Hi all, Please review this change:
JBS: https://bugs.openjdk.java.net/browse/JDK-8240956 webrev: http://cr.openjdk.java.net/~ysuenaga/JDK-8240956/webrev.00/ JDK-8234624 introduced DWARF parser in SA for unwinding native frames in jstack mixed mode. However some error has seen intermittently after that. I investigated the cause of this, I found two concerns: A: lack of buffer (.eh_frame section data) range check B: Language personality routine and Language Specific Data Area (LSDA) are not considered I addd range check for .eh_frame processing, and ignore personality routine and LSDA in this webrev. Also I added bailout code if DWARF processing is failed due to these concerns. This change has passed all tests on submit repo (mach5-one-ysuenaga-JDK-8240956-20200313-1518-9434671), also I tested it on my Fedora 31 box and Oracle Linux 7.7 container. Thanks, Yasumasa
