From: Kees Cook <keescook@chromium.org>
Date: Wed, 18 Jun 2014 22:34:57 +0000 (-0700)
Subject: net: filter: fix upper BPF instruction limit
X-Git-Tag: omap-for-v3.16/fixes-rc4~53^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6f9a093b66ce7cacc110d8737c03686e80ecfda6;p=pandora-kernel.git

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: bd4cf0ed331a ("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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