[kbuild-all] Re: [PATCH] mm/sparse: only sub-section aligned range would be populated

>-----Original Message----- >From: Wei Yang <richard.weiyang(a)linux.alibaba.com&gt; >Sent: 2020年7月1日 19:58 >To: lkp <lkp(a)intel.com&gt; >Cc: Wei Yang <richard.weiyang(a)linux.alibaba.com&gt;; Williams, Dan J &gt;&lt;dan.j.williams(a)intel.com&gt;; akpm(a)linux-foundation.org; kbuild-all(a)lists.01.org; &gt;clang-built-linux(a)googlegroups.com; linux-mm(a)kvack.org; linux- &gt;kernel(a)vger.kernel.org >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)

>>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(a)intel.com&gt; >> > >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@lists.01.org > > > >-- >Wei Yang >Help you, Help me -- You received this message because you are subscribed to the Google Groups "Clang Built Linux" group. 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