warning::symbols(7stap) — Linux manual page

NAME | DESCRIPTION | SEE ALSO | COLOPHON

WARNING::SYMBOLS(7stap)                          WARNING::SYMBOLS(7stap)

NAME         top

       warning::symbols - systemtap missing-symbols warnings

DESCRIPTION         top

       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         top

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

COLOPHON         top

       This page is part of the systemtap (a tracing and live-system
       analysis tool) project.  Information about the project can be
       found at ⟨https://sourceware.org/systemtap/⟩.  If you have a bug
       report for this manual page, send it to systemtap@sourceware.org.
       This page was obtained from the project's upstream Git repository
       ⟨git://sourceware.org/git/systemtap.git⟩ on 2021-08-27.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2021-08-26.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

                                                 WARNING::SYMBOLS(7stap)

Pages that refer to this page: warning::debuginfo(7stap)