[Bug 1966849] Re: gzip exec format error under WSL1

[Brian Murray]

** Changed in: gzip (Ubuntu Jammy)
   Importance: Undecided => High

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Title:
  gzip exec format error under WSL1

Status in gzip:
  New
Status in gzip package in Ubuntu:
  Fix Released
Status in gzip source package in Jammy:
  Fix Committed
Status in gzip source package in Kinetic:
  Fix Released

Bug description:
  [Impact]

   * Optimization features included in jammy cause atypical alignment of
  LOAD ELF sections. This in turn causes failure to execute binaries on
  WSL1. Upstream have since integrated the optimization features
  included in jammy, but also reverted alignment to a previously used
  one. This also results in working binary under WSL1.

   * Cherry-pick upstream applied revert to alignment to resolve running
  gzip under WSL1.

  [Test Plan]

   * Use powershell to set default WSL version to 1

   * Deploy WSL1, unpack and use updated gzip package

   * gzip --version should execute correctly under WSL 1

  [Where problems could occur]

   * I cannot tell why performance improvement patches introduced
  alignment change, and if revert of the alignment change affects the
  performance. Note that this change aligns the codebase closer to what
  kinetic & upstream now are.

  [Other Info]
   
   * This bug fix is upstream commit https://git.savannah.gnu.org/cgit/gzip.git/commit/gzip.c?id=23a870d14a49803c6d2579071886c1acf497c9d1

  ---

  gzip version 1.10-4ubuntu3 fails to run under WSL1 on Windows
  19044.1620, making WSL pretty much unusable.

  bash: /usr/bin/gzip: cannot execute binary file: Exec format error

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: gzip 1.10-4ubuntu3
  ProcVersionSignature: Microsoft 4.4.0-19041.1237-Microsoft 4.4.35
  Uname: Linux 4.4.0-19041-Microsoft x86_64
  ApportVersion: 2.20.11-0ubuntu79
  Architecture: amd64
  CasperMD5CheckResult: unknown
  Date: Tue Mar 29 06:40:33 2022
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=pl_PL.UTF-8
   SHELL=/usr/bin/fish
  SourcePackage: gzip
  UpgradeStatus: No upgrade log present (probably fresh install)

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