1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
7 #include "xfs_shared.h"
8 #include "xfs_format.h"
10 #include "xfs_log_format.h"
11 #include "xfs_trans_resv.h"
12 #include "xfs_mount.h"
13 #include "xfs_errortag.h"
14 #include "xfs_error.h"
15 #include "xfs_sysfs.h"
16 #include "xfs_inode.h"
20 static unsigned int xfs_errortag_random_default[] = {
28 XFS_RANDOM_DA_READ_BUF,
29 XFS_RANDOM_BTREE_CHECK_LBLOCK,
30 XFS_RANDOM_BTREE_CHECK_SBLOCK,
31 XFS_RANDOM_ALLOC_READ_AGF,
32 XFS_RANDOM_IALLOC_READ_AGI,
33 XFS_RANDOM_ITOBP_INOTOBP,
35 XFS_RANDOM_IUNLINK_REMOVE,
36 XFS_RANDOM_DIR_INO_VALIDATE,
37 XFS_RANDOM_BULKSTAT_READ_CHUNK,
38 XFS_RANDOM_IODONE_IOERR,
39 XFS_RANDOM_STRATREAD_IOERR,
40 XFS_RANDOM_STRATCMPL_IOERR,
41 XFS_RANDOM_DIOWRITE_IOERR,
42 XFS_RANDOM_BMAPIFORMAT,
43 XFS_RANDOM_FREE_EXTENT,
44 XFS_RANDOM_RMAP_FINISH_ONE,
45 XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE,
46 XFS_RANDOM_REFCOUNT_FINISH_ONE,
47 XFS_RANDOM_BMAP_FINISH_ONE,
48 XFS_RANDOM_AG_RESV_CRITICAL,
49 XFS_RANDOM_DROP_WRITES,
50 XFS_RANDOM_LOG_BAD_CRC,
51 XFS_RANDOM_LOG_ITEM_PIN,
52 XFS_RANDOM_BUF_LRU_REF,
53 XFS_RANDOM_FORCE_SCRUB_REPAIR,
54 XFS_RANDOM_FORCE_SUMMARY_RECALC,
55 XFS_RANDOM_IUNLINK_FALLBACK,
58 struct xfs_errortag_attr {
59 struct attribute attr;
63 static inline struct xfs_errortag_attr *
64 to_attr(struct attribute *attr)
66 return container_of(attr, struct xfs_errortag_attr, attr);
69 static inline struct xfs_mount *
70 to_mp(struct kobject *kobject)
72 struct xfs_kobj *kobj = to_kobj(kobject);
74 return container_of(kobj, struct xfs_mount, m_errortag_kobj);
78 xfs_errortag_attr_store(
79 struct kobject *kobject,
80 struct attribute *attr,
84 struct xfs_mount *mp = to_mp(kobject);
85 struct xfs_errortag_attr *xfs_attr = to_attr(attr);
89 if (strcmp(buf, "default") == 0) {
90 val = xfs_errortag_random_default[xfs_attr->tag];
92 ret = kstrtouint(buf, 0, &val);
97 ret = xfs_errortag_set(mp, xfs_attr->tag, val);
104 xfs_errortag_attr_show(
105 struct kobject *kobject,
106 struct attribute *attr,
109 struct xfs_mount *mp = to_mp(kobject);
110 struct xfs_errortag_attr *xfs_attr = to_attr(attr);
112 return snprintf(buf, PAGE_SIZE, "%u\n",
113 xfs_errortag_get(mp, xfs_attr->tag));
116 static const struct sysfs_ops xfs_errortag_sysfs_ops = {
117 .show = xfs_errortag_attr_show,
118 .store = xfs_errortag_attr_store,
121 #define XFS_ERRORTAG_ATTR_RW(_name, _tag) \
122 static struct xfs_errortag_attr xfs_errortag_attr_##_name = { \
123 .attr = {.name = __stringify(_name), \
124 .mode = VERIFY_OCTAL_PERMISSIONS(S_IWUSR | S_IRUGO) }, \
128 #define XFS_ERRORTAG_ATTR_LIST(_name) &xfs_errortag_attr_##_name.attr
130 XFS_ERRORTAG_ATTR_RW(noerror, XFS_ERRTAG_NOERROR);
131 XFS_ERRORTAG_ATTR_RW(iflush1, XFS_ERRTAG_IFLUSH_1);
132 XFS_ERRORTAG_ATTR_RW(iflush2, XFS_ERRTAG_IFLUSH_2);
133 XFS_ERRORTAG_ATTR_RW(iflush3, XFS_ERRTAG_IFLUSH_3);
134 XFS_ERRORTAG_ATTR_RW(iflush4, XFS_ERRTAG_IFLUSH_4);
135 XFS_ERRORTAG_ATTR_RW(iflush5, XFS_ERRTAG_IFLUSH_5);
136 XFS_ERRORTAG_ATTR_RW(iflush6, XFS_ERRTAG_IFLUSH_6);
137 XFS_ERRORTAG_ATTR_RW(dareadbuf, XFS_ERRTAG_DA_READ_BUF);
138 XFS_ERRORTAG_ATTR_RW(btree_chk_lblk, XFS_ERRTAG_BTREE_CHECK_LBLOCK);
139 XFS_ERRORTAG_ATTR_RW(btree_chk_sblk, XFS_ERRTAG_BTREE_CHECK_SBLOCK);
140 XFS_ERRORTAG_ATTR_RW(readagf, XFS_ERRTAG_ALLOC_READ_AGF);
141 XFS_ERRORTAG_ATTR_RW(readagi, XFS_ERRTAG_IALLOC_READ_AGI);
142 XFS_ERRORTAG_ATTR_RW(itobp, XFS_ERRTAG_ITOBP_INOTOBP);
143 XFS_ERRORTAG_ATTR_RW(iunlink, XFS_ERRTAG_IUNLINK);
144 XFS_ERRORTAG_ATTR_RW(iunlinkrm, XFS_ERRTAG_IUNLINK_REMOVE);
145 XFS_ERRORTAG_ATTR_RW(dirinovalid, XFS_ERRTAG_DIR_INO_VALIDATE);
146 XFS_ERRORTAG_ATTR_RW(bulkstat, XFS_ERRTAG_BULKSTAT_READ_CHUNK);
147 XFS_ERRORTAG_ATTR_RW(logiodone, XFS_ERRTAG_IODONE_IOERR);
148 XFS_ERRORTAG_ATTR_RW(stratread, XFS_ERRTAG_STRATREAD_IOERR);
149 XFS_ERRORTAG_ATTR_RW(stratcmpl, XFS_ERRTAG_STRATCMPL_IOERR);
150 XFS_ERRORTAG_ATTR_RW(diowrite, XFS_ERRTAG_DIOWRITE_IOERR);
151 XFS_ERRORTAG_ATTR_RW(bmapifmt, XFS_ERRTAG_BMAPIFORMAT);
152 XFS_ERRORTAG_ATTR_RW(free_extent, XFS_ERRTAG_FREE_EXTENT);
153 XFS_ERRORTAG_ATTR_RW(rmap_finish_one, XFS_ERRTAG_RMAP_FINISH_ONE);
154 XFS_ERRORTAG_ATTR_RW(refcount_continue_update, XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE);
155 XFS_ERRORTAG_ATTR_RW(refcount_finish_one, XFS_ERRTAG_REFCOUNT_FINISH_ONE);
156 XFS_ERRORTAG_ATTR_RW(bmap_finish_one, XFS_ERRTAG_BMAP_FINISH_ONE);
157 XFS_ERRORTAG_ATTR_RW(ag_resv_critical, XFS_ERRTAG_AG_RESV_CRITICAL);
158 XFS_ERRORTAG_ATTR_RW(drop_writes, XFS_ERRTAG_DROP_WRITES);
159 XFS_ERRORTAG_ATTR_RW(log_bad_crc, XFS_ERRTAG_LOG_BAD_CRC);
160 XFS_ERRORTAG_ATTR_RW(log_item_pin, XFS_ERRTAG_LOG_ITEM_PIN);
161 XFS_ERRORTAG_ATTR_RW(buf_lru_ref, XFS_ERRTAG_BUF_LRU_REF);
162 XFS_ERRORTAG_ATTR_RW(force_repair, XFS_ERRTAG_FORCE_SCRUB_REPAIR);
163 XFS_ERRORTAG_ATTR_RW(bad_summary, XFS_ERRTAG_FORCE_SUMMARY_RECALC);
164 XFS_ERRORTAG_ATTR_RW(iunlink_fallback, XFS_ERRTAG_IUNLINK_FALLBACK);
166 static struct attribute *xfs_errortag_attrs[] = {
167 XFS_ERRORTAG_ATTR_LIST(noerror),
168 XFS_ERRORTAG_ATTR_LIST(iflush1),
169 XFS_ERRORTAG_ATTR_LIST(iflush2),
170 XFS_ERRORTAG_ATTR_LIST(iflush3),
171 XFS_ERRORTAG_ATTR_LIST(iflush4),
172 XFS_ERRORTAG_ATTR_LIST(iflush5),
173 XFS_ERRORTAG_ATTR_LIST(iflush6),
174 XFS_ERRORTAG_ATTR_LIST(dareadbuf),
175 XFS_ERRORTAG_ATTR_LIST(btree_chk_lblk),
176 XFS_ERRORTAG_ATTR_LIST(btree_chk_sblk),
177 XFS_ERRORTAG_ATTR_LIST(readagf),
178 XFS_ERRORTAG_ATTR_LIST(readagi),
179 XFS_ERRORTAG_ATTR_LIST(itobp),
180 XFS_ERRORTAG_ATTR_LIST(iunlink),
181 XFS_ERRORTAG_ATTR_LIST(iunlinkrm),
182 XFS_ERRORTAG_ATTR_LIST(dirinovalid),
183 XFS_ERRORTAG_ATTR_LIST(bulkstat),
184 XFS_ERRORTAG_ATTR_LIST(logiodone),
185 XFS_ERRORTAG_ATTR_LIST(stratread),
186 XFS_ERRORTAG_ATTR_LIST(stratcmpl),
187 XFS_ERRORTAG_ATTR_LIST(diowrite),
188 XFS_ERRORTAG_ATTR_LIST(bmapifmt),
189 XFS_ERRORTAG_ATTR_LIST(free_extent),
190 XFS_ERRORTAG_ATTR_LIST(rmap_finish_one),
191 XFS_ERRORTAG_ATTR_LIST(refcount_continue_update),
192 XFS_ERRORTAG_ATTR_LIST(refcount_finish_one),
193 XFS_ERRORTAG_ATTR_LIST(bmap_finish_one),
194 XFS_ERRORTAG_ATTR_LIST(ag_resv_critical),
195 XFS_ERRORTAG_ATTR_LIST(drop_writes),
196 XFS_ERRORTAG_ATTR_LIST(log_bad_crc),
197 XFS_ERRORTAG_ATTR_LIST(log_item_pin),
198 XFS_ERRORTAG_ATTR_LIST(buf_lru_ref),
199 XFS_ERRORTAG_ATTR_LIST(force_repair),
200 XFS_ERRORTAG_ATTR_LIST(bad_summary),
201 XFS_ERRORTAG_ATTR_LIST(iunlink_fallback),
205 static struct kobj_type xfs_errortag_ktype = {
206 .release = xfs_sysfs_release,
207 .sysfs_ops = &xfs_errortag_sysfs_ops,
208 .default_attrs = xfs_errortag_attrs,
213 struct xfs_mount *mp)
215 mp->m_errortag = kmem_zalloc(sizeof(unsigned int) * XFS_ERRTAG_MAX,
220 return xfs_sysfs_init(&mp->m_errortag_kobj, &xfs_errortag_ktype,
221 &mp->m_kobj, "errortag");
226 struct xfs_mount *mp)
228 xfs_sysfs_del(&mp->m_errortag_kobj);
229 kmem_free(mp->m_errortag);
234 struct xfs_mount *mp,
235 const char *expression,
238 unsigned int error_tag)
240 unsigned int randfactor;
243 * To be able to use error injection anywhere, we need to ensure error
244 * injection mechanism is already initialized.
246 * Code paths like I/O completion can be called before the
247 * initialization is complete, but be able to inject errors in such
248 * places is still useful.
253 ASSERT(error_tag < XFS_ERRTAG_MAX);
254 randfactor = mp->m_errortag[error_tag];
255 if (!randfactor || prandom_u32() % randfactor)
258 xfs_warn_ratelimited(mp,
259 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
260 expression, file, line, mp->m_fsname);
266 struct xfs_mount *mp,
267 unsigned int error_tag)
269 if (error_tag >= XFS_ERRTAG_MAX)
272 return mp->m_errortag[error_tag];
277 struct xfs_mount *mp,
278 unsigned int error_tag,
279 unsigned int tag_value)
281 if (error_tag >= XFS_ERRTAG_MAX)
284 mp->m_errortag[error_tag] = tag_value;
290 struct xfs_mount *mp,
291 unsigned int error_tag)
293 if (error_tag >= XFS_ERRTAG_MAX)
296 return xfs_errortag_set(mp, error_tag,
297 xfs_errortag_random_default[error_tag]);
301 xfs_errortag_clearall(
302 struct xfs_mount *mp)
304 memset(mp->m_errortag, 0, sizeof(unsigned int) * XFS_ERRTAG_MAX);
313 struct xfs_mount *mp,
314 const char *filename,
316 xfs_failaddr_t failaddr)
318 if (level <= xfs_error_level) {
319 xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
320 "Internal error %s at line %d of file %s. Caller %pS",
321 tag, linenum, filename, failaddr);
328 xfs_corruption_error(
331 struct xfs_mount *mp,
334 const char *filename,
336 xfs_failaddr_t failaddr)
338 if (level <= xfs_error_level)
339 xfs_hex_dump(buf, bufsize);
340 xfs_error_report(tag, level, mp, filename, linenum, failaddr);
341 xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
345 * Warnings specifically for verifier errors. Differentiate CRC vs. invalid
346 * values, and omit the stack trace unless the error level is tuned high.
349 xfs_buf_verifier_error(
355 xfs_failaddr_t failaddr)
357 struct xfs_mount *mp = bp->b_mount;
361 fa = failaddr ? failaddr : __return_address;
362 __xfs_buf_ioerror(bp, error, fa);
364 xfs_alert_tag(mp, XFS_PTAG_VERIFIER_ERROR,
365 "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);
369 xfs_alert(mp, "Unmount and run xfs_repair");
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:",
375 xfs_hex_dump(buf, sz);
378 if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
383 * Warnings specifically for verifier errors. Differentiate CRC vs. invalid
384 * values, and omit the stack trace unless the error level is tuned high.
390 xfs_failaddr_t failaddr)
392 return xfs_buf_verifier_error(bp, error, "", xfs_buf_offset(bp, 0),
393 XFS_CORRUPTION_DUMP_LEN, failaddr);
397 * Warnings for inode corruption problems. Don't bother with the stack
398 * trace unless the error level is turned up high.
401 xfs_inode_verifier_error(
402 struct xfs_inode *ip,
407 xfs_failaddr_t failaddr)
409 struct xfs_mount *mp = ip->i_mount;
413 fa = failaddr ? failaddr : __return_address;
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);
419 xfs_alert(mp, "Unmount and run xfs_repair");
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:",
425 xfs_hex_dump(buf, sz);
428 if (xfs_error_level >= XFS_ERRLEVEL_HIGH)