Re: [PATCH bpf-next 3/6] bpf: switch BPF verifier log to be a rotating log by default

[kernel test robot <lkp@xxxxxxxxx>]

Hi Andrii,

I love your patch! Yet something to improve:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Andrii-Nakryiko/bpf-split-off-basic-BPF-verifier-log-into-separate-file/20230317-023431
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20230316183013.2882810-4-andrii%40kernel.org
patch subject: [PATCH bpf-next 3/6] bpf: switch BPF verifier log to be a rotating log by default
config: arm-randconfig-r046-20230312 (https://download.01.org/0day-ci/archive/20230317/202303171418.1wRw0c8S-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/intel-lab-lkp/linux/commit/f2876fe2427e5bdfbbb27980025b969c93f46c4b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Andrii-Nakryiko/bpf-split-off-basic-BPF-verifier-log-into-separate-file/20230317-023431
        git checkout f2876fe2427e5bdfbbb27980025b969c93f46c4b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202303171418.1wRw0c8S-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: __aeabi_uldivmod
   >>> referenced by log.c
   >>>               kernel/bpf/log.o:(bpf_verifier_vlog) in archive vmlinux.a
   >>> referenced by log.c
   >>>               kernel/bpf/log.o:(bpf_verifier_vlog) in archive vmlinux.a
   >>> referenced by log.c
   >>>               kernel/bpf/log.o:(bpf_vlog_finalize) in archive vmlinux.a
   >>> did you mean: __aeabi_uidivmod
   >>> defined in: vmlinux.a(arch/arm/lib/lib1funcs.o)

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests