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NULL pointer dereference when probing Java methods
- From: Tetsuo Handa <penguin-kernel at I-love dot SAKURA dot ne dot jp>
- To: systemtap at sourceware dot org
- Cc: lberk at redhat dot com
- Date: Wed, 21 Dec 2016 23:04:38 +0900
- Subject: NULL pointer dereference when probing Java methods
- Authentication-results: sourceware.org; auth=none
Hello.
SystemTap allows probing Java methods with the aid of byteman
( https://developers.redhat.com/blog/2014/01/10/probing-java-w-systemtap/ ).
But is probing Java methods which have arguments of Java objects other than
String supported? The java process (from OpenJDK 1.7 in CentOS 7) crashes
with NULL pointer dereference inside HelperSDT.c if I try to probe such
Java methods. If it is a not-yet-known bug, I can provide steps to reproduce.
Regards.