On Wed, Jul 01, 2020 at 02:11:10AM +0800, kernel test robot wrote: >Hi Wei, > >Thank you for the patch! Perhaps something to improve: > >[auto build test WARNING on mmotm/master] > >url: https://github.com/0day-ci/linux/commits/Wei-Yang/mm-sparse-only-sub-section-aligned-range-would-be-populated/20200630-101713 >base: git://git.cmpxchg.org/linux-mmotm.git master >config: x86_64-allnoconfig (attached as .config) >compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project cf1d04484344be52ada8178e41d18fd15a9b880c) >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 x86_64 cross compiling tool for clang build > # apt-get install binutils-x86-64-linux-gnu > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 > >If you fix the issue, kindly add following tag as appropriate >Reported-by: kernel test robot <lkp@xxxxxxxxx> > Sorry, I don't follow up with this error report. It looks like a build error, while I just removes some check and the build pass from my side. Confused with this error report. >All warnings (new ones prefixed by >>): > > include/linux/signal.h:137:2: note: expanded from macro '_SIG_SET_BINOP' > case 1: ^ > include/linux/signal.h:177:1: warning: unannotated fall-through between switch labels > _SIG_SET_OP(signotset, _sig_not) > ^ > include/linux/signal.h:167:2: note: expanded from macro '_SIG_SET_OP' > case 2: = ^ > include/linux/signal.h:177:1: warning: unannotated fall-through between switch labels > include/linux/signal.h:169:2: note: expanded from macro '_SIG_SET_OP' > case 1: = ^ > include/linux/signal.h:190:2: warning: unannotated fall-through between switch labels > case 1: = 0; > ^ > include/linux/jhash.h:95:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 6: b += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > __attribute__((fallthrough)); > include/linux/jhash.h:95:2: note: insert 'break;' to avoid fall-through > case 6: b += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > break; > include/linux/jhash.h:96:2: warning: unannotated fall-through between switch labels > case 5: b += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > 15include/linux/signal.h:190:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 1: = 0; > ^ > __attribute__((fallthrough)); > include/linux/signal.h:190:2: note: insert 'break;' to avoid fall-through > case 1: = 0; > ^ > break; > include/linux/signal.h:203:2: warninginclude/linux/jhash.h:96:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 5: b += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > __attribute__((fallthrough)); > include/linux/jhash.h:96:2: note: insert 'break;' to avoid fall-through > case 5: b += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > break; > include/linux/jhash.h:97:2: warning: unannotated fall-through between switch labels > case 4: a += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > : unannotated fall-through between switch labels > case 1: = -1; > ^ > warnings generated. > include/linux/signal.h:203:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 1: = -1; > ^ > __attribute__((fallthrough)); > include/linux/signal.h:15203:2: note: insert 'break;' to avoid fall-through > case 1: = -1; > ^ > break; > include/linux/jhash.h:97:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 4: a += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > __attribute__((fallthrough)); > include/linux/jhash.h:97:2: note: insert 'break;' to avoid fall-through > case 4: a += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > break; > include/linux/jhash.h:98:2: warning: unannotated fall-through between switch labels > case 3: a += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > include/linux/signal.h:233:2: warning: unannotated fall-through between switch labels > case 1: ; > ^ > warnings generated. > In file included from kernel/printk/printk.c:61: > kernel/printk/internal.h:54:20: warninginclude/linux/jhash.h:98:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 3: a += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > __attribute__((fallthrough)); > include/linux/jhash.h:98:2: note: no previous prototype for function 'vprintk_func' > __printf(1, 0) int vprintk_func(const char va_list args) { return 0; } > ^ > kernel/printk/internal.h: insert 'break;' to avoid fall-through > case 3: a += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > break; > include/linux/jhash.h:99:2: warning: unannotated fall-through between switch labels > case 2: a += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > :54:16: note: declare 'static' if the function is not intended to be used outside of this translation unit > __printf(1, 0) int vprintk_func(const char va_list args) { return 0; } > ^ > static > kernel/printk/printk.cinclude/linux/signal.h:233:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 1: ; > ^ > __attribute__((fallthrough)); > include/linux/signal.h:233:2: note: insert 'break;' to avoid fall-through > case 1: ; > ^ > break; > include/linux/signal.h:245:2: warning: unannotated fall-through between switch labels > case 1: ; > ^ >>> :165:5: warning: no previous prototype for function 'devkmsg_sysctl_set_loglvl' > int devkmsg_sysctl_set_loglvl(struct ctl_table int write, > ^ > kernel/printk/printk.c:165:1: note: declare 'static' if the function is not intended to be used outside of this translation unit > int devkmsg_sysctl_set_loglvl(struct ctl_table int write, > ^ > static > include/linux/jhash.h:99:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 2: a += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > __attribute__((fallthrough)); > include/linux/jhash.h:99:2: note: insert 'break;' to avoid fall-through > case 2: a += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > break; > include/linux/jhash.h:100:2: warning: unannotated fall-through between switch labels > case 1: a += > ^ > include/linux/signal.h:245:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 1: ; > ^ > __attribute__((fallthrough)); > include/linux/signal.h:245:2: note: insert 'break;' to avoid fall-through > case 1: ; > ^ > break; > kernel/printk/printk.cinclude/linux/jhash.h:100:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 1: a += > ^ > __attribute__((fallthrough)); > include/linux/jhash.h:100:2: note: insert 'break;' to avoid fall-through > case 1: a += > ^ > break; > include/linux/jhash.h:102:2: warning: unannotated fall-through between switch labels > case 0: /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var Nothing left to add arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > include/linux/jhash.h:102:2: note: insert 'break;' to avoid fall-through > case 0: /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var Nothing left to add arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > break; > :2406:10: warning: 'sprintf' will always overflow; destination buffer has size 0, but format string expands to at least 33 > len = sprintf(text, > ^ > include/linux/jhash.h:136:2: warning: unannotated fall-through between switch labels > case 2: b += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > include/linux/jhash.h:136:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 2: b += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > __attribute__((fallthrough)); > include/linux/jhash.h:136:2: note: insert 'break;' to avoid fall-through > case 2: b += /Dockerfile /Gemfile /Gemfile.lock /bin /boot /c /cephfs /dev /etc /home /htmldocs /include /kbuild /lib /lib32 /lib64 /libx32 /lkp-cloud /lkp-src /media /mnt /opt /patch /pkg /proc /root /run /sbin /share /srv /sys /tmp /usr /var fall through arch/ block/ certs/ crypto/ drivers/ fs/ include/ init/ ipc/ kernel/ lib/ mm/ net/ scripts/ security/ sound/ source/ tools/ usr/ virt/ > ^ > break; > include/linux/jhash.h:137:2: warning: unannotated fall-through between switch labels > case 1: a += > ^ > In file included from kernel/capability.c:13: > In file included from include/linux/audit.h:13: > In file included from include/linux/ptrace.h:7: > In file included from include/linux/sched/signal.h:6: > include/linux/signal.h:147:1: warning: unannotated fall-through between switch labels > _SIG_SET_BINOP(sigorsets, _sig_or) > ^ > include/linux/signal.h:133:2: note: expanded from macro '_SIG_SET_BINOP' > case 2: ^ > include/linux/signal.h:147:1: warning: unannotated fall-through between switch labels > include/linux/signal.h:137:2: note: expanded from macro '_SIG_SET_BINOP' > case 1: ^ > include/linux/signal.h:150:1: warning: unannotated fall-through between switch labels > _SIG_SET_BINOP(sigandsets, _sig_and) > ^ > include/linux/signal.h:133:2:In file included from note: expanded from macro '_SIG_SET_BINOP' > case 2: ^ > include/linux/signal.h:150:1: warning: unannotated fall-through between switch labels > include/linux/signal.h:137:2: note: expanded from macro '_SIG_SET_BINOP' > case 1: ^ > include/linux/signal.h:153:1: warning: unannotated fall-through between switch labels > _SIG_SET_BINOP(sigandnsets, _sig_andn) > ^ > include/linux/signal.h:133:2: note: expanded from macro '_SIG_SET_BINOP' > case 2: kernel/sysctl_binary.c:15: > In file included from include/linux/netdevice.h:37: > In file included from include/linux/ethtool.h:18: > In file included from include/uapi/linux/ethtool.h:19: > In file included from include/linux/if_ether.h:19: > include/linux/skbuff.h:3690:2: warning: unannotated fall-through between switch labels > case 24: diffs |= __it_diff(a, b, 64); > ^ >-- > ^ > __attribute__((fallthrough)); > include/linux/mm.h:166:2: note: insert 'break;' to avoid fall-through > case 56: > ^ > break; > In file included from kernel/printk/printk.c:36: > In file included from include/linux/syscalls.h:76: > include/linux/signal.h:147:1: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > _SIG_SET_BINOP(sigorsets, _sig_or) > ^ > include/linux/signal.h:133:2: note: expanded from macro '_SIG_SET_BINOP' > case 2: \ > ^ > include/linux/signal.h:147:1: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > include/linux/signal.h:137:2: note: expanded from macro '_SIG_SET_BINOP' > case 1: \ > ^ > include/linux/signal.h:150:1: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > _SIG_SET_BINOP(sigandsets, _sig_and) > ^ > include/linux/signal.h:133:2: note: expanded from macro '_SIG_SET_BINOP' > case 2: \ > ^ > include/linux/signal.h:150:1: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > include/linux/signal.h:137:2: note: expanded from macro '_SIG_SET_BINOP' > case 1: \ > ^ > include/linux/signal.h:153:1: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > _SIG_SET_BINOP(sigandnsets, _sig_andn) > ^ > include/linux/signal.h:133:2: note: expanded from macro '_SIG_SET_BINOP' > case 2: \ > ^ > include/linux/signal.h:153:1: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > include/linux/signal.h:137:2: note: expanded from macro '_SIG_SET_BINOP' > case 1: \ > ^ > include/linux/signal.h:177:1: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > _SIG_SET_OP(signotset, _sig_not) > ^ > include/linux/signal.h:167:2: note: expanded from macro '_SIG_SET_OP' > case 2: set->sig[1] = op(set->sig[1]); \ > ^ > include/linux/signal.h:177:1: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > include/linux/signal.h:169:2: note: expanded from macro '_SIG_SET_OP' > case 1: set->sig[0] = op(set->sig[0]); \ > ^ > include/linux/signal.h:190:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > case 1: set->sig[0] = 0; > ^ > include/linux/signal.h:190:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 1: set->sig[0] = 0; > ^ > __attribute__((fallthrough)); > include/linux/signal.h:190:2: note: insert 'break;' to avoid fall-through > case 1: set->sig[0] = 0; > ^ > break; > include/linux/signal.h:203:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > case 1: set->sig[0] = -1; > ^ > include/linux/signal.h:203:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 1: set->sig[0] = -1; > ^ > __attribute__((fallthrough)); > include/linux/signal.h:203:2: note: insert 'break;' to avoid fall-through > case 1: set->sig[0] = -1; > ^ > break; > include/linux/signal.h:233:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > case 1: ; > ^ > include/linux/signal.h:233:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 1: ; > ^ > __attribute__((fallthrough)); > include/linux/signal.h:233:2: note: insert 'break;' to avoid fall-through > case 1: ; > ^ > break; > include/linux/signal.h:245:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] > case 1: ; > ^ > include/linux/signal.h:245:2: note: insert '__attribute__((fallthrough));' to silence this warning > case 1: ; > ^ > __attribute__((fallthrough)); > include/linux/signal.h:245:2: note: insert 'break;' to avoid fall-through > case 1: ; > ^ > break; > In file included from kernel/printk/printk.c:61: > kernel/printk/internal.h:54:20: warning: no previous prototype for function 'vprintk_func' [-Wmissing-prototypes] > __printf(1, 0) int vprintk_func(const char *fmt, va_list args) { return 0; } > ^ > kernel/printk/internal.h:54:16: note: declare 'static' if the function is not intended to be used outside of this translation unit > __printf(1, 0) int vprintk_func(const char *fmt, va_list args) { return 0; } > ^ > static >>> kernel/printk/printk.c:165:5: warning: no previous prototype for function 'devkmsg_sysctl_set_loglvl' [-Wmissing-prototypes] > int devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, > ^ > kernel/printk/printk.c:165:1: note: declare 'static' if the function is not intended to be used outside of this translation unit > int devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, > ^ > static > kernel/printk/printk.c:2406:10: warning: 'sprintf' will always overflow; destination buffer has size 0, but format string expands to at least 33 [-Wfortify-source] > len = sprintf(text, > ^ > 18 warnings generated. > >--- >0-DAY CI Kernel Test Service, Intel Corporation >https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx -- Wei Yang Help you, Help me
