------- Comment From i...@de.ibm.com 2021-01-25 07:11 EDT-------
Hello, Ubuntu! Did you have a chance to evaluate the attached 18.04 patch?

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https://bugs.launchpad.net/bugs/1903814

Title:
  [binutils] Prevent GOT access rewrite for certain symbols

Status in Ubuntu on IBM z Systems:
  Triaged
Status in binutils package in Ubuntu:
  Fix Released
Status in binutils source package in Bionic:
  New
Status in binutils package in Debian:
  New

Bug description:
  Please backport the following bugfix into Ubuntu LTS:
  https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=e6213e09ed0e

  Some relevant historic links:
  Debian bugreport: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=961736
  glibc bugreport: https://sourceware.org/bugzilla/show_bug.cgi?id=18960

  In s390 kernel context, this bug manifests itself as random errors and
  infinite loops, so it's fairly severe.

  These are the current versions of binutils:
  Package binutils

      xenial (16.04LTS) (devel): GNU assembler, linker and binary utilities
      2.26.1-1ubuntu1~16.04.8 [security]: amd64 i386
      2.26-8ubuntu2 [ports]: arm64 armhf powerpc ppc64el s390x
      xenial-updates (devel): GNU assembler, linker and binary utilities
      2.26.1-1ubuntu1~16.04.8: amd64 arm64 armhf i386 powerpc ppc64el s390x
      bionic (18.04LTS) (devel): GNU assembler, linker and binary utilities
      2.30-21ubuntu1~18.04.4 [security]: amd64 i386
      2.30-15ubuntu1 [ports]: arm64 armhf ppc64el s390x
      bionic-updates (devel): GNU assembler, linker and binary utilities
      2.30-21ubuntu1~18.04.4: amd64 arm64 armhf i386 ppc64el s390x
      focal (20.04LTS) (devel): GNU assembler, linker and binary utilities
      2.34-6ubuntu1: amd64 arm64 armhf i386 ppc64el s390x
      groovy (devel): GNU assembler, linker and binary utilities
      2.35.1-1ubuntu1: amd64 arm64 armhf i386 ppc64el s390x

  The patch applies fine to 2.26 and 2.30 (except for tests, but we
  don't need them). We don't need it on 2.32+.

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