[PATCH] staging/lustre: add annotations for user space pointers

[Greg KH]

On Sat, Aug 08, 2015 at 11:42:16PM +0300, Tomas Melin wrote:
> user space input pointers need correct annotations.
> 
> Signed-off-by: Tomas Melin <tomas.melin at iki.fi>
> ---
>  drivers/staging/lustre/include/linux/libcfs/libcfs_ioctl.h | 4 ++--
>  drivers/staging/lustre/lustre/libcfs/linux/linux-module.c  | 6 +++---
>  2 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs_ioctl.h b/drivers/staging/lustre/include/linux/libcfs/libcfs_ioctl.h
> index f5d741f..b861fe7 100644
> --- a/drivers/staging/lustre/include/linux/libcfs/libcfs_ioctl.h
> +++ b/drivers/staging/lustre/include/linux/libcfs/libcfs_ioctl.h
> @@ -208,7 +208,7 @@ static inline int libcfs_ioctl_is_invalid(struct libcfs_ioctl_data *data)
>  
>  int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
>  int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
> -int libcfs_ioctl_getdata(char *buf, char *end, void *arg);
> -int libcfs_ioctl_popdata(void *arg, void *buf, int size);
> +int libcfs_ioctl_getdata(char *buf, char *end, void __user *arg);
> +int libcfs_ioctl_popdata(void __user *arg, void *buf, int size);

This isn't going to work well at all, please see the mailing list
archives for why.

sorry,

greg k-h