On Wed, 2020-10-21 at 20:24 +0200, Jiri Olsa wrote: > On Wed, Oct 21, 2020 at 12:27:20PM -0400, Bastien Nocera wrote: > > Hey, > > > > I'm trying to build test kernels on my Fedora 33 machine > > and ran into: > > https://bugzilla.redhat.com/show_bug.cgi?id=1890107 > > > > Does anyone know a work-around for this? I tried a "dnf downgrade", > > to no avail. > > if your problem is broken dwarf info then I don't have any > workaround, if you can't build kernel because of that, try > to disable CONFIG_DEBUG_INFO_BTF Yes, that is currently the only option. We might be able to fix pahole to work around some missing DWARF information, but it would be good to get to the bottom of the gcc bugs first (I do think pahole relies too much on the DWARF information being perfect, it wouldn't hurt if pahole would have some extra sanity checks to not produce duplicate types itself). Best would be to get more small reproducers for the gcc bugs. Currently the gcc team will have to try building their own kernel. It would be good to have the preprocessed sources attached to the bugs to give them a self-contained reproducer. Cheers, Mark _______________________________________________ kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/kernel@xxxxxxxxxxxxxxxxxxxxxxx
