[Please ignore this email if it is already reported ] Regression found on s390 gcc-8/9/10 and gcc-11 built with defconfig Following build warnings / errors reported on linux next 20211025. metadata: git_describe: next-20211025 git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git_short_log: 9ae1fbdeabd3 (\"Add linux-next specific files for 20211025\") target_arch: s390 toolchain: gcc-10 build error : -------------- <stdin>:1559:2: warning: #warning syscall futex_waitv not implemented [-Wcpp] {standard input}: Assembler messages: {standard input}:11: Error: Unrecognized opcode: `pushq' {standard input}:12: Error: Unrecognized opcode: `movq' {standard input}:13: Error: Unrecognized opcode: `pushq' {standard input}:14: Error: Unrecognized opcode: `movq' {standard input}:15: Error: Unrecognized opcode: `call' {standard input}:16: Error: Unrecognized opcode: `popq' {standard input}:17: Error: Unrecognized opcode: `leave' {standard input}:18: Error: Unrecognized opcode: `ret' make[3]: *** [/builds/linux/scripts/Makefile.build:288: samples/ftrace/ftrace-direct-multi.o] Error 1 make[3]: Target '__build' not remade because of errors. make[2]: *** [/builds/linux/scripts/Makefile.build:571: samples/ftrace] Error 2 Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> build link: ----------- https://builds.tuxbuild.com/1zzgG8V6qSBH9457ca0kOcQR756/build.log build config: ------------- https://builds.tuxbuild.com/1zzgG8V6qSBH9457ca0kOcQR756/config # To install tuxmake on your system globally # sudo pip3 install -U tuxmake tuxmake --runtime podman --target-arch s390 --toolchain gcc-10 --kconfig defconfig -- Linaro LKFT https://lkft.linaro.org