Hi - On Wed, Nov 24, 2010 at 09:13:48AM +0200, Timo Juhani Lindfors wrote: > Actual results: > 1) stap fails with > > semantic error: not accessible at this address (0xffffffff812f9f86): > identifier '$prev' at /usr/share/systemtap/tapset/scheduler.stp:146:13 > source: prev_pid = $prev->tgid > ^ > [...]
This indicates that the kernel's DWARF debugging data neglected to identify where that local/parameter data was accessible. The newer the GCC version used to build the kernel etc., the better such debug data quality is. RHEL/Fedora gcc 4.4.* contain many dwarf-related fixes, and FSF gcc 4.5 is good too. Older than that, and stap (and other dwarf consumers) will have a harder time. - FChE -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
