Hi Cyrill,
On 3/23/21 10:06 PM, Cyrill Gorcunov wrote:
[..]
> --- linux-tip.git.orig/kernel/sys.c
> +++ linux-tip.git/kernel/sys.c
> @@ -1961,6 +1961,30 @@ out:
> return error;
> }
>
> +static int copy_auxv_from_user(unsigned long *auxv, size_t auxv_size,
> +
prctl(PR_SET_MM, PR_SET_MM_AUXV | PR_SET_MM_MAP, ...) copies user
provided auxiliary vector to kernel and saves it to mm::saved_auxv,
this involves same code in to places. Lets move it into one helper
instead.
When we copy data from user space we make sure that the vector ends
up with AT_NULL
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