Re: [PATCH] mm/sparse: only sub-section aligned range would be populated
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kernel test robot
Jun 30, 2020, 2:11:41 PM6/30/20
to Wei Yang, dan.j.w...@intel.com, ak...@linux-foundation.org, kbuil...@lists.01.org, clang-bu...@googlegroups.com, linu...@kvack.org, linux-...@vger.kernel.org, Wei Yang
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 <l...@intel.com>
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/kbuil...@lists.01.org
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 <l...@intel.com>
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/kbuil...@lists.01.org
Wei Yang
Jul 1, 2020, 7:58:48 AM7/1/20
to kernel test robot, Wei Yang, dan.j.w...@intel.com, ak...@linux-foundation.org, kbuil...@lists.01.org, clang-bu...@googlegroups.com, linu...@kvack.org, linux-...@vger.kernel.org
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=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
>
>If you fix the issue, kindly add following tag as appropriate
>Reported-by: kernel test robot <l...@intel.com>
>
Sorry, I don't follow up with this error report.
>Hi Wei,
>
>Thank you for the patch! Perhaps something to improve:
>
>[auto build test WARNING on mmotm/master]
>
>url: https://github.com/0day-ci/linux/commits/Wei-Yang/mm-sparse-only-sub-section-aligned-range-would-be-populated/20200630-101713
>base: git://git.cmpxchg.org/linux-mmotm.git master
>config: x86_64-allnoconfig (attached as .config)
>compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project cf1d04484344be52ada8178e41d18fd15a9b880c)
>reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install x86_64 cross compiling tool for clang build
> # apt-get install binutils-x86-64-linux-gnu
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$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 <l...@intel.com>
>
It looks like a build error, while I just removes some check and the build
pass from my side. Confused with this error report.
Wei Yang
Help you, Help me
Xia, Hui
Jul 8, 2020, 3:23:33 AM7/8/20
to Wei Yang, lkp, Williams, Dan J, ak...@linux-foundation.org, kbuil...@lists.01.org, clang-bu...@googlegroups.com, linu...@kvack.org, linux-...@vger.kernel.org
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.
Nick Desaulniers
Jul 8, 2020, 2:20:49 PM7/8/20
to Xia, Hui, Wei Yang, Philip Li, Arnd Bergmann, lkp, Williams, Dan J, ak...@linux-foundation.org, kbuil...@lists.01.org, clang-bu...@googlegroups.com, linu...@kvack.org, linux-...@vger.kernel.org
On Wed, Jul 8, 2020 at 12:23 AM Xia, Hui <hui...@intel.com> wrote:
>
>
>
> >-----Original Message-----
> >From: Wei Yang <richard...@linux.alibaba.com>
> >Sent: 2020年7月1日 19:58
> >To: lkp <l...@intel.com>
> >Cc: Wei Yang <richard...@linux.alibaba.com>; Williams, Dan J
> ><dan.j.w...@intel.com>; ak...@linux-foundation.org; kbuil...@lists.01.org;
> >clang-bu...@googlegroups.com; linu...@kvack.org; linux-
> >ker...@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)
Another issue was that this was an allnoconfig x86_64 build with
>
>
>
> >-----Original Message-----
> >From: Wei Yang <richard...@linux.alibaba.com>
> >Sent: 2020年7月1日 19:58
> >To: lkp <l...@intel.com>
> >Cc: Wei Yang <richard...@linux.alibaba.com>; Williams, Dan J
> ><dan.j.w...@intel.com>; ak...@linux-foundation.org; kbuil...@lists.01.org;
> >clang-bu...@googlegroups.com; linu...@kvack.org; linux-
> >ker...@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)
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?
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--
Thanks,
~Nick Desaulniers
Philip Li
Jul 8, 2020, 8:20:20 PM7/8/20
to Nick Desaulniers, Xia, Hui, Wei Yang, Arnd Bergmann, lkp, Williams, Dan J, ak...@linux-foundation.org, kbuil...@lists.01.org, clang-bu...@googlegroups.com, linu...@kvack.org, linux-...@vger.kernel.org
> 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?
to know what is currently disabled. Currently we may not know when
it can be opened, thus we check the ClangBuiltLinux sometimes to see
progress of interested issues.
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