net: filter: fix upper BPF instruction limit
The original checks (via sk_chk_filter) for instruction count uses ">", not ">=", so changing this in sk_convert_filter has the potential to break existing seccomp filters that used exactly BPF_MAXINSNS many instructions. Fixes: bd4cf0ed ("net: filter: rework/optimize internal BPF interpreter's instruction set") Signed-off-by: Kees Cook <keescook@chromium.org> Cc: stable@vger.kernel.org # v3.15+ Acked-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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