xref: /openbmc/linux/fs/xfs/scrub/inode.c (revision e8254a8e)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2017 Oracle.  All Rights Reserved.
4  * Author: Darrick J. Wong <darrick.wong@oracle.com>
5  */
6 #include "xfs.h"
7 #include "xfs_fs.h"
8 #include "xfs_shared.h"
9 #include "xfs_format.h"
10 #include "xfs_trans_resv.h"
11 #include "xfs_mount.h"
12 #include "xfs_btree.h"
13 #include "xfs_log_format.h"
14 #include "xfs_inode.h"
15 #include "xfs_ialloc.h"
16 #include "xfs_da_format.h"
17 #include "xfs_reflink.h"
18 #include "xfs_rmap.h"
19 #include "xfs_bmap_util.h"
20 #include "scrub/scrub.h"
21 #include "scrub/common.h"
22 #include "scrub/btree.h"
23 
24 /*
25  * Grab total control of the inode metadata.  It doesn't matter here if
26  * the file data is still changing; exclusive access to the metadata is
27  * the goal.
28  */
29 int
30 xchk_setup_inode(
31 	struct xfs_scrub	*sc)
32 {
33 	int			error;
34 
35 	/*
36 	 * Try to get the inode.  If the verifiers fail, we try again
37 	 * in raw mode.
38 	 */
39 	error = xchk_get_inode(sc);
40 	switch (error) {
41 	case 0:
42 		break;
43 	case -EFSCORRUPTED:
44 	case -EFSBADCRC:
45 		return xchk_trans_alloc(sc, 0);
46 	default:
47 		return error;
48 	}
49 
50 	/* Got the inode, lock it and we're ready to go. */
51 	sc->ilock_flags = XFS_IOLOCK_EXCL | XFS_MMAPLOCK_EXCL;
52 	xfs_ilock(sc->ip, sc->ilock_flags);
53 	error = xchk_trans_alloc(sc, 0);
54 	if (error)
55 		goto out;
56 	sc->ilock_flags |= XFS_ILOCK_EXCL;
57 	xfs_ilock(sc->ip, XFS_ILOCK_EXCL);
58 
59 out:
60 	/* scrub teardown will unlock and release the inode for us */
61 	return error;
62 }
63 
64 /* Inode core */
65 
66 /* Validate di_extsize hint. */
67 STATIC void
68 xchk_inode_extsize(
69 	struct xfs_scrub	*sc,
70 	struct xfs_dinode	*dip,
71 	xfs_ino_t		ino,
72 	uint16_t		mode,
73 	uint16_t		flags)
74 {
75 	xfs_failaddr_t		fa;
76 	uint32_t		value = be32_to_cpu(dip->di_extsize);
77 
78 	fa = xfs_inode_validate_extsize(sc->mp, value, mode, flags);
79 	if (fa)
80 		xchk_ino_set_corrupt(sc, ino);
81 
82 	/*
83 	 * XFS allows a sysadmin to change the rt extent size when adding a rt
84 	 * section to a filesystem after formatting.  If there are any
85 	 * directories with extszinherit and rtinherit set, the hint could
86 	 * become misaligned with the new rextsize.  The verifier doesn't check
87 	 * this, because we allow rtinherit directories even without an rt
88 	 * device.  Flag this as an administrative warning since we will clean
89 	 * this up eventually.
90 	 */
91 	if ((flags & XFS_DIFLAG_RTINHERIT) &&
92 	    (flags & XFS_DIFLAG_EXTSZINHERIT) &&
93 	    value % sc->mp->m_sb.sb_rextsize > 0)
94 		xchk_ino_set_warning(sc, ino);
95 }
96 
97 /*
98  * Validate di_cowextsize hint.
99  *
100  * The rules are documented at xfs_ioctl_setattr_check_cowextsize().
101  * These functions must be kept in sync with each other.
102  */
103 STATIC void
104 xchk_inode_cowextsize(
105 	struct xfs_scrub	*sc,
106 	struct xfs_dinode	*dip,
107 	xfs_ino_t		ino,
108 	uint16_t		mode,
109 	uint16_t		flags,
110 	uint64_t		flags2)
111 {
112 	xfs_failaddr_t		fa;
113 
114 	fa = xfs_inode_validate_cowextsize(sc->mp,
115 			be32_to_cpu(dip->di_cowextsize), mode, flags,
116 			flags2);
117 	if (fa)
118 		xchk_ino_set_corrupt(sc, ino);
119 }
120 
121 /* Make sure the di_flags make sense for the inode. */
122 STATIC void
123 xchk_inode_flags(
124 	struct xfs_scrub	*sc,
125 	struct xfs_dinode	*dip,
126 	xfs_ino_t		ino,
127 	uint16_t		mode,
128 	uint16_t		flags)
129 {
130 	struct xfs_mount	*mp = sc->mp;
131 
132 	/* di_flags are all taken, last bit cannot be used */
133 	if (flags & ~XFS_DIFLAG_ANY)
134 		goto bad;
135 
136 	/* rt flags require rt device */
137 	if ((flags & XFS_DIFLAG_REALTIME) && !mp->m_rtdev_targp)
138 		goto bad;
139 
140 	/* new rt bitmap flag only valid for rbmino */
141 	if ((flags & XFS_DIFLAG_NEWRTBM) && ino != mp->m_sb.sb_rbmino)
142 		goto bad;
143 
144 	/* directory-only flags */
145 	if ((flags & (XFS_DIFLAG_RTINHERIT |
146 		     XFS_DIFLAG_EXTSZINHERIT |
147 		     XFS_DIFLAG_PROJINHERIT |
148 		     XFS_DIFLAG_NOSYMLINKS)) &&
149 	    !S_ISDIR(mode))
150 		goto bad;
151 
152 	/* file-only flags */
153 	if ((flags & (XFS_DIFLAG_REALTIME | FS_XFLAG_EXTSIZE)) &&
154 	    !S_ISREG(mode))
155 		goto bad;
156 
157 	/* filestreams and rt make no sense */
158 	if ((flags & XFS_DIFLAG_FILESTREAM) && (flags & XFS_DIFLAG_REALTIME))
159 		goto bad;
160 
161 	return;
162 bad:
163 	xchk_ino_set_corrupt(sc, ino);
164 }
165 
166 /* Make sure the di_flags2 make sense for the inode. */
167 STATIC void
168 xchk_inode_flags2(
169 	struct xfs_scrub	*sc,
170 	struct xfs_dinode	*dip,
171 	xfs_ino_t		ino,
172 	uint16_t		mode,
173 	uint16_t		flags,
174 	uint64_t		flags2)
175 {
176 	struct xfs_mount	*mp = sc->mp;
177 
178 	/* Unknown di_flags2 could be from a future kernel */
179 	if (flags2 & ~XFS_DIFLAG2_ANY)
180 		xchk_ino_set_warning(sc, ino);
181 
182 	/* reflink flag requires reflink feature */
183 	if ((flags2 & XFS_DIFLAG2_REFLINK) &&
184 	    !xfs_has_reflink(mp))
185 		goto bad;
186 
187 	/* cowextsize flag is checked w.r.t. mode separately */
188 
189 	/* file/dir-only flags */
190 	if ((flags2 & XFS_DIFLAG2_DAX) && !(S_ISREG(mode) || S_ISDIR(mode)))
191 		goto bad;
192 
193 	/* file-only flags */
194 	if ((flags2 & XFS_DIFLAG2_REFLINK) && !S_ISREG(mode))
195 		goto bad;
196 
197 	/* realtime and reflink make no sense, currently */
198 	if ((flags & XFS_DIFLAG_REALTIME) && (flags2 & XFS_DIFLAG2_REFLINK))
199 		goto bad;
200 
201 	/* no bigtime iflag without the bigtime feature */
202 	if (xfs_dinode_has_bigtime(dip) && !xfs_has_bigtime(mp))
203 		goto bad;
204 
205 	return;
206 bad:
207 	xchk_ino_set_corrupt(sc, ino);
208 }
209 
210 static inline void
211 xchk_dinode_nsec(
212 	struct xfs_scrub	*sc,
213 	xfs_ino_t		ino,
214 	struct xfs_dinode	*dip,
215 	const xfs_timestamp_t	ts)
216 {
217 	struct timespec64	tv;
218 
219 	tv = xfs_inode_from_disk_ts(dip, ts);
220 	if (tv.tv_nsec < 0 || tv.tv_nsec >= NSEC_PER_SEC)
221 		xchk_ino_set_corrupt(sc, ino);
222 }
223 
224 /* Scrub all the ondisk inode fields. */
225 STATIC void
226 xchk_dinode(
227 	struct xfs_scrub	*sc,
228 	struct xfs_dinode	*dip,
229 	xfs_ino_t		ino)
230 {
231 	struct xfs_mount	*mp = sc->mp;
232 	size_t			fork_recs;
233 	unsigned long long	isize;
234 	uint64_t		flags2;
235 	xfs_extnum_t		nextents;
236 	xfs_extnum_t		naextents;
237 	prid_t			prid;
238 	uint16_t		flags;
239 	uint16_t		mode;
240 
241 	flags = be16_to_cpu(dip->di_flags);
242 	if (dip->di_version >= 3)
243 		flags2 = be64_to_cpu(dip->di_flags2);
244 	else
245 		flags2 = 0;
246 
247 	/* di_mode */
248 	mode = be16_to_cpu(dip->di_mode);
249 	switch (mode & S_IFMT) {
250 	case S_IFLNK:
251 	case S_IFREG:
252 	case S_IFDIR:
253 	case S_IFCHR:
254 	case S_IFBLK:
255 	case S_IFIFO:
256 	case S_IFSOCK:
257 		/* mode is recognized */
258 		break;
259 	default:
260 		xchk_ino_set_corrupt(sc, ino);
261 		break;
262 	}
263 
264 	/* v1/v2 fields */
265 	switch (dip->di_version) {
266 	case 1:
267 		/*
268 		 * We autoconvert v1 inodes into v2 inodes on writeout,
269 		 * so just mark this inode for preening.
270 		 */
271 		xchk_ino_set_preen(sc, ino);
272 		prid = 0;
273 		break;
274 	case 2:
275 	case 3:
276 		if (dip->di_onlink != 0)
277 			xchk_ino_set_corrupt(sc, ino);
278 
279 		if (dip->di_mode == 0 && sc->ip)
280 			xchk_ino_set_corrupt(sc, ino);
281 
282 		if (dip->di_projid_hi != 0 &&
283 		    !xfs_has_projid32(mp))
284 			xchk_ino_set_corrupt(sc, ino);
285 
286 		prid = be16_to_cpu(dip->di_projid_lo);
287 		break;
288 	default:
289 		xchk_ino_set_corrupt(sc, ino);
290 		return;
291 	}
292 
293 	if (xfs_has_projid32(mp))
294 		prid |= (prid_t)be16_to_cpu(dip->di_projid_hi) << 16;
295 
296 	/*
297 	 * di_uid/di_gid -- -1 isn't invalid, but there's no way that
298 	 * userspace could have created that.
299 	 */
300 	if (dip->di_uid == cpu_to_be32(-1U) ||
301 	    dip->di_gid == cpu_to_be32(-1U))
302 		xchk_ino_set_warning(sc, ino);
303 
304 	/*
305 	 * project id of -1 isn't supposed to be valid, but the kernel didn't
306 	 * always validate that.
307 	 */
308 	if (prid == -1U)
309 		xchk_ino_set_warning(sc, ino);
310 
311 	/* di_format */
312 	switch (dip->di_format) {
313 	case XFS_DINODE_FMT_DEV:
314 		if (!S_ISCHR(mode) && !S_ISBLK(mode) &&
315 		    !S_ISFIFO(mode) && !S_ISSOCK(mode))
316 			xchk_ino_set_corrupt(sc, ino);
317 		break;
318 	case XFS_DINODE_FMT_LOCAL:
319 		if (!S_ISDIR(mode) && !S_ISLNK(mode))
320 			xchk_ino_set_corrupt(sc, ino);
321 		break;
322 	case XFS_DINODE_FMT_EXTENTS:
323 		if (!S_ISREG(mode) && !S_ISDIR(mode) && !S_ISLNK(mode))
324 			xchk_ino_set_corrupt(sc, ino);
325 		break;
326 	case XFS_DINODE_FMT_BTREE:
327 		if (!S_ISREG(mode) && !S_ISDIR(mode))
328 			xchk_ino_set_corrupt(sc, ino);
329 		break;
330 	case XFS_DINODE_FMT_UUID:
331 	default:
332 		xchk_ino_set_corrupt(sc, ino);
333 		break;
334 	}
335 
336 	/* di_[amc]time.nsec */
337 	xchk_dinode_nsec(sc, ino, dip, dip->di_atime);
338 	xchk_dinode_nsec(sc, ino, dip, dip->di_mtime);
339 	xchk_dinode_nsec(sc, ino, dip, dip->di_ctime);
340 
341 	/*
342 	 * di_size.  xfs_dinode_verify checks for things that screw up
343 	 * the VFS such as the upper bit being set and zero-length
344 	 * symlinks/directories, but we can do more here.
345 	 */
346 	isize = be64_to_cpu(dip->di_size);
347 	if (isize & (1ULL << 63))
348 		xchk_ino_set_corrupt(sc, ino);
349 
350 	/* Devices, fifos, and sockets must have zero size */
351 	if (!S_ISDIR(mode) && !S_ISREG(mode) && !S_ISLNK(mode) && isize != 0)
352 		xchk_ino_set_corrupt(sc, ino);
353 
354 	/* Directories can't be larger than the data section size (32G) */
355 	if (S_ISDIR(mode) && (isize == 0 || isize >= XFS_DIR2_SPACE_SIZE))
356 		xchk_ino_set_corrupt(sc, ino);
357 
358 	/* Symlinks can't be larger than SYMLINK_MAXLEN */
359 	if (S_ISLNK(mode) && (isize == 0 || isize >= XFS_SYMLINK_MAXLEN))
360 		xchk_ino_set_corrupt(sc, ino);
361 
362 	/*
363 	 * Warn if the running kernel can't handle the kinds of offsets
364 	 * needed to deal with the file size.  In other words, if the
365 	 * pagecache can't cache all the blocks in this file due to
366 	 * overly large offsets, flag the inode for admin review.
367 	 */
368 	if (isize > mp->m_super->s_maxbytes)
369 		xchk_ino_set_warning(sc, ino);
370 
371 	/* di_nblocks */
372 	if (flags2 & XFS_DIFLAG2_REFLINK) {
373 		; /* nblocks can exceed dblocks */
374 	} else if (flags & XFS_DIFLAG_REALTIME) {
375 		/*
376 		 * nblocks is the sum of data extents (in the rtdev),
377 		 * attr extents (in the datadev), and both forks' bmbt
378 		 * blocks (in the datadev).  This clumsy check is the
379 		 * best we can do without cross-referencing with the
380 		 * inode forks.
381 		 */
382 		if (be64_to_cpu(dip->di_nblocks) >=
383 		    mp->m_sb.sb_dblocks + mp->m_sb.sb_rblocks)
384 			xchk_ino_set_corrupt(sc, ino);
385 	} else {
386 		if (be64_to_cpu(dip->di_nblocks) >= mp->m_sb.sb_dblocks)
387 			xchk_ino_set_corrupt(sc, ino);
388 	}
389 
390 	xchk_inode_flags(sc, dip, ino, mode, flags);
391 
392 	xchk_inode_extsize(sc, dip, ino, mode, flags);
393 
394 	nextents = xfs_dfork_data_extents(dip);
395 	naextents = xfs_dfork_attr_extents(dip);
396 
397 	/* di_nextents */
398 	fork_recs =  XFS_DFORK_DSIZE(dip, mp) / sizeof(struct xfs_bmbt_rec);
399 	switch (dip->di_format) {
400 	case XFS_DINODE_FMT_EXTENTS:
401 		if (nextents > fork_recs)
402 			xchk_ino_set_corrupt(sc, ino);
403 		break;
404 	case XFS_DINODE_FMT_BTREE:
405 		if (nextents <= fork_recs)
406 			xchk_ino_set_corrupt(sc, ino);
407 		break;
408 	default:
409 		if (nextents != 0)
410 			xchk_ino_set_corrupt(sc, ino);
411 		break;
412 	}
413 
414 	/* di_forkoff */
415 	if (XFS_DFORK_APTR(dip) >= (char *)dip + mp->m_sb.sb_inodesize)
416 		xchk_ino_set_corrupt(sc, ino);
417 	if (naextents != 0 && dip->di_forkoff == 0)
418 		xchk_ino_set_corrupt(sc, ino);
419 	if (dip->di_forkoff == 0 && dip->di_aformat != XFS_DINODE_FMT_EXTENTS)
420 		xchk_ino_set_corrupt(sc, ino);
421 
422 	/* di_aformat */
423 	if (dip->di_aformat != XFS_DINODE_FMT_LOCAL &&
424 	    dip->di_aformat != XFS_DINODE_FMT_EXTENTS &&
425 	    dip->di_aformat != XFS_DINODE_FMT_BTREE)
426 		xchk_ino_set_corrupt(sc, ino);
427 
428 	/* di_anextents */
429 	fork_recs =  XFS_DFORK_ASIZE(dip, mp) / sizeof(struct xfs_bmbt_rec);
430 	switch (dip->di_aformat) {
431 	case XFS_DINODE_FMT_EXTENTS:
432 		if (naextents > fork_recs)
433 			xchk_ino_set_corrupt(sc, ino);
434 		break;
435 	case XFS_DINODE_FMT_BTREE:
436 		if (naextents <= fork_recs)
437 			xchk_ino_set_corrupt(sc, ino);
438 		break;
439 	default:
440 		if (naextents != 0)
441 			xchk_ino_set_corrupt(sc, ino);
442 	}
443 
444 	if (dip->di_version >= 3) {
445 		xchk_dinode_nsec(sc, ino, dip, dip->di_crtime);
446 		xchk_inode_flags2(sc, dip, ino, mode, flags, flags2);
447 		xchk_inode_cowextsize(sc, dip, ino, mode, flags,
448 				flags2);
449 	}
450 }
451 
452 /*
453  * Make sure the finobt doesn't think this inode is free.
454  * We don't have to check the inobt ourselves because we got the inode via
455  * IGET_UNTRUSTED, which checks the inobt for us.
456  */
457 static void
458 xchk_inode_xref_finobt(
459 	struct xfs_scrub		*sc,
460 	xfs_ino_t			ino)
461 {
462 	struct xfs_inobt_rec_incore	rec;
463 	xfs_agino_t			agino;
464 	int				has_record;
465 	int				error;
466 
467 	if (!sc->sa.fino_cur || xchk_skip_xref(sc->sm))
468 		return;
469 
470 	agino = XFS_INO_TO_AGINO(sc->mp, ino);
471 
472 	/*
473 	 * Try to get the finobt record.  If we can't get it, then we're
474 	 * in good shape.
475 	 */
476 	error = xfs_inobt_lookup(sc->sa.fino_cur, agino, XFS_LOOKUP_LE,
477 			&has_record);
478 	if (!xchk_should_check_xref(sc, &error, &sc->sa.fino_cur) ||
479 	    !has_record)
480 		return;
481 
482 	error = xfs_inobt_get_rec(sc->sa.fino_cur, &rec, &has_record);
483 	if (!xchk_should_check_xref(sc, &error, &sc->sa.fino_cur) ||
484 	    !has_record)
485 		return;
486 
487 	/*
488 	 * Otherwise, make sure this record either doesn't cover this inode,
489 	 * or that it does but it's marked present.
490 	 */
491 	if (rec.ir_startino > agino ||
492 	    rec.ir_startino + XFS_INODES_PER_CHUNK <= agino)
493 		return;
494 
495 	if (rec.ir_free & XFS_INOBT_MASK(agino - rec.ir_startino))
496 		xchk_btree_xref_set_corrupt(sc, sc->sa.fino_cur, 0);
497 }
498 
499 /* Cross reference the inode fields with the forks. */
500 STATIC void
501 xchk_inode_xref_bmap(
502 	struct xfs_scrub	*sc,
503 	struct xfs_dinode	*dip)
504 {
505 	xfs_extnum_t		nextents;
506 	xfs_filblks_t		count;
507 	xfs_filblks_t		acount;
508 	int			error;
509 
510 	if (xchk_skip_xref(sc->sm))
511 		return;
512 
513 	/* Walk all the extents to check nextents/naextents/nblocks. */
514 	error = xfs_bmap_count_blocks(sc->tp, sc->ip, XFS_DATA_FORK,
515 			&nextents, &count);
516 	if (!xchk_should_check_xref(sc, &error, NULL))
517 		return;
518 	if (nextents < xfs_dfork_data_extents(dip))
519 		xchk_ino_xref_set_corrupt(sc, sc->ip->i_ino);
520 
521 	error = xfs_bmap_count_blocks(sc->tp, sc->ip, XFS_ATTR_FORK,
522 			&nextents, &acount);
523 	if (!xchk_should_check_xref(sc, &error, NULL))
524 		return;
525 	if (nextents != xfs_dfork_attr_extents(dip))
526 		xchk_ino_xref_set_corrupt(sc, sc->ip->i_ino);
527 
528 	/* Check nblocks against the inode. */
529 	if (count + acount != be64_to_cpu(dip->di_nblocks))
530 		xchk_ino_xref_set_corrupt(sc, sc->ip->i_ino);
531 }
532 
533 /* Cross-reference with the other btrees. */
534 STATIC void
535 xchk_inode_xref(
536 	struct xfs_scrub	*sc,
537 	xfs_ino_t		ino,
538 	struct xfs_dinode	*dip)
539 {
540 	xfs_agnumber_t		agno;
541 	xfs_agblock_t		agbno;
542 	int			error;
543 
544 	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
545 		return;
546 
547 	agno = XFS_INO_TO_AGNO(sc->mp, ino);
548 	agbno = XFS_INO_TO_AGBNO(sc->mp, ino);
549 
550 	error = xchk_ag_init_existing(sc, agno, &sc->sa);
551 	if (!xchk_xref_process_error(sc, agno, agbno, &error))
552 		goto out_free;
553 
554 	xchk_xref_is_used_space(sc, agbno, 1);
555 	xchk_inode_xref_finobt(sc, ino);
556 	xchk_xref_is_owned_by(sc, agbno, 1, &XFS_RMAP_OINFO_INODES);
557 	xchk_xref_is_not_shared(sc, agbno, 1);
558 	xchk_inode_xref_bmap(sc, dip);
559 
560 out_free:
561 	xchk_ag_free(sc, &sc->sa);
562 }
563 
564 /*
565  * If the reflink iflag disagrees with a scan for shared data fork extents,
566  * either flag an error (shared extents w/ no flag) or a preen (flag set w/o
567  * any shared extents).  We already checked for reflink iflag set on a non
568  * reflink filesystem.
569  */
570 static void
571 xchk_inode_check_reflink_iflag(
572 	struct xfs_scrub	*sc,
573 	xfs_ino_t		ino)
574 {
575 	struct xfs_mount	*mp = sc->mp;
576 	bool			has_shared;
577 	int			error;
578 
579 	if (!xfs_has_reflink(mp))
580 		return;
581 
582 	error = xfs_reflink_inode_has_shared_extents(sc->tp, sc->ip,
583 			&has_shared);
584 	if (!xchk_xref_process_error(sc, XFS_INO_TO_AGNO(mp, ino),
585 			XFS_INO_TO_AGBNO(mp, ino), &error))
586 		return;
587 	if (xfs_is_reflink_inode(sc->ip) && !has_shared)
588 		xchk_ino_set_preen(sc, ino);
589 	else if (!xfs_is_reflink_inode(sc->ip) && has_shared)
590 		xchk_ino_set_corrupt(sc, ino);
591 }
592 
593 /* Scrub an inode. */
594 int
595 xchk_inode(
596 	struct xfs_scrub	*sc)
597 {
598 	struct xfs_dinode	di;
599 	int			error = 0;
600 
601 	/*
602 	 * If sc->ip is NULL, that means that the setup function called
603 	 * xfs_iget to look up the inode.  xfs_iget returned a EFSCORRUPTED
604 	 * and a NULL inode, so flag the corruption error and return.
605 	 */
606 	if (!sc->ip) {
607 		xchk_ino_set_corrupt(sc, sc->sm->sm_ino);
608 		return 0;
609 	}
610 
611 	/* Scrub the inode core. */
612 	xfs_inode_to_disk(sc->ip, &di, 0);
613 	xchk_dinode(sc, &di, sc->ip->i_ino);
614 	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
615 		goto out;
616 
617 	/*
618 	 * Look for discrepancies between file's data blocks and the reflink
619 	 * iflag.  We already checked the iflag against the file mode when
620 	 * we scrubbed the dinode.
621 	 */
622 	if (S_ISREG(VFS_I(sc->ip)->i_mode))
623 		xchk_inode_check_reflink_iflag(sc, sc->ip->i_ino);
624 
625 	xchk_inode_xref(sc, sc->ip->i_ino, &di);
626 out:
627 	return error;
628 }
629