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authorLi RongQing <roy.qing.li@gmail.com>2014-05-22 16:36:55 +0800
committerBen Hutchings <ben@decadent.org.uk>2014-06-09 13:29:00 +0100
commit7df12dedb762223a0594078b85849c4a35581e9a (patch)
tree5276c17df9221f30458d6bea7526b75a5daaf207
parent9a45de4b54dc3e6ecbdc1f4d0d15dcbd2410bad3 (diff)
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ipv4: initialise the itag variable in __mkroute_input
[ Upstream commit fbdc0ad095c0a299e9abf5d8ac8f58374951149a ] the value of itag is a random value from stack, and may not be initiated by fib_validate_source, which called fib_combine_itag if CONFIG_IP_ROUTE_CLASSID is not set This will make the cached dst uncertainty Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
-rw-r--r--net/ipv4/route.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 6768ce2f50b1..6526110ba784 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2142,7 +2142,7 @@ static int __mkroute_input(struct sk_buff *skb,
struct in_device *out_dev;
unsigned int flags = 0;
__be32 spec_dst;
- u32 itag;
+ u32 itag = 0;
/* get a working reference to the output device */
out_dev = __in_dev_get_rcu(FIB_RES_DEV(*res));