tree: https://github.com/zen-kernel/zen-kernel 5.13/futex2 head: db649ce1f5de12432be5bfedd8388eacc2f85efc commit: 109091dbebdb22d9c1f926e501dad6a7377e5296 [13/19] selftests: futex2: Add futex sizes test config: x86_64-rhel-8.3-kselftests (attached as .config) compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/zen-kernel/zen-kernel/commit/109091dbebdb22d9c1f926e50... git remote add zen-kernel-zen-kernel https://github.com/zen-kernel/zen-kernel git fetch --no-tags zen-kernel-zen-kernel 5.13/futex2 git checkout 109091dbebdb22d9c1f926e501dad6a7377e5296 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash -C tools/testing/selftests install 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 >>): futex2_sizes.c: In function 'waiterfn': 65 | if (ret == ERROR) | ^~ In file included from futex2_sizes.c:27: 135 | fprintf(stderr, "\t%s: %s: "message, \ | ^~~~~~~~~~~~ futex2_sizes.c:66:3: note: in expansion of macro 'error' 66 | error("waiter failed %d errno %d\n", ret, errno); | ^~~~~ ../include/logging.h:138:20: warning: format '%d' expects a matching 'int' argument [-Wformat=] 138 | fprintf(stderr, "\t%s: "message, ERROR, ##args); \ | ^~~~~~~~ futex2_sizes.c:66:3: note: in expansion of macro 'error' 66 | error("waiter failed %d errno %d\n", ret, errno); | ^~~~~ futex2_sizes.c: In function 'main': futex2_sizes.c:98:12: warning: unused variable 'waiter' [-Wunused-variable] 98 | pthread_t waiter; | ^~~~~~ futex2_sizes.c:97:12: warning: unused variable 'f_private' [-Wunused-variable] 97 | u_int32_t f_private = 0; | ^~~~~~~~~ futex2_sizes.c:96:34: warning: unused variable 'shm_id' [-Wunused-variable] 96 | int res, ret = RET_PASS, fd, c, shm_id; | ^~~~~~ futex2_sizes.c:96:27: warning: unused variable 'fd' [-Wunused-variable] 96 | int res, ret = RET_PASS, fd, c, shm_id; | ^~ futex2_sizes.c:96:6: warning: unused variable 'res' [-Wunused-variable] 96 | int res, ret = RET_PASS, fd, c, shm_id; | ^~~ --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org