Re: [PATCH 4.19 164/213] netfilter: nft_set_rbtree: Switch to node list walk for overlap detection

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On Thu, 2024-06-13 at 13:33 +0200, Greg Kroah-Hartman wrote:
> 4.19-stable review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
> 
> commit c9e6978e2725a7d4b6cd23b2facd3f11422c0643 upstream.
[...]

This turns out to cause a regression for nftables user-space versions
older than v0.9.3, specifically before:

commit a4ec053812610400b7a9e6c060d8b7589dedd5b1
Author: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Date:   Wed Oct 9 11:54:32 2019 +0200
 
    segtree: always close interval in non-anonymous sets

Should nft_set_rbtree detect and fix-up the bad set messages that
nftables user-space used to send?

Ben.

-- 
Ben Hutchings
A free society is one where it is safe to be unpopular.
                                                      - Adlai Stevenson

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