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Fri, 27 Feb 2026 08:39:30 -0500 (EST) Message-ID: Subject: Re: [REGRESSION] 6.19.4 stable netfilter / nftables [resolved] From: Genes Lists To: Greg KH Cc: Thorsten Leemhuis , linux-kernel@vger.kernel.org, coreteam@netfilter.org, netfilter-devel@vger.kernel.org, Pablo Neira Ayuso , stable@vger.kernel.org, regressions@lists.linux.dev, "Kris Karas (Bug Reporting)" Date: Fri, 27 Feb 2026 08:39:29 -0500 In-Reply-To: <2026022755-quail-graveyard-93e8@gregkh> References: <45f03b0b-fe8f-4942-bad1-3fbde03d4be1@leemhuis.info> <143e1a402ad78dd7076516a6ceb637f378310b16.camel@sapience.com> <10537f2b74da2b8a5cb8dc939f723291db39ff84.camel@sapience.com> <2026022755-quail-graveyard-93e8@gregkh> Autocrypt: addr=lists@sapience.com; prefer-encrypt=mutual; keydata=mDMEXSY9GRYJKwYBBAHaRw8BAQdAwzFfmp+m0ldl2vgmbtPC/XN7/k5vscpADq3BmRy5R 7y0LU1haWwgTGlzdHMgKEwwIDIwMTkwNzEwKSA8bGlzdHNAc2FwaWVuY2UuY29tPoiWBBMWCAA+Ah sBBQsJCAcCBhUKCQgLAgQWAgMBAh4BAheAFiEE5YMoUxcbEgQOvOMKc+dlCv6PxQAFAmPJfooFCRl vRHEACgkQc+dlCv6PxQAc/wEA/Dbmg91DOGXll0OW1GKaZQGQDl7fHibMOKRGC6X/emoA+wQR5FIz BnV/PrXbao8LS/h0tSkeXgPsYxrzvfZInIAC Content-Type: multipart/signed; micalg="pgp-sha384"; protocol="application/pgp-signature"; boundary="=-CJH6K1VESEbpPGNJW4eb" User-Agent: Evolution 3.58.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 --=-CJH6K1VESEbpPGNJW4eb Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2026-02-27 at 05:17 -0800, Greg KH wrote: > On Fri, Feb 27, 2026 at 08:12:59AM -0500, Genes Lists wrote: > > On Fri, 2026-02-27 at 07:23 -0500, Genes Lists wrote: > > > On Fri, 2026-02-27 at 09:00 +0100, Thorsten Leemhuis wrote: > > > > Lo! > > > >=20 > > >=20 > > > Repeating the nft error message here for simplicity: > > >=20 > > > =C2=A0Linux version 7.0.0-rc1-custom-1-00124-g3f4a08e64442 ... > > > =C2=A0 ... > > > =C2=A0 In file included from /etc/nftables.conf:134:2-44: > > > =C2=A0 ./etc/nftables.d/set_filter.conf:1746:7-21: Error: > > > =C2=A0 Could not process rule: File exists > > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0 xx.xxx.xxx.x/23, > > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0 ^^^^^^^^^^^^^^^ > > >=20 > >=20 > > Resolved by updating userspace. > >=20 > > I can reproduce this error on non-production machine and found this > > error is resolved by re-bulding updated nftables, libmnl and > > libnftnl: > >=20 > > With these versions nft rules now load without error: > >=20 > > =C2=A0- nftables commit de904e22faa2e450d0d4802e1d9bc22013044f93 > > =C2=A0- libmnl=C2=A0=C2=A0 commit 54dea548d796653534645c6e3c8577eaf7d77= 411 > > =C2=A0- libnftnl commit 5c5a8385dc974ea7887119963022ae988e2a16cc > >=20 > > All were compiled on machine running 6.19.4. >=20 > Odd, that shouldn't be an issue, as why would the kernel version you > build this on matter? >=20 > What about trying commit f175b46d9134 ("netfilter: nf_tables: add > .abort_skip_removal flag for set types")? >=20 > thanks, >=20 > greg k-h - all were rebuilt from git head=C2=A0 =C2=A0 Have not had time to explore what specific change(s) triggered the issue yet. - commit f175b46d9134 =C2=A0 I can reproduce on non-production machine - will check this and report back. gene --=-CJH6K1VESEbpPGNJW4eb Content-Type: application/pgp-signature; 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