On Fri, Oct 25, 2019 at 1:44 PM Daniel Borkmann <daniel@xxxxxxxxxxxxx> wrote:
>
> Convert the bpf_probe_write_user() helper to probe_user_write() such that
> writes are not attempted under KERNEL_DS anymore which is buggy as kernel
> and user space pointers can have overlapping addresses. Also, given we have
> the access_ok() check inside probe_user_write(), the helper doesn't need
> to do it twice.
>
> Fixes: 96ae52279594 ("bpf: Add bpf_probe_write_user BPF helper to be called in tracers")
> Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
> ---
Acked-by: Andrii Nakryiko <andriin@xxxxxx>
[...]
