https://bugs.winehq.org/show_bug.cgi?id=54115
--- Comment #4 from Eric Pouech eric.pouech@gmail.com ---
$ gdb /opt/wine/bin/wineserver `pidof wineserver` Excess command line arguments ignored. (206788)
this means two instances of wineserver were running. (gdb attached to first one and reported second). Did gdb pick up the right instance?