[kbuild-all] [bpf-next:master 1/1] libbpf.c:9012:37: error: '%s' directive output may be truncated writing up to 127 bytes into a region of size between 62 and 189

tree: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master head: 467b3225553a7945a896efabffb0b24871561ce3 commit: 467b3225553a7945a896efabffb0b24871561ce3 [1/1] libbpf: Introduce legacy kprobe events support config: x86_64-rhel-8.3-kselftests (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?... git remote add bpf-next https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git git fetch --no-tags bpf-next master git checkout 467b3225553a7945a896efabffb0b24871561ce3 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): libbpf.c: In function 'poke_kprobe_events': 9012 | snprintf(cmd, sizeof(cmd), "%c:%s %s", | ^~ libbpf.c:9012:3: note: 'snprintf' output between 4 and 258 bytes into a destination of size 192 9012 | snprintf(cmd, sizeof(cmd), "%c:%s %s", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 9013 | retprobe ? 'r' : 'p', | ~~~~~~~~~~~~~~~~~~~~~ 9014 | probename, | ~~~~~~~~~~ 9015 | offset ? probefunc : name); | ~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors make[5]: *** [tools/build/Makefile.build:96: tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf.o] Error 1 make[4]: *** [Makefile:161: tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf-in.o] Error 2 make[3]: *** [Makefile:45: tools/bpf/resolve_btfids//libbpf/libbpf.a] Error 2 make[2]: *** [Makefile:72: bpf/resolve_btfids] Error 2 make[1]: *** [Makefile:1374: tools/bpf/resolve_btfids] Error 2 make[1]: Target 'modules_prepare' not remade because of errors. make: *** [Makefile:219: __sub-make] Error 2 make: Target 'modules_prepare' not remade because of errors. -- libbpf.c: In function 'poke_kprobe_events': 9012 | snprintf(cmd, sizeof(cmd), "%c:%s %s", | ^~ libbpf.c:9012:3: note: 'snprintf' output between 4 and 258 bytes into a destination of size 192 9012 | snprintf(cmd, sizeof(cmd), "%c:%s %s", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 9013 | retprobe ? 'r' : 'p', | ~~~~~~~~~~~~~~~~~~~~~ 9014 | probename, | ~~~~~~~~~~ 9015 | offset ? probefunc : name); | ~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors make[5]: *** [tools/build/Makefile.build:96: tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf.o] Error 1 make[4]: *** [Makefile:161: tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf-in.o] Error 2 make[3]: *** [Makefile:45: tools/bpf/resolve_btfids//libbpf/libbpf.a] Error 2 make[2]: *** [Makefile:72: bpf/resolve_btfids] Error 2 make[1]: *** [Makefile:1374: tools/bpf/resolve_btfids] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:219: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org