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inet: Fix BUG triggered by __rt{,6}_get_peer(). 

If no peer actually gets attached (either because create is zero or
the peer allocation fails) we'll trigger a BUG because we
unconditionally do an rt{,6}_peer_ptr() afterwards.

Fix this by guarding it with the proper check.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2012-06-11 15:52:29 -07:00
parent 352e04b911
commit 55afabaa0d
2 changed files with 2 additions and 2 deletions
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2
include/net/ip6_route.h
View File

@ -61,7 +61,7 @@ static inline struct inet_peer *__rt6_get_peer(struct rt6_info *rt, int create)
return rt6_peer_ptr(rt);
rt6_bind_peer(rt, create);
return rt6_peer_ptr(rt);
return (rt6_has_peer(rt) ? rt6_peer_ptr(rt) : NULL);
}
static inline struct inet_peer *rt6_get_peer(struct rt6_info *rt)

2
include/net/route.h
View File

@ -334,7 +334,7 @@ static inline struct inet_peer *__rt_get_peer(struct rtable *rt, __be32 daddr, i
return rt_peer_ptr(rt);
rt_bind_peer(rt, daddr, create);
return rt_peer_ptr(rt);
return (rt_has_peer(rt) ? rt_peer_ptr(rt) : NULL);
}
static inline struct inet_peer *rt_get_peer(struct rtable *rt, __be32 daddr)