Regression found on riscv and arc gcc-11 build. Following build warnings / errors reported on linux next 20211117. metadata: git_describe: next-20211117 git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git_short_log: fd96a4057bd0 (\"Add linux-next specific files for 20211117\") target_arch: riscv toolchain: gcc-11 build error : -------------- In file included from net/core/dev.c:105: include/net/gro.h: In function 'ip6_gro_compute_pseudo': include/net/gro.h:413:22: error: implicit declaration of function 'csum_ipv6_magic'; did you mean 'csum_tcpudp_magic'? [-Werror=implicit-function-declaration] return ~csum_unfold(csum_ipv6_magic(&iph->saddr, &iph->daddr, ^~~~~~~~~~~~~~~ csum_tcpudp_magic cc1: some warnings being treated as errors Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> link: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next/-/jobs/1790398957#L73 build link: ----------- https://builds.tuxbuild.com/211schgBXkq5zjdda7io29wMONF/build.log build config: ------------- https://builds.tuxbuild.com/211schgBXkq5zjdda7io29wMONF/config # To install tuxmake on your system globally # sudo pip3 install -U tuxmake tuxmake --runtime podman --target-arch riscv --toolchain gcc-11 --kconfig defconfig -- Linaro LKFT https://lkft.linaro.org