[PATCH v2] ocxl: Fix potential memory leak on context creation

[Andrew Donnellan]

Acked-by: Andrew Donnellan <ajd at linux.ibm.com>

On 20/5/19 5:16 pm, Frederic Barrat wrote:
> If we couldn't fully init a context, we were leaking memory.
> 
> Fixes: b9721d275cc2 ("ocxl: Allow external drivers to use OpenCAPI contexts")
> Signed-off-by: Frederic Barrat <fbarrat at linux.ibm.com>
> ---
> 
> Changelog:
> v2: reset context pointer in case of allocation failure (Andrew)
> 
>   drivers/misc/ocxl/context.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/misc/ocxl/context.c b/drivers/misc/ocxl/context.c
> index bab9c9364184..24e4fb010275 100644
> --- a/drivers/misc/ocxl/context.c
> +++ b/drivers/misc/ocxl/context.c
> @@ -22,6 +22,8 @@ int ocxl_context_alloc(struct ocxl_context **context, struct ocxl_afu *afu,
>   			afu->pasid_base + afu->pasid_max, GFP_KERNEL);
>   	if (pasid < 0) {
>   		mutex_unlock(&afu->contexts_lock);
> +		kfree(*context);
> +		*context = NULL;
>   		return pasid;
>   	}
>   	afu->pasid_count++;
> 

-- 
Andrew Donnellan              OzLabs, ADL Canberra
ajd at linux.ibm.com             IBM Australia Limited