Hi Elizabeth, kernel test robot noticed the following build errors: [auto build test ERROR on cdd30ebb1b9f36159d66f088b61aee264e649d7a] url: https://github.com/intel-lab-lkp/linux/commits/Elizabeth-Figura/ntsync-Introduce-NTSYNC_IOC_WAIT_ANY/20241210-031155 base: cdd30ebb1b9f36159d66f088b61aee264e649d7a patch link: https://lore.kernel.org/r/20241209185904.507350-29-zfigura%40codeweavers.com patch subject: [PATCH v6 28/28] ntsync: No longer depend on BROKEN. config: i386-randconfig-002-20241212 (https://download.01.org/0day-ci/archive/20241212/202412121219.EQhUbN0S-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241212/202412121219.EQhUbN0S-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202412121219.EQhUbN0S-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from include/linux/spinlock.h:60, from include/linux/wait.h:9, from include/linux/wait_bit.h:8, from include/linux/fs.h:6, from drivers/misc/ntsync.c:11: In function 'check_copy_size', inlined from 'copy_from_user' at include/linux/uaccess.h:207:7, inlined from 'setup_wait' at drivers/misc/ntsync.c:903:6: >> include/linux/thread_info.h:259:25: error: call to '__bad_copy_to' declared with attribute error: copy destination size is too small 259 | __bad_copy_to(); | ^~~~~~~~~~~~~~~ vim +/__bad_copy_to +259 include/linux/thread_info.h b0377fedb652808 Al Viro 2017-06-29 248 9dd819a15162f8f Kees Cook 2019-09-25 249 static __always_inline __must_check bool b0377fedb652808 Al Viro 2017-06-29 250 check_copy_size(const void *addr, size_t bytes, bool is_source) b0377fedb652808 Al Viro 2017-06-29 251 { c80d92fbb67b2c8 Kees Cook 2021-06-17 252 int sz = __builtin_object_size(addr, 0); b0377fedb652808 Al Viro 2017-06-29 253 if (unlikely(sz >= 0 && sz < bytes)) { b0377fedb652808 Al Viro 2017-06-29 254 if (!__builtin_constant_p(bytes)) b0377fedb652808 Al Viro 2017-06-29 255 copy_overflow(sz, bytes); b0377fedb652808 Al Viro 2017-06-29 256 else if (is_source) b0377fedb652808 Al Viro 2017-06-29 257 __bad_copy_from(); b0377fedb652808 Al Viro 2017-06-29 258 else b0377fedb652808 Al Viro 2017-06-29 @259 __bad_copy_to(); b0377fedb652808 Al Viro 2017-06-29 260 return false; b0377fedb652808 Al Viro 2017-06-29 261 } 6d13de1489b6bf5 Kees Cook 2019-12-04 262 if (WARN_ON_ONCE(bytes > INT_MAX)) 6d13de1489b6bf5 Kees Cook 2019-12-04 263 return false; b0377fedb652808 Al Viro 2017-06-29 264 check_object_size(addr, bytes, is_source); b0377fedb652808 Al Viro 2017-06-29 265 return true; b0377fedb652808 Al Viro 2017-06-29 266 } b0377fedb652808 Al Viro 2017-06-29 267 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
