[PATCH 7/9] staging: tidspbridge: fix memory leak

Nishanth Menon nm at ti.com
Fri Jul 30 12:38:17 UTC 2010


Kulikov Vasiliy had written, on 07/30/2010 06:09 AM, the following:
> dbll_create() leaks pzl_target if target_obj is NULL. Call kzalloc()
> only if memory is used.
> 
> Signed-off-by: Kulikov Vasiliy <segooon at gmail.com>
> ---
>  drivers/staging/tidspbridge/pmgr/dbll.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/tidspbridge/pmgr/dbll.c b/drivers/staging/tidspbridge/pmgr/dbll.c
> index 3636aa3..86840ce 100644
> --- a/drivers/staging/tidspbridge/pmgr/dbll.c
> +++ b/drivers/staging/tidspbridge/pmgr/dbll.c
> @@ -247,9 +247,9 @@ int dbll_create(struct dbll_tar_obj **target_obj,
>  	DBC_REQUIRE(pattrs != NULL);
>  	DBC_REQUIRE(target_obj != NULL);
>  
> -	/* Allocate DBL target object */
> -	pzl_target = kzalloc(sizeof(struct dbll_tar_obj), GFP_KERNEL);
>  	if (target_obj != NULL) {
> +		/* Allocate DBL target object */
> +		pzl_target = kzalloc(sizeof(struct dbll_tar_obj), GFP_KERNEL);
>  		if (pzl_target == NULL) {
>  			*target_obj = NULL;
>  			status = -ENOMEM;
I would suggest to add a else branch for if (target_obj != NULL) adding 
a status =-ENOMEM if error.

Overall, I guess we need to kick out the DBC_REQUIRE usage.. it is 
misleading as it is active only when DEBUG macro is enabled!

-- 
Regards,
Nishanth Menon



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