Hello,
* Peter Palfrader <peter@palfrader.org>, [2007-02-20 18:18 +0100]:
> On Thu, 01 Feb 2007, Richard Mortimer wrote:
>
> > Kernel unaligned access at TPC[5e4420] ip_rcv+0xd0/0x58c
> > Kernel unaligned access at TPC[517f84] ip_fast_csum+0xc/0x80
> > Kernel unaligned access at TPC[517f88] ip_fast_csum+0x10/0x80
> > Kernel unaligned access at TPC[517f8c] ip_fast_csum+0x14/0x80
> > Kernel unaligned access at TPC[517f94] ip_fast_csum+0x1c/0x80
>
> Same on a v100, both on 2.6.18-4, and a self compiled 2.6.20.1.
Could you guys apply the following patch and see if it solves the ip_rcv
issue? I wrote it a bit blindly as I cannot reproduce the problem on my
system (a Blade).
Thanks.
--- net/ipv4/ip_input.c.old 2006-09-20 05:42:06.000000000 +0200
+++ net/ipv4/ip_input.c 2007-02-27 00:41:34.000000000 +0100
@@ -116,6 +116,7 @@
*/
#include <asm/system.h>
+#include <asm/unaligned.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
@@ -415,7 +416,7 @@
if (unlikely(ip_fast_csum((u8 *)iph, iph->ihl)))
goto inhdr_error;
- len = ntohs(iph->tot_len);
+ len = ntohs(get_unaligned(&iph->tot_len));
if (skb->len < len || len < (iph->ihl*4))
goto inhdr_error;
ciao,
ema
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