linux-kernel - Re: [PATCH][V2] btrfs: remove redundant inode null check

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Tue, 20 Dec 2016 17:27:52 +0100
From:   David Sterba <dsterba@...e.cz>
To:     Colin King <colin.king@...onical.com>
Cc:     Chris Mason <clm@...com>, Josef Bacik <jbacik@...com>,
        David Sterba <dsterba@...e.com>, linux-btrfs@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][V2] btrfs: remove redundant inode null check

On Tue, Dec 20, 2016 at 04:18:37PM +0000, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> The check for a null inode is redundant since the function
> is a callback for exportfs, which will itself crash if
> dentry->d_inode or parent->d_inode is NULL.  Removing the
> null check makes this consistent with other file systems.
> 
> Also remove the redundant null dir check too.
> 
> Found with static analysis by CoverityScan, CID 1389472
> 
> Kudos to Jeff Mahoney for reviewing and explaining the error in
> my original patch (most of this explanation went into the above
> commit message) and David Sterba for pointing out that the dir
> check is also redundant.
> 
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Reviewed-by: David Sterba <dsterba@...e.com>

Added to cleanups queue, thanks.