On Wed, 2021-10-27 at 18:14 +0530, Naresh Kamboju wrote:

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@linaro.org

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

I also just experienced this one and will send a fix shortly.