
To:     Ritesh Harjani <riteshh@...ux.ibm.com>
Cc:     linux-ext4@...r.kernel.org, Jan Kara <jack@...e.cz>,
        Eric Whitney <enwlinux@...il.com>,
        Theodore Ts'o <tytso@....edu>
Subject: Re: xfstests global-ext4/1k generic/219 failure due to dmesg warning
 of "circular locking dependency detected"

On Mon 12-10-20 13:03:47, Jan Kara wrote:
> Hi!
> 
> On Fri 09-10-20 22:59:13, Ritesh Harjani wrote:
> > While running generic/219 fstests on a 1k blocksize on x86 box, I see
> > below dmesg warning msg and generic/219 fails. I haven't yet analyzed
> > it, but I remember I have seen such warnings before as well in my testing.
> > I was wondering if others have also seen it in their testing or not and
> > if this is any known issue?
> 
> I don't remember seeing this lately. What mkfs options do you use for your
> test? I can see below that mount options are apparently:
> 
> acl,user_xattr,block_validity,usrquota,grpquota

BTW, I've tried and the problem indeed does *not* reproduce in my test KVM
setup with 1k block size and default mkfs options. But it does reproduce
with mkfs option "-O quota". So it indeed seems the lockdep annotation is
somehow broken in this config. I'll have a look...

								Honza
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR