netdev - Re: [PATCH net-next 8/8] ipv4: start using dst_dev

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Message-ID: <eda537e3-05b5-44be-b0b4-77690040a5e4@kernel.org>
Date: Thu, 28 Aug 2025 16:17:29 -0600
From: David Ahern <dsahern@...nel.org>
To: Eric Dumazet <edumazet@...gle.com>, "David S . Miller"
 <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, Neal Cardwell <ncardwell@...gle.com>
Cc: Simon Horman <horms@...nel.org>, Kuniyuki Iwashima <kuniyu@...gle.com>,
 netdev@...r.kernel.org, eric.dumazet@...il.com
Subject: Re: [PATCH net-next 8/8] ipv4: start using dst_dev_rcu()

On 8/28/25 1:58 PM, Eric Dumazet wrote:
> Change icmpv4_xrlim_allow(), ip_defrag() to prevent possible UAF.
> 
> Change ipmr_prepare_xmit(), ipmr_queue_fwd_xmit(), ip_mr_output(),
> ipv4_neigh_lookup() to use lockdep enabled dst_dev_rcu().
> 
> Fixes: 4a6ce2b6f2ec ("net: introduce a new function dst_dev_put()")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> ---
>  net/ipv4/icmp.c        | 6 +++---
>  net/ipv4/ip_fragment.c | 6 ++++--
>  net/ipv4/ipmr.c        | 6 +++---
>  net/ipv4/route.c       | 4 ++--
>  4 files changed, 12 insertions(+), 10 deletions(-)
> 

Reviewed-by: David Ahern <dsahern@...nel.org>