As a part of EAP 7.2.4 there was upgrade of jackson library which disables deserializations of common classes and following exception is thrown: org.codehaus.jackson.map.JsonMappingException: Illegal type (java.util.ArrayList) to deserialize: prevented for security reasons This is similar issue which was raised in RHV 3.6 when EAP 6.4.20 was released. This issue was mitigated on RHV side (BZ1580319 and BZ1577407), but AFAIR it was decided that this is only mitigation for EAP 6.4.z and in EAP 7 will be used the fix which will not break backward compatibility.
Created attachment 1618181 [details] Logs with full exception
WARN: Bug status (ON_QA) wasn't changed but the folowing should be fixed: [Found non-acked flags: '{}', ] For more info please contact: rhv-devops: Bug status (ON_QA) wasn't changed but the folowing should be fixed: [Found non-acked flags: '{}', ] For more info please contact: rhv-devops
Verified on ovirt-engine-4.4.0-0.13.master.el7.noarch and eap7-wildfly-7.2.6-4.GA_redhat_00001.1.el7eap.noarch
WARN: Bug status (VERIFIED) wasn't changed but the folowing should be fixed: [Found non-acked flags: '{}', ] For more info please contact: rhv-devops: Bug status (VERIFIED) wasn't changed but the folowing should be fixed: [Found non-acked flags: '{}', ] For more info please contact: rhv-devops
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 (Important: RHV Manager (ovirt-engine) 4.4 security, 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/RHSA-2020:3247