[PATCH RESEND] memory leak in ndisc_router_discovery

[Krishna Kumar <krkumar@xxxxxxxxxx>]

Hi,

I had sent this earlier, there is a bug in router advertisement handling code,
where the reference (and memory) to an inet6_dev pointer can get leaked (this
leak can happen atmost once for each interface on a system which receives
invalid RA's). Below is the patch against 2.5.51 to fix it.

thanks,

- KK

-------------------------------------------------------------------------------
diff -ruN linux.org/net/ipv6/ndisc.c linux/net/ipv6/ndisc.c
--- linux.org/net/ipv6/ndisc.c  Fri Nov  7 10:02:11 2002
+++ linux/net/ipv6/ndisc.c      Fri Nov  8 14:37:27 2002
@@ -871,6 +871,7 @@
        }
 
        if (!ndisc_parse_options(opt, optlen, &ndopts)) {
+               in6_dev_put(in6_dev);
                if (net_ratelimit())
                        ND_PRINTK2(KERN_WARNING
                                   "ICMP6 RA: invalid ND option, ignored.\n");
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