[Devel] [PATCH rh7] seccomp, ptrace: Fix typo in filter fetching

[Andrey Vagin]

On Tue, Dec 06, 2016 at 05:59:30PM +0300, Cyrill Gorcunov wrote:
> In commit 42b65fd18057d64410a0519962cd0650c762c99f there
> is a typo: we need to copy the complete filter chain
> not only first number.
> 
> https://jira.sw.ru/browse/PSBM-55593
>

Acked-by: Andrey Vagin <avagin at openvz.org> 
> CC: Andrey Vagin <avagin at openvz.org>
> Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
> ---
> 
> I am continue investigating the problem since tests
> are not yet passed but this fix may be applied independently.
> 
>  kernel/seccomp.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> Index: linux-pcs7.git/kernel/seccomp.c
> ===================================================================
> --- linux-pcs7.git.orig/kernel/seccomp.c
> +++ linux-pcs7.git/kernel/seccomp.c
> @@ -566,7 +566,7 @@ long seccomp_get_filter(struct task_stru
>  	get_seccomp_filter(task);
>  	spin_unlock_irq(&task->sighand->siglock);
>  
> -	if (copy_to_user(data, filter->insns, filter->len))
> +	if (copy_to_user(data, filter->insns, filter->len * sizeof(filter->insns[0])))
>  		ret = -EFAULT;
>  
>  	put_seccomp_filter(task);