Bug#1144613: linux-image-7.1.6+deb14-amd64: ext4 st_mtime and time() inconsistency

From	Vincent Lefevre <vincent@vinc17.net>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1144613: linux-image-7.1.6+deb14-amd64: ext4 st_mtime and time() inconsistency
Date	2026-08-19 19:20 +0200
Message-ID	<NtS7f-bVn2-7@gated-at.bofh.it> (permalink)
References	(4 earlier) <NtOZH-bTCD-1@gated-at.bofh.it> <NtPsJ-bTWa-9@gated-at.bofh.it> <NtQf7-bUnP-7@gated-at.bofh.it> <NsTI5-bnRg-1@gated-at.bofh.it> <NtQf7-bUnP-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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On 2026-08-19 17:00:45 +0200, Vincent Lefevre wrote:
> On 2026-08-19 16:22:53 +0200, Vincent Lefevre wrote:
> > On 2026-08-19 15:50:16 +0200, Salvatore Bonaccorso wrote:
> > > I think this is a consequence of 4e40eff0b5737c ("fs: add
> > > infrastructure for multigrain timestamps") and following in 6.13-rc1.
> 
> Probably not (or not entirely), as there is another issue not involving
> the filesystem (see below).

With the 6.12.96+deb13-amd64 kernel, I get the inconsistency
between time(NULL) and clock_gettime(CLOCK_REALTIME, ...),
and even with 6.1.0-52-amd64 (bookworm).

This could mean that this old issue propagated to the filesystem,
probably due to 4e40eff0b5737c.

-- 
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)

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Bug#1144613: linux-image-7.1.6+deb14-amd64: ext4 st_mtime and time() inconsistency Vincent Lefevre <vincent@vinc17.net> - 2026-08-19 14:00 +0200
  Bug#1144613: linux-image-7.1.6+deb14-amd64: ext4 st_mtime and time() inconsistency Vincent Lefevre <vincent@vinc17.net> - 2026-08-19 14:30 +0200
    Processed: Re: linux-image-7.1.6+deb14-amd64: ext4 st_mtime and  time() inconsistency "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-08-19 14:30 +0200
    Bug#1144613: linux-image-7.1.6+deb14-amd64: ext4 st_mtime and time() inconsistency Salvatore Bonaccorso <carnil@debian.org> - 2026-08-19 16:00 +0200
      Bug#1144613: linux-image-7.1.6+deb14-amd64: ext4 st_mtime and time() inconsistency Vincent Lefevre <vincent@vinc17.net> - 2026-08-19 16:30 +0200
        Bug#1144613: linux-image-7.1.6+deb14-amd64: ext4 st_mtime and time() inconsistency Vincent Lefevre <vincent@vinc17.net> - 2026-08-19 17:20 +0200
          Bug#1144613: linux-image-7.1.6+deb14-amd64: ext4 st_mtime and time() inconsistency Vincent Lefevre <vincent@vinc17.net> - 2026-08-19 19:20 +0200

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