Re: [Xen-devel] [PATCH] xen/pvcalls: NULL dereference in error handling

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 12 Jul 2017, Dan Carpenter wrote:
> We accidentally dereference "map" when it's NULL.
> 
> Fixes: b535e2b9b78a ("xen/pvcalls: implement connect command")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

Thanks!

Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>


> diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c
> index d6c4c4aecb41..01b690e1e555 100644
> --- a/drivers/xen/pvcalls-back.c
> +++ b/drivers/xen/pvcalls-back.c
> @@ -424,7 +424,7 @@ static int pvcalls_back_connect(struct xenbus_device *dev,
>                                       sock);
>       if (!map) {
>               ret = -EFAULT;
> -             sock_release(map->sock);
> +             sock_release(sock);
>       }
>  
>  out:
> 

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