Regression found on arm64 gcc-10 and gcc-11 built with defconfig Following build warnings / errors reported on linux next 20211027. metadata: git_describe: next-20211027 git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git_short_log: ae5179317e79 (\"Add linux-next specific files for 20211027\") target_arch: arm64 toolchain: gcc-11 build error : -------------- ERROR: modpost: module drm_cma_helper uses symbol dma_buf_vunmap from namespace DMA_BUF, but does not import it. ERROR: modpost: module drm_cma_helper uses symbol dma_buf_vmap from namespace DMA_BUF, but does not import it. make[2]: *** [/builds/linux/scripts/Makefile.modpost:134: modules-only.symvers] Error 1 make[2]: *** Deleting file 'modules-only.symvers' make[2]: Target '__modpost' not remade because of errors. Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> build link: ----------- https://builds.tuxbuild.com/205SAU159J0g6lSlRRS11o5hHyY/build.log build config: ------------- https://builds.tuxbuild.com/205SAU159J0g6lSlRRS11o5hHyY/config # To install tuxmake on your system globally # sudo pip3 install -U tuxmake tuxmake --runtime podman --target-arch arm64 --toolchain gcc-11 --kconfig defconfig -- Linaro LKFT https://lkft.linaro.org