RFR(s) 8246382: assert in MetaspaceShared::map_archives

Calvin Cheung calvin.cheung at oracle.com
Thu Jun 11 01:47:17 UTC 2020

bug: https://bugs.openjdk.java.net/browse/JDK-8246382
webrev: http://cr.openjdk.java.net/~ccheung/jdk15/8246382/webrev.00/

The bug is due to the base CDS archive used for dynamic dumping does not 
match the one used during runtime.

Currently, the checking of the base archive header CRC is done in 
DynamicArchive::validate but it is after the assert in 
MetaSpace::map_archives. A fix is to do the check earlier in 

Testing: tier1, 2 (in progress)
               all appcds tests passed locally on linux.



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