ipv4: additional update of dev_net(dev) to struct *net in ip_fragment.c, NULL ptr...
David Ford [Mon, 30 Nov 2009 07:02:22 +0000 (23:02 -0800)]
ipv4 ip_frag_reasm(), fully replace 'dev_net(dev)' with 'net', defined
previously patched into 2.6.29.

Between 2.6.28.10 and 2.6.29, net/ipv4/ip_fragment.c was patched,
changing from dev_net(dev) to container_of(...).  Unfortunately the goto
section (out_fail) on oversized packets inside ip_frag_reasm() didn't
get touched up as well.  Oversized IP packets cause a NULL pointer
dereference and immediate hang.

I discovered this running openvasd and my previous email on this is
titled:  NULL pointer dereference at 2.6.32-rc8:net/ipv4/ip_fragment.c:566

Signed-off-by: David Ford <david@blue-labs.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/ip_fragment.c

index 575f9bd..d3fe10b 100644 (file)
@@ -563,7 +563,7 @@ out_oversize:
                printk(KERN_INFO "Oversized IP packet from %pI4.\n",
                        &qp->saddr);
 out_fail:
-       IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_REASMFAILS);
+       IP_INC_STATS_BH(net, IPSTATS_MIB_REASMFAILS);
        return err;
 }