linux-kernel - Re: [PATCH v3 5/9] dmaengine: idxd: Add missing cleanups in cleanup internals

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: <1deab9b3-4447-4b21-87ce-7d787f43ebc1@intel.com>
Date: Mon, 10 Mar 2025 08:34:05 -0700
From: Dave Jiang <dave.jiang@...el.com>
To: Shuai Xue <xueshuai@...ux.alibaba.com>, vinicius.gomes@...el.com,
 Markus.Elfring@....de, fenghuay@...dia.com, vkoul@...nel.org
Cc: dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 5/9] dmaengine: idxd: Add missing cleanups in cleanup
 internals



On 3/8/25 11:20 PM, Shuai Xue wrote:
> The idxd_cleanup_internals() function only decreases the reference count
> of groups, engines, and wqs but is missing the step to release memory
> resources.
> 
> To fix this, use the cleanup helper to properly release the memory
> resources.
> 
> Fixes: ddf742d4f3f1 ("dmaengine: idxd: Add missing cleanup for early error out in probe call")
> Cc: stable@...r.kernel.org
> Signed-off-by: Shuai Xue <xueshuai@...ux.alibaba.com>
Reviewed-by: Dave Jiang <dave.jiang@...el.com>

> ---
>  drivers/dma/idxd/init.c | 11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
> index 7334085939dc..cf5dc981be32 100644
> --- a/drivers/dma/idxd/init.c
> +++ b/drivers/dma/idxd/init.c
> @@ -408,14 +408,9 @@ static int idxd_setup_groups(struct idxd_device *idxd)
>  
>  static void idxd_cleanup_internals(struct idxd_device *idxd)
>  {
> -	int i;
> -
> -	for (i = 0; i < idxd->max_groups; i++)
> -		put_device(group_confdev(idxd->groups[i]));
> -	for (i = 0; i < idxd->max_engines; i++)
> -		put_device(engine_confdev(idxd->engines[i]));
> -	for (i = 0; i < idxd->max_wqs; i++)
> -		put_device(wq_confdev(idxd->wqs[i]));
> +	idxd_clean_groups(idxd);
> +	idxd_clean_engines(idxd);
> +	idxd_clean_wqs(idxd);
>  	destroy_workqueue(idxd->wq);
>  }
>