Hi David,
* On Mon, Oct 31, 2005 at 07:30 PM (+0000), David R wrote:
> I've noticed that old versions of traceroute no longer work properly
> with the latest kernel. 2.6.13.4 is OK. I've done a bit of strace and am
> posting the differences here. These are from a 64 bit kernel using
> traceroute 0.6.2 as shipped with most versions of SuSE.
I am experiencing exactly the same problem with traceroute-0.6.2
running on SuSE 10.0 together with kernel 2.6.14. The whole thing
happens on a single core dual Opteron machine. I've tested this
kernel version on that machine only, yet.
I've also tried the latest traceroute version (1.0.2) from
ftp://ftp.lst.de/pub/people/okir/traceroute/
and experienced the same behaviour.
Olaf Kirch has just sent me a patch against 2.6.14. It has also
been discussed in NETDEV.
This fixed it for me:
--- a/net/core/datagram.c 2005-11-01 11:38:31.000000000 +0100
+++ b/net/core/datagram.c 2005-11-01 11:38:45.000000000 +0100
@@ -213,6 +213,10 @@
{
int i, err, fraglen, end = 0;
struct sk_buff *next = skb_shinfo(skb)->frag_list;
+
+ if (!len)
+ return 0;
+
next_skb:
fraglen = skb_headlen(skb);
i = -1;
Bye,
Steffen
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