tree: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git set_fs head: de161bb7b9111bef5b76a5736cc611eb9c908586 commit: 350a8879499d07c361d5a2cd1a22c1c44cbdeb20 [8/14] uaccess: generalize access_ok() config: mips-randconfig-s031-20220214 (https://download.01.org/0day-ci/archive/20220216/202202160307.mgIyyenx-lk...) compiler: mips64el-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/arnd/playground.git/commi... git remote add arnd-playground https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git git fetch --no-tags arnd-playground set_fs git checkout 350a8879499d07c361d5a2cd1a22c1c44cbdeb20 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=mips SHELL=/bin/bash arch/mips/sibyte/common/ 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 >>) command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition arch/mips/sibyte/common/sb_tbprof.c:449:14: sparse: expected void const [noderef] __user *ptr arch/mips/sibyte/common/sb_tbprof.c:449:14: sparse: got char *buf arch/mips/sibyte/common/sb_tbprof.c:464:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __user *to @@ got char *dest @@ arch/mips/sibyte/common/sb_tbprof.c:464:38: sparse: expected void [noderef] __user *to arch/mips/sibyte/common/sb_tbprof.c:464:38: sparse: got char *dest arch/mips/sibyte/common/sb_tbprof.c:515:23: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected int [noderef] __user *__p @@ got int * @@ arch/mips/sibyte/common/sb_tbprof.c:515:23: sparse: expected int [noderef] __user *__p arch/mips/sibyte/common/sb_tbprof.c:515:23: sparse: got int * arch/mips/sibyte/common/sb_tbprof.c:531:27: sparse: sparse: incorrect type in initializer (incompatible argument 2 (different address spaces)) @@ expected long ( *read )( ... ) @@ got long ( * )( ... ) @@ arch/mips/sibyte/common/sb_tbprof.c:531:27: sparse: expected long ( *read )( ... ) arch/mips/sibyte/common/sb_tbprof.c:531:27: sparse: got long ( * )( ... ) vim +449 arch/mips/sibyte/common/sb_tbprof.c ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 439 ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 440 static ssize_t sbprof_tb_read(struct file *filp, char *buf, ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 441 size_t size, loff_t *offp) ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 442 { ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 443 int cur_sample, sample_off, cur_count, sample_left; bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 444 char *src; d619f38fdacb5ce arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 445 int count = 0; d619f38fdacb5ce arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 446 char *dest = buf; d619f38fdacb5ce arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 447 long cur_off = *offp; bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 448 96d4f267e40f950 arch/mips/sibyte/common/sb_tbprof.c Linus Torvalds 2019-01-03 @449 if (!access_ok(buf, size)) bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 450 return -EFAULT; bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 451 bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 452 mutex_lock(&sbp.lock); ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 453 ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 454 count = 0; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 455 cur_sample = cur_off / TB_SAMPLE_SIZE; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 456 sample_off = cur_off % TB_SAMPLE_SIZE; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 457 sample_left = TB_SAMPLE_SIZE - sample_off; bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 458 ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 459 while (size && (cur_sample < sbp.next_tb_sample)) { bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 460 int err; bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 461 ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 462 cur_count = size < sample_left ? size : sample_left; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 463 src = (char *)(((long)sbp.sbprof_tbbuf[cur_sample])+sample_off); bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 464 err = __copy_to_user(dest, src, cur_count); bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 465 if (err) { bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 466 *offp = cur_off + cur_count - err; bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 467 mutex_unlock(&sbp.lock); bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 468 return err; bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 469 } bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 470 pr_debug(DEVNAME ": read from sample %d, %d bytes\n", bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 471 cur_sample, cur_count); ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 472 size -= cur_count; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 473 sample_left -= cur_count; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 474 if (!sample_left) { ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 475 cur_sample++; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 476 sample_off = 0; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 477 sample_left = TB_SAMPLE_SIZE; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 478 } else { ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 479 sample_off += cur_count; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 480 } ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 481 cur_off += cur_count; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 482 dest += cur_count; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 483 count += cur_count; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 484 } ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 485 *offp = cur_off; bb9b813bb665cdb arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 486 mutex_unlock(&sbp.lock); ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 487 ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 488 return count; ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 489 } ^1da177e4c3f415 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 490 :::::: The code at line 449 was first introduced by commit :::::: 96d4f267e40f9509e8a66e2b39e8b95655617693 Remove 'type' argument from access_ok() function :::::: TO: Linus Torvalds <torvalds(a)linux-foundation.org&gt; :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org