On Nov 4, 2021, at 1:37 PM, kernel test robot [off-list ref] wrote:

Hi Song,

I love your patch! Yet something to improve:

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

url:    https://github.com/0day-ci/linux/commits/Song-Liu/introduce-bpf_find_vma/20211104-150210
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: riscv-randconfig-r034-20211104 (attached as .config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
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
       # https://github.com/0day-ci/linux/commit/e219efba8d04dede08b1d87fa1e8c5c01180caaf
       git remote add linux-review https://github.com/0day-ci/linux
       git fetch --no-tags linux-review Song-Liu/introduce-bpf_find_vma/20211104-150210
       git checkout e219efba8d04dede08b1d87fa1e8c5c01180caaf
       # save the attached .config to linux build tree
       mkdir build_dir
       COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All errors (new ones prefixed by >>):

  riscv64-linux-ld: kernel/bpf/task_iter.o: in function `bpf_find_vma':
  task_iter.c:(.text+0x3dc): undefined reference to `mmap_unlock_work'

quoted

quoted

riscv64-linux-ld: task_iter.c:(.text+0x3e0): undefined reference to `mmap_unlock_work'

  riscv64-linux-ld: task_iter.c:(.text+0x400): undefined reference to `mmap_unlock_work'

Sigh, I didn't see this before sending v3. Will fix in v4. 

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org 
<.config.gz>