Created attachment 2629 [details] quick fix Install the buildroot to a directory, where the path length exceed 128 characters. Try to run "make oldconfig", the configuration tool is crashing with message buffer overflow detected. The tool "make menuconfig" is probably crashing as well. The buggy file is located here: ..../package/config/confdata.c Function: int conf_write(const char *name) uses arrays of size 128B for path. Am sending you quick fix, which is working for us. Regars JK
Thanks, fixed in git (ported the similar patch from the kernel)