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Groups > linux.debian.bugs.dist > #1200471

Bug#1072831: getting memory info fails when running under lxc

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On Sun, 9 Jun 2024 at 01:03, Paul Slootman <paul@debian.org> wrote:
> # free
> free: Unable to create meminfo structure
That's procps_meminfo_new() failing but /proc/meminfo exists.
The function:
  checks the parameters
  allocates some memory for the structure
  runs meminfo_make_hash_failed(), which sets up the hashtable
  runs meminfo_read failed which does some opens, seeks and reads.

Could you check to see if in the container that lxcfs has overwritten
the /proc/meminfo file? They sometimes do this for /proc/uptime. They
might have messed one of the lines up and choked procps; I'm thinking
like a tab/space at the end of the line or something that looks right
to a human but not a computer.

I think we'll need to either run a strace on free or a debugger to see
where exactly the issue is.

I'm not particularly worried about ps. This is a library meminfo issue
so fixing free should fix ps too.

procps after 3.3.17 has a *lot* of changes, but I didn't think parsing
the meminfo file was one of those.

 - Craig

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Bug#1072831: getting memory info fails when running under lxc Paul Slootman <paul@debian.org> - 2024-06-08 17:10 +0200
  Bug#1072831: getting memory info fails when running under lxc Craig Small <csmall@debian.org> - 2024-06-11 01:00 +0200
    Bug#1072831: getting memory info fails when running under lxc Paul Slootman <paul@debian.org> - 2024-06-11 11:30 +0200
      Bug#1072831: getting memory info fails when running under lxc Paul Slootman <paul@debian.org> - 2024-06-11 13:30 +0200
        Bug#1072831: getting memory info fails when running under lxc Jim Warner <james.warner@comcast.net> - 2024-06-12 16:50 +0200
          Bug#1072831: getting memory info fails when running under lxc Jim Warner <james.warner@comcast.net> - 2024-06-12 17:00 +0200
        Bug#1072831: getting memory info fails when running under lxc Craig Small <csmall@debian.org> - 2024-06-23 09:50 +0200
  Bug#1072831: getting memory info fails when running under lxc Craig Small <csmall@dropbear.xyz> - 2024-06-23 23:50 +0200
    Bug#1072831: getting memory info fails when running under lxc Paul Slootman <paul@debian.org> - 2024-06-24 13:40 +0200

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