linux-kernel - Re: [PATCH 1/3] spi: fix resource leak for drivers without .remove callback

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: <20201119154139.GC5554@sirena.org.uk>
Date:   Thu, 19 Nov 2020 15:41:39 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, kernel@...gutronix.de,
        linux-spi@...r.kernel.org
Subject: Re: [PATCH 1/3] spi: fix resource leak for drivers without .remove
 callback

On Thu, Nov 19, 2020 at 04:35:40PM +0100, Uwe Kleine-König wrote:

> Yes, I thought that this is not the final fix. I just sent the minimal
> change to prevent the imbalance. So if I understand correctly, I will
> have to respin with the following squashed into patch 1:

> -	if (sdrv->probe || sdrv->remove) {
> -		sdrv->driver.probe = spi_drv_probe;
> -		sdrv->driver.remove = spi_drv_remove;
> -	}
> +	sdrv->driver.probe = spi_drv_probe;
> +	sdrv->driver.remove = spi_drv_remove;
>  	if (sdrv->shutdown)
>  		sdrv->driver.shutdown = spi_drv_shutdown;
>  	return driver_register(&sdrv->driver);

I think so, I'd need to see the full patch to check of course.

> (Not sure this makes a difference in real life, are there drivers
> without a .probe callback?)

Your changelog seemed to say that it would make remove mandatory.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)