linux-kernel - Re: [PATCH] scsi: core: Correct wrong kfree() usage for `kobj->name`

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Message-ID: <2026011614-exile-raisin-0ec4@gregkh>
Date: Fri, 16 Jan 2026 10:00:11 +0100
From: Greg KH <gregkh@...uxfoundation.org>
To: Tzung-Bi Shih <tzungbi@...nel.org>
Cc: "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
	"Martin K. Petersen" <martin.petersen@...cle.com>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] scsi: core: Correct wrong kfree() usage for `kobj->name`

On Fri, Jan 16, 2026 at 08:13:59AM +0000, Tzung-Bi Shih wrote:
> `kobj->name` should be freed by kfree_const()[1][2].  Correct it.
> 
> [1] https://elixir.bootlin.com/linux/v6.18/source/lib/kasprintf.c#L41
> [2] https://elixir.bootlin.com/linux/v6.18/source/lib/kobject.c#L695
> 
> Cc: stable@...r.kernel.org
> Fixes: b49493f99690 ("Fix a memory leak in scsi_host_dev_release()")
> Signed-off-by: Tzung-Bi Shih <tzungbi@...nel.org>
> ---
>  drivers/scsi/hosts.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
> index e047747d4ecf..50ec782cf9f4 100644
> --- a/drivers/scsi/hosts.c
> +++ b/drivers/scsi/hosts.c
> @@ -373,7 +373,7 @@ static void scsi_host_dev_release(struct device *dev)
>  		 * name as well as the proc dir structure are leaked.
>  		 */
>  		scsi_proc_hostdir_rm(shost->hostt);
> -		kfree(dev_name(&shost->shost_dev));
> +		kfree_const(dev_name(&shost->shost_dev));

Shouldn't the struct device name be freed by the driver core for this
device when it goes out of scope?  Why is it being manually freed here
at all?

thanks,

greg k-h