lkml.org 
[lkml]   [2022]   [Mar]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] staging: r8188eu: fix a potential memory leak in _rtw_init_cmd_priv()
On Wed, Mar 30, 2022 at 07:32:21PM +0800, xkernel.wang@foxmail.com wrote:
> From: Xiaoke Wang <xkernel.wang@foxmail.com>
>
> In _rtw_init_cmd_priv(), if `pcmdpriv->rsp_allocated_buf` is allocated
> in failure, `pcmdpriv->cmd_allocated_buf` is not properly released.
> This patch is to free it.
>
> Signed-off-by: Xiaoke Wang <xkernel.wang@foxmail.com>
> ---
> drivers/staging/r8188eu/core/rtw_cmd.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/staging/r8188eu/core/rtw_cmd.c b/drivers/staging/r8188eu/core/rtw_cmd.c
> index 56910c3..e76015e 100644
> --- a/drivers/staging/r8188eu/core/rtw_cmd.c
> +++ b/drivers/staging/r8188eu/core/rtw_cmd.c
> @@ -42,6 +42,8 @@ static int _rtw_init_cmd_priv(struct cmd_priv *pcmdpriv)
> pcmdpriv->rsp_allocated_buf = kzalloc(MAX_RSPSZ + 4, GFP_KERNEL);
>
> if (!pcmdpriv->rsp_allocated_buf) {
> + kfree(pcmdpriv->cmd_allocated_buf);
> + pcmdpriv->cmd_allocated_buf = NULL;
> res = _FAIL;
> goto exit;

Shouldn't this be handled properly in the exit: portion instead?

thanks,

greg k-h

\
 
 \ /
  Last update: 2022-03-30 13:44    [W:0.030 / U:0.096 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site