tree: https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git xfs-5.16-fixes head: 572afb64675281e83a9152f762854fd9998b5deb commit: 7997e4cb7c5ba7f8f389a17146a3c1c31c3da918 [49/52] xfs: fix build warning in xfs_file_compat_ioctl config: x86_64-randconfig-r024-20211123 (https://download.01.org/0day-ci/archive/20211124/202111240923.hs6s4zlt-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 67a1c45def8a75061203461ab0060c75c864df1c) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git/comm... git remote add djwong-xfs https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git git fetch --no-tags djwong-xfs xfs-5.16-fixes git checkout 7997e4cb7c5ba7f8f389a17146a3c1c31c3da918 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/xfs/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): error = mnt_want_write_file(filp); ^ fs/xfs/xfs_ioctl32.c:501:7: error: use of undeclared identifier 'error' if (error) ^ fs/xfs/xfs_ioctl32.c:502:11: error: use of undeclared identifier 'error' return error; ^ fs/xfs/xfs_ioctl32.c:503:3: error: use of undeclared identifier 'error' error = xfs_ioc_swapext(&sxp); ^ fs/xfs/xfs_ioctl32.c:505:10: error: use of undeclared identifier 'error' return error; ^ 5 errors generated. vim +/error +500 fs/xfs/xfs_ioctl32.c 28750975ace79c fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 432 4d4be482a4d78c fs/xfs/linux-2.6/xfs_ioctl32.c Christoph Hellwig 2008-12-09 433 long 4d4be482a4d78c fs/xfs/linux-2.6/xfs_ioctl32.c Christoph Hellwig 2008-12-09 434 xfs_file_compat_ioctl( d5547f9feea459 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 435 struct file *filp, e0edd5962bd83d fs/xfs/linux-2.6/xfs_ioctl32.c Nathan Scott 2006-03-29 436 unsigned cmd, 4d4be482a4d78c fs/xfs/linux-2.6/xfs_ioctl32.c Christoph Hellwig 2008-12-09 437 unsigned long p) ^1da177e4c3f41 fs/xfs/linux-2.6/xfs_ioctl32.c Linus Torvalds 2005-04-16 438 { 496ad9aa8ef448 fs/xfs/xfs_ioctl32.c Al Viro 2013-01-23 439 struct inode *inode = file_inode(filp); 4d4be482a4d78c fs/xfs/linux-2.6/xfs_ioctl32.c Christoph Hellwig 2008-12-09 440 struct xfs_inode *ip = XFS_I(inode); 4529e6d7a6ab72 fs/xfs/xfs_ioctl32.c Christoph Hellwig 2019-08-15 441 void __user *arg = compat_ptr(p); ^1da177e4c3f41 fs/xfs/linux-2.6/xfs_ioctl32.c Linus Torvalds 2005-04-16 442 cca28fb83d9e60 fs/xfs/linux-2.6/xfs_ioctl32.c Christoph Hellwig 2010-06-24 443 trace_xfs_file_compat_ioctl(ip); 4d4be482a4d78c fs/xfs/linux-2.6/xfs_ioctl32.c Christoph Hellwig 2008-12-09 444 ^1da177e4c3f41 fs/xfs/linux-2.6/xfs_ioctl32.c Linus Torvalds 2005-04-16 445 switch (cmd) { a9d25bde1e9b24 fs/xfs/xfs_ioctl32.c Nick Bowler 2018-12-17 446 #if defined(BROKEN_X86_ALIGNMENT) 526c420c44b45b fs/xfs/linux-2.6/xfs_ioctl32.c Eric Sandeen 2005-09-05 447 case XFS_IOC_ALLOCSP_32: 526c420c44b45b fs/xfs/linux-2.6/xfs_ioctl32.c Eric Sandeen 2005-09-05 448 case XFS_IOC_FREESP_32: 526c420c44b45b fs/xfs/linux-2.6/xfs_ioctl32.c Eric Sandeen 2005-09-05 449 case XFS_IOC_ALLOCSP64_32: 837a6e7f5cdb5e fs/xfs/xfs_ioctl32.c Christoph Hellwig 2019-10-24 450 case XFS_IOC_FREESP64_32: { d5547f9feea459 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 451 struct xfs_flock64 bf; d5547f9feea459 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 452 d5547f9feea459 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 453 if (xfs_compat_flock64_copyin(&bf, arg)) b474c7ae4395ba fs/xfs/xfs_ioctl32.c Eric Sandeen 2014-06-22 454 return -EFAULT; 526c420c44b45b fs/xfs/linux-2.6/xfs_ioctl32.c Eric Sandeen 2005-09-05 455 cmd = _NATIVE_IOC(cmd, struct xfs_flock64); 837a6e7f5cdb5e fs/xfs/xfs_ioctl32.c Christoph Hellwig 2019-10-24 456 return xfs_ioc_space(filp, &bf); d5547f9feea459 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 457 } 547e00c3c68126 fs/xfs/linux-2.6/xfs_ioctl32.c Michal Marek 2007-07-11 458 case XFS_IOC_FSGEOMETRY_V1_32: f69e8091c4a2ae fs/xfs/xfs_ioctl32.c Christoph Hellwig 2021-02-03 459 return xfs_compat_ioc_fsgeometry_v1(ip->i_mount, arg); 471d59103167c8 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 460 case XFS_IOC_FSGROWFSDATA_32: { 471d59103167c8 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 461 struct xfs_growfs_data in; 7997e4cb7c5ba7 fs/xfs/xfs_ioctl32.c Darrick J. Wong 2021-11-18 462 int error; 471d59103167c8 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 463 471d59103167c8 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 464 if (xfs_compat_growfs_data_copyin(&in, arg)) b474c7ae4395ba fs/xfs/xfs_ioctl32.c Eric Sandeen 2014-06-22 465 return -EFAULT; d9457dc0562499 fs/xfs/xfs_ioctl32.c Jan Kara 2012-06-12 466 error = mnt_want_write_file(filp); d9457dc0562499 fs/xfs/xfs_ioctl32.c Jan Kara 2012-06-12 467 if (error) d9457dc0562499 fs/xfs/xfs_ioctl32.c Jan Kara 2012-06-12 468 return error; f69e8091c4a2ae fs/xfs/xfs_ioctl32.c Christoph Hellwig 2021-02-03 469 error = xfs_growfs_data(ip->i_mount, &in); d9457dc0562499 fs/xfs/xfs_ioctl32.c Jan Kara 2012-06-12 470 mnt_drop_write_file(filp); 2451337dd04390 fs/xfs/xfs_ioctl32.c Dave Chinner 2014-06-25 471 return error; 471d59103167c8 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 472 } 471d59103167c8 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 473 case XFS_IOC_FSGROWFSRT_32: { 471d59103167c8 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 474 struct xfs_growfs_rt in; 7997e4cb7c5ba7 fs/xfs/xfs_ioctl32.c Darrick J. Wong 2021-11-18 475 int error; 471d59103167c8 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 476 471d59103167c8 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 477 if (xfs_compat_growfs_rt_copyin(&in, arg)) b474c7ae4395ba fs/xfs/xfs_ioctl32.c Eric Sandeen 2014-06-22 478 return -EFAULT; d9457dc0562499 fs/xfs/xfs_ioctl32.c Jan Kara 2012-06-12 479 error = mnt_want_write_file(filp); d9457dc0562499 fs/xfs/xfs_ioctl32.c Jan Kara 2012-06-12 480 if (error) d9457dc0562499 fs/xfs/xfs_ioctl32.c Jan Kara 2012-06-12 481 return error; f69e8091c4a2ae fs/xfs/xfs_ioctl32.c Christoph Hellwig 2021-02-03 482 error = xfs_growfs_rt(ip->i_mount, &in); d9457dc0562499 fs/xfs/xfs_ioctl32.c Jan Kara 2012-06-12 483 mnt_drop_write_file(filp); 2451337dd04390 fs/xfs/xfs_ioctl32.c Dave Chinner 2014-06-25 484 return error; 471d59103167c8 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 485 } ^1da177e4c3f41 fs/xfs/linux-2.6/xfs_ioctl32.c Linus Torvalds 2005-04-16 486 #endif e5d412f17846b0 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 487 /* long changes size, but xfs only copiese out 32 bits */ e5d412f17846b0 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 488 case XFS_IOC_GETVERSION_32: e5d412f17846b0 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 489 cmd = _NATIVE_IOC(cmd, long); 4d4be482a4d78c fs/xfs/linux-2.6/xfs_ioctl32.c Christoph Hellwig 2008-12-09 490 return xfs_file_ioctl(filp, cmd, p); 3725867dccfb83 fs/xfs/linux-2.6/xfs_ioctl32.c Christoph Hellwig 2009-09-01 491 case XFS_IOC_SWAPEXT_32: { e5d412f17846b0 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 492 struct xfs_swapext sxp; e5d412f17846b0 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 493 struct compat_xfs_swapext __user *sxu = arg; e5d412f17846b0 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 494 e5d412f17846b0 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 495 /* Bulk copy in up to the sx_stat field, then copy bstat */ e5d412f17846b0 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 496 if (copy_from_user(&sxp, sxu, e5d412f17846b0 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 497 offsetof(struct xfs_swapext, sx_stat)) || e5d412f17846b0 fs/xfs/linux-2.6/xfs_ioctl32.c sandeen(a)sandeen.net 2008-11-25 498 xfs_ioctl32_bstat_copyin(&sxp.sx_stat, &sxu->sx_stat)) b474c7ae4395ba fs/xfs/xfs_ioctl32.c Eric Sandeen 2014-06-22 499 return -EFAULT; d9457dc0562499 fs/xfs/xfs_ioctl32.c Jan Kara 2012-06-12 @500 error = mnt_want_write_file(filp); :::::: The code at line 500 was first introduced by commit :::::: d9457dc056249913a7abe8b71dc09e427e590e35 xfs: Convert to new freezing code :::::: TO: Jan Kara <jack(a)suse.cz&gt; :::::: CC: Al Viro <viro(a)zeniv.linux.org.uk&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org