[Bug 714] Kernel panics in same_src()

[bugzilla-daemon at bugzilla.netfilter.org]

http://bugzilla.netfilter.org/show_bug.cgi?id=714





--- Comment #3 from Dmitry Petuhov <d.petuhov at electro-com.ru>  2011-11-19 06:41:49 ---
I will try to add some debugging like
-----------------
--- nf_nat_core.c.orig  2011-03-08 02:18:15.000000000 +0300
+++ nf_nat_core.c       2011-11-19 09:25:28.000000000 +0400
@@ -132,6 +132,28 @@
        const struct nf_conntrack_tuple *t;

        t = &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple;
+       if (tuple == NULL) {
+               printk(KERN_ERR "nf_nat_core: same_src: NULL tuple passed\n");
+               return 0;
+       }
+       if (t == NULL) {
+               printk(KERN_ERR "nf_nat_core: same_src: NULL original tuple in
ct "
+                               "for proto %u srcaddr %u.%u.%u.%u dstaddr
%u.%u.%u.%u"
+                               "src port %u dst port %u\n",
+                               tuple->dst.protonum, NIPQUAD(tuple->src.u3.ip),
+                              
NIPQUAD(tuple->dst.u3.ip),tuple->src.u.all,tuple->dst.u.all);
+               t = &ct->tuplehash[IP_CT_DIR_REPLY].tuple;
+               if (t == NULL) {
+                       printk(KERN_ERR "nf_nat_core: same_src: also NULL reply
tuple in ct\n");
+               } else {
+                       printk(KERN_ERR "nf_nat_core: same_src: reply tuple in
ct: "
+                               "proto %u srcaddr %u.%u.%u.%u dstaddr
%u.%u.%u.%u"
+                               "src port %u dst port %u\n",
+                               t->dst.protonum, NIPQUAD(t->src.u3.ip),
+                              
NIPQUAD(t->dst.u3.ip),t->src.u.all,t->dst.u.all);
+               }
+               return 0;
+       }
        return (t->dst.protonum == tuple->dst.protonum &&
                t->src.u3.ip == tuple->src.u3.ip &&
                t->src.u.all == tuple->src.u.all);
--------------------
to module to see what poiner is null. Can it be helpful? I'm bad C programmer,
so it may look ugly or be completely useless...


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