[kbuild-all] include/linux/atomic/atomic-instrumented.h:476:16: sparse: sparse: cast truncates bits from constant value (ffffffffaaa31337 becomes 37)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4c388a8e740d3235a194f330c8ef327deef710f6 commit: e3d18cee258b898017b298b5b93f8134dd62aee3 locking/atomic: centralize generated headers date: 4 months ago config: ia64-randconfig-s032-20211025 (attached as .config) compiler: ia64-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e3d18cee258b898017b298b5b93f8134dd62aee3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=ia64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) lib/atomic64_test.c: note: in included file (through include/linux/atomic.h): include/linux/atomic/atomic-instrumented.h:476:16: sparse: sparse: cast truncates bits from constant value (ffffffffaaa31337 becomes 1337) include/linux/atomic/atomic-instrumented.h:483:16: sparse: sparse: cast truncates bits from constant value (ffffffffaaa31337 becomes 37) include/linux/atomic/atomic-instrumented.h:483:16: sparse: sparse: cast truncates bits from constant value (ffffffffaaa31337 becomes 1337) include/linux/atomic/atomic-instrumented.h:490:16: sparse: sparse: cast truncates bits from constant value (ffffffffaaa31337 becomes 37) include/linux/atomic/atomic-instrumented.h:490:16: sparse: sparse: cast truncates bits from constant value (ffffffffaaa31337 becomes 1337) include/linux/atomic/atomic-instrumented.h:497:16: sparse: sparse: cast truncates bits from constant value (ffffffffaaa31337 becomes 37) include/linux/atomic/atomic-instrumented.h:497:16: sparse: sparse: cast truncates bits from constant value (ffffffffaaa31337 becomes 1337) include/linux/atomic/atomic-instrumented.h:476:16: sparse: sparse: cast truncates bits from constant value (11112222 becomes 2222) include/linux/atomic/atomic-instrumented.h:483:16: sparse: sparse: cast truncates bits from constant value (11112222 becomes 22) include/linux/atomic/atomic-instrumented.h:483:16: sparse: sparse: cast truncates bits from constant value (11112222 becomes 2222) include/linux/atomic/atomic-instrumented.h:490:16: sparse: sparse: cast truncates bits from constant value (11112222 becomes 22) include/linux/atomic/atomic-instrumented.h:490:16: sparse: sparse: cast truncates bits from constant value (11112222 becomes 2222) include/linux/atomic/atomic-instrumented.h:497:16: sparse: sparse: cast truncates bits from constant value (11112222 becomes 22) include/linux/atomic/atomic-instrumented.h:497:16: sparse: sparse: cast truncates bits from constant value (11112222 becomes 2222) include/linux/atomic/atomic-instrumented.h:1061:16: sparse: sparse: cast truncates bits from constant value (aaa31337c001d00d becomes d) include/linux/atomic/atomic-instrumented.h:1061:16: sparse: sparse: cast truncates bits from constant value (aaa31337c001d00d becomes d00d) include/linux/atomic/atomic-instrumented.h:1061:16: sparse: sparse: cast truncates bits from constant value (aaa31337c001d00d becomes c001d00d) include/linux/atomic/atomic-instrumented.h:1068:16: sparse: sparse: cast truncates bits from constant value (aaa31337c001d00d becomes d) include/linux/atomic/atomic-instrumented.h:1068:16: sparse: sparse: cast truncates bits from constant value (aaa31337c001d00d becomes d00d) include/linux/atomic/atomic-instrumented.h:1068:16: sparse: sparse: cast truncates bits from constant value (aaa31337c001d00d becomes c001d00d) include/linux/atomic/atomic-instrumented.h:1075:16: sparse: sparse: cast truncates bits from constant value (aaa31337c001d00d becomes d) include/linux/atomic/atomic-instrumented.h:1075:16: sparse: sparse: cast truncates bits from constant value (aaa31337c001d00d becomes d00d) include/linux/atomic/atomic-instrumented.h:1075:16: sparse: sparse: cast truncates bits from constant value (aaa31337c001d00d becomes c001d00d) include/linux/atomic/atomic-instrumented.h:1061:16: sparse: sparse: cast truncates bits from constant value (faceabadf00df001 becomes 1) include/linux/atomic/atomic-instrumented.h:1061:16: sparse: sparse: cast truncates bits from constant value (faceabadf00df001 becomes f001) include/linux/atomic/atomic-instrumented.h:1061:16: sparse: sparse: cast truncates bits from constant value (faceabadf00df001 becomes f00df001) include/linux/atomic/atomic-instrumented.h:1068:16: sparse: sparse: cast truncates bits from constant value (faceabadf00df001 becomes 1) include/linux/atomic/atomic-instrumented.h:1068:16: sparse: sparse: cast truncates bits from constant value (faceabadf00df001 becomes f001) include/linux/atomic/atomic-instrumented.h:1068:16: sparse: sparse: cast truncates bits from constant value (faceabadf00df001 becomes f00df001) include/linux/atomic/atomic-instrumented.h:1075:16: sparse: sparse: cast truncates bits from constant value (faceabadf00df001 becomes 1) include/linux/atomic/atomic-instrumented.h:1075:16: sparse: sparse: cast truncates bits from constant value (faceabadf00df001 becomes f001) include/linux/atomic/atomic-instrumented.h:1075:16: sparse: sparse: cast truncates bits from constant value (faceabadf00df001 becomes f00df001) vim +476 include/linux/atomic/atomic-instrumented.h aa525d063851a9 include/asm-generic/atomic-instrumented.h Mark Rutland 2018-09-04 471 c020395b6634b7 include/asm-generic/atomic-instrumented.h Marco Elver 2019-11-26 472 static __always_inline int aa525d063851a9 include/asm-generic/atomic-instrumented.h Mark Rutland 2018-09-04 473 atomic_cmpxchg(atomic_t *v, int old, int new) aa525d063851a9 include/asm-generic/atomic-instrumented.h Mark Rutland 2018-09-04 474 { 3570a1bcf45e9a include/asm-generic/atomic-instrumented.h Marco Elver 2020-07-24 475 instrument_atomic_read_write(v, sizeof(*v)); aa525d063851a9 include/asm-generic/atomic-instrumented.h Mark Rutland 2018-09-04 @476 return arch_atomic_cmpxchg(v, old, new); aa525d063851a9 include/asm-generic/atomic-instrumented.h Mark Rutland 2018-09-04 477 } aa525d063851a9 include/asm-generic/atomic-instrumented.h Mark Rutland 2018-09-04 478 :::::: The code at line 476 was first introduced by commit :::::: aa525d063851a98e020b827fdd1d7776ae652301 locking/atomics: Switch to generated instrumentation :::::: TO: Mark Rutland <mark.rutland(a)arm.com&gt; :::::: CC: Ingo Molnar <mingo(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org