From: Julian Anastasov <ja@ssi.bg>
Date: Thu, 8 Sep 2005 20:34:47 +0000 (-0700)
Subject: [IPV4]: Fix refcount damaging in net/ipv4/route.c
X-Git-Tag: v2.6.14-rc1~492^2~22^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ce723d8e048ef98ea64d12379e3921c933f5b3e0;p=pandora-kernel.git

[IPV4]: Fix refcount damaging in net/ipv4/route.c

	One such place that can damage the dst refcnts is route.c with
CONFIG_IP_ROUTE_MULTIPATH_CACHED enabled, i don't see the user's
.config. In this new code i see that rt_intern_hash is called before
dst->refcnt is set to 1, dst is the 2nd arg to rt_intern_hash.

Arg 2 of rt_intern_hash must come with refcnt 1 as it is added to
table or dropped depending on error/add/update. One such example is
ip_mkroute_input where __mkroute_input return rth with refcnt 0 which
is provided to rt_intern_hash. ip_mkroute_output looks like a 2nd such
place. Appending untested patch for comments and review.  The idea is
to put previous reference as we are going to return next result/error.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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