linux-kernel - Re: [PATCH] fs/ntfs3: add checks for allocation failure

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Message-ID: <20210824165730.GN7722@kadam>
Date:   Tue, 24 Aug 2021 19:57:30 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Kari Argillander <kari.argillander@...il.com>
Cc:     Konstantin Komarov <almaz.alexandrovich@...agon-software.com>,
        ntfs3@...ts.linux.dev, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] fs/ntfs3: add checks for allocation failure

On Tue, Aug 24, 2021 at 07:02:44PM +0300, Kari Argillander wrote:
> On Tue, Aug 24, 2021 at 02:52:36PM +0300, Dan Carpenter wrote:
> > Add a check for when the kzalloc() in init_rsttbl() fails.  Some of
> > the callers checked for NULL and some did not.  I went down the call
> > tree and added NULL checks where ever they were missing.
> > 
> > Fixes: b46acd6a6a62 ("fs/ntfs3: Add NTFS journal")
> > Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> 
> Seems ok. It is not easist file to follow. log_replay is monster and
> it should be refactor in some point. I'm certain that many more bugs
> will be founded there. Also at least community does not have very good
> testing interface for this. 

There is a way to do allocation fault injection, but I haven't messed
with it.

My guess is that syzbot will soon start reporting a ton of bugs.  ;)

regards,
dan carpenter