On Wed, Jul 8, 2020 at 12:23 AM Xia, Hui <hui.xia@xxxxxxxxx> wrote: > > > > >-----Original Message----- > >From: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx> > >Sent: 2020年7月1日 19:58 > >To: lkp <lkp@xxxxxxxxx> > >Cc: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>; Williams, Dan J > ><dan.j.williams@xxxxxxxxx>; akpm@xxxxxxxxxxxxxxxxxxxx; kbuild-all@xxxxxxxxxxxx; > >clang-built-linux@xxxxxxxxxxxxxxxx; linux-mm@xxxxxxxxx; linux- > >kernel@xxxxxxxxxxxxxxx > >Subject: Re: [PATCH] mm/sparse: only sub-section aligned range would be > >populated > > > >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) Another issue was that this was an allnoconfig x86_64 build with Clang. While ARCH=x86_64 defconfigs set: CONFIG_64BIT=y CONFIG_X86_64=y allnoconfig turns those off, making it a 32b x86 build. We cannot yet build an ARCH=i386 build yet with Clang, so that means this target is not green to begin with. + Arnd There might be a way for us to disable maybe CONFIG_X86_32 when building with Clang? or make it so that randconfig can't dig this up? +Philip I'm not sure if it's easy to disable `allnoconfig` x86 builds with Clang? Also, I feel like we're asking for a bunch of special cases while we work through all the issues. We would like to revert these special cases once we're in better shape. Are you tracking a list of exceptions, so that we can estimate the work to fix on our side, and that we know to re-enable test coverage once fixed? > >>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. > It is false positive. Please ignore. Sorry for inconvenience. > The report complains about " warning: no previous prototype for function 'devkmsg_sysctl_set_loglvl'" which is not caused by commit in this report. We will investigate and fix in 0-day side. > > > > >>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 > > -- > You received this message because you are subscribed to the Google Groups "Clang Built Linux" group. > To unsubscribe from this group and stop receiving emails from it, send an email to clang-built-linux+unsubscribe@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit https://groups.google.com/d/msgid/clang-built-linux/MN2PR11MB4064B0104312A3D22F1698F3E5670%40MN2PR11MB4064.namprd11.prod.outlook.com. -- Thanks, ~Nick Desaulniers
