Bug#996876: systemd bogus(?) remounts since upgrade to 249.5-1

[Michael Biebl]

reassign 996876 src:linux
retitle 996876 filesystem being remounted supports timestamps until 2038
thanks

On Wed, 20 Oct 2021 08:51:44 +0200 10dmar10 <10dmar10 at gmail.com> wrote:
> Package: systemd
> Version: 249.5-1
> Severity: normal
> 
> Hi,
> 
> I noticed since upgrade to systemd 249.5-1 on 2021-10-15 following
> remount warnings in my log files, usually when some service is started.
> 
> While there are no problems caused by this behavior so far (besides spamming into log a lot),
> I assume it is unintended and may indicate some underlying problem.
> 
> 
> log snippets:
> 
> Okt 17 23:54:14 tetranode systemd[1]: Starting Network Name Resolution...
> Okt 17 23:54:14 tetranode systemd[1]: Starting Network Time Synchronization...
> Okt 17 23:54:14 tetranode systemd[1]: Starting Record System Boot/Shutdown in UTMP...
> Okt 17 23:54:14 tetranode systemd[1]: Finished Record System Boot/Shutdown in UTMP.
> Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/lib/systemd/timesync supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)                              Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/lib/systemd/timesync supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:54:14 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:54:14 tetranode systemd[1]: Started Network Time Synchronization.
> Okt 17 23:54:14 tetranode systemd[1]: Reached target System Initialization.
> 
> 
> Okt 17 23:57:49 tetranode dbus-daemon[575]: [system] Activating via systemd: service name='org.freedesktop.UPower' unit='upower.service' requested by ':1.27' (uid=1000 pid=2052 comm="/usr/lib/chromium/chromium --show-component-extens")
> Okt 17 23:57:50 tetranode systemd[1]: Starting Daemon for power management...
> Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/lib/upower supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/tmp supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/lib/upower supports timestamps until 2038 (0x7fffffff)
> Okt 17 23:57:50 tetranode kernel: xfs filesystem being remounted at /run/systemd/unit-root/var/tmp supports timestamps until 2038 (0x7fffffff)

It was concluded that this is a kernel bug.
See also
https://lore.kernel.org/lkml/CAHk-=wim6VGnxQmjfK_tDg6fbHYKL4EFkmnTjVr9QnRqjDBAeA@mail.gmail.com/

and should be addressed in the kernel by only issuing this warning once 
per mount, but not on a remount.

Thus reassigning.

Regards,
Michael
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