From: Alexei Starovoitov <ast@plumgrid.com>
Date: Wed, 23 Apr 2014 03:18:57 +0000 (-0700)
Subject: net: filter: initialize A and X registers
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~214^2~51
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=83d5b7ef99c9f05e87333b334a638de1264ab8e4;p=pandora-kernel.git

net: filter: initialize A and X registers

exisiting BPF verifier allows uninitialized access to registers,
'ret A' is considered to be a valid filter.
So initialize A and X to zero to prevent leaking kernel memory
In the future BPF verifier will be rejecting such filters

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Cc: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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