Re: Linux 6.19.4 - Oops, regression

[Genes Lists <lists@sapience.com>]

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On Fri, 2026-02-27 at 08:32 -0500, Greg KH wrote:
> On Fri, Feb 27, 2026 at 08:18:52AM -0500, Genes Lists wrote:
> > On Fri, 2026-02-27 at 07:09 -0500, Genes Lists wrote:
> > > On Fri, 2026-02-27 at 01:26 -0500, Kris Karas (Bug Reporting)
> > > wrote:
> > > > Greg KH wrote:
> > > > > 
> > > 
> > >   Linux version 7.0.0-rc1-custom-1-00124-g3f4a08e64442 ...
> > >   ...
> > >   In file included from /etc/nftables.conf:134:2-44:
> > >   ./etc/nftables.d/set_filter.conf:1746:7-21: Error:
> > >   Could not process rule: File exists
> > 
> > Sorry for noise, not kernel related.
> > Resolved by updated userspace.
> > 
> > Resolved by rebuilding userspace nftables on 6.19.4. 
> > I used git head for all.
> > 
> >  nft rules now load without error using:
> > 
> >  - nftables commit de904e22faa2e450d0d4802e1d9bc22013044f93
> >  - libmnl   commit 54dea548d796653534645c6e3c8577eaf7d77411
> >  - libnftnl commit 5c5a8385dc974ea7887119963022ae988e2a16cc
> 
> Yet 7.0-rc1 worked just fine?  That feels wrong...

Sorry if was not clear.  Only 6.19.4 has kernel crash. 
The summary is:

 - 7.0-rc1 - no kernel issues
    boots fine and does not crash when nftables is invoked.  
    But, It has an nft error and fails to load rules with
    older nftables userspace.
    Same rules load fine using updated nftables.

- 6.19.4 - crashes whenever nftables is invoked.
  Does not matter which userspace nftables is used, older or newer

- 6.19.3 - works fine.

I will report back soon as have finished testing 6.19.4 with commit
f175b46d9134

gene

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