Re: linux 2.6.15.1 ppp_async panic on x86-64.

[Andrew Morton <akpm@osdl.org>]

"Vitaly V. Bursov" <vitalyb@telenet.dn.ua> wrote:
>
>  PPP doesn't work for me on a x86-64 kernel.
>

The below was merged a couple of days ago, which should fix it.  Can you
please confirm that?




Begin forwarded message:

Date: Tue, 17 Jan 2006 18:03:32 -0800
From: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
To: git-commits-head@vger.kernel.org
Subject: [NET]: Make second arg to skb_reserved() signed.


tree 39750d44770efcdac150f041f71b7272c8da20f9
parent f09484ff87f677056ce631aa3d8e486861501b51
author David S. Miller <davem@sunset.davemloft.net> Tue, 17 Jan 2006 18:54:21 -0800
committer David S. Miller <davem@sunset.davemloft.net> Tue, 17 Jan 2006 18:54:21 -0800

[NET]: Make second arg to skb_reserved() signed.

Some subsystems, such as PPP, can send negative values
here.  It just happened to work correctly on 32-bit with
an unsigned value, but on 64-bit this explodes.

Figured out by Paul Mackerras based upon several PPP crash
reports.

Signed-off-by: David S. Miller <davem@davemloft.net>

 include/linux/skbuff.h |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index e5fd66c..ad7cc22 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -926,7 +926,7 @@ static inline int skb_tailroom(const str
  *	Increase the headroom of an empty &sk_buff by reducing the tail
  *	room. This is only allowed for an empty buffer.
  */
-static inline void skb_reserve(struct sk_buff *skb, unsigned int len)
+static inline void skb_reserve(struct sk_buff *skb, int len)
 {
 	skb->data += len;
 	skb->tail += len;
-
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