[kbuild-all] [sashal-linux-stable:queue-4.4 19/39] /tmp/extent_io-050124.s:27996: Warning: no instruction mnemonic suffix given and no register operands; using default for `btr'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-4.4 head: 27906e76d6f6e08df0aad4c890642688db24de49 commit: ef8bba364266ec33027a88e9f756913d3f8f45b8 [19/39] net: lan78xx: fix transfer-buffer memory leak config: x86_64-randconfig-a002-20200807 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project aa57cabae2fc5abc08ab3e17b45f2890fc7c9e42) 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 git checkout ef8bba364266ec33027a88e9f756913d3f8f45b8 # 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; All warnings (new ones prefixed by >>): In file included from include/linux/cgroup-defs.h:16: include/linux/percpu-refcount.h:177:3: warning: comparison of integers of different signs: 'unsigned long' and 'int' [-Wsign-compare] this_cpu_add(*percpu_count, nr); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:526:33: note: expanded from macro 'this_cpu_add' #define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:397:11: note: expanded from macro '__pcpu_size_call' case 8: stem##8(variable, __VA_ARGS__);break; \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <scratch space>:291:1: note: expanded from here this_cpu_add_8 ^ arch/x86/include/asm/percpu.h:478:35: note: expanded from macro 'this_cpu_add_8' #define this_cpu_add_8(pcp, val) percpu_add_op((pcp), val) ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/percpu.h:130:31: note: expanded from macro 'percpu_add_op' ((val) == 1 || (val) == -1)) ? \ ~~~ ^ ~~ In file included from fs/btrfs/extent_io.c:3: In file included from include/linux/bio.h:23: In file included from include/linux/highmem.h:8: In file included from include/linux/uaccess.h:4: In file included from include/linux/sched.h:61: In file included from include/linux/cgroup-defs.h:16: include/linux/percpu-refcount.h:276:3: warning: comparison of integers of different signs: 'unsigned long' and 'int' [-Wsign-compare] this_cpu_sub(*percpu_count, nr); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:536:33: note: expanded from macro 'this_cpu_sub' #define this_cpu_sub(pcp, val) this_cpu_add(pcp, -(typeof(pcp))(val)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:526:33: note: expanded from macro 'this_cpu_add' #define this_cpu_add(pcp, val) __pcpu_size_call(this_cpu_add_, pcp, val) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:397:11: note: expanded from macro '__pcpu_size_call' case 8: stem##8(variable, __VA_ARGS__);break; \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <scratch space>:451:1: note: expanded from here this_cpu_add_8 ^ arch/x86/include/asm/percpu.h:478:35: note: expanded from macro 'this_cpu_add_8' #define this_cpu_add_8(pcp, val) percpu_add_op((pcp), val) ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/percpu.h:130:31: note: expanded from macro 'percpu_add_op' ((val) == 1 || (val) == -1)) ? \ ~~~ ^ ~~ In file included from fs/btrfs/extent_io.c:3: In file included from include/linux/bio.h:23: In file included from include/linux/highmem.h:8: In file included from include/linux/uaccess.h:8: arch/x86/include/asm/uaccess.h:754:26: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] if (likely(sz < 0 || sz >= n)) ~~ ^ ~ include/linux/compiler.h:181:40: note: expanded from macro 'likely' # define likely(x) __builtin_expect(!!(x), 1) ^ In file included from fs/btrfs/extent_io.c:3: In file included from include/linux/bio.h:23: In file included from include/linux/highmem.h:8: In file included from include/linux/uaccess.h:8: arch/x86/include/asm/uaccess.h:772:26: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] if (likely(sz < 0 || sz >= n)) ~~ ^ ~ include/linux/compiler.h:181:40: note: expanded from macro 'likely' # define likely(x) __builtin_expect(!!(x), 1) ^ In file included from fs/btrfs/extent_io.c:3: include/linux/bio.h:424:14: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare] if (sectors >= bio_sectors(bio)) ~~~~~~~ ^ ~~~~~~~~~~~~~~~~ In file included from fs/btrfs/extent_io.c:16: fs/btrfs/ctree.h:3717:18: warning: comparison of integers of different signs: 'int' and 'u32' (aka 'unsigned int') [-Wsign-compare] if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) ~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/btrfs/extent_io.c:2877:50: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned long') [-Wsign-compare] bio_add_page(bio, page, page_size, offset) < page_size) { ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~ fs/btrfs/extent_io.c:3392:23: warning: comparison of integers of different signs: 'long' and 'u64' (aka 'unsigned long long') [-Wsign-compare] if (wbc->nr_to_write < delalloc_to_write) { ~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~ fs/btrfs/extent_io.c:3395:25: warning: comparison of integers of different signs: 'u64' (aka 'unsigned long long') and 'int' [-Wsign-compare] if (delalloc_to_write < thresh * 2) ~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~ fs/btrfs/extent_io.c:3478:13: warning: comparison of integers of different signs: 'loff_t' (aka 'long long') and 'u64' (aka 'unsigned long long') [-Wsign-compare] if (i_size <= start) { ~~~~~~ ^ ~~~~~ fs/btrfs/extent_io.c:3489:11: warning: comparison of integers of different signs: 'u64' (aka 'unsigned long long') and 'loff_t' (aka 'long long') [-Wsign-compare] if (cur >= i_size) { ~~~ ^ ~~~~~~ fs/btrfs/extent_io.c:3959:17: warning: comparison of integers of different signs: 'unsigned int' and 'int' [-Wsign-compare] for (i = 0; i < nr_pages; i++) { ~ ^ ~~~~~~~~ fs/btrfs/extent_io.c:4103:17: warning: comparison of integers of different signs: 'unsigned int' and 'int' [-Wsign-compare] for (i = 0; i < nr_pages; i++) { ~ ^ ~~~~~~~~ fs/btrfs/extent_io.c:4314:10: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] if (nr < ARRAY_SIZE(pagepool)) ~~ ^ ~~~~~~~~~~~~~~~~~~~~ 14 warnings generated. /tmp/extent_io-050124.s: Assembler messages: /tmp/extent_io-050124.s:28292: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:28550: Warning: no instruction mnemonic suffix given and no register operands; using default for `btr' /tmp/extent_io-050124.s:29119: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:32015: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:32422: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:38532: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:39574: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:40095: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:40347: Warning: no instruction mnemonic suffix given and no register operands; using default for `btr' /tmp/extent_io-050124.s:40561: Warning: no instruction mnemonic suffix given and no register operands; using default for `btr' /tmp/extent_io-050124.s:40769: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:41041: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:41088: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:41764: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:41817: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:42243: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:45739: Warning: no instruction mnemonic suffix given and no register operands; using default for `btr' /tmp/extent_io-050124.s:49622: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/extent_io-050124.s:53789: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org