Since addresses are only revalidated every 2 minutes, the reported valid_lft can underflow shortly before the address is deleted. Clamp it to a minimum of 0, as for prefered_lft.
Reported-by: Piotr Lewandowski <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- This is compile-tested only. I don't claim any familiarity with this code. Ben. net/ipv6/addrconf.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index b97bb1f..1459eed 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3492,8 +3492,12 @@ static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa, preferred -= tval; else preferred = 0; - if (valid != INFINITY_LIFE_TIME) - valid -= tval; + if (valid != INFINITY_LIFE_TIME) { + if (valid > tval) + valid -= tval; + else + valid = 0; + } } } else { preferred = INFINITY_LIFE_TIME; -- 1.7.1 -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/1277588267.26161.300.ca...@localhost
