Due to a suspected problem in the way systemtap/elfutils compute PC addresses to place int3 probe breakpoints into prelinked shared libraries, sometimes the wrong instruction is modified. This can lead to lost probes, or segmentation violations, or more subtle errors. This problem appears to exist in all versions of systemtap. "prelink -u /usr/lib/libFOO.so" corrects the miscalculations, as a temporary workaround. This issue is being tracked upstream at http://sourceware.org/bugzilla/show_bug.cgi?id=12141
A future refresh of systemtap can update its bundled elfutils to version 0.150 to fix this problem.
Please copy notes from bug #652858, which fixed the corresponding issues in RHEL6.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-1044.html