that is a backtrace that also includes inline frames (as displayed by "where" in fhpd.
you can use fstack -v or after the following patch you can also use fstack -c. But this bug might also depend on http://sourceware.org/bugzilla/show_bug.cgi?id=5730 commit cc9ac95bda7b3ebb504f9be9b67168c7aa6d6ee3 Author: Sami Wagiaalla <swagiaal@redhat.com> Date: Fri Feb 15 16:17:18 2008 -0500 swagiaal: Added printing of virtual frames to -c option. frysk-core/frysk/bindir/ChangeLog +2008-02-15 Sami Wagiaalla <swagiaal@redhat.com> + + * fstack.java: Added printing of virtual frames to -c. +