On Fri, Dec 18, 2020 at 6:56 AM Lucas De Marchi <lucas.de.marchi@xxxxxxxxx> wrote: > > On Fri, Dec 11, 2020 at 2:19 AM Joe Buehler <aspam@xxxxxxx> wrote: > > > > When running lspci -v on Ubuntu 20.40, I get the error message: > > > > lspci: Unable to load libkmod resources: error -12 > > > > I tracked this down to a possible libkmod issue. The kernel I am using > > has an empty modules.builtin.aliases.bin file (modules.builtin.aliases > > does not exist). > > It is indeed a little bit confusing, but modules.builtin.alias.bin is > created from > modules.builtin.modinfo that should come with the kernel. Is this a > custom kernel or > one from the distro? modules.builtin.alias.bin should either not exist > (in case the kernel > doesn't have modules.builtin.modinfo) or should be a valid index. > > Indeed depmod doesn't create the file unless it has something to > write. I wonder if the error wasn't > because the call to depmod failed for some reason (out of space?). > > Looking at a ubuntu 20.04 system I do have both > modules.builtin.modinfo and modules.builtin.alias.bin. If I remove > modules.builtin.modinfo and call > depmod -a, then the latter is not created. oops, it turned out I was looking in the wrong directory. That should be the behavior, but it's not and and empty modules.builtin.alias.bin is being created. Let me take a closer look what's going on. thanks Lucas De Marchi > > Lucas De Marchi > > > > > kmod_load_resources() doesn't like this. It calls index_mm_open() which > > checks the file size, sees that it is less than sizeof(hdr), error > > terminates, causing kmod_load_resources() to return -ENOMEM. > > > > kmod version 27 as shipped with ubuntu 20.04 > > > > Please copy me on any responses, I am not on this list. > > > > Joe Buehler > >
