Subject: Re: [2.6.17.8] NFS stall / BUG in UDP fragment processing / SKB trimming

From: Greg KH <[email-masked]>
Date: Fri, 25 Aug 2006 16:03:16 -0700

On Sun, Aug 13, 2006 at 10:59:11PM +1000, Herbert Xu wrote:
> On Sat, Aug 12, 2006 at 09:19:19PM +0000, Nix wrote:
> > 
> > The kernel log showed a heap of BUGs from somewhere inside the skb
> > management layer, somewhere in UDP fragment processing while
> > handling NFS requests. It starts like this:
> > 
> > Aug 12 21:31:08 hades warning: kernel: BUG: warning at include/linux/skbuff.h:975/__skb_trim()
> > Aug 12 21:31:08 hades warning: kernel: <c030ed39> ip_append_data+0x5b3/0x951  <c030fc18> ip_generic_getfrag+0x0/0x96
> 
> Oops, I missed this code path when I disallowed skb_trim from operating
> on a paged skb.  This patch should fix the problem.
> 
> Greg, we need this for 2.6.17 stable as well if Dave is OK with it.

This patch doesn't apply at all to the latest 2.6.17-stable kernel tree.
Care to rediff it?

thanks,

greg k-h