Re: Help: major pppoe regression since 2.6.35 (panic on first pppconection)?
From: Joel Soete
Date: Thu Dec 23 2010 - 06:03:12 EST
Hello Eric,
On 12/22/2010 04:25 PM, Eric Dumazet wrote:
[snip]
Something overwrites nr_frags in skb_shinfo(skb)
As skb_shinfo follows head portion of an skb, something overflows skb
head
Please try adding some room like in following patch ?
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index e6ba898..adf2834 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -187,6 +187,7 @@ enum {
* the end of the header data, ie. at skb->end.
*/
struct skb_shared_info {
+ char filler[64];
unsigned short nr_frags;
unsigned short gso_size;
/* Warning: this field is not always filled in (UFO)! */
Sorry for delay but I have good news, I am sending this answer from:
$ uname -a
Linux sidh2 2.6.37-rc7-amd64-t1 #1 SMP Thu Dec 23 10:30:27 GMT 2010 x86_64 GNU/Linux
with your tips ;<) (without kernel had already died)
That said how can find stuff overflowing skb head? (all I say, is that this issue started with 2.6.34-git6???)
Thanks a lot,
J.
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