[next-20220721] Build failure powerpc (tools/bpf)

Sachin Sant sachinp at linux.ibm.com
Fri Jul 22 17:04:14 AEST 2022


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


Reverting this commit allows me to build the kernel.

Have attached .config used for build.

- Sachin

-------------- next part --------------
A non-text attachment was scrubbed...
Name: config_next
Type: application/octet-stream
Size: 169436 bytes
Desc: not available
URL: <http://lists.ozlabs.org/pipermail/linuxppc-dev/attachments/20220722/8bda50e9/attachment-0001.obj>


More information about the Linuxppc-dev mailing list