On Fri, Jul 22, 2022 at 12:04 AM Sachin Sant <sachinp@xxxxxxxxxxxxx> wrote: > > next-20220721 build fails on IBM Power server with following error: > > libbpf.c: In function 'bpf_program__attach_ksyscall': > libbpf.c:10130:45: error: '%s' directive argument is null [-Werror=format-truncation=] > snprintf(func_name, sizeof(func_name), "__%s_sys_%s", > ^~ > cc1: all warnings being treated as errors > make[4]: *** [/home/linux-next/tools/build/Makefile.build:96: /home/linux-next/tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf.o] Error 1 > make[3]: *** [Makefile:157: /home/linux-next/tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf-in.o] Error 2 > make[2]: *** [Makefile:55: /home/linux-next/tools/bpf/resolve_btfids//libbpf/libbpf.a] Error 2 > make[1]: *** [Makefile:76: bpf/resolve_btfids] Error 2 > make: *** [Makefile:1439: tools/bpf/resolve_btfids] Error 2 > > next-20220719 was good. Git bisect points to following commit > > Commit 708ac5bea0ce > libbpf: add ksyscall/kretsyscall sections support for syscall kprobes > > This was addressed by [0], thanks for report! [0] https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=64893e83f916 > Reverting this commit allows me to build the kernel. > > Have attached .config used for build. > > - Sachin >
