From: Tushar Gohad <tgohad@mvista.com>
Date: Thu, 7 Jul 2011 15:38:52 +0000 (+0000)
Subject: XFRM: Fix memory leak in xfrm_state_update
X-Git-Tag: v3.0~41^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8fcbc63701b01e913e6a13937f765fabf9c969c5;p=pandora-kernel.git

XFRM: Fix memory leak in xfrm_state_update

Upon "ip xfrm state update ..", xfrm_add_sa() takes an extra reference on
the user-supplied SA and forgets to drop the reference when
xfrm_state_update() returns 0.  This leads to a memory leak as the
parameter SA is never freed.  This change attempts to fix the leak by
calling __xfrm_state_put() when xfrm_state_update() updates a valid SA
(err = 0).  The parameter SA is added to the gc list when the final
reference is dropped by xfrm_add_sa() upon completion.

Signed-off-by: Tushar Gohad <tgohad@mvista.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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