tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 11030fe96b57ad843518b0e9430f3cd4b3610ce2 commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces date: 7 weeks ago config: mips-randconfig-s032-20200809 (attached as .config) compiler: mipsel-linux-gcc (GCC) 9.3.0 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: v0.6.2-118-ge1578773-dirty git checkout 670d0a4b10704667765f7d18f7592993d02783aa # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=mips 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 >>) arch/mips/sibyte/common/sb_tbprof.c:449:14: sparse: got char *buf arch/mips/sibyte/common/sb_tbprof.c:464:38: sparse: got char *dest 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 int ( *read )( ... ) @@ got int ( * )( ... ) @@ arch/mips/sibyte/common/sb_tbprof.c:531:27: sparse: expected int ( *read )( ... ) arch/mips/sibyte/common/sb_tbprof.c:531:27: sparse: got int ( * )( ... ) -- arch/mips/sibyte/swarm/setup.c:59:5: sparse: sparse: symbol 'swarm_be_handler' was not declared. Should it be static? arch/mips/sibyte/swarm/setup.c:75:21: sparse: sparse: symbol 'swarm_rtc_type' was not declared. Should it be static? arch/mips/sibyte/swarm/setup.c:162:21: sparse: expected void *reg arch/mips/sibyte/swarm/setup.c:165:37: sparse: got void *reg arch/mips/sibyte/swarm/setup.c:167:40: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *mem @@ got void *reg @@ arch/mips/sibyte/swarm/setup.c:167:40: sparse: expected void volatile [noderef] __iomem *mem arch/mips/sibyte/swarm/setup.c:167:40: sparse: got void *reg vim +449 arch/mips/sibyte/common/sb_tbprof.c ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 439 ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 440 static ssize_t sbprof_tb_read(struct file *filp, char *buf, ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 441 size_t size, loff_t *offp) ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 442 { ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 443 int cur_sample, sample_off, cur_count, sample_left; bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 444 char *src; d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 445 int count = 0; d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 446 char *dest = buf; d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 447 long cur_off = *offp; bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 448 96d4f267e40f95 arch/mips/sibyte/common/sb_tbprof.c Linus Torvalds 2019-01-03 @449 if (!access_ok(buf, size)) bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 450 return -EFAULT; bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 451 bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 452 mutex_lock(&sbp.lock); ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 453 ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 454 count = 0; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 455 cur_sample = cur_off / TB_SAMPLE_SIZE; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 456 sample_off = cur_off % TB_SAMPLE_SIZE; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 457 sample_left = TB_SAMPLE_SIZE - sample_off; bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 458 ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 459 while (size && (cur_sample < sbp.next_tb_sample)) { bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 460 int err; bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 461 ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 462 cur_count = size < sample_left ? size : sample_left; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 463 src = (char *)(((long)sbp.sbprof_tbbuf[cur_sample])+sample_off); bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 @464 err = __copy_to_user(dest, src, cur_count); bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 465 if (err) { bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 466 *offp = cur_off + cur_count - err; bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 467 mutex_unlock(&sbp.lock); bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 468 return err; bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 469 } bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 470 pr_debug(DEVNAME ": read from sample %d, %d bytes\n", bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 471 cur_sample, cur_count); ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 472 size -= cur_count; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 473 sample_left -= cur_count; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 474 if (!sample_left) { ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 475 cur_sample++; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 476 sample_off = 0; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 477 sample_left = TB_SAMPLE_SIZE; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 478 } else { ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 479 sample_off += cur_count; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 480 } ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 481 cur_off += cur_count; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 482 dest += cur_count; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 483 count += cur_count; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 484 } ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 485 *offp = cur_off; bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 486 mutex_unlock(&sbp.lock); ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 487 ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 488 return count; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 489 } ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 490 d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 491 static long sbprof_tb_ioctl(struct file *filp, d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 492 unsigned int command, ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 493 unsigned long arg) ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 494 { d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 495 int err = 0; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 496 ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 497 switch (command) { ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 498 case SBPROF_ZBSTART: bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 499 mutex_lock(&sbp.lock); d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 500 err = sbprof_zbprof_start(filp); bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 501 mutex_unlock(&sbp.lock); ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 502 break; bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 503 ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 504 case SBPROF_ZBSTOP: bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 505 mutex_lock(&sbp.lock); d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 506 err = sbprof_zbprof_stop(); bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 507 mutex_unlock(&sbp.lock); ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 508 break; bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 509 d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 510 case SBPROF_ZBWAITFULL: { d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 511 err = wait_event_interruptible(sbp.tb_read, TB_FULL); d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 512 if (err) bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 513 break; bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 514 d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 @515 err = put_user(TB_FULL, (int *) arg); bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 516 break; d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 517 } bb9b813bb665cd arch/mips/sibyte/sb1250/bcm1250_tbprof.c Ralf Baechle 2007-03-09 518 ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 519 default: d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 520 err = -EINVAL; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 521 break; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 522 } ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 523 d619f38fdacb5c arch/mips/sibyte/common/sb_tbprof.c Mark Mason 2007-03-29 524 return err; ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 525 } ^1da177e4c3f41 arch/mips/sibyte/sb1250/bcm1250_tbprof.c Linus Torvalds 2005-04-16 526 :::::: 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