[Bug 1828282] Re: busybox 1.30.1 crashes bzip2 test case with glibc 2.29, always

[Dimitri John Ledkov]

@IBM
Please close your LTC bugzilla entry. We will continue to use this LP issue to pursue busybox upstream. Thanks a lot for your input!

** Changed in: busybox (Ubuntu)
       Status: New => Triaged

** Changed in: glibc (Ubuntu)
       Status: New => Invalid

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Title:
  busybox 1.30.1 crashes bzip2 test case with glibc 2.29, always

Status in Ubuntu on IBM z Systems:
  Invalid
Status in busybox package in Ubuntu:
  Triaged
Status in glibc package in Ubuntu:
  Invalid

Bug description:
  Steps to reproduce:

  1) Get a system with glibc 2.29

  2) Get busybox 1.30.1 installed (e.g. eoan, or download busybox
  package from
  https://launchpad.net/ubuntu/+source/busybox/1:1.30.1-4ubuntu3/+build/16724246
  and use $ apt install ./busybox*.deb to install)

  3) Get busybox 1.30.1 source code, e.g. $ pull-lp-source busybox
  Or like download the orig tarball from https://launchpad.net/ubuntu/+source/busybox/1:1.30.1-4ubuntu3

  4) Run the bunzip2 testsuite:

  cd testsuite/
  ECHO=/bin/echo ./bunzip2.tests

  Observe that with glibc 2.29 the:
  PASS: bunzip2: bz2_issue_11.bz2 corrupted example

  is XFAIL or FAIL, on s390x, whereas it passes on all other arches.

  If one uses glibc 2.28 (ie. use Cosmic, and install busybox & use
  matching test suite from eoan using links above) one can observe that
  the testcase always passes.

  We suspect this might be a glibc 2.29 s390x-specific setjmp
  regression. Probably due to setjmp usage in
  ./archival/libarchive/decompress_bunzip2.c

  The tests were done on a z13 machine.

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