[Please ignore this email if it is already reported ] Regression found on parisc gcc-8/9/10 and gcc-11 built with defconfig Following build warnings / errors reported on linux next 20211105. metadata: git_describe: next-20211105 git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git_short_log: b477ae38e815 (\"Add linux-next specific files for 20211105\") target_arch: parisc toolchain: gcc-11 build error : -------------- <stdin>:1559:2: warning: #warning syscall futex_waitv not implemented [-Wcpp] arch/parisc/kernel/stacktrace.c: In function 'walk_stackframe': arch/parisc/kernel/stacktrace.c:25:21: error: implicit declaration of function '__kernel_text_address' [-Werror=implicit-function-declaration] 25 | if (__kernel_text_address(info.ip)) | ^~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors make[3]: *** [scripts/Makefile.build:288: arch/parisc/kernel/stacktrace.o] Error 1 Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> build link: ----------- https://builds.tuxbuild.com/20U3L7IKgdLoEJQrfGdwlmczMDy/build.log build config: ------------- https://builds.tuxbuild.com/20U3L7IKgdLoEJQrfGdwlmczMDy/config # To install tuxmake on your system globally # sudo pip3 install -U tuxmake tuxmake --runtime podman --target-arch parisc --toolchain gcc-11 --kconfig defconfig -- Linaro LKFT https://lkft.linaro.org