From: Julian Anastasov There was a fix in 2.6.13 that changed the behaviour of ip_vs_conn_expire_now function not to put reference to connection, its callers should hold write lock or connection refcnt. But we forgot to convert one caller, when the real server for connection is unavailable caller should put the connection reference. It happens only when sysctl var expire_nodest_conn is set to 1 and such connections never expire. Thanks to Roberto Nibali who found the problem and tested a 2.4.32-rc2 patch, which is equal to this 2.6 version. Signed-off-by: Julian Anastasov Signed-off-by: Roberto Nibali Signed-off-by: Chris Wright Signed-off-by: Greg Kroah-Hartman --- net/ipv4/ipvs/ip_vs_core.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) --- linux-2.6.14.1.orig/net/ipv4/ipvs/ip_vs_core.c +++ linux-2.6.14.1/net/ipv4/ipvs/ip_vs_core.c @@ -1009,11 +1009,10 @@ ip_vs_in(unsigned int hooknum, struct sk if (sysctl_ip_vs_expire_nodest_conn) { /* try to expire the connection immediately */ ip_vs_conn_expire_now(cp); - } else { - /* don't restart its timer, and silently - drop the packet. */ - __ip_vs_conn_put(cp); } + /* don't restart its timer, and silently + drop the packet. */ + __ip_vs_conn_put(cp); return NF_DROP; } --