Sorry about my late reply. The patch Ed commit is the pre-request to ensure my patch work. The logic of my patch i the loader would grab the build-id from elf file in .gnu.note.build-id section into memory. When kernel crashed, it generate coredump and the build-id loaded from the loader will dump into the coredump file at the same time. After that, when debugger load kernel and it's coredump, the debugger will try to find the elf file of module and its debug file. We can compare the build-id from memory with elf file. If they are different, we shouldn't load the debug file (because they are incompatible).