Re: [PATCH v4.14-stable] sch_netem: restore skb->dev after dequeuing from the rbtree

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Greg,

On Thu, Oct 18, 2018 at 03:43:48PM -0700, David Miller wrote:
> From: Christoph Paasch <cpaasch@xxxxxxxxx>
> Date: Thu, 18 Oct 2018 13:38:40 -0700
> 
> > Upstream commit bffa72cf7f9d ("net: sk_buff rbnode reorg") got
> > backported as commit 6b921536f170 ("net: sk_buff rbnode reorg") into the
> > v4.14.x-tree.
> > 
> > However, the backport does not include the changes in sch_netem.c
> > 
> > We need these, as otherwise the skb->dev pointer is not set when
> > dequeueing from the netem rbtree, resulting in a panic:
>  ...
> > Fixes: 6b921536f170 ("net: sk_buff rbnode reorg")
> > Cc: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>
> > Cc: Eric Dumazet <edumazet@xxxxxxxxxx>
> > Cc: Soheil Hassas Yeganeh <soheil@xxxxxxxxxx>
> > Cc: Wei Wang <weiwan@xxxxxxxxxx>
> > Cc: Willem de Bruijn <willemb@xxxxxxxxxx>
> > Signed-off-by: Christoph Paasch <cpaasch@xxxxxxxxx>
> > ---
> > 
> > Notes:
> >     This patch should only make it into v4.14-stable as that's the only branch where
> >     the offending commit has been backported to.
> 
> Greg, please queue up.

Are you planing to queue this one ?

Looks to me it was a miss on the backport.

It seams that the backport was touching different files, and missed the change
on net/sched/sch_netem.c. So, to me, even if this patch may not follow the
strictly the rules of stable, as it is not a patch in upstream, seams to be a 
needed change, even if it is specific to stable linux-4.14.y.

> 

-- 
All the best,
Eduardo Valentin



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