Hi Jesper, I love your patch! Perhaps something to improve: [auto build test WARNING on bpf/master] url: https://github.com/0day-ci/linux/commits/Jesper-Dangaard-Brouer/bpf-avoid-using-returning-file-descriptor-value-zero/20200609-005457 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git master config: i386-randconfig-s001-20200609 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-247-gcadbd124-dirty # save the attached .config to linux build tree make W=1 C=1 ARCH=i386 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> kernel/bpf/syscall.c:692:5: sparse: sparse: symbol 'bpf_anon_inode_getfd' was not declared. Should it be static? Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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