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1/*
2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#include "xfs.h"
19#include "xfs_format.h"
20#include "xfs_fs.h"
21#include "xfs_log_format.h"
22#include "xfs_trans_resv.h"
23#include "xfs_mount.h"
24#include "xfs_error.h"
25
26#ifdef DEBUG
27
28int xfs_etest[XFS_NUM_INJECT_ERROR];
29int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR];
30char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR];
31int xfs_error_test_active;
32
33int
34xfs_error_test(int error_tag, int *fsidp, char *expression,
35 int line, char *file, unsigned long randfactor)
36{
37 int i;
38 int64_t fsid;
39
40 if (prandom_u32() % randfactor)
41 return 0;
42
43 memcpy(&fsid, fsidp, sizeof(xfs_fsid_t));
44
45 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
46 if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) {
47 xfs_warn(NULL,
48 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
49 expression, file, line, xfs_etest_fsname[i]);
50 return 1;
51 }
52 }
53
54 return 0;
55}
56
57int
58xfs_errortag_add(unsigned int error_tag, xfs_mount_t *mp)
59{
60 int i;
61 int len;
62 int64_t fsid;
63
64 if (error_tag >= XFS_ERRTAG_MAX)
65 return -EINVAL;
66
67 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
68
69 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
70 if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) {
71 xfs_warn(mp, "error tag #%d on", error_tag);
72 return 0;
73 }
74 }
75
76 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
77 if (xfs_etest[i] == 0) {
78 xfs_warn(mp, "Turned on XFS error tag #%d",
79 error_tag);
80 xfs_etest[i] = error_tag;
81 xfs_etest_fsid[i] = fsid;
82 len = strlen(mp->m_fsname);
83 xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP);
84 strcpy(xfs_etest_fsname[i], mp->m_fsname);
85 xfs_error_test_active++;
86 return 0;
87 }
88 }
89
90 xfs_warn(mp, "error tag overflow, too many turned on");
91
92 return 1;
93}
94
95int
96xfs_errortag_clearall(xfs_mount_t *mp, int loud)
97{
98 int64_t fsid;
99 int cleared = 0;
100 int i;
101
102 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
103
104
105 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
106 if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
107 xfs_etest[i] != 0) {
108 cleared = 1;
109 xfs_warn(mp, "Clearing XFS error tag #%d",
110 xfs_etest[i]);
111 xfs_etest[i] = 0;
112 xfs_etest_fsid[i] = 0LL;
113 kmem_free(xfs_etest_fsname[i]);
114 xfs_etest_fsname[i] = NULL;
115 xfs_error_test_active--;
116 }
117 }
118
119 if (loud || cleared)
120 xfs_warn(mp, "Cleared all XFS error tags for filesystem");
121
122 return 0;
123}
124#endif /* DEBUG */
125
126void
127xfs_error_report(
128 const char *tag,
129 int level,
130 struct xfs_mount *mp,
131 const char *filename,
132 int linenum,
133 void *ra)
134{
135 if (level <= xfs_error_level) {
136 xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
137 "Internal error %s at line %d of file %s. Caller %pS",
138 tag, linenum, filename, ra);
139
140 xfs_stack_trace();
141 }
142}
143
144void
145xfs_corruption_error(
146 const char *tag,
147 int level,
148 struct xfs_mount *mp,
149 void *p,
150 const char *filename,
151 int linenum,
152 void *ra)
153{
154 if (level <= xfs_error_level)
155 xfs_hex_dump(p, 64);
156 xfs_error_report(tag, level, mp, filename, linenum, ra);
157 xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
158}
159
160/*
161 * Warnings specifically for verifier errors. Differentiate CRC vs. invalid
162 * values, and omit the stack trace unless the error level is tuned high.
163 */
164void
165xfs_verifier_error(
166 struct xfs_buf *bp)
167{
168 struct xfs_mount *mp = bp->b_target->bt_mount;
169
170 xfs_alert(mp, "Metadata %s detected at %pF, %s block 0x%llx",
171 bp->b_error == -EFSBADCRC ? "CRC error" : "corruption",
172 __return_address, bp->b_ops->name, bp->b_bn);
173
174 xfs_alert(mp, "Unmount and run xfs_repair");
175
176 if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
177 xfs_alert(mp, "First 64 bytes of corrupted metadata buffer:");
178 xfs_hex_dump(xfs_buf_offset(bp, 0), 64);
179 }
180
181 if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
182 xfs_stack_trace();
183}
1/*
2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#include "xfs.h"
19#include "xfs_format.h"
20#include "xfs_fs.h"
21#include "xfs_log_format.h"
22#include "xfs_trans_resv.h"
23#include "xfs_mount.h"
24#include "xfs_errortag.h"
25#include "xfs_error.h"
26#include "xfs_sysfs.h"
27#include "xfs_inode.h"
28
29#ifdef DEBUG
30
31static unsigned int xfs_errortag_random_default[] = {
32 XFS_RANDOM_DEFAULT,
33 XFS_RANDOM_IFLUSH_1,
34 XFS_RANDOM_IFLUSH_2,
35 XFS_RANDOM_IFLUSH_3,
36 XFS_RANDOM_IFLUSH_4,
37 XFS_RANDOM_IFLUSH_5,
38 XFS_RANDOM_IFLUSH_6,
39 XFS_RANDOM_DA_READ_BUF,
40 XFS_RANDOM_BTREE_CHECK_LBLOCK,
41 XFS_RANDOM_BTREE_CHECK_SBLOCK,
42 XFS_RANDOM_ALLOC_READ_AGF,
43 XFS_RANDOM_IALLOC_READ_AGI,
44 XFS_RANDOM_ITOBP_INOTOBP,
45 XFS_RANDOM_IUNLINK,
46 XFS_RANDOM_IUNLINK_REMOVE,
47 XFS_RANDOM_DIR_INO_VALIDATE,
48 XFS_RANDOM_BULKSTAT_READ_CHUNK,
49 XFS_RANDOM_IODONE_IOERR,
50 XFS_RANDOM_STRATREAD_IOERR,
51 XFS_RANDOM_STRATCMPL_IOERR,
52 XFS_RANDOM_DIOWRITE_IOERR,
53 XFS_RANDOM_BMAPIFORMAT,
54 XFS_RANDOM_FREE_EXTENT,
55 XFS_RANDOM_RMAP_FINISH_ONE,
56 XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE,
57 XFS_RANDOM_REFCOUNT_FINISH_ONE,
58 XFS_RANDOM_BMAP_FINISH_ONE,
59 XFS_RANDOM_AG_RESV_CRITICAL,
60 XFS_RANDOM_DROP_WRITES,
61 XFS_RANDOM_LOG_BAD_CRC,
62 XFS_RANDOM_LOG_ITEM_PIN,
63 XFS_RANDOM_BUF_LRU_REF,
64};
65
66struct xfs_errortag_attr {
67 struct attribute attr;
68 unsigned int tag;
69};
70
71static inline struct xfs_errortag_attr *
72to_attr(struct attribute *attr)
73{
74 return container_of(attr, struct xfs_errortag_attr, attr);
75}
76
77static inline struct xfs_mount *
78to_mp(struct kobject *kobject)
79{
80 struct xfs_kobj *kobj = to_kobj(kobject);
81
82 return container_of(kobj, struct xfs_mount, m_errortag_kobj);
83}
84
85STATIC ssize_t
86xfs_errortag_attr_store(
87 struct kobject *kobject,
88 struct attribute *attr,
89 const char *buf,
90 size_t count)
91{
92 struct xfs_mount *mp = to_mp(kobject);
93 struct xfs_errortag_attr *xfs_attr = to_attr(attr);
94 int ret;
95 unsigned int val;
96
97 if (strcmp(buf, "default") == 0) {
98 val = xfs_errortag_random_default[xfs_attr->tag];
99 } else {
100 ret = kstrtouint(buf, 0, &val);
101 if (ret)
102 return ret;
103 }
104
105 ret = xfs_errortag_set(mp, xfs_attr->tag, val);
106 if (ret)
107 return ret;
108 return count;
109}
110
111STATIC ssize_t
112xfs_errortag_attr_show(
113 struct kobject *kobject,
114 struct attribute *attr,
115 char *buf)
116{
117 struct xfs_mount *mp = to_mp(kobject);
118 struct xfs_errortag_attr *xfs_attr = to_attr(attr);
119
120 return snprintf(buf, PAGE_SIZE, "%u\n",
121 xfs_errortag_get(mp, xfs_attr->tag));
122}
123
124static const struct sysfs_ops xfs_errortag_sysfs_ops = {
125 .show = xfs_errortag_attr_show,
126 .store = xfs_errortag_attr_store,
127};
128
129#define XFS_ERRORTAG_ATTR_RW(_name, _tag) \
130static struct xfs_errortag_attr xfs_errortag_attr_##_name = { \
131 .attr = {.name = __stringify(_name), \
132 .mode = VERIFY_OCTAL_PERMISSIONS(S_IWUSR | S_IRUGO) }, \
133 .tag = (_tag), \
134}
135
136#define XFS_ERRORTAG_ATTR_LIST(_name) &xfs_errortag_attr_##_name.attr
137
138XFS_ERRORTAG_ATTR_RW(noerror, XFS_ERRTAG_NOERROR);
139XFS_ERRORTAG_ATTR_RW(iflush1, XFS_ERRTAG_IFLUSH_1);
140XFS_ERRORTAG_ATTR_RW(iflush2, XFS_ERRTAG_IFLUSH_2);
141XFS_ERRORTAG_ATTR_RW(iflush3, XFS_ERRTAG_IFLUSH_3);
142XFS_ERRORTAG_ATTR_RW(iflush4, XFS_ERRTAG_IFLUSH_4);
143XFS_ERRORTAG_ATTR_RW(iflush5, XFS_ERRTAG_IFLUSH_5);
144XFS_ERRORTAG_ATTR_RW(iflush6, XFS_ERRTAG_IFLUSH_6);
145XFS_ERRORTAG_ATTR_RW(dareadbuf, XFS_ERRTAG_DA_READ_BUF);
146XFS_ERRORTAG_ATTR_RW(btree_chk_lblk, XFS_ERRTAG_BTREE_CHECK_LBLOCK);
147XFS_ERRORTAG_ATTR_RW(btree_chk_sblk, XFS_ERRTAG_BTREE_CHECK_SBLOCK);
148XFS_ERRORTAG_ATTR_RW(readagf, XFS_ERRTAG_ALLOC_READ_AGF);
149XFS_ERRORTAG_ATTR_RW(readagi, XFS_ERRTAG_IALLOC_READ_AGI);
150XFS_ERRORTAG_ATTR_RW(itobp, XFS_ERRTAG_ITOBP_INOTOBP);
151XFS_ERRORTAG_ATTR_RW(iunlink, XFS_ERRTAG_IUNLINK);
152XFS_ERRORTAG_ATTR_RW(iunlinkrm, XFS_ERRTAG_IUNLINK_REMOVE);
153XFS_ERRORTAG_ATTR_RW(dirinovalid, XFS_ERRTAG_DIR_INO_VALIDATE);
154XFS_ERRORTAG_ATTR_RW(bulkstat, XFS_ERRTAG_BULKSTAT_READ_CHUNK);
155XFS_ERRORTAG_ATTR_RW(logiodone, XFS_ERRTAG_IODONE_IOERR);
156XFS_ERRORTAG_ATTR_RW(stratread, XFS_ERRTAG_STRATREAD_IOERR);
157XFS_ERRORTAG_ATTR_RW(stratcmpl, XFS_ERRTAG_STRATCMPL_IOERR);
158XFS_ERRORTAG_ATTR_RW(diowrite, XFS_ERRTAG_DIOWRITE_IOERR);
159XFS_ERRORTAG_ATTR_RW(bmapifmt, XFS_ERRTAG_BMAPIFORMAT);
160XFS_ERRORTAG_ATTR_RW(free_extent, XFS_ERRTAG_FREE_EXTENT);
161XFS_ERRORTAG_ATTR_RW(rmap_finish_one, XFS_ERRTAG_RMAP_FINISH_ONE);
162XFS_ERRORTAG_ATTR_RW(refcount_continue_update, XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE);
163XFS_ERRORTAG_ATTR_RW(refcount_finish_one, XFS_ERRTAG_REFCOUNT_FINISH_ONE);
164XFS_ERRORTAG_ATTR_RW(bmap_finish_one, XFS_ERRTAG_BMAP_FINISH_ONE);
165XFS_ERRORTAG_ATTR_RW(ag_resv_critical, XFS_ERRTAG_AG_RESV_CRITICAL);
166XFS_ERRORTAG_ATTR_RW(drop_writes, XFS_ERRTAG_DROP_WRITES);
167XFS_ERRORTAG_ATTR_RW(log_bad_crc, XFS_ERRTAG_LOG_BAD_CRC);
168XFS_ERRORTAG_ATTR_RW(log_item_pin, XFS_ERRTAG_LOG_ITEM_PIN);
169XFS_ERRORTAG_ATTR_RW(buf_lru_ref, XFS_ERRTAG_BUF_LRU_REF);
170
171static struct attribute *xfs_errortag_attrs[] = {
172 XFS_ERRORTAG_ATTR_LIST(noerror),
173 XFS_ERRORTAG_ATTR_LIST(iflush1),
174 XFS_ERRORTAG_ATTR_LIST(iflush2),
175 XFS_ERRORTAG_ATTR_LIST(iflush3),
176 XFS_ERRORTAG_ATTR_LIST(iflush4),
177 XFS_ERRORTAG_ATTR_LIST(iflush5),
178 XFS_ERRORTAG_ATTR_LIST(iflush6),
179 XFS_ERRORTAG_ATTR_LIST(dareadbuf),
180 XFS_ERRORTAG_ATTR_LIST(btree_chk_lblk),
181 XFS_ERRORTAG_ATTR_LIST(btree_chk_sblk),
182 XFS_ERRORTAG_ATTR_LIST(readagf),
183 XFS_ERRORTAG_ATTR_LIST(readagi),
184 XFS_ERRORTAG_ATTR_LIST(itobp),
185 XFS_ERRORTAG_ATTR_LIST(iunlink),
186 XFS_ERRORTAG_ATTR_LIST(iunlinkrm),
187 XFS_ERRORTAG_ATTR_LIST(dirinovalid),
188 XFS_ERRORTAG_ATTR_LIST(bulkstat),
189 XFS_ERRORTAG_ATTR_LIST(logiodone),
190 XFS_ERRORTAG_ATTR_LIST(stratread),
191 XFS_ERRORTAG_ATTR_LIST(stratcmpl),
192 XFS_ERRORTAG_ATTR_LIST(diowrite),
193 XFS_ERRORTAG_ATTR_LIST(bmapifmt),
194 XFS_ERRORTAG_ATTR_LIST(free_extent),
195 XFS_ERRORTAG_ATTR_LIST(rmap_finish_one),
196 XFS_ERRORTAG_ATTR_LIST(refcount_continue_update),
197 XFS_ERRORTAG_ATTR_LIST(refcount_finish_one),
198 XFS_ERRORTAG_ATTR_LIST(bmap_finish_one),
199 XFS_ERRORTAG_ATTR_LIST(ag_resv_critical),
200 XFS_ERRORTAG_ATTR_LIST(drop_writes),
201 XFS_ERRORTAG_ATTR_LIST(log_bad_crc),
202 XFS_ERRORTAG_ATTR_LIST(log_item_pin),
203 XFS_ERRORTAG_ATTR_LIST(buf_lru_ref),
204 NULL,
205};
206
207static struct kobj_type xfs_errortag_ktype = {
208 .release = xfs_sysfs_release,
209 .sysfs_ops = &xfs_errortag_sysfs_ops,
210 .default_attrs = xfs_errortag_attrs,
211};
212
213int
214xfs_errortag_init(
215 struct xfs_mount *mp)
216{
217 mp->m_errortag = kmem_zalloc(sizeof(unsigned int) * XFS_ERRTAG_MAX,
218 KM_SLEEP | KM_MAYFAIL);
219 if (!mp->m_errortag)
220 return -ENOMEM;
221
222 return xfs_sysfs_init(&mp->m_errortag_kobj, &xfs_errortag_ktype,
223 &mp->m_kobj, "errortag");
224}
225
226void
227xfs_errortag_del(
228 struct xfs_mount *mp)
229{
230 xfs_sysfs_del(&mp->m_errortag_kobj);
231 kmem_free(mp->m_errortag);
232}
233
234bool
235xfs_errortag_test(
236 struct xfs_mount *mp,
237 const char *expression,
238 const char *file,
239 int line,
240 unsigned int error_tag)
241{
242 unsigned int randfactor;
243
244 /*
245 * To be able to use error injection anywhere, we need to ensure error
246 * injection mechanism is already initialized.
247 *
248 * Code paths like I/O completion can be called before the
249 * initialization is complete, but be able to inject errors in such
250 * places is still useful.
251 */
252 if (!mp->m_errortag)
253 return false;
254
255 ASSERT(error_tag < XFS_ERRTAG_MAX);
256 randfactor = mp->m_errortag[error_tag];
257 if (!randfactor || prandom_u32() % randfactor)
258 return false;
259
260 xfs_warn_ratelimited(mp,
261"Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
262 expression, file, line, mp->m_fsname);
263 return true;
264}
265
266int
267xfs_errortag_get(
268 struct xfs_mount *mp,
269 unsigned int error_tag)
270{
271 if (error_tag >= XFS_ERRTAG_MAX)
272 return -EINVAL;
273
274 return mp->m_errortag[error_tag];
275}
276
277int
278xfs_errortag_set(
279 struct xfs_mount *mp,
280 unsigned int error_tag,
281 unsigned int tag_value)
282{
283 if (error_tag >= XFS_ERRTAG_MAX)
284 return -EINVAL;
285
286 mp->m_errortag[error_tag] = tag_value;
287 return 0;
288}
289
290int
291xfs_errortag_add(
292 struct xfs_mount *mp,
293 unsigned int error_tag)
294{
295 if (error_tag >= XFS_ERRTAG_MAX)
296 return -EINVAL;
297
298 return xfs_errortag_set(mp, error_tag,
299 xfs_errortag_random_default[error_tag]);
300}
301
302int
303xfs_errortag_clearall(
304 struct xfs_mount *mp)
305{
306 memset(mp->m_errortag, 0, sizeof(unsigned int) * XFS_ERRTAG_MAX);
307 return 0;
308}
309#endif /* DEBUG */
310
311void
312xfs_error_report(
313 const char *tag,
314 int level,
315 struct xfs_mount *mp,
316 const char *filename,
317 int linenum,
318 xfs_failaddr_t failaddr)
319{
320 if (level <= xfs_error_level) {
321 xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
322 "Internal error %s at line %d of file %s. Caller %pS",
323 tag, linenum, filename, failaddr);
324
325 xfs_stack_trace();
326 }
327}
328
329void
330xfs_corruption_error(
331 const char *tag,
332 int level,
333 struct xfs_mount *mp,
334 void *p,
335 const char *filename,
336 int linenum,
337 xfs_failaddr_t failaddr)
338{
339 if (level <= xfs_error_level)
340 xfs_hex_dump(p, XFS_CORRUPTION_DUMP_LEN);
341 xfs_error_report(tag, level, mp, filename, linenum, failaddr);
342 xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
343}
344
345/*
346 * Warnings specifically for verifier errors. Differentiate CRC vs. invalid
347 * values, and omit the stack trace unless the error level is tuned high.
348 */
349void
350xfs_buf_verifier_error(
351 struct xfs_buf *bp,
352 int error,
353 const char *name,
354 void *buf,
355 size_t bufsz,
356 xfs_failaddr_t failaddr)
357{
358 struct xfs_mount *mp = bp->b_target->bt_mount;
359 xfs_failaddr_t fa;
360 int sz;
361
362 fa = failaddr ? failaddr : __return_address;
363 __xfs_buf_ioerror(bp, error, fa);
364
365 xfs_alert(mp, "Metadata %s detected at %pS, %s block 0x%llx %s",
366 bp->b_error == -EFSBADCRC ? "CRC error" : "corruption",
367 fa, bp->b_ops->name, bp->b_bn, name);
368
369 xfs_alert(mp, "Unmount and run xfs_repair");
370
371 if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
372 sz = min_t(size_t, XFS_CORRUPTION_DUMP_LEN, bufsz);
373 xfs_alert(mp, "First %d bytes of corrupted metadata buffer:",
374 sz);
375 xfs_hex_dump(buf, sz);
376 }
377
378 if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
379 xfs_stack_trace();
380}
381
382/*
383 * Warnings specifically for verifier errors. Differentiate CRC vs. invalid
384 * values, and omit the stack trace unless the error level is tuned high.
385 */
386void
387xfs_verifier_error(
388 struct xfs_buf *bp,
389 int error,
390 xfs_failaddr_t failaddr)
391{
392 return xfs_buf_verifier_error(bp, error, "", xfs_buf_offset(bp, 0),
393 XFS_CORRUPTION_DUMP_LEN, failaddr);
394}
395
396/*
397 * Warnings for inode corruption problems. Don't bother with the stack
398 * trace unless the error level is turned up high.
399 */
400void
401xfs_inode_verifier_error(
402 struct xfs_inode *ip,
403 int error,
404 const char *name,
405 void *buf,
406 size_t bufsz,
407 xfs_failaddr_t failaddr)
408{
409 struct xfs_mount *mp = ip->i_mount;
410 xfs_failaddr_t fa;
411 int sz;
412
413 fa = failaddr ? failaddr : __return_address;
414
415 xfs_alert(mp, "Metadata %s detected at %pS, inode 0x%llx %s",
416 error == -EFSBADCRC ? "CRC error" : "corruption",
417 fa, ip->i_ino, name);
418
419 xfs_alert(mp, "Unmount and run xfs_repair");
420
421 if (buf && xfs_error_level >= XFS_ERRLEVEL_LOW) {
422 sz = min_t(size_t, XFS_CORRUPTION_DUMP_LEN, bufsz);
423 xfs_alert(mp, "First %d bytes of corrupted metadata buffer:",
424 sz);
425 xfs_hex_dump(buf, sz);
426 }
427
428 if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
429 xfs_stack_trace();
430}