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authorEric Dumazet <dada1@cosmosbay.com>2008-01-08 23:39:06 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-08 23:39:06 -0800
commit0f99be0d115a5716292c58dfdb20d2eddd0f3387 (patch)
treea4c8fc6262add152fa7207e40a5f02b18c9bedde /include/net/xfrm.h
parent2e3884b5b16795c03a7bf295797c1b2402885b88 (diff)
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op-kernel-dev-0f99be0d115a5716292c58dfdb20d2eddd0f3387.tar.gz
[XFRM]: xfrm_algo_clone() allocates too much memory
alg_key_len is the length in bits of the key, not in bytes. Best way to fix this is to move alg_len() function from net/xfrm/xfrm_user.c to include/net/xfrm.h, and to use it in xfrm_algo_clone() alg_len() is renamed to xfrm_alg_len() because of its global exposition. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/xfrm.h')
-rw-r--r--include/net/xfrm.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 58dfa828..1dd20cf 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1188,10 +1188,15 @@ static inline int xfrm_aevent_is_on(void)
return ret;
}
+static inline int xfrm_alg_len(struct xfrm_algo *alg)
+{
+ return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
+}
+
#ifdef CONFIG_XFRM_MIGRATE
static inline struct xfrm_algo *xfrm_algo_clone(struct xfrm_algo *orig)
{
- return (struct xfrm_algo *)kmemdup(orig, sizeof(*orig) + orig->alg_key_len, GFP_KERNEL);
+ return kmemdup(orig, xfrm_alg_len(orig), GFP_KERNEL);
}
static inline void xfrm_states_put(struct xfrm_state **states, int n)
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