linux-ext4 - Re: [PATCH 13/13] ntfs3: free the sbi in ->kill

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Date:   Thu, 7 Sep 2023 17:49:54 +0200
From:   Christian Brauner <brauner@...nel.org>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Christoph Hellwig <hch@....de>, Al Viro <viro@...iv.linux.org.uk>,
        Namjae Jeon <linkinjeon@...nel.org>,
        Sungjong Seo <sj1557.seo@...sung.com>,
        Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Konstantin Komarov <almaz.alexandrovich@...agon-software.com>,
        "Darrick J. Wong" <djwong@...nel.org>,
        linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
        ntfs3@...ts.linux.dev, linux-xfs@...r.kernel.org
Subject: Re: [PATCH 13/13] ntfs3: free the sbi in ->kill_sb

On Thu, Sep 07, 2023 at 08:23:09AM -0700, Guenter Roeck wrote:
> On 9/7/23 06:54, Christian Brauner wrote:
> > On Thu, Sep 07, 2023 at 06:05:40AM -0700, Guenter Roeck wrote:
> > > On Wed, Aug 09, 2023 at 03:05:45PM -0700, Christoph Hellwig wrote:
> > > > As a rule of thumb everything allocated to the fs_context and moved into
> > > > the super_block should be freed by ->kill_sb so that the teardown
> > > > handling doesn't need to be duplicated between the fill_super error
> > > > path and put_super.  Implement an ntfs3-specific kill_sb method to do
> > > > that.
> > > > 
> > > > Signed-off-by: Christoph Hellwig <hch@....de>
> > > > Reviewed-by: Christian Brauner <brauner@...nel.org>
> > > 
> > > This patch results in:
> > 
> > The appended patch should fix this. Are you able to test it?
> > I will as well.
> 
> Yes, this patch restores the previous behavior (no more backtrace or crash).

Great, I'll get this fixed in upstream.

> 
> Tested-by: Guenter Roeck <linux@...ck-us.net>
> 
> I say "restore previous behavior" because my simple "recursive copy; partially
> remove copied files" test still fails. That problem apparently existed since
> ntfs3 has been introduced (I see it as far back as v5.15).

I don't think anyone finds that surprising.