tree: https://android.googlesource.com/kernel/common android12-5.10 head: cf236c272d7f78ea744808012e3689489facfcbc commit: e7be908f88dbde1df94db83d6c7a23b117de0f36 [1/2] ANDROID: staging: add debug-kinfo driver config: i386-randconfig-s032-20210607 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty git remote add android-common https://android.googlesource.com/kernel/common git fetch --no-tags android-common android12-5.10 git checkout e7be908f88dbde1df94db83d6c7a23b117de0f36 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=i386 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 >>) vim +64 drivers/staging/android/debug_kinfo.c 57 58 static int build_info_set(const char *str, const struct kernel_param *kp) 59 { 60 struct kernel_all_info *all_info; 61 size_t build_info_size; 62 int ret = 0; 63 65 ret = -EPERM; 66 goto Exit; 67 } 68 69 all_info = (struct kernel_all_info *)all_info_addr; 70 build_info_size = sizeof(all_info->info.build_info); 71 72 memcpy(&all_info->info.build_info, str, min(build_info_size - 1, strlen(str))); 73 update_kernel_all_info(all_info); 74 75 if (strlen(str) > build_info_size) { 76 pr_warn("%s: Build info buffer (len: %zd) can't hold entire string '%s'\n", 77 __func__, build_info_size, str); 78 ret = -ENOMEM; 79 } 80 81 Exit: 82 vunmap(all_info_addr); 83 return ret; 84 } 85 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org