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Upstream issue reported from Fedora [1], where two [2] [3] auto detected issues were reported with quite similar back traces. According to Ondřej Surý from upstream, that issue did not happen after mentioned changes.

1. https://gitlab.isc.org/isc-projects/bind9/issues/1428
2. https://gitlab.isc.org/isc-projects/bind9/issues/1353
3. https://gitlab.isc.org/isc-projects/bind9/issues/1352

*** Bug 1787426 has been marked as a duplicate of this bug. ***

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 (bind bug fix and enhancement update), 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-2020:3871