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authorLi RongQing <roy.qing.li@gmail.com>2014-05-22 16:36:55 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-31 13:20:39 -0700
commit242339a25ed829432d99e6571d170b308432ed55 (patch)
parentff9cfa6b917a903fe24dba928dca61d0c9339864 (diff)
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index db66057b9d13..134437309b1e 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1526,7 +1526,7 @@ static int __mkroute_input(struct sk_buff *skb,
struct in_device *out_dev;
unsigned int flags = 0;
bool do_cache;
- u32 itag;
+ u32 itag = 0;
/* get a working reference to the output device */
out_dev = __in_dev_get_rcu(FIB_RES_DEV(*res));