Bug#982056: cgroup: cgroup2: unknown option "memory_recursiveprot"

From	Salvatore Bonaccorso <carnil@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#982056: cgroup: cgroup2: unknown option "memory_recursiveprot"
Date	2021-02-06 12:20 +0100
Message-ID	<BFtN8-7tJ-9@gated-at.bofh.it> (permalink)
References	<BFlcR-2f6-3@gated-at.bofh.it> <BFlcR-2f6-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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Hi,

On Sat, Feb 06, 2021 at 10:02:06AM +0800, xiao sheng wen wrote:
> Package: src:linux
> Version: 4.19.171-2
> Severity: normal
> 
> On my notebook boot use this version kernel,there is this error info display:
> 
> cgroup: cgroup2: unknown option "memory_recursiveprot"
> 
> This error info don't display in other version kernel.

From the attached log you seem to run systemd from buster-backports
(247.2-5~bpo10+1). But from their NEWS in the changes done with 247:

        * The cgroup2 file system is now mounted with the
          "memory_recursiveprot" mount option, supported since kernel 5.7. This
          means that the MemoryLow= and MemoryMin= unit file settings now apply
          recursively to whole subtrees.

The support for thi was only added in 5.7-rc1 so if you need this you
will need as well the kernel from buster-backports.

Regards,
Salvatore

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Bug#982056: cgroup: cgroup2: unknown option "memory_recursiveprot" Salvatore Bonaccorso <carnil@debian.org> - 2021-02-06 12:20 +0100
  Bug#982056: cgroup: cgroup2: unknown option "memory_recursiveprot" xiao sheng wen(肖盛文) <atzlinux@sina.com> - 2021-02-06 16:50 +0100

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