From: Darrick J. Wong <djwong@xxxxxxxxxx> Back in the 6.2-rc1 days, Eric Whitney reported a fstests regression in ext4 against generic/454. The cause of this test failure was the unfortunate combination of setting an xattr name containing UTF8 encoded emoji, an xattr hash function that accepted a char pointer with no explicit signedness, signed type extension of those chars to an int, and the 6.2 build tools maintainers deciding to mandate -funsigned-char across the board. As a result, the ondisk extended attribute structure written out by 6.1 and 6.2 were not the same. This discrepancy, in fact, had been noticeable if a filesystem with such an xattr were moved between any two architectures that don't employ the same signedness of a raw "char" declaration. The only reason anyone noticed is that x86 gcc defaults to signed, and no such -funsigned-char update was made to e2fsprogs, so e2fsck immediately started reporting data corruption. After a day and a half of discussing how to handle this use case (xattrs with bit 7 set anywhere in the name) without breaking existing users, Linus merged his own patch and didn't tell the mailing list. None of the developers noticed until AUTOSEL made an announcement. In the end, this problem could have been detected much earlier if there had been any useful tests of hash function(s) in use inside ext4 to make sure that they always produce the same outputs given the same inputs. The XFS dirent/xattr name hash takes a uint8_t*, so I don't think it's vulnerable to this problem. However, let's avoid all this drama by adding our own self test to check that the da hash produces the same outputs for a static pile of inputs on various platforms. This will be followed up in xfsprogs with a similar patch. Link: https://lore.kernel.org/linux-ext4/Y8bpkm3jA3bDm3eL@debian-BULLSEYE-live-builder-AMD64/ Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx> --- fs/xfs/Makefile | 1 fs/xfs/xfs_dahash_test.c | 662 ++++++++++++++++++++++++++++++++++++++++++++++ fs/xfs/xfs_dahash_test.h | 12 + fs/xfs/xfs_super.c | 5 4 files changed, 680 insertions(+) create mode 100644 fs/xfs/xfs_dahash_test.c create mode 100644 fs/xfs/xfs_dahash_test.h diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index 35c1b41a3ef1..bbabf898cabc 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -127,6 +127,7 @@ xfs-y += xfs_aops.o \ xfs_bmap_util.o \ xfs_bio_io.o \ xfs_buf.o \ + xfs_dahash_test.o \ xfs_dir2_readdir.o \ xfs_discard.o \ xfs_error.o \ diff --git a/fs/xfs/xfs_dahash_test.c b/fs/xfs/xfs_dahash_test.c new file mode 100644 index 000000000000..230651ab5ce4 --- /dev/null +++ b/fs/xfs/xfs_dahash_test.c @@ -0,0 +1,662 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@xxxxxxxxxx> + */ +#include "xfs.h" +#include "xfs_fs.h" +#include "xfs_shared.h" +#include "xfs_format.h" +#include "xfs_da_format.h" +#include "xfs_da_btree.h" +#include "xfs_dahash_test.h" + +/* 4096 random bytes */ +static uint8_t __initdata __attribute__((__aligned__(8))) test_buf[] = +{ + 0x5b, 0x85, 0x21, 0xcb, 0x09, 0x68, 0x7d, 0x30, + 0xc7, 0x69, 0xd7, 0x30, 0x92, 0xde, 0x59, 0xe4, + 0xc9, 0x6e, 0x8b, 0xdb, 0x98, 0x6b, 0xaa, 0x60, + 0xa8, 0xb5, 0xbc, 0x6c, 0xa9, 0xb1, 0x5b, 0x2c, + 0xea, 0xb4, 0x92, 0x6a, 0x3f, 0x79, 0x91, 0xe4, + 0xe9, 0x70, 0x51, 0x8c, 0x7f, 0x95, 0x6f, 0x1a, + 0x56, 0xa1, 0x5c, 0x27, 0x03, 0x67, 0x9f, 0x3a, + 0xe2, 0x31, 0x11, 0x29, 0x6b, 0x98, 0xfc, 0xc4, + 0x53, 0x24, 0xc5, 0x8b, 0xce, 0x47, 0xb2, 0xb9, + 0x32, 0xcb, 0xc1, 0xd0, 0x03, 0x57, 0x4e, 0xd4, + 0xe9, 0x3c, 0xa1, 0x63, 0xcf, 0x12, 0x0e, 0xca, + 0xe1, 0x13, 0xd1, 0x93, 0xa6, 0x88, 0x5c, 0x61, + 0x5b, 0xbb, 0xf0, 0x19, 0x46, 0xb4, 0xcf, 0x9e, + 0xb6, 0x6b, 0x4c, 0x3a, 0xcf, 0x60, 0xf9, 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0x48, + 0x1b, 0xfb, 0x22, 0x48, 0x70, 0x16, 0x29, 0x9e, + 0x5b, 0xc1, 0x2c, 0x66, 0x23, 0xbc, 0xf0, 0x1f, + 0xef, 0xaf, 0xe4, 0xd6, 0x04, 0x19, 0x82, 0x7a, + 0x0b, 0xba, 0x4b, 0x46, 0xb1, 0x6a, 0x85, 0x5d, + 0xb4, 0x73, 0xd6, 0x21, 0xa1, 0x71, 0x60, 0x14, + 0xee, 0x0a, 0x77, 0xc4, 0x66, 0x2e, 0xf9, 0x69, + 0x30, 0xaf, 0x41, 0x0b, 0xc8, 0x83, 0x3c, 0x53, + 0x99, 0x19, 0x27, 0x46, 0xf7, 0x41, 0x6e, 0x56, + 0xdc, 0x94, 0x28, 0x67, 0x4e, 0xb7, 0x25, 0x48, + 0x8a, 0xc2, 0xe0, 0x60, 0x96, 0xcc, 0x18, 0xf4, + 0x84, 0xdd, 0xa7, 0x5e, 0x3e, 0x05, 0x0b, 0x26, + 0x26, 0xb2, 0x5c, 0x1f, 0x57, 0x1a, 0x04, 0x7e, + 0x6a, 0xe3, 0x2f, 0xb4, 0x35, 0xb6, 0x38, 0x40, + 0x40, 0xcd, 0x6f, 0x87, 0x2e, 0xef, 0xa3, 0xd7, + 0xa9, 0xc2, 0xe8, 0x0d, 0x27, 0xdf, 0x44, 0x62, + 0x99, 0xa0, 0xfc, 0xcf, 0x81, 0x78, 0xcb, 0xfe, + 0xe5, 0xa0, 0x03, 0x4e, 0x6c, 0xd7, 0xf4, 0xaf, + 0x7a, 0xbb, 0x61, 0x82, 0xfe, 0x71, 0x89, 0xb2, + 0x22, 0x7c, 0x8e, 0x83, 0x04, 0xce, 0xf6, 0x5d, + 0x84, 0x8f, 0x95, 0x6a, 0x7f, 0xad, 0xfd, 0x32, + 0x9c, 0x5e, 0xe4, 0x9c, 0x89, 0x60, 0x54, 0xaa, + 0x96, 0x72, 0xd2, 0xd7, 0x36, 0x85, 0xa9, 0x45, + 0xd2, 0x2a, 0xa1, 0x81, 0x49, 0x6f, 0x7e, 0x04, + 0xfa, 0xe2, 0xfe, 0x90, 0x26, 0x77, 0x5a, 0x33, + 0xb8, 0x04, 0x9a, 0x7a, 0xe6, 0x4c, 0x4f, 0xad, + 0x72, 0x96, 0x08, 0x28, 0x58, 0x13, 0xf8, 0xc4, + 0x1c, 0xf0, 0xc3, 0x45, 0x95, 0x49, 0x20, 0x8c, + 0x9f, 0x39, 0x70, 0xe1, 0x77, 0xfe, 0xd5, 0x4b, + 0xaf, 0x86, 0xda, 0xef, 0x22, 0x06, 0x83, 0x36, + 0x29, 0x12, 0x11, 0x40, 0xbc, 0x3b, 0x86, 0xaa, + 0xaa, 0x65, 0x60, 0xc3, 0x80, 0xca, 0xed, 0xa9, + 0xf3, 0xb0, 0x79, 0x96, 0xa2, 0x55, 0x27, 0x28, + 0x55, 0x73, 0x26, 0xa5, 0x50, 0xea, 0x92, 0x4b, + 0x3c, 0x5c, 0x82, 0x33, 0xf0, 0x01, 0x3f, 0x03, + 0xc1, 0x08, 0x05, 0xbf, 0x98, 0xf4, 0x9b, 0x6d, + 0xa5, 0xa8, 0xb4, 0x82, 0x0c, 0x06, 0xfa, 0xff, + 0x2d, 0x08, 0xf3, 0x05, 0x4f, 0x57, 0x2a, 0x39, + 0xd4, 0x83, 0x0d, 0x75, 0x51, 0xd8, 0x5b, 0x1b, + 0xd3, 0x51, 0x5a, 0x32, 0x2a, 0x9b, 0x32, 0xb2, + 0xf2, 0xa4, 0x96, 0x12, 0xf2, 0xae, 0x40, 0x34, + 0x67, 0xa8, 0xf5, 0x44, 0xd5, 0x35, 0x53, 0xfe, + 0xa3, 0x60, 0x96, 0x63, 0x0f, 0x1f, 0x6e, 0xb0, + 0x5a, 0x42, 0xa6, 0xfc, 0x51, 0x0b, 0x60, 0x27, + 0xbc, 0x06, 0x71, 0xed, 0x65, 0x5b, 0x23, 0x86, + 0x4a, 0x07, 0x3b, 0x22, 0x07, 0x46, 0xe6, 0x90, + 0x3e, 0xf3, 0x25, 0x50, 0x1b, 0x4c, 0x7f, 0x03, + 0x08, 0xa8, 0x36, 0x6b, 0x87, 0xe5, 0xe3, 0xdb, + 0x9a, 0x38, 0x83, 0xff, 0x9f, 0x1a, 0x9f, 0x57, + 0xa4, 0x2a, 0xf6, 0x37, 0xbc, 0x1a, 0xff, 0xc9, + 0x1e, 0x35, 0x0c, 0xc3, 0x7c, 0xa3, 0xb2, 0xe5, + 0xd2, 0xc6, 0xb4, 0x57, 0x47, 0xe4, 0x32, 0x16, + 0x6d, 0xa9, 0xae, 0x64, 0xe6, 0x2d, 0x8d, 0xc5, + 0x8d, 0x50, 0x8e, 0xe8, 0x1a, 0x22, 0x34, 0x2a, + 0xd9, 0xeb, 0x51, 0x90, 0x4a, 0xb1, 0x41, 0x7d, + 0x64, 0xf9, 0xb9, 0x0d, 0xf6, 0x23, 0x33, 0xb0, + 0x33, 0xf4, 0xf7, 0x3f, 0x27, 0x84, 0xc6, 0x0f, + 0x54, 0xa5, 0xc0, 0x2e, 0xec, 0x0b, 0x3a, 0x48, + 0x6e, 0x80, 0x35, 0x81, 0x43, 0x9b, 0x90, 0xb1, + 0xd0, 0x2b, 0xea, 0x21, 0xdc, 0xda, 0x5b, 0x09, + 0xf4, 0xcc, 0x10, 0xb4, 0xc7, 0xfe, 0x79, 0x51, + 0xc3, 0xc5, 0xac, 0x88, 0x74, 0x84, 0x0b, 0x4b, + 0xca, 0x79, 0x16, 0x29, 0xfb, 0x69, 0x54, 0xdf, + 0x41, 0x7e, 0xe9, 0xc7, 0x8e, 0xea, 0xa5, 0xfe, + 0xfc, 0x76, 0x0e, 0x90, 0xc4, 0x92, 0x38, 0xad, + 0x7b, 0x48, 0xe6, 0x6e, 0xf7, 0x21, 0xfd, 0x4e, + 0x93, 0x0a, 0x7b, 0x41, 0x83, 0x68, 0xfb, 0x57, + 0x51, 0x76, 0x34, 0xa9, 0x6c, 0x00, 0xaa, 0x4f, + 0x66, 0x65, 0x98, 0x4a, 0x4f, 0xa3, 0xa0, 0xef, + 0x69, 0x3f, 0xe3, 0x1c, 0x92, 0x8c, 0xfd, 0xd8, + 0xe8, 0xde, 0x7c, 0x7f, 0x3e, 0x84, 0x8e, 0x69, + 0x3c, 0xf1, 0xf2, 0x05, 0x46, 0xdc, 0x2f, 0x9d, + 0x5e, 0x6e, 0x4c, 0xfb, 0xb5, 0x99, 0x2a, 0x59, + 0x63, 0xc1, 0x34, 0xbc, 0x57, 0xc0, 0x0d, 0xb9, + 0x61, 0x25, 0xf3, 0x33, 0x23, 0x51, 0xb6, 0x0d, + 0x07, 0xa6, 0xab, 0x94, 0x4a, 0xb7, 0x2a, 0xea, + 0xee, 0xac, 0xa3, 0xc3, 0x04, 0x8b, 0x0e, 0x56, + 0xfe, 0x44, 0xa7, 0x39, 0xe2, 0xed, 0xed, 0xb4, + 0x22, 0x2b, 0xac, 0x12, 0x32, 0x28, 0x91, 0xd8, + 0xa5, 0xab, 0xff, 0x5f, 0xe0, 0x4b, 0xda, 0x78, + 0x17, 0xda, 0xf1, 0x01, 0x5b, 0xcd, 0xe2, 0x5f, + 0x50, 0x45, 0x73, 0x2b, 0xe4, 0x76, 0x77, 0xf4, + 0x64, 0x1d, 0x43, 0xfb, 0x84, 0x7a, 0xea, 0x91, + 0xae, 0xf9, 0x9e, 0xb7, 0xb4, 0xb0, 0x91, 0x5f, + 0x16, 0x35, 0x9a, 0x11, 0xb8, 0xc7, 0xc1, 0x8c, + 0xc6, 0x10, 0x8d, 0x2f, 0x63, 0x4a, 0xa7, 0x57, + 0x3a, 0x51, 0xd6, 0x32, 0x2d, 0x64, 0x72, 0xd4, + 0x66, 0xdc, 0x10, 0xa6, 0x67, 0xd6, 0x04, 0x23, + 0x9d, 0x0a, 0x11, 0x77, 0xdd, 0x37, 0x94, 0x17, + 0x3c, 0xbf, 0x8b, 0x65, 0xb0, 0x2e, 0x5e, 0x66, + 0x47, 0x64, 0xac, 0xdd, 0xf0, 0x84, 0xfd, 0x39, + 0xfa, 0x15, 0x5d, 0xef, 0xae, 0xca, 0xc1, 0x36, + 0xa7, 0x5c, 0xbf, 0xc7, 0x08, 0xc2, 0x66, 0x00, + 0x74, 0x74, 0x4e, 0x27, 0x3f, 0x55, 0x8a, 0xb7, + 0x38, 0x66, 0x83, 0x6d, 0xcf, 0x99, 0x9e, 0x60, + 0x8f, 0xdd, 0x2e, 0x62, 0x22, 0x0e, 0xef, 0x0c, + 0x98, 0xa7, 0x85, 0x74, 0x3b, 0x9d, 0xec, 0x9e, + 0xa9, 0x19, 0x72, 0xa5, 0x7f, 0x2c, 0x39, 0xb7, + 0x7d, 0xb7, 0xf1, 0x12, 0x65, 0x27, 0x4b, 0x5a, + 0xde, 0x17, 0xfe, 0xad, 0x44, 0xf3, 0x20, 0x4d, + 0xfd, 0xe4, 0x1f, 0xb5, 0x81, 0xb0, 0x36, 0x37, + 0x08, 0x6f, 0xc3, 0x0c, 0xe9, 0x85, 0x98, 0x82, + 0xa9, 0x62, 0x0c, 0xc4, 0x97, 0xc0, 0x50, 0xc8, + 0xa7, 0x3c, 0x50, 0x9f, 0x43, 0xb9, 0xcd, 0x5e, + 0x4d, 0xfa, 0x1c, 0x4b, 0x0b, 0xa9, 0x98, 0x85, + 0x38, 0x92, 0xac, 0x8d, 0xe4, 0xad, 0x9b, 0x98, + 0xab, 0xd9, 0x38, 0xac, 0x62, 0x52, 0xa3, 0x22, + 0x63, 0x0f, 0xbf, 0x95, 0x48, 0xdf, 0x69, 0xe7, + 0x8b, 0x33, 0xd5, 0xb2, 0xbd, 0x05, 0x49, 0x49, + 0x9d, 0x57, 0x73, 0x19, 0x33, 0xae, 0xfa, 0x33, + 0xf1, 0x19, 0xa8, 0x80, 0xce, 0x04, 0x9f, 0xbc, + 0x1d, 0x65, 0x82, 0x1b, 0xe5, 0x3a, 0x51, 0xc8, + 0x1c, 0x21, 0xe3, 0x5d, 0xf3, 0x7d, 0x9b, 0x2f, + 0x2c, 0x1d, 0x4a, 0x7f, 0x9b, 0x68, 0x35, 0xa3, + 0xb2, 0x50, 0xf7, 0x62, 0x79, 0xcd, 0xf4, 0x98, + 0x4f, 0xe5, 0x63, 0x7c, 0x3e, 0x45, 0x31, 0x8c, + 0x16, 0xa0, 0x12, 0xc8, 0x58, 0xce, 0x39, 0xa6, + 0xbc, 0x54, 0xdb, 0xc5, 0xe0, 0xd5, 0xba, 0xbc, + 0xb9, 0x04, 0xf4, 0x8d, 0xe8, 0x2f, 0x15, 0x9d, +}; + +/* 100 test cases */ +static struct dahash_test { + uint16_t start; /* random 12 bit offset in buf */ + uint16_t length; /* random 8 bit length of test */ + xfs_dahash_t dahash; /* expected dahash result */ +} test[] __initdata = +{ + {0x0567, 0x0097, 0x96951389}, + {0x0869, 0x0055, 0x6455ab4f}, + {0x0c51, 0x00be, 0x8663afde}, + {0x044a, 0x00fc, 0x98fbe432}, + {0x0f29, 0x0079, 0x42371997}, + {0x08ba, 0x0052, 0x942be4f7}, + {0x01f2, 0x0013, 0x5262687e}, + {0x09e3, 0x00e2, 0x8ffb0908}, + {0x007c, 0x0051, 0xb3158491}, + {0x0854, 0x001f, 0x83bb20d9}, + {0x031b, 0x0008, 0x98970bdf}, + {0x0de7, 0x0027, 0xbfbf6f6c}, + {0x0f76, 0x0005, 0x906a7105}, + {0x092e, 0x00d0, 0x86631850}, + {0x0233, 0x0082, 0xdbdd914e}, + {0x04c9, 0x0075, 0x5a400a9e}, + {0x0b66, 0x0099, 0xae128b45}, + {0x000d, 0x00ed, 0xe61c216a}, + {0x0a31, 0x003d, 0xf69663b9}, + {0x00a3, 0x0052, 0x643c39ae}, + {0x0125, 0x00d5, 0x7c310b0d}, + {0x0105, 0x004a, 0x06a77e74}, + {0x0858, 0x008e, 0x265bc739}, + {0x045e, 0x0095, 0x13d6b192}, + {0x0dab, 0x003c, 0xc4498704}, + {0x00cd, 0x00b5, 0x802a4e2d}, + {0x069b, 0x008c, 0x5df60f71}, + {0x0454, 0x006c, 0x5f03d8bb}, + {0x040e, 0x0032, 0x0ce513b5}, + {0x0874, 0x00e2, 0x6a811fb3}, + {0x0521, 0x00b4, 0x93296833}, + {0x0ddc, 0x00cf, 0xf9305338}, + {0x0a70, 0x0023, 0x239549ea}, + {0x083e, 0x0027, 0x2d88ba97}, + {0x0241, 0x00a7, 0xfe0b32e1}, + {0x0dfc, 0x0096, 0x1a11e815}, + {0x023e, 0x001e, 0xebc9a1f3}, + {0x067e, 0x0066, 0xb1067f81}, + {0x09ea, 0x000e, 0x46fd7247}, + {0x036b, 0x008c, 0x1a39acdf}, + {0x078f, 0x0030, 0x964042ab}, + {0x085c, 0x008f, 0x1829edab}, + {0x02ec, 0x009f, 0x6aefa72d}, + {0x043b, 0x00ce, 0x65642ff5}, + {0x0a32, 0x00b8, 0xbd82759e}, + {0x0d3c, 0x0087, 0xf4d66d54}, + {0x09ec, 0x008a, 0x06bfa1ff}, + {0x0902, 0x0015, 0x755025d2}, + {0x08fe, 0x000e, 0xf690ce2d}, + {0x00fb, 0x00dc, 0xe55f1528}, + {0x0eaa, 0x003a, 0x0fe0a8d7}, + {0x05fb, 0x0006, 0x86281cfb}, + {0x0dd1, 0x00a7, 0x60ab51b4}, + {0x0005, 0x001b, 0xf51d969b}, + {0x077c, 0x00dd, 0xc2fed268}, + {0x0575, 0x00f5, 0x432c0b1a}, + {0x05be, 0x0088, 0x78baa04b}, + {0x0c89, 0x0068, 0xeda9e428}, + {0x0f5c, 0x0068, 0xec143c76}, + {0x06a8, 0x0009, 0xd72651ce}, + {0x060f, 0x008e, 0x765426cd}, + {0x07b1, 0x0047, 0x2cfcfa0c}, + {0x04f1, 0x0041, 0x55b172f9}, + {0x0e05, 0x00ac, 0x61efde93}, + {0x0bf7, 0x0097, 0x05b83eee}, + {0x04e9, 0x00f3, 0x9928223a}, + {0x023a, 0x0005, 0xdfada9bc}, + {0x0acb, 0x000e, 0x2217cecd}, + {0x0148, 0x0060, 0xbc3f7405}, + {0x0764, 0x0059, 0xcbc201b1}, + {0x021f, 0x0059, 0x5d6b2256}, + {0x0f1e, 0x006c, 0xdefeeb45}, + {0x071c, 0x00b9, 0xb9b59309}, + {0x0564, 0x0063, 0xae064271}, + {0x0b14, 0x0044, 0xdb867d9b}, + {0x0e5a, 0x0055, 0xff06b685}, + {0x015e, 0x00ba, 0x1115ccbc}, + {0x0379, 0x00e6, 0x5f4e58dd}, + {0x013b, 0x0067, 0x4897427e}, + {0x0e64, 0x0071, 0x7af2b7a4}, + {0x0a11, 0x0050, 0x92105726}, + {0x0109, 0x0055, 0xd0d000f9}, + {0x00aa, 0x0022, 0x815d229d}, + {0x09ac, 0x004f, 0x02f9d985}, + {0x0e1b, 0x00ce, 0x5cf92ab4}, + {0x08af, 0x00d8, 0x17ca72d1}, + {0x0e33, 0x000a, 0xda2dba6b}, + {0x0ee3, 0x006a, 0xb00048e5}, + {0x0648, 0x001a, 0x2364b8cb}, + {0x0315, 0x0085, 0x0596fd0d}, + {0x0fbb, 0x003e, 0x298230ca}, + {0x0422, 0x006a, 0x78ada4ab}, + {0x04ba, 0x0073, 0xced1fbc2}, + {0x007d, 0x0061, 0x4b7ff236}, + {0x070b, 0x00d0, 0x261cf0ae}, + {0x0c1a, 0x0035, 0x8be92ee2}, + {0x0af8, 0x0063, 0x824dcf03}, + {0x08f8, 0x006d, 0xd289710c}, + {0x021b, 0x00ee, 0x6ac1c41d}, + {0x05b5, 0x00da, 0x8e52f0e2}, +}; + +int __init +xfs_dahash_test(void) +{ + unsigned int i; + unsigned int errors = 0; + + for (i = 0; i < ARRAY_SIZE(test); i++) { + xfs_dahash_t hash; + + hash = xfs_da_hashname(test_buf + test[i].start, + test[i].length); + if (hash != test[i].dahash) + errors++; + } + + if (errors) { + printk(KERN_ERR "xfs dir/attr hash test failed %u times!", + errors); + return -ERANGE; + } + + return 0; +} diff --git a/fs/xfs/xfs_dahash_test.h b/fs/xfs/xfs_dahash_test.h new file mode 100644 index 000000000000..1a05bf4bd9e1 --- /dev/null +++ b/fs/xfs/xfs_dahash_test.h @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2023 Oracle. All Rights Reserved. + * Author: Darrick J. Wong <djwong@xxxxxxxxxx> + */ +#ifndef __XFS_DAHASH_TEST_H__ +#define __XFS_DAHASH_TEST_H__ + +int xfs_dahash_test(void); + +#endif /* __XFS_DAHASH_TEST_H__ */ + diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 2479b5cbd75e..4f814f9e12ab 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -41,6 +41,7 @@ #include "xfs_attr_item.h" #include "xfs_xattr.h" #include "xfs_iunlink_item.h" +#include "xfs_dahash_test.h" #include <linux/magic.h> #include <linux/fs_context.h> @@ -2286,6 +2287,10 @@ init_xfs_fs(void) xfs_check_ondisk_structs(); + error = xfs_dahash_test(); + if (error) + return error; + printk(KERN_INFO XFS_VERSION_STRING " with " XFS_BUILD_OPTIONS " enabled\n");
