Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1272890

Re: [PATCH] tty/vt/keyboard: use memdup_user to simplify code

Show all headers | View raw

On 28 October 2015 at 11:56, Saurabh Sengar <saurabh.truth@gmail.com> wrote:
> use memdup_user rather than duplicating implementation.
> found by coccinelle
>
> Signed-off-by: Saurabh Sengar <saurabh.truth@gmail.com>
> ---
>  drivers/tty/vt/keyboard.c | 14 +++++---------
>  1 file changed, 5 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
> index 6f0336f..f973bfc 100644
> --- a/drivers/tty/vt/keyboard.c
> +++ b/drivers/tty/vt/keyboard.c
> @@ -1706,16 +1706,12 @@ int vt_do_diacrit(unsigned int cmd, void __user *udp, int perm)
>                         return -EINVAL;
>
>                 if (ct) {
> -                       dia = kmalloc(sizeof(struct kbdiacr) * ct,
> -                                                               GFP_KERNEL);
> -                       if (!dia)
> -                               return -ENOMEM;
>
> -                       if (copy_from_user(dia, a->kbdiacr,
> -                                       sizeof(struct kbdiacr) * ct)) {
> -                               kfree(dia);
> -                               return -EFAULT;
> -                       }
> +                       dia = memdup_user(a->kbdiacr,
> +                                       sizeof(struct kbdiacr) * ct);
> +                       if (IS_ERR(dia))
> +                               return PTR_ERR(dia);
> +
>                 }
>
>                 spin_lock_irqsave(&kbd_event_lock, flags);
> --
> 1.9.1
>

Hi,

Is this patch rejected for some reason or is still in queue?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

Re: [PATCH] tty/vt/keyboard: use memdup_user to simplify code Saurabh Sengar <saurabh.truth@gmail.com> - 2015-11-19 08:20 +0100

csiph-web