linux-kernel - Re: [PATCH 4.14 09/89] net: Prevent invalid access to skb->prev in __qdisc_drop

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Date:   Fri, 14 Dec 2018 11:05:30 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     cpaasch@...le.com
Cc:     gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, bhole_prashant_q7@....ntt.co.jp,
        tyhicks@...onical.com, eric.dumazet@...il.com, edumazet@...gle.com
Subject: Re: [PATCH 4.14 09/89] net: Prevent invalid access to skb->prev in
 __qdisc_drop_all

From: Christoph Paasch <cpaasch@...le.com>
Date: Fri, 14 Dec 2018 07:52:26 -0800

> I don't think this patch needs to be backported. I haven't hit this panic on
> v4.14.x (although, I only have been using v4.14.79 for now - not yet the
> latest one). And the commits that seem to have introduced the issue haven't
> been backported either AFAICS. That being said, I don't think a backport
> would cause any side-effects.
> 
> Or have you seen reports of this panic in the stable branches?
> 
> (same for the other stable branches v4.4,... - cfr., the other mails
> regarding this patch here)

I was being ultra paranoid when I decided to submit this to 4.14 too,
and as Eric says it does not harm.