xfrm: check bundle policy existance before dereferencing it
authorTimo Teräs <timo.teras@iki.fi>
Thu, 24 Jun 2010 21:35:00 +0000 (14:35 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 24 Jun 2010 21:35:00 +0000 (14:35 -0700)
commitb1312c89f0016f778cac4f1536f1434e132f8713
tree6cec9bc88430cf30f8409b8b607d2b6a6d2fd118
parent38000a94a902e94ca8b5498f7871c6316de8957a
xfrm: check bundle policy existance before dereferencing it

Fix the bundle validation code to not assume having a valid policy.
When we have multiple transformations for a xfrm policy, the bundle
instance will be a chain of bundles with only the first one having
the policy reference. When policy_genid is bumped it will expire the
first bundle in the chain which is equivalent of expiring the whole
chain.

Reported-bisected-and-tested-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/xfrm/xfrm_policy.c