tree c57c7fdc5269f1ffbc3c5fee1ac9c316b26e1a51
parent 339b0ac9a0589c8287b0f9be6221934e8df268c6
author Kees Cook <keescook@chromium.org> 1365642351 -0700
committer ChromeBot <chrome-bot@google.com> 1365704979 -0700

vbutil_kernel: copy zeropage fully

When copying the vmlinuz zeropage, the entries were being truncated even
though the boot protocol version was being retained. This means that
booting a kernel that depended on details from the zeropage's ignored
areas would find invalid information. Fix this by copying out the entire
possible range of memory.

BUG=chromium:230212
TEST=kernels can boot with CONFIG_RELOCATABLE
BRANCH=None

Change-Id: Ifb94bedcf881e17ab20fff44d8c1c1885b15ef9e
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/47832
Reviewed-by: Luigi Semenzato <semenzato@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>