Revert "netfilter: conntrack: fix race in __nf_conntrack_confirm against get_next_corpse"

This reverts commit 88fd8709858b9cd94e2d28b4b3cac4b752f0683a which was
commit 5195c14c8b27cc0b18220ddbf0e5ad3328a04187 upstream, which was
reverted in commit 43612d7c04f1a4f5e60104143918fcdf018b66ee.

Reported-by: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Daniel Borkmann <dborkman@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux 3.17.6
grsec: Apply grsecurity-3.0-3.17.6-201412071639.patch

commit 850b7bac06f356ab86ef1b4ac39770736b6c5dd7
Merge: f22d0f0 5ab0fb3
Author: Brad Spengler <spender@grsecurity.net>
Date:   Sun Dec 7 16:35:35 2014 -0500

    Merge branch 'pax-test' into grsec-test

commit 5ab0fb3e60a089a5722cbf1ec8bd52a124893165
Merge: 2b2a990 30c80cb
Author: Brad Spengler <spender@grsecurity.net>
Date:   Sun Dec 7 16:35:31 2014 -0500

    Merge branch 'linux-3.17.y' into pax-test

commit f22d0f0f65c55fb7a069c8f9485b23aee20f8356
Author: Brad Spengler <spender@grsecurity.net>
Date:   Sun Dec 7 12:41:18 2014 -0500

    Fix sparc64 compilation, reported by Blake Self

 arch/sparc/include/asm/pgalloc_64.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

Signature-tree: 3fdcd4cb263e8638b77dca46ecc79fcbfe593800