bionic (7) warning::symbols.7stap.gz

NAME

       warning::symbols - systemtap missing-symbols warnings

DESCRIPTION

       For some probing operations, where DWARF debugging data is not available, systemtap needs ELF symbols for
       the relevant binaries.  This allows at least probe addresses to be calculated, some  variables  resolved,
       and with @cast() and headers, maybe even some types.

       kernel symbol table
              Systemtap may need a linux-build style System.map file to find addresses of kernel functions/data.
              It may be possible to create it by hand:

              % su
              # cp /proc/kallsyms /boot/System.map-`uname -r`
              or
              # nm /lib/modules/`uname -r`/build/vmlinux > /boot/System.map-`uname -r`

       minisymbols
              On some systems, binaries may be compiled with a subset of symbols useful for function tracing and
              backtraces.   This  'Minisymbols'  is a xz compressed section labeled .gnu_debugdata.  Support for
              minisymbols relies on elfutils version 0.156 or later.

       compressed symbols
              On some systems, symbols may be available, but compressed into .zdebug_*  sections.   Support  for
              compressed symbols relies on elfutils version 0.153 or later.

SEE ALSO

       stap(1),
       stappaths(7),
       strip(1),
       warning::debuginfo(7stap),
       error::dwarf(7stap),
       error::reporting(7stap),
       http://fedoraproject.org/wiki/Features/MiniDebugInfo

                                                                                         WARNING::SYMBOLS(7stap)