Commit 8f2a83b4 authored by Kees Cook's avatar Kees Cook Committed by David S. Miller

ipv6: Use memset_after() to zero rt6_info

In preparation for FORTIFY_SOURCE performing compile-time and run-time
field bounds checking for memset(), avoid intentionally writing across
neighboring fields.

Use memset_after() to clear everything after the dst_entry member of
struct rt6_info.
Signed-off-by: default avatarKees Cook <keescook@chromium.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e3617433
...@@ -328,9 +328,7 @@ static const struct rt6_info ip6_blk_hole_entry_template = { ...@@ -328,9 +328,7 @@ static const struct rt6_info ip6_blk_hole_entry_template = {
static void rt6_info_init(struct rt6_info *rt) static void rt6_info_init(struct rt6_info *rt)
{ {
struct dst_entry *dst = &rt->dst; memset_after(rt, 0, dst);
memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst));
INIT_LIST_HEAD(&rt->rt6i_uncached); INIT_LIST_HEAD(&rt->rt6i_uncached);
} }
......
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