Commit b7eea454 authored Jun 18, 2014 by Steffen Klassert

xfrm: Fix refcount imbalance in xfrm_lookup

xfrm_lookup must return a dst_entry with a refcount for the caller.
Git commit 1a1ccc96 ("xfrm: Remove caching of xfrm_policy_sk_bundles")
removed this refcount for the socket policy case accidentally.
This patch restores it and sets DST_NOCACHE flag to make sure
that the dst_entry is freed when the refcount becomes null.

Fixes: 1a1ccc96 ("xfrm: Remove caching of xfrm_policy_sk_bundles")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

parent d7933ab7

net/xfrm/xfrm_policy.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -2097,6 +2097,8 @@ struct dst_entry xfrm_lookup(struct net net, struct dst_entry *dst_orig,
		goto no_transform;
		}

		dst_hold(&xdst->u.dst);
		xdst->u.dst.flags \|= DST_NOCACHE;
		route = xdst->route;
		}
		}

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