Hi, are libmnl debug symbols available? mnl_cb_run() returns -1 without calling the cb(). I found a file using debuginfod-find, and did so in gdb: (gdb) add-symbol-file /home/ale/.cache/debuginfod_client/c27acdf07e5746f0a6c74055e6b21dbe700e054d/debuginfo add symbol table from file "/home/ale/.cache/debuginfod_client/c27acdf07e5746f0a6c74055e6b21dbe700e054d/debuginfo" (y or n) y Reading symbols from /home/ale/.cache/debuginfod_client/c27acdf07e5746f0a6c74055e6b21dbe700e054d/debuginfo... (gdb) break mnl_cb_run Breakpoint 1 at 0x2860 (gdb) run Starting program: /my/client [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Breakpoint 1.2, 0x00007ffff7cb9860 in mnl_cb_run () from /usr/lib/x86_64-linux-gnu/libmnl.so.0 (gdb) n Single stepping until exit from function mnl_cb_run, which has no line number information. So it's not a good debug symbol file, is it? What am I missing? TIA for any hint Ale --