linux-kernel - Re: [PATCH 2/2] virtiofs: Improve error handling in virtio_fs_get

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

Message-ID: <ZY6Iir/idOZBiREy@casper.infradead.org>
Date: Fri, 29 Dec 2023 08:51:22 +0000
From: Matthew Wilcox <willy@...radead.org>
To: Markus Elfring <Markus.Elfring@....de>
Cc: virtualization@...ts.linux.dev, linux-fsdevel@...r.kernel.org,
	kernel-janitors@...r.kernel.org, Miklos Szeredi <miklos@...redi.hu>,
	Stefan Hajnoczi <stefanha@...hat.com>,
	Vivek Goyal <vgoyal@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] virtiofs: Improve error handling in
 virtio_fs_get_tree()

On Fri, Dec 29, 2023 at 09:38:47AM +0100, Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Fri, 29 Dec 2023 09:15:07 +0100
> 
> The kfree() function was called in two cases by
> the virtio_fs_get_tree() function during error handling
> even if the passed variable contained a null pointer.

So what?  kfree(NULL) is perfectly acceptable.  Are you trying to
optimise an error path?