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Description of problem:
The "zipl" program crashes when there are more than 9 *.conf files in /boot/loader/entries/

Version-Release number of selected component (if applicable):
s390utils-2.6.0-21.el8.s390x

How reproducible:
100%

Steps to Reproduce:
1. Install 10 kernels, or at least 10 *.conf files in /boot/loader/entries/ (they can also be copies that point to the same kernel again)
2. Run "zipl"

Actual results:
zipl crashes with:
double free or corruption (out)
Aborted (core dumped)

Expected results:
No crash, zipl works correctly, or at least prints out a proper error that it can not handle more than 9 config files.

Additional info:
Problem seems to be known to upstream already:
https://github.com/ibm-s390-tools/s390-tools/issues/68

Created attachment 1621480 [details]
[PATCH] - zipl: fix the scanned tokens array size calculation (#1751587)

I've proposed a fix for this issue upstream on the following pull-request:

https://github.com/ibm-s390-tools/s390-tools/pull/73

And I'm attaching a patch for the s390utils package that cherry-picks the fix.

fixed via https://github.com/ibm-s390-tools/s390-tools/commit/8bfe18e674e17a20682dbd1fa0e4813c789e22e5

------- Comment From stefan.haberland.com 2019-12-12 08:22 EDT-------
verified that patch is included in s390utils-2.6.0-23.el8.src.rpm

Partner verified the functionality. Commit 217345c6f87eaeae8d5ef4c5a7620f2608221f48 in rhel-8.2.0 branch of s390utils.git claims to fix this bug. Setting verified.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:1826