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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: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 1 additions and 3 deletions
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@ -328,9 +328,7 @@ static const struct rt6_info ip6_blk_hole_entry_template = {
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static void rt6_info_init(struct rt6_info *rt)
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{
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struct dst_entry *dst = &rt->dst;
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memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst));
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memset_after(rt, 0, dst);
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INIT_LIST_HEAD(&rt->rt6i_uncached);
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}
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