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Bug#1145141: linux-image-7.1.8+deb13-amd64: CONFIG_NTFS3_FS disabled, reverted to legacy CONFIG_NTFS_FS

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Hi,

On Sun, Aug 23, 2026 at 12:04:15PM +0200, Abdon wrote:
> Package: src:linux
> Version: 7.1.8-1~bpo13+1
> Severity: important
> X-Debbugs-Cc: paramplanko@gmail.com
> 
> Dear Maintainer,
> 
> Comparing /boot/config-* across recent backports (trixie) kernels:
> 
>   linux-image-7.1.3+deb13-amd64: CONFIG_NTFS3_FS=m          (modern driver present)
>   linux-image-7.1.7+deb13-amd64: CONFIG_NTFS3_FS not set, CONFIG_NTFS_FS=m instead
>   linux-image-7.1.8+deb13-amd64: same as 7.1.7
> 
> This looks like a regression: the modern ntfs3 driver (read/write, actively
> maintained, enabled after the fix for #998627/#1000697) was replaced by the
> legacy ntfs.ko driver (largely unmaintained, limited write support) between
> 7.1.3 and 7.1.7/7.1.8.

One correction, this is not true, it is not the legacy implementation.
NTFS3 has actually become poorly maintined after it got accepted and
the ntfs driver itself was revamped completely and is a new
implementation, see
https://kernelnewbies.org/Linux_7.1#New_NTFS_implementation

As Chris pointed out this will still have an impact on util-linux as
well, so we have to decide if the change should be rolled back for the
bpo kernels specifically and continue to ship ntfs3 as long it exists
in the kernel (though it has as well important yet unadressed issues),
or e.g. ntfs driver should get an alias for ntfs3 if ntfs3 is not
enabled or another solution needs to be implemented.

Regards,
Salvatore

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Bug#1145141: linux-image-7.1.8+deb13-amd64: CONFIG_NTFS3_FS disabled, reverted to legacy CONFIG_NTFS_FS Abdon <paramplanko@gmail.com> - 2026-08-23 12:10 +0200
  Bug#1145141: linux-image-7.1.8+deb13-amd64: CONFIG_NTFS3_FS disabled, reverted to legacy CONFIG_NTFS_FS Chris Hofstaedtler <zeha@debian.org> - 2026-08-25 12:00 +0200
  Processed: Re: Bug#1145141: linux-image-7.1.8+deb13-amd64:  CONFIG_NTFS3_FS disabled, reverted to legacy CONFIG_NTFS_FS "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-08-25 12:00 +0200
  Bug#1145141: linux-image-7.1.8+deb13-amd64: CONFIG_NTFS3_FS disabled, reverted to legacy CONFIG_NTFS_FS Salvatore Bonaccorso <carnil@debian.org> - 2026-08-25 12:20 +0200

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