2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
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.
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.
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
19 #include "xfs_format.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"
31 static unsigned int xfs_errortag_random_default[] = {
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,
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 XFS_RANDOM_FORCE_SCRUB_REPAIR,
67 struct xfs_errortag_attr {
68 struct attribute attr;
72 static inline struct xfs_errortag_attr *
73 to_attr(struct attribute *attr)
75 return container_of(attr, struct xfs_errortag_attr, attr);
78 static inline struct xfs_mount *
79 to_mp(struct kobject *kobject)
81 struct xfs_kobj *kobj = to_kobj(kobject);
83 return container_of(kobj, struct xfs_mount, m_errortag_kobj);
87 xfs_errortag_attr_store(
88 struct kobject *kobject,
89 struct attribute *attr,
93 struct xfs_mount *mp = to_mp(kobject);
94 struct xfs_errortag_attr *xfs_attr = to_attr(attr);
98 if (strcmp(buf, "default") == 0) {
99 val = xfs_errortag_random_default[xfs_attr->tag];
101 ret = kstrtouint(buf, 0, &val);
106 ret = xfs_errortag_set(mp, xfs_attr->tag, val);
113 xfs_errortag_attr_show(
114 struct kobject *kobject,
115 struct attribute *attr,
118 struct xfs_mount *mp = to_mp(kobject);
119 struct xfs_errortag_attr *xfs_attr = to_attr(attr);
121 return snprintf(buf, PAGE_SIZE, "%u\n",
122 xfs_errortag_get(mp, xfs_attr->tag));
125 static const struct sysfs_ops xfs_errortag_sysfs_ops = {
126 .show = xfs_errortag_attr_show,
127 .store = xfs_errortag_attr_store,
130 #define XFS_ERRORTAG_ATTR_RW(_name, _tag) \
131 static struct xfs_errortag_attr xfs_errortag_attr_##_name = { \
132 .attr = {.name = __stringify(_name), \
133 .mode = VERIFY_OCTAL_PERMISSIONS(S_IWUSR | S_IRUGO) }, \
137 #define XFS_ERRORTAG_ATTR_LIST(_name) &xfs_errortag_attr_##_name.attr
139 XFS_ERRORTAG_ATTR_RW(noerror, XFS_ERRTAG_NOERROR);
140 XFS_ERRORTAG_ATTR_RW(iflush1, XFS_ERRTAG_IFLUSH_1);
141 XFS_ERRORTAG_ATTR_RW(iflush2, XFS_ERRTAG_IFLUSH_2);
142 XFS_ERRORTAG_ATTR_RW(iflush3, XFS_ERRTAG_IFLUSH_3);
143 XFS_ERRORTAG_ATTR_RW(iflush4, XFS_ERRTAG_IFLUSH_4);
144 XFS_ERRORTAG_ATTR_RW(iflush5, XFS_ERRTAG_IFLUSH_5);
145 XFS_ERRORTAG_ATTR_RW(iflush6, XFS_ERRTAG_IFLUSH_6);
146 XFS_ERRORTAG_ATTR_RW(dareadbuf, XFS_ERRTAG_DA_READ_BUF);
147 XFS_ERRORTAG_ATTR_RW(btree_chk_lblk, XFS_ERRTAG_BTREE_CHECK_LBLOCK);
148 XFS_ERRORTAG_ATTR_RW(btree_chk_sblk, XFS_ERRTAG_BTREE_CHECK_SBLOCK);
149 XFS_ERRORTAG_ATTR_RW(readagf, XFS_ERRTAG_ALLOC_READ_AGF);
150 XFS_ERRORTAG_ATTR_RW(readagi, XFS_ERRTAG_IALLOC_READ_AGI);
151 XFS_ERRORTAG_ATTR_RW(itobp, XFS_ERRTAG_ITOBP_INOTOBP);
152 XFS_ERRORTAG_ATTR_RW(iunlink, XFS_ERRTAG_IUNLINK);
153 XFS_ERRORTAG_ATTR_RW(iunlinkrm, XFS_ERRTAG_IUNLINK_REMOVE);
154 XFS_ERRORTAG_ATTR_RW(dirinovalid, XFS_ERRTAG_DIR_INO_VALIDATE);
155 XFS_ERRORTAG_ATTR_RW(bulkstat, XFS_ERRTAG_BULKSTAT_READ_CHUNK);
156 XFS_ERRORTAG_ATTR_RW(logiodone, XFS_ERRTAG_IODONE_IOERR);
157 XFS_ERRORTAG_ATTR_RW(stratread, XFS_ERRTAG_STRATREAD_IOERR);
158 XFS_ERRORTAG_ATTR_RW(stratcmpl, XFS_ERRTAG_STRATCMPL_IOERR);
159 XFS_ERRORTAG_ATTR_RW(diowrite, XFS_ERRTAG_DIOWRITE_IOERR);
160 XFS_ERRORTAG_ATTR_RW(bmapifmt, XFS_ERRTAG_BMAPIFORMAT);
161 XFS_ERRORTAG_ATTR_RW(free_extent, XFS_ERRTAG_FREE_EXTENT);
162 XFS_ERRORTAG_ATTR_RW(rmap_finish_one, XFS_ERRTAG_RMAP_FINISH_ONE);
163 XFS_ERRORTAG_ATTR_RW(refcount_continue_update, XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE);
164 XFS_ERRORTAG_ATTR_RW(refcount_finish_one, XFS_ERRTAG_REFCOUNT_FINISH_ONE);
165 XFS_ERRORTAG_ATTR_RW(bmap_finish_one, XFS_ERRTAG_BMAP_FINISH_ONE);
166 XFS_ERRORTAG_ATTR_RW(ag_resv_critical, XFS_ERRTAG_AG_RESV_CRITICAL);
167 XFS_ERRORTAG_ATTR_RW(drop_writes, XFS_ERRTAG_DROP_WRITES);
168 XFS_ERRORTAG_ATTR_RW(log_bad_crc, XFS_ERRTAG_LOG_BAD_CRC);
169 XFS_ERRORTAG_ATTR_RW(log_item_pin, XFS_ERRTAG_LOG_ITEM_PIN);
170 XFS_ERRORTAG_ATTR_RW(buf_lru_ref, XFS_ERRTAG_BUF_LRU_REF);
171 XFS_ERRORTAG_ATTR_RW(force_repair, XFS_ERRTAG_FORCE_SCRUB_REPAIR);
173 static struct attribute *xfs_errortag_attrs[] = {
174 XFS_ERRORTAG_ATTR_LIST(noerror),
175 XFS_ERRORTAG_ATTR_LIST(iflush1),
176 XFS_ERRORTAG_ATTR_LIST(iflush2),
177 XFS_ERRORTAG_ATTR_LIST(iflush3),
178 XFS_ERRORTAG_ATTR_LIST(iflush4),
179 XFS_ERRORTAG_ATTR_LIST(iflush5),
180 XFS_ERRORTAG_ATTR_LIST(iflush6),
181 XFS_ERRORTAG_ATTR_LIST(dareadbuf),
182 XFS_ERRORTAG_ATTR_LIST(btree_chk_lblk),
183 XFS_ERRORTAG_ATTR_LIST(btree_chk_sblk),
184 XFS_ERRORTAG_ATTR_LIST(readagf),
185 XFS_ERRORTAG_ATTR_LIST(readagi),
186 XFS_ERRORTAG_ATTR_LIST(itobp),
187 XFS_ERRORTAG_ATTR_LIST(iunlink),
188 XFS_ERRORTAG_ATTR_LIST(iunlinkrm),
189 XFS_ERRORTAG_ATTR_LIST(dirinovalid),
190 XFS_ERRORTAG_ATTR_LIST(bulkstat),
191 XFS_ERRORTAG_ATTR_LIST(logiodone),
192 XFS_ERRORTAG_ATTR_LIST(stratread),
193 XFS_ERRORTAG_ATTR_LIST(stratcmpl),
194 XFS_ERRORTAG_ATTR_LIST(diowrite),
195 XFS_ERRORTAG_ATTR_LIST(bmapifmt),
196 XFS_ERRORTAG_ATTR_LIST(free_extent),
197 XFS_ERRORTAG_ATTR_LIST(rmap_finish_one),
198 XFS_ERRORTAG_ATTR_LIST(refcount_continue_update),
199 XFS_ERRORTAG_ATTR_LIST(refcount_finish_one),
200 XFS_ERRORTAG_ATTR_LIST(bmap_finish_one),
201 XFS_ERRORTAG_ATTR_LIST(ag_resv_critical),
202 XFS_ERRORTAG_ATTR_LIST(drop_writes),
203 XFS_ERRORTAG_ATTR_LIST(log_bad_crc),
204 XFS_ERRORTAG_ATTR_LIST(log_item_pin),
205 XFS_ERRORTAG_ATTR_LIST(buf_lru_ref),
206 XFS_ERRORTAG_ATTR_LIST(force_repair),
210 static struct kobj_type xfs_errortag_ktype = {
211 .release = xfs_sysfs_release,
212 .sysfs_ops = &xfs_errortag_sysfs_ops,
213 .default_attrs = xfs_errortag_attrs,
218 struct xfs_mount *mp)
220 mp->m_errortag = kmem_zalloc(sizeof(unsigned int) * XFS_ERRTAG_MAX,
221 KM_SLEEP | KM_MAYFAIL);
225 return xfs_sysfs_init(&mp->m_errortag_kobj, &xfs_errortag_ktype,
226 &mp->m_kobj, "errortag");
231 struct xfs_mount *mp)
233 xfs_sysfs_del(&mp->m_errortag_kobj);
234 kmem_free(mp->m_errortag);
239 struct xfs_mount *mp,
240 const char *expression,
243 unsigned int error_tag)
245 unsigned int randfactor;
248 * To be able to use error injection anywhere, we need to ensure error
249 * injection mechanism is already initialized.
251 * Code paths like I/O completion can be called before the
252 * initialization is complete, but be able to inject errors in such
253 * places is still useful.
258 ASSERT(error_tag < XFS_ERRTAG_MAX);
259 randfactor = mp->m_errortag[error_tag];
260 if (!randfactor || prandom_u32() % randfactor)
263 xfs_warn_ratelimited(mp,
264 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
265 expression, file, line, mp->m_fsname);
271 struct xfs_mount *mp,
272 unsigned int error_tag)
274 if (error_tag >= XFS_ERRTAG_MAX)
277 return mp->m_errortag[error_tag];
282 struct xfs_mount *mp,
283 unsigned int error_tag,
284 unsigned int tag_value)
286 if (error_tag >= XFS_ERRTAG_MAX)
289 mp->m_errortag[error_tag] = tag_value;
295 struct xfs_mount *mp,
296 unsigned int error_tag)
298 if (error_tag >= XFS_ERRTAG_MAX)
301 return xfs_errortag_set(mp, error_tag,
302 xfs_errortag_random_default[error_tag]);
306 xfs_errortag_clearall(
307 struct xfs_mount *mp)
309 memset(mp->m_errortag, 0, sizeof(unsigned int) * XFS_ERRTAG_MAX);
318 struct xfs_mount *mp,
319 const char *filename,
321 xfs_failaddr_t failaddr)
323 if (level <= xfs_error_level) {
324 xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
325 "Internal error %s at line %d of file %s. Caller %pS",
326 tag, linenum, filename, failaddr);
333 xfs_corruption_error(
336 struct xfs_mount *mp,
338 const char *filename,
340 xfs_failaddr_t failaddr)
342 if (level <= xfs_error_level)
343 xfs_hex_dump(p, XFS_CORRUPTION_DUMP_LEN);
344 xfs_error_report(tag, level, mp, filename, linenum, failaddr);
345 xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
349 * Warnings specifically for verifier errors. Differentiate CRC vs. invalid
350 * values, and omit the stack trace unless the error level is tuned high.
353 xfs_buf_verifier_error(
359 xfs_failaddr_t failaddr)
361 struct xfs_mount *mp = bp->b_target->bt_mount;
365 fa = failaddr ? failaddr : __return_address;
366 __xfs_buf_ioerror(bp, error, fa);
368 xfs_alert(mp, "Metadata %s detected at %pS, %s block 0x%llx %s",
369 bp->b_error == -EFSBADCRC ? "CRC error" : "corruption",
370 fa, bp->b_ops->name, bp->b_bn, name);
372 xfs_alert(mp, "Unmount and run xfs_repair");
374 if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
375 sz = min_t(size_t, XFS_CORRUPTION_DUMP_LEN, bufsz);
376 xfs_alert(mp, "First %d bytes of corrupted metadata buffer:",
378 xfs_hex_dump(buf, sz);
381 if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
386 * Warnings specifically for verifier errors. Differentiate CRC vs. invalid
387 * values, and omit the stack trace unless the error level is tuned high.
393 xfs_failaddr_t failaddr)
395 return xfs_buf_verifier_error(bp, error, "", xfs_buf_offset(bp, 0),
396 XFS_CORRUPTION_DUMP_LEN, failaddr);
400 * Warnings for inode corruption problems. Don't bother with the stack
401 * trace unless the error level is turned up high.
404 xfs_inode_verifier_error(
405 struct xfs_inode *ip,
410 xfs_failaddr_t failaddr)
412 struct xfs_mount *mp = ip->i_mount;
416 fa = failaddr ? failaddr : __return_address;
418 xfs_alert(mp, "Metadata %s detected at %pS, inode 0x%llx %s",
419 error == -EFSBADCRC ? "CRC error" : "corruption",
420 fa, ip->i_ino, name);
422 xfs_alert(mp, "Unmount and run xfs_repair");
424 if (buf && xfs_error_level >= XFS_ERRLEVEL_LOW) {
425 sz = min_t(size_t, XFS_CORRUPTION_DUMP_LEN, bufsz);
426 xfs_alert(mp, "First %d bytes of corrupted metadata buffer:",
428 xfs_hex_dump(buf, sz);
431 if (xfs_error_level >= XFS_ERRLEVEL_HIGH)