libdwfl: Don't report and abort on non-file mappings in maps.
proc_maps_report, used for -p or -M, could report modules with names
that were not absolute file names (and not the special vdso marker).
dwfl_linux_proc_find_elf would abort on such names. This isn't a very
nice thing to do in a library. Make sure only real (absolute) file
mappings are reported and don't abort when unexpected file names are
found, just report failure.
Test case with some examples as found in Linux /proc/PID/maps added.
Signed-off-by: Mark Wielaard <mjw@redhat.com>
5 files changed