tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.4 head: 877b088a3eb47ffa001089d703784629d97b4e72 commit: dee8dc25486a6fe7c54614090e359ab5a611e4be [29993/30000] CHROMIUM: Merge 'v4.4.242' into chromeos-4.4 config: x86_64-randconfig-a005-20201113 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 9a85643cd357e412cff69067bb5c4840e228c2ab) 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 remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-4.4 git checkout dee8dc25486a6fe7c54614090e359ab5a611e4be # 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 >>): #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 drivers/dma-buf/dma-fence.c:27: In file included from include/trace/events/dma_fence.h:128: In file included from include/trace/define_trace.h:90: In file included from include/trace/trace_events.h:19: In file included from include/linux/trace_events.h:5: In file included from include/linux/ring_buffer.h:7: In file included from include/linux/poll.h:11: 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:150:73: note: expanded from macro 'likely' # define likely(x) (__builtin_constant_p(x) ? !!(x) : __branch_check__(x, 1)) ^ include/linux/compiler.h:139:29: note: expanded from macro '__branch_check__' ______r = likely_notrace(x); \ ^ include/linux/compiler.h:126:47: note: expanded from macro 'likely_notrace' #define likely_notrace(x) __builtin_expect(!!(x), 1) ^ In file included from drivers/dma-buf/dma-fence.c:27: In file included from include/trace/events/dma_fence.h:128: In file included from include/trace/define_trace.h:90: In file included from include/trace/trace_events.h:19: In file included from include/linux/trace_events.h:5: In file included from include/linux/ring_buffer.h:7: In file included from include/linux/poll.h:11: 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:150:43: note: expanded from macro 'likely' # define likely(x) (__builtin_constant_p(x) ? !!(x) : __branch_check__(x, 1)) ^ In file included from drivers/dma-buf/dma-fence.c:27: In file included from include/trace/events/dma_fence.h:128: In file included from include/trace/define_trace.h:90: In file included from include/trace/trace_events.h:19: In file included from include/linux/trace_events.h:5: In file included from include/linux/ring_buffer.h:7: In file included from include/linux/poll.h:11: 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:150:51: note: expanded from macro 'likely' # define likely(x) (__builtin_constant_p(x) ? !!(x) : __branch_check__(x, 1)) ^ In file included from drivers/dma-buf/dma-fence.c:27: In file included from include/trace/events/dma_fence.h:128: In file included from include/trace/define_trace.h:90: In file included from include/trace/trace_events.h:19: In file included from include/linux/trace_events.h:5: In file included from include/linux/ring_buffer.h:7: In file included from include/linux/poll.h:11: arch/x86/include/asm/uaccess.h:773:26: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] if (likely(sz < 0 || sz >= n)) { ~~ ^ ~ include/linux/compiler.h:150:73: note: expanded from macro 'likely' # define likely(x) (__builtin_constant_p(x) ? !!(x) : __branch_check__(x, 1)) ^ include/linux/compiler.h:139:29: note: expanded from macro '__branch_check__' ______r = likely_notrace(x); \ ^ include/linux/compiler.h:126:47: note: expanded from macro 'likely_notrace' #define likely_notrace(x) __builtin_expect(!!(x), 1) ^ In file included from drivers/dma-buf/dma-fence.c:27: In file included from include/trace/events/dma_fence.h:128: In file included from include/trace/define_trace.h:90: In file included from include/trace/trace_events.h:19: In file included from include/linux/trace_events.h:5: In file included from include/linux/ring_buffer.h:7: In file included from include/linux/poll.h:11: arch/x86/include/asm/uaccess.h:773:26: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] if (likely(sz < 0 || sz >= n)) { ~~ ^ ~ include/linux/compiler.h:150:43: note: expanded from macro 'likely' # define likely(x) (__builtin_constant_p(x) ? !!(x) : __branch_check__(x, 1)) ^ In file included from drivers/dma-buf/dma-fence.c:27: In file included from include/trace/events/dma_fence.h:128: In file included from include/trace/define_trace.h:90: In file included from include/trace/trace_events.h:19: In file included from include/linux/trace_events.h:5: In file included from include/linux/ring_buffer.h:7: In file included from include/linux/poll.h:11: arch/x86/include/asm/uaccess.h:773:26: warning: comparison of integers of different signs: 'int' and 'unsigned long' [-Wsign-compare] if (likely(sz < 0 || sz >= n)) { ~~ ^ ~ include/linux/compiler.h:150:51: note: expanded from macro 'likely' # define likely(x) (__builtin_constant_p(x) ? !!(x) : __branch_check__(x, 1)) ^ drivers/dma-buf/dma-fence.c:438:16: warning: comparison of integers of different signs: 'int' and 'uint32_t' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < count; ++i) { ~ ^ ~~~~~ 9 warnings generated. /tmp/dma-fence-007772.s: Assembler messages: /tmp/dma-fence-007772.s:8190: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/dma-fence-007772.s:10168: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/dma-fence-007772.s:10823: Warning: no instruction mnemonic suffix given and no register operands; using default for `bts' /tmp/dma-fence-007772.s:12383: 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