On Tue, Dec 22, 2020 at 3:18 PM Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > > FYI, there is a reason why kallsyms_lookup is not exported any more. > I don't think adding that back through a backdoor is a good idea. Did you maybe mean kallsyms_lookup_name (the one that looks an address up based on a symbol name) ? It used to be exported but isn't anymore indeed. However, this is not what we're trying to do. As far as I can tell, kallsyms_lookup (the one that looks a symbol name up based on an address) has never been exported but its close cousins sprint_symbol and sprint_symbol_no_offset (which only call kallsyms_lookup and pretty print the result) are still exported, they are also used by vsprintf. Is this an issue ?