linux-kernel - Re: [PATCH v2 -next] infiniband: core: Delete useless kfree code

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]

Message-ID: <20210107183012.GA909687@nvidia.com>
Date:   Thu, 7 Jan 2021 14:30:12 -0400
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Zheng Yongjun <zhengyongjun3@...wei.com>
CC:     <leon@...nel.org>, <linux-rdma@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <dledford@...hat.com>
Subject: Re: [PATCH v2 -next] infiniband: core: Delete useless kfree code

On Wed, Dec 16, 2020 at 04:02:19PM +0800, Zheng Yongjun wrote:
> The parameter of kfree function is NULL, so kfree code is useless, delete it.
> Therefore, goto expression is no longer needed, so simplify it.
> 
> Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
>  drivers/infiniband/core/cma_configfs.c | 9 ++-------
>  1 file changed, 2 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/infiniband/core/cma_configfs.c b/drivers/infiniband/core/cma_configfs.c
> index 7ec4af2ed87a..51f59ed6916b 100644
> +++ b/drivers/infiniband/core/cma_configfs.c
> @@ -202,7 +202,6 @@ static int make_cma_ports(struct cma_dev_group *cma_dev_group,
>  	unsigned int i;
>  	unsigned int ports_num;
>  	struct cma_dev_port_group *ports;
> -	int err;
>  
>  	ibdev = cma_get_ib_dev(cma_dev);
>  
> @@ -214,8 +213,8 @@ static int make_cma_ports(struct cma_dev_group *cma_dev_group,
>  			GFP_KERNEL);
>  
>  	if (!ports) {
> -		err = -ENOMEM;
> -		goto free;
> +		cma_dev_group->ports = NULL;

This set is also useless, the only caller allocated cma_dev_group with
kzalloc so it is already NULL here, I fixed it and applied to
for-next, thanks

Jason