Hello,
Yes, this is a known problem util-linux / kernel issue.
I got some information from Karel Zak (from util-linux)
,,
The problem is that original mount(2) syscall is limited to 4K buffer,
but the new mount APi fsconfig() syscall is limited to 256 bytes.
Already reported for v2.39:
https://github.com/util-linux/util-linux/issues/2287
Kernel bugfix:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=b36a5780cb44a16d4384639740d87e08d4cee627
You need to split the long lowerdir= into more options
mount -o lowerdir+=/dir1,lowerdir+=/dir2,...
See the kernel docs
https://docs.kernel.org/filesystems/overlayfs.html
"
But the package in this version (in my opinion) should not be included in
Debian...
BR
Przemysław Guza
---------- Forwarded message ---------
From: Chris Hofstaedtler <[email protected]>
Date: Mon, 15 Sept 2025 at 00:26
Subject: Re: Bug#1111642: [ critical ] Debian 13, Package util-linux,
Version: 2.41-5 doesn't work properly
To: Przemysław Guza <[email protected]>, <[email protected]>
Control: tags -1 + upstream help
On Wed, Aug 20, 2025 at 03:34:53PM +0200, Przemysław Guza wrote:
> Package: util-linux
> Version: 2.41-5
>
> Program mount doesn't accept longer list of the parameters.
Please report this bug upstream, as I don't see why this should be
introduced by the Debian packaging. Please see the following link
on how to report bugs upstream:
https://github.com/util-linux/util-linux/blob/master/README
Thank you,
Chris
