Copied SRU justification from bug 1848922. ** Description changed:
+ [SRU Justification for backport-iwlwifi-dkms] + + [Impact] + FTBFS against v5.3 kernels on Eoan/Focal. + + [Fix] + * Backport fix from upstream commit f47729b94e11 (backport: rename ktime_get_boot_ns for v5.3+). + * Also updates -fcf-protection=none usage for bug + 1830961. + + [Test Case] + Verified DKMS module build on linux-oem/linux-oem-osp1/linux-generic >= 4.10 kernels on series Xenial/Bionic/Cosmic/Disco/Eoan and Focal. + + [Regression Risk] + Low. There is no functional changes in comparison to 7906-0ubuntu1. + + ======== original bug description ======== + Compiling kernels & kernel modules fails due to these errors: ./include/linux/compiler.h:193:1: error: ‘-mindirect-branch’ and ‘-fcf- protection’ are not compatible (This happens with any kernel modules.) This appears to be due to the changes in 9.1.0-3ubuntu1 enabling -fcf- protection by default on 19.10's gcc-9. Switching to gcc-8 allows compilation to proceed. WORKAROUND: sudo ln -fs gcc-8 /usr/bin/gcc -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1830961 Title: Kernels & kernel drivers fail to build with gcc-9 [error: ‘-mindirect- branch’ and ‘-fcf-protection’ are not compatible] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/backport-iwlwifi-dkms/+bug/1830961/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
