From: Li RongQing Date: Thu, 22 May 2014 08:36:55 +0000 (+0800) Subject: ipv4: initialise the itag variable in __mkroute_input X-Git-Tag: Ubuntu-5.2.0-15.16~13449^2~1 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=fbdc0ad095c0a299e9abf5d8ac8f58374951149a;p=mirror_ubuntu-eoan-kernel.git ipv4: initialise the itag variable in __mkroute_input 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 Acked-by: Alexei Starovoitov Signed-off-by: David S. Miller --- diff --git a/net/ipv4/route.c b/net/ipv4/route.c index db1e0da871f4..5e676be3daeb 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1519,7 +1519,7 @@ 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));