XPost: linux.debian.kernel   
   From: vincent.debian@free.fr   
   To: 1127659@bugs.debian.org   
   Copy: debian-kernel@lists.debian.org   
   Copy: chrony@packages.debian.org   
      
   Hi Salvatore,   
      
   Le 2026-02-12 16:14, Salvatore Bonaccorso a écrit :   
   > Control: affects -1 - chrony   
   > Control: reassign -1 src:chrony 4.6.1-3   
   > Control: found -1 4.3-2+deb12u1   
   > Control: found -1 4.3-2   
   > Control: fixed -1 4.8-1   
   > Control: tags -1 + upstream fixed-upstream bookworm trixie   
   >    
   > Hi Jan,   
   >    
   > On Wed, Feb 11, 2026 at 11:40:12AM +0100, Jan Luebbe wrote:   
   > > Package: src:linux   
   > > Version: 6.12.69-1   
   > > Severity: important   
   > > Tags: upstream   
   > > X-Debbugs-Cc: jlu@pengutronix.de   
   > >    
   > > Dear Maintainer,   
   > >    
   > > I've just debugged a new issue with 6.12.69+deb13 vs. 6.12.63+deb13.   
   > > chrony 4.6.1 (the version in Debian stable) started failing to start   
   > > with "Fatal error : Could not enable external PHC timestamping".   
   > >    
   > > We use the extpps mode with PTP hardware clocks. It seems that   
   > > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux   
   git/commit/?id=97529630d85f910f4e6dfc615f1d111ada9448e3   
   > > changes /dev/ptp* to now require FDs open for writing to configure   
   > > extpps. Chrony has a fix   
   > > (https://gitlab.com/chrony/chrony/-/commit/f78e4681eff71d941   
   ab3be5ee406d920a155a20),   
   > > but that's only in the version in testing/sid.   
   >    
   > We talked about this bug on yesterdays team meeting, and it was   
   > commented as the kernel change is a security fix, it likely won't be   
   > reverted and the fix should be backported for chrony to the affected   
   > releases and schedule fixes via the point releases (with ideally the   
   > option to make an update as well make it as a SUA to get earlier to   
   > users affected by the issue).   
      
   Fair!   
       
   > Would you be willing to work on those backports and propose the point   
   > release updates?   
      
   I will handle this. I will provide a build for Jan to test because I do   
   not have that kind of setup at hand.   
       
   > https://salsa.debian.org/kernel-team/meetings/-/wikis/20260211   
   >    
   > Regards,   
   > Salvatore   
       
   Cheers,   
   Vincent   
      
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