[Bug 1962225] Please test proposed package

[Steve Langasek]

Hello Michael, or anyone else affected,

Accepted glibc into focal-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/glibc/2.31-0ubuntu9.9
in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
focal to verification-done-focal. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-focal. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

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https://bugs.launchpad.net/bugs/1962225

Title:
  preinst check that kernel revision < 255 now does more harm than good

Status in glibc package in Ubuntu:
  Fix Released
Status in glibc source package in Bionic:
  Confirmed
Status in glibc source package in Focal:
  Fix Committed

Bug description:
  [impact]
  Amazon Linux 2 currently has a kernel with version 4.14.262-200.489.amzn2.x86_64. This causes complaints from libc6's preinst that asserts that the "revision" part of the kernel version is less than 255.

  The significance of the check is much less than it used to be when the
  major part of the kernel version was stuck at 2, so we should follow
  Debian and just drop it.

  [test case]
  Boot an Amazon Linux 2 instance. Install docker. Run an ubuntu container of the series being tested. Run "apt-get update && apt-get install --reinstall libc6" and look for error messages / failures.

  [regression potential]
  It's possible that some binaries run using the "uname26" personality will fail -- but they will already fail with the glibc as currently installed, there's no value in preventing an upgrade.

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