netdev - Re: [PATCH net] inet: shrink struct flowi

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Message-ID: <c3921640-5a77-4ddc-a774-9fb40a110db3@kernel.org>
Date: Thu, 26 Oct 2023 11:17:25 -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>
Cc: netdev@...r.kernel.org, eric.dumazet@...il.com, wenxu <wenxu@...oud.cn>
Subject: Re: [PATCH net] inet: shrink struct flowi_common

On 10/25/23 8:10 AM, Eric Dumazet wrote:
> I am looking at syzbot reports triggering kernel stack overflows
> involving a cascade of ipvlan devices.
> 
> We can save 8 bytes in struct flowi_common.
> 
> This patch alone will not fix the issue, but is a start.
> 
> Fixes: 24ba14406c5c ("route: Add multipath_hash in flowi_common to make user-define hash")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc: wenxu <wenxu@...oud.cn>
> ---
>  include/net/flow.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

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