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authorEric Dumazet <edumazet@google.com>2013-04-08 17:58:11 +0000
committerDavid S. Miller <davem@davemloft.net>2013-04-09 13:23:11 -0400
commitca10b9e9a8ca7342ee07065289cbe74ac128c169 (patch)
tree33842f41a127f9da904ddd5d61839590e986e420 /fs/nilfs2
parentc802d759623acbd6e1ee9fbdabae89159a513913 (diff)
selinux: add a skb_owned_by() hook
Commit 90ba9b1986b5ac (tcp: tcp_make_synack() can use alloc_skb()) broke certain SELinux/NetLabel configurations by no longer correctly assigning the sock to the outgoing SYNACK packet. Cost of atomic operations on the LISTEN socket is quite big, and we would like it to happen only if really needed. This patch introduces a new security_ops->skb_owned_by() method, that is a void operation unless selinux is active. Reported-by: Miroslav Vadkerti <mvadkert@redhat.com> Diagnosed-by: Paul Moore <pmoore@redhat.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-security-module@vger.kernel.org Acked-by: James Morris <james.l.morris@oracle.com> Tested-by: Paul Moore <pmoore@redhat.com> Acked-by: Paul Moore <pmoore@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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